To find the contribution of each man (this is a sexist problem as women could work as well, but that’s besides the point) take 5/2 and then multiply that value by 20 and you’ll find it takes 50 hours for two men to do it.
Answer: 50 hours
Answer:
50 hours.
Step-by-step explanation:
To solve these type of question we should always remember that man power is inversely proportionate to the work done.
That means if we double the manpower work done will be half. and when we reduce the manpower to the half time take to complete the work will be double.
It takes 5 men to brick a house = 20 hours
so 1 man will brick the house = 20 × 5
= 100 hours
Therefore, 2 men will brick the house = [tex]\frac{100}{2}[/tex]
= 50 hours.
Sorry I’m very bad in math I need help please
Answer:
d
Step-by-step explanation:
an x without anything in front of it is 1x you can only mix like terms so 8x+1x+1x=10x - 2y
8 ⋅ 3^2 + 3
2^2 ⋅ 8 ÷ 2 + 2
Answer:
23
Step-by-step explanation:
For this case we have that the order of algebraic operations must be carried out in the following way, according to the PEMDAS method:
P
Parenthesis first
E
Exponents (powers and square roots, etc.)
MD
Multiplication and Division (from left to right)
AS
Addition and Subtraction (from left to right)
We have two expressions:
[tex]8 * 3 ^ 2 + 3 =\\8 * 9 + 3 =\\72 + 3 =\\75[/tex]
The second expression is:
2^2 * 8÷2 + 2 =
4 * 8÷2 + 2 =
32÷2 + 2 =
16 + 2 =
18
ANswer:
75 and 18
whats the volume of the box
You can deduct that the height of the first box is 5cm. Since the next box is 3x the size, that means it’s height is 15. So 30*30*15= 13500.
Your answer is 13500 cm^3
Have a blessed day,
Jrodt
Answer:
13500 cm³
Step-by-step explanation:
The linear ratio = 10 : 30 = 1 : 3
The volume ratio = 1³ : 3³ = 1 : 27
Thus the volume of the larger box is 27 times larger than the volume of the smaller box
volume = 500 × 27 = 13500 cm³
The graphs below have the same shape. What is the equation of the blue graph
Answer:
C. [tex]g(x)=(x-2)^2[/tex]
Step-by-step explanation:
Remember the rules for function transformations:
- [tex]f(x+a)[/tex] shifts the function, [tex]f(x)[/tex], [tex]a[/tex] units to the left
- [tex]f(x-a)[/tex] shifts the function, [tex]f(x)[/tex], [tex]a[/tex] units to the right
We can infer from the picture that the blue graph is shifted 2 units to the right of the red graph, so we should apply the second rule:
[tex]f(x)=x^2[/tex]
[tex]g(x-2)=(x-2)^2[/tex]
[tex]g(x)=(x-2)^2[/tex]
We can conclude that the correct answer is C. [tex]g(x)=(x-2)^2[/tex]
Find the area of the trapezoid.
What is the perimeter of kite OBDE?
12 units
22 units
38 units
58 units
Answer:
38 units
Step-by-step explanation:
Triangle ABC is a right triangle. To find the missing side, AB (which is the hypotenuse), we use the Pythagorean theorem:
a²+b² = c²
10²+24² = c²
100+576 = c²
676 = c²
Take the square root of both sides:
√(676) = √(c²)
26 = c
AB is a diameter; this means the radius is 26/2 = 13. This means that OB = 13 and OE = 13.
BD and DE are congruent; this means that BD = 6.
This makes the perimeter
13+13+6+6 = 38 units.
The perimeter of kite OBDE is 38 units.
What is Pythagoras theorem?Pythagoras theorem states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides.
What is perimeter?Perimeter is the distance around the edge of a shape.
What is kite?A kite is a quadrilateral that has 2 pairs of equal-length sides and these sides are adjacent to each other.
According to the given question.
We have a circle with center o and diameter AB.
Triangle ABC is a right triangle.
To find the missing side, AB (which is the hypotenuse), we use the Pythagoras theorem.
