Answer:
5 seconds
Step-by-step explanation:
d = 16t^2
You are given the distance, d, and you need to find the time, t. Replace d with the given distance, 400 ft.
d = 400
400 = 16t^2
Switch sides.
16t^2 = 400
Divide both sides by 16.
t^2 = 25
Take the square root of both sides.
t = 5
Answer: 5 seconds
It takes 5 seconds for the penny to hit the ground when it falls from a height of 400 feet.
What is a quadratic equation?A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
The distance d (in feet) a penny falls from the window of a building is represented by ;
[tex]d = 16t^2[/tex]
where t is the time (in seconds) it takes for a penny to hit the ground.
d = 400
[tex]400 = 16t^2\\\\16t^2 = 400\\t^2 = 25\\t = 5[/tex]
Therefore, It takes 5 seconds for the penny to hit the ground when it falls from a height of 400 feet.
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Find the missing length round to the nearest tenth I don’t know how to do this
Answer:
Step-by-step explanation:
Answer:
19.4
Step-by-step explanation:
21^2 = 8^2 + a^2
441 = 64 + 377
the square root of 377 = approximately 19.4
What is the volume of the composite figure shown below?
Answer:
The composite shape has a total area of 2412mm squared.
The volume of composite figure is,
[tex]=1873+540=2413mm^{3}[/tex]
Volume of Cuboid:The volume of composite figure is the sum of volume of upper cuboidal part and volume of lower cuboidal part.
The length , width and height of upper cuboidal part is 13, 12 and 12 mm.
Volume of upper part is,
[tex]=13*12*12=1873mm^{3}[/tex]
The length , width and height of lower cuboidal part is 15, 12 and 3 mm.
Volume of lower part is,
[tex]=15*12*3=540mm^{3}[/tex]
The volume of composite figure is,
[tex]=1873+540=2413mm^{3}[/tex]
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given [tex]f(x) =x^2 -6x+8 and g(x) =x-2[/tex], solve f(x) -g(x) using a table of values
For this case we have the following functions:
[tex]f (x) = x ^ 2-6x + 8\\g (x) = x-2[/tex]
We must subtract the functions:
[tex]f (x) -g (x) = x ^ 2-6x + 8- (x-2)\\f (x) -g (x) = x ^ 2-6x + 8-x + 2\\f (x) -g (x) = x ^ 2-7x + 10[/tex]
We build a table of values for [tex]x = 0,1,2,3.[/tex]
[tex]x = 0, f (x) -g (x) = 0 ^ 2-7 (0) + 10 = 10\\x = 1, f (x) -g (x) = 1 ^ 2-7 (1) + 10 = 1-7 + 10 = 4\\x = 2, f (x) -g (x) = 2 ^ 2-7 (2) + 10 = 4-14 + 10 = 0\\x = 3, f (x) -g (x) = 3 ^ 2-7 (3) + 10 = 9-21 + 10 = -2[/tex]
Answer:
[tex]f (x) -g (x) = x ^ 2-7x + 10[/tex]
Indicate a general rule for the nth term of the sequence when a1 = 5 and r = √3 .
an = (√3)(5)n + 1
an = (√3)(5)n - 1
an = (5)(√3)n - 1
an = (5)(√3)n + 1
the right answer is an=5(3)^(n-1)/2
Answer:
C. [tex]a_n=5\cdot (\sqrt{3})^{n-1}[/tex]
Step-by-step explanation:
We have been given that first term of a geometric sequence is 5 and common ratio is [tex]\sqrt{3}[/tex]. We are asked to find the general rule for the nth term of the sequence.
We know that a geometric sequence is in form [tex]a_n=a_1\cdot (r)^{n-1}[/tex], where,
[tex]a_n[/tex] = nth term of the sequence,
[tex]a_1[/tex] = 1st term of the sequence,
r = Common ratio,
n = Number of terms in sequence.
Upon substituting our given values in general form of geometric sequence, we will get:
[tex]a_n=5\cdot (\sqrt{3})^{n-1}[/tex]
Therefore, option C is the correct choice.