So,
[tex](AB)^{2} = (10)^{2} +(24)^{2}[/tex]
[tex]\implies (AB)^{2} = 100+ 576\\\implies (AB)^{2} = 676\\\implies AB = \sqrt{676} \\\implies AB = 26[/tex]
Since, AB is the diameter of the circle. Therefore,
[tex]OB = \frac{AB}{2} \\\implies OB = \frac{26}{2} = 13[/tex]
Also, OBDE is a kite and we know that the adjacent sides of a kite are congruent.
[tex]\implies OB = BD = 13 \\\And,\ OE = ED = 6[/tex]
Therefore,
the perimeter of kite OBDE
= Length of sides (OB + BD + DE + EO )
= 13 + 13 + 6 + 6
= 26 + 12
= 38 units.
Hence, the perimeter of kite OBDE is 38 units.
Find out more information about perimeter, kite and Pythagoras theorem here:
https://brainly.com/question/12525202
#SPJ2
The run is the what
change between two points on a line
Answer:
The Rate of Change between two points on a line
Answer:
horizontal
Step-by-step explanation:
Which is equivalent to 243?
None of the provided numbers are directly equivalent to 243. Depending on the context like exponents or probability distribution, 243 could arise from such mathematical constructs.
Explanation:From the numbers provided, it seems like none of them are directly equivalent to 243. However, if you are referring to a possible mathematical equation, there could be several combinations of numbers that can equate to 243. For instance, one could add several numbers to total 243. In context of
exponents
or
powers
, 3 raised to the power of 5 (3^5) equals 243. In the world of
binomial probability distribution
, 243 could be a possible result based on specific conditions. Without more context, it's hard to provide a specific equivalence to 243.
Learn more about Equivalence here:https://brainly.com/question/10046686
#SPJ2
The diameter of the smallest bacteria is .0000002 meters. Rewrite this number in scientific notation.
Blank × 10 blank meters
Answer:
2.0*10^(-7) meters
Step-by-step explanation:
We'll need to move the decimal point 7 places to the right, obtaining 2.0, and then multiply this 2.0 by 10^(-7).
This diameter is 2.0*10^(-7) meters.
Answer:
2x2^10m
Step-by-step explanation:
0.0000002
the morgan famili and the alexander family each ised their sprinkles last summer. the water output was 20. l per hour. The water output rate for the Alexander family ‘s sprinkler was 40 L per hour. The families used their sprinklers for a combined total of 50 hours, resulting in total water output of 1400 L. How long was each sprinkler used?
Answer:
number of hours Alexander family ‘s sprinkler work = 20
number of hours Morgan family ‘s sprinkler work = 30
Step-by-step explanation:
Given in the question,
water output rate for the Alexander family ‘s sprinkler = 40 L
water output rate for the Morgan family ‘s sprinkler = 20 L
Suppose, number of hours Alexander family ‘s sprinkler work = x
Suppose, number of hours Morgan family ‘s sprinkler work = y
Equation1
x + y = 50
Equation 2
40x + 20y = 1400
x = 50 - y
Put this value of x in equation 2
40(50-y) + 20y = 1400
2000 - 40y + 20y = 1400
-20y = 1400 - 2000
-20y = -600
y = 30
Put this value of y in equation 1 to get the value of x
x + 30 = 50
x = 50 - 30
x = 20
What is the charge of an atom with 2 more electrons than protons
An atom containing two more electrons than protons has a net charge of negative two (-2), as determined by the difference in number of positive protons and negative electrons.
Explanation:An atom which has two more electrons than protons has a charge of -2. The charge of an atom is determined by the difference between the number of protons and electrons. Protons have a charge of +1 and electrons have a charge of -1. Hence, if the atom has two more electrons than protons, it will have a charge of -2 because electrons contribute a negative charge. For instance, for an atom with 2 protons (+2 charge) and 4 electrons (-4 charge), the overall charge would be -2.
Learn more about Atom Charge here:https://brainly.com/question/9264485
#SPJ12
An atom with 2 more electrons than protons will have a net charge of -2.
Explanation:An atom is the basic unit of matter, consisting of a nucleus containing protons and neutrons, surrounded by electrons. Elements are defined by the number of protons in their atoms. An atom's charge is determined by the difference between the number of electrons and the number of protons. If an atom has 2 more electrons than protons, it will have a net charge of -2.
For example, let's consider the element oxygen (O). Oxygen normally has 8 protons and 8 electrons, resulting in a neutral charge. If we add 2 more electrons to oxygen, it will then have 10 electrons and still 8 protons, giving it a net charge of -2.
Learn more about Atom charge here:https://brainly.com/question/9264485
#SPJ12
Please help with this i will give you 25 points please(click the picture)
A:$339
B:$329
C:$319
D:$309
Answer:
B. $329
Step-by-step explanation:
Add up the total amount of burgers sold (which is 47) and multiply by $5 to get 235$.
Then add up the amount of hot dogs (which is also 47) and multiply by $2 to get $94.
Then add $235 and $94 to get $329.
How do I solve this problem?
Answer:
[tex]EF=7.6\ units[/tex]
[tex]EG=15.9\ units[/tex]
[tex]m<G=28.6\°[/tex]
Step-by-step explanation:
step 1
Find the measure of side EF
we know that
In the right triangle EFG
[tex]tan(61.4\°)=\frac{FG}{EF}[/tex]
[tex]EF=\frac{FG}{tan(61.4\°)}[/tex]
[tex]EF=\frac{14}{tan(61.4\°)}[/tex]
[tex]EF=7.6\ units[/tex]
step 2
Find the measure of side EG
we know that
In the right triangle EFG
[tex]sin(61.4\°)=\frac{FG}{EG}[/tex]
[tex]EG=\frac{FG}{sin(61.4\°)}[/tex]
[tex]EG=\frac{14}{sin(61.4\°)}[/tex]
[tex]EG=15.9\ units[/tex]
step 3
Find the measure of angle G
wee know that
[tex]m>E+m<G=90\°[/tex] -----> by complementary angles
we have
[tex]m<E=61.4\°[/tex]
substitute
[tex]61.4\°+m<G=90\°[/tex]
[tex]m<G=90\°-61.4\°=28.6\°[/tex]
What are the solution(s) to the quadratic equation 40 − x2 = 0? x = ±2 x = ±4 x = ±2 x = ±4
Answer: [tex]x=\±2\sqrt{10}[/tex]
Step-by-step explanation:
To find the solutions of the quadratic equation given in the problem, you can apply the proccedure shown below:
- Subtract 40 from both sides of the equation.
- Multiply both sides of the equation by -1
- Apply square root to both sides of the equation.
Therefore, by applyin the steps above, you obtain:
[tex]40-x^2-40=0-40\\-x^2=-40\\(-1)(-x^2)=(-40)(-1)\\\\x^2=40\\\\\sqrt{x^2}=\±\sqrt{40}\\\\x=\±2\sqrt{10}[/tex]
Answer:
= ±2√10
Step-by-step explanation:
40 − x2 = 0
We could solve this by;
subtracting x² from both sides
we get;
40 = x²
Then we get the square root on both sides;
√x² = √40 ; but the square root of a positive number "a" is +√a or -√a
Therefore;
√x² = ± √40
x = ±√40
√40 = √4√10
= 2√10
Thus;
x = ±2√10
which graph represents the function f(x) =2|x|?
Answer:
the third graph
The correct graph is Graph 3.
Step-by-step explanation:We are given a modulus function f(x) by:
[tex]f(x)=2|x|[/tex]
We will go through the following graphs by checking the value of the graph at some value of x and see whether the value on the graph at that x matches the value of f(x) at that particular x.
when x=1 we have:
[tex]f(x)=2\times |1|\\\\f(x)=2[/tex]
Graph 1:
When x=1
we have:
[tex]f(x)=0.5\neq 2[/tex]
Hence, Graph 1 does not represent the given function.
Graph 2:
when x=1 we have:
[tex]f(x)=1\neq 2[/tex]
Hence, Graph 2 is not the answer.
Graph 4:
when x=1 we have:
[tex]f(x)<2[/tex]
Hence, graph 4 is not the correct graph to represent f(x).
Hence, we are left with Graph 3.
When we plot the function f(x) we see that it matches the graph 3.
write the following decimal number in it’s equivalent fraction form. -3.143
Answer:
-3 143/1000
Step-by-step explanation:
To write -3.143 in its equivalent fraction form, multiply the whole number part by the place value of the decimal and add it to the decimal part multiplied by the place value. The resulting fraction is -3143/1000.
Explanation:To write the decimal number -3.143 in its equivalent fraction form, we first need to determine the place value of each digit. The number -3.143 has three digits after the decimal point, so the fraction's denominator will be ten, raised to the power of three, which is 1000. The fraction's numerator will be the whole number part of the decimal (in this case, -3) multiplied by 1000, plus the decimal part (0.143) multiplied by 1000.
Therefore, the equivalent fraction form of -3.143 is:
-3.143 = (-3 * 1000 + 0.143 * 1000) / 1000 = -3143 / 1000
Learn more about fractions here:https://brainly.com/question/10354322
#SPJ3
how many times does 7 go into 40
Answer:57.1
If that helps you
Step-by-step explanation:
Answer:
7 cant go into 40 evenly, it would be 5.7 times if we were just to do 40 divided by 7 . . . .
so i guess (even though its not a even number ) your answer is 5.7
40/7 = 5.71
Add (4x-3)+(2x-4)
Please help !!!
Answer:
A: 6x - 7
Step-by-step explanation:
You may find it helpful to rearrange these two quantities vertically:
Add:
(4x-3)
+(2x-4)
--------------
6x - 7
This corresponds to the first possible answer listed: A.
The simplified expression is 6x - 7.
Hence the correct option is A.
Given is an expression (4x-3) + (2x-4), we need to perform addition operation to simplify the expression.
You must combine like terms in the provided expression, (4x-3) + (2x-4), to make it simpler.
Similar terms are those that share a variable and an exponent.
Group terms that are similar together.
(4x - 3) + (2x - 4)
Add the like terms' coefficients.
(4x + 2x) + (-3 - 4)
Add the coefficients together.
6x - 7
Therefore, the simplified expression is 6x - 7.
Hence the correct option is A.
Learn more about Expression click;
https://brainly.com/question/34132400
#SPJ6
Find (1.6x10^8)(5.8x10^6)/(4x10^6), expressed in scientific notation.
[tex]1.6 \times {10}^{8} = 160000000[/tex]
[tex]5.8 \times {10}^{6} = 5800000[/tex]
[tex]4 \times {10}^{6} = 400000[/tex]
Cal's go cart has a gas tank with the dimensions shown below.
He uses a gas can that holds 111 gallon of gas, to fill the go cart tank.
111 gallon = 231231231 inches^3
3
t
Answer: 2 cans.
Step-by-step explanation:
Calculate the volume of the go cart tank, which has the form of a rectangular prism. You can use the following formula:
[tex]V=l*w*h[/tex]
Where:
l: is the lenght.
w: is the width.
h: is the height.
In this case:
[tex]l=15.4in\\w=10in\\h=3in[/tex]
Substitute values into the formula. Then:
[tex]V=(15.4in)(10in)(3in)=462in^3[/tex]
If a gas can holds 1 gallon of gas and [tex]1\ gallon=231\ in^3[/tex], then the number of full gas cans that will take to fill the go cart's tank (whose volume is 462 in³) is:
[tex]gas\ cans=\frac{(462in^3)(1can)}{(231in^3)}=2\ cans[/tex]
Answer:
8 full cans
Step-by-step explanation:
It will take 8 full cans of gas to fill the go cart's gas tank.
Meagan bought 6 kilograms of dried blue berries of $27.which of the following is an equivalent rate?
Step-by-step explanation:
Don't see an answer but
You can divide the dollar amount by the kilograms and it should be 4.5, anything that isn't is incorrect.
for example 27/6 is 4.5
28/4 is 7 and therefore not equivalent.
Simplify.
Rewrite the expression in the form k • x^n
(4x)^2
[tex] {(4x)}^{2} = 16 \times {x}^{2} [/tex]
There ya go.
The expression can be rewritten as 16x^2.
How to rewrite an expression?An expression can be rewritten by opening brackets, completing squares, reducing terms from it, etc.
We can rewrite the given expression as follows:The given expression is (4x)^2.
We can open the bracket of the given expression.
(4x)^2 = 16x^2
We have rewritten the expression. This expression is in the form of k • x^n.
Therefore, we have rewritten the given expression (4x)^2 as 16x^2.
Learn more about rewriting expressions here: https://brainly.com/question/237419
#SPJ2
Tracy needs to find the length and width of the equipment storage room where she works. The room is 2 meters longer than it is wide. Its perimeter is 16 meters.
What is the width in meters?
Answer:
3 meters
Step-by-step explanation:
We assume the storage room is a rectangle, like most rooms, no indication it is otherwise.
We know it's a rectangle and not a square because it is longer than wide.
We have the perimeter measurement (16 meters).
So, we can make the following equation:
2x + 2y = 16
x being the width of the room, y being it's length. A perimeter is the sum of all sides.
We also know the room is 2 meters longer than wide... so:
y = x + 2
If we replace y in the first equation by its value relative to x, we get:
2x + 2(x + 2) = 16 which becomes
2x + 2x + 4 = 16
4x =12
thus x = 3
Width: 3 meters
Length: 5 meters.
Confirms the 16 meters perimeter.
Answer:
Width = 3 meters
Step-by-step explanation:
We are given that for an equipment storage room, it is 2 meters longer than its width and the perimeter of this room is 16 meters.
Given the above information, we are to find the width of the room.
Perimeter = [tex]2l+2w[/tex]
Supposing [tex]x[/tex] to be the width and [tex]x+2[/tex] to the length, we can write it as:
[tex]16=2(x)+2(x+2)[/tex]
[tex]16=2x+2x+4[/tex]
[tex]12=4x[/tex]
[tex]x=\frac{12}{4}[/tex]
x = 3
Therefore, the width = 3 meters.
a movie complex is showing the same movie in three theaters. In theater A, 112 of the 160 seats are filled. In theater B, 84 seats are filled and 56 seats are empty. In theater C, 63 of the 180 seats are empty. Which theater has the greater percent of its seats filled.
Answer: Theater A has the greatest percent of seats filled, at 70%
Step-by-step explanation:
To find out which theater has the greatest percent of its seats filled, we need to calculate the percentage of seats filled in each theater. We can use the following formula to calculate percentage:
Percentage = (Part / Whole) x 100
For theater A, we have 112 seats filled out of 160 total seats: Percentage for theater A = (112 / 160) x 100 = 70%
For theater B, we have 84 seats filled out of 140 total seats: Percentage for theater B = (84 / 140) x 100 = 60%
For theater C, we have 117 seats filled out of 180 total seats: Percentage for theater C = (63 / 180) x 100 = 35% (Note that we need to subtract 63 empty seats from the total seats to get the total filled seats in theater C)
Therefore, theater A has the greatest percent of its seats filled, at 70%.
Twenty-seven minus of a number (x) is not more than 36. What is the number? A. x > 42 B. x ≥ -6 C. x < 3 D. x ≤ -6
Answer:
x ≥ - 9Step-by-step explanation:
Twenty-seven minus of a number (x) is not more than 36
27 - x ≤ 36 subtract 27 from both sides
27 - 27 - x ≤ 36 - 27
-x ≤ 9 change the signs
x ≥ - 9
Answer:
x ≥ -6
Step-by-step explanation:
got it right
Find the missing term.
If y = 1 + i, then y^3 − 3y^2 + (?) − 1 = -i
What would the "?" equal to.
A) -3y
B) -3y + 1
C) 3y
D) 3i
Answer:
C
Step-by-step explanation:
Simplify everything to get :
-3 - 4i + (?) = -i
From this we know that we need 3i + 3 to get -i.
3y = 3(1 + i)
3y = 3 + 3i
So the answer is C.
The Answer Would be:
C. 3y
What angle measure is complimentary to a 37 degree angle
Answer:
53 degree angle
Step-by-step explanation:
Two angles are said to be complementary if they add up to 90 degrees. Let the complementary angle of 37 degrees is x. These two angles must add up to 90 degrees. So we can set up the equation as:
37 + x = 90
Subtracting 37 from both sides, we get:
x = 90 - 37
x = 53 degree angle
From the above solution we can see that if we want to find the complementary angle of any angle, we can subtract the given measure from 90 degrees to get our answer.
Answer:53
Step-by-step explanation:
90-37=53
Help me what is the answer?!
Answer:
Hence choice A is correct
Step-by-step explanation:
Given equations are [tex]f(x)=\sqrt{x^2-1}[/tex] and [tex]g(x)=\sqrt{x-1}[/tex]
Now we need to find the value of [tex]\left(\frac{f}{g}\right)\left(x\right)[/tex]. Then select correct matching choice from the given choices.
Now let's find [tex](fof)(3)[/tex]
[tex]\left(\frac{f}{g}\right)\left(x\right)[/tex]
[tex]\left(\frac{f}{g}\right)\left(x\right)=\frac{f\left(x\right)}{g\left(x\right)}[/tex]
[tex]\left(\frac{f}{g}\right)\left(x\right)=\frac{\sqrt{x^2-1}}{\sqrt{x-1}}[/tex]
[tex]\left(\frac{f}{g}\right)\left(x\right)=\frac{\sqrt{\left(x+1\right)\left(x-1\right)}}{\sqrt{x-1}}[/tex]
[tex]\left(\frac{f}{g}\right)\left(x\right)=\sqrt{x+1}[/tex]
Hence choice A is correct
Answer:
a. (f/g)(x) = √x+1
Step-by-step explanation:
We have given two function.
f(x) = √x²-1
g(x) = √x-1
We have to find the quotient of f(x) and g(x).
(f/g)(x) = ?
The formula to find (f/g)(x) is :
(f/g)(x) = f(x) / g(x)
simplifying f(x) , we have
f(x) = √(x-1)(x+1)
f(x) = (√x-1)(√x+1)
Putting values in above formula, we have
(f/g)(x) = (√x-1)(√x+1) / √x-1
(f/g)(x) = √x+1 which is the answer.
Please Help me really quick!
Which statement about the slope of the line is true?
It is 3 throughout the line.
It is 1/3 throughout the line.
The slope from point O to point A is 1/3 time the slope of the line from point A to point B.
The slope from point O to point A is three times the slope of the line from point A to point B.
Answer:
It is 1/3 throughout the line.
Step-by-step explanation:
It is 1/3 throughout the line.
The amount Lin's sister earns at her part-time job is proportional to the number of hours she works. She earns $9.60 per hour. Is y a function of X. Write an equation describing x as a function of y
Using proportional relationships, it is found that:
y is a function of x, given by [tex]y = 9.6x[/tex].x as a function of y is given by [tex]x = \frac{9.6}{x}[/tex]What is a proportional relationship?A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:
[tex]y = kx[/tex]
k is the constant of proportionality.
In this problem, considering:
x as the number of hours she works. y as her earnings.Lin's sister earns $9.60 per hour.Hence, y is a function of x, given by:
[tex]y = 9.6x[/tex]
Also, we can write x as a function of y, as follows:
[tex]x = \frac{y}{9.6}[/tex]
You can learn more about proportional relationships at https://brainly.com/question/25067191
Yes, y is a function of x as earnings are proportional to hours worked. The equation describing x as a function of y is x = y/9.60, since Lin's sister earns $9.60 per hour.
The problem states that the amount Lin's sister earns at her part-time job is proportional to the number of hours she works, and she earns $9.60 per hour. To answer the question whether y is a function of x, yes, y is indeed a function of x because for each value of x (number of hours worked), there is exactly one value of y (the earnings).
To write the equation describing x as a function of y, we start with the standard form of the equation for a direct proportion: y = kx, where k is the constant of proportionality. In this case, k is $9.60 per hour. So, the equation would normally be written as y = 9.60x. However, the question asks for x as a function of y. Therefore, we need to rearrange the equation to solve for x: x = y/9.60.