Help please I can’t solve
Answer:
Step-by-step explanation:
To solve divide the number of events by the number of possible outcomes.So in this case 60 is the event and 3 is the possible outcome because there is only 3 even numbers out of the 6. So the answer would be 20. Hope the is right. Good luck
The tax on a property with an assessed value of 90000 is 1200. What is the assessed value of a property if the tax is 2200
165,000, since 90,000÷1200=75. So 75×2200=165,000.
The assessed value of a property, given a tax amount of $2200, using the proportional ratio obtained from a known property value and tax amount pairing, is $165,000.
Explanation:The subject of your question relates to a simple form of proportionality or ratio. The scenario provided allows us to set up a ratio problem. If the tax on a property valuing $90,000 is $1,200, we can write this ratio as 1200/90000. Now, using that ratio, you want to find the property value for a tax amount of $2,200. Therefore, we can set up the equation 1200/90000 = 2200/x, with x being the property value we're trying to find. Solving for x, we find that x = (90000*2200)/1200 which equals $165,000. Therefore, the assessed value of a property if the tax amounts to $2,200 is $165,000.
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Factor the expression below by grouping. 3x-6+xy-2y.
A. (x-2)(3+y)
B.(x+2)(3-y)
C.2(x-2(xy-2y)
D.(3x-6)(Cyrus-2y)
A: (x-2)(3+y)
3x - 6 + xy - 2y
(3x - 6) + (xy - 2y)
3(x - 2) + y(x - 2)
Your two terms are: (3 + y) and (x - 2)
Answer: The correct option is (A). [tex](x-2)(3+y).[/tex]
Step-by-step explanation: We are given to factor the following expression by grouping :
[tex]E=3x-6+xy-2y~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)[/tex]
Since we are given to factorize the expression (i) by grouping, so we will take 3 common from first two terms and y common from last two terms.
The factorization of expression (i) is as follows :
[tex]E\\\\=3x-6+xy-2y\\\\=3(x-2)+y(x-2)\\\\=(x-2)(3+y).[/tex]
Thus, the required factored form of the given expression is [tex](x-2)(3+y).[/tex]
Option (A) is CORRECT.
A bank offers a 3.7% annual interest rate for a retirement savings account. A worker puts $8,000 into the account. How much will be in the account after a year? $
The worker will have approximately $8,296.00 in their retirement account after a year.
Explanation:Calculate the interest earned: Multiply the principal amount ($8,000) by the annual interest rate (3.7%): $8,000 * 0.037 = $296.00.
Add the interest earned to the principal: $8,000 + $296.00 = $8,296.00.
Therefore, the worker will have approximately $8,296.00 in their retirement account after one year due to the accrued interest.
Which choice correctly describes this event? I will flip a coin 100 times and get heads exactly 50 times and tails exactly 50 times.
A) Certain
B) Impossible
C) Unlikely
D) Likely
A.certain because everybody can do that
Answer:
unlikely just took a test
9a-14 = 4a+6 solve as equations
Answer: x=4
Step-by-step explanation: isolate variable using division
=9a-4a=6+14
=5a=20
a=20/5
a=4
which point lies on the graph of the function shown below?
y= -x^2 + 4x -2
I'm pretty sure quadrant II (2,2)
Answer:
(1,1)
Step-by-step explanation:
the point (1,1) lies on the graph of the function!
there are two cubes. the smaller cube has a surface area of 24 square units. the larger cube has a surface area that is twice that of the smaller cube. what is the volume, in cubic units, of the larger cube?
24 times 2 which will be 48
Marco buys a certain brand of shampoo for a supplier $7.25 per bottle he sells it to his customers at a makeup 25% what would the makeup be
Answer:
Markup= 1.81
Sale price =9.06
Step-by-step explanation:
The markup is the original prices times the markup rate
markup = 7.25 * 25%
= 7.25 * .25
=1.8125
We round this to the nearest cent
=1.81
The new sale price will be the original price + the markup
7.25+1.81
9.06
Answer:
9.06, or real explanation.
Step-by-step explanation:
"Marco buys a certain brand of shampoo for a supplier $7.25 per bottle he sells it to his customers at a makeup 25% what would the makeup be"
I am going to assume makeup is supposed to be markup, but I will answer all there is.
To find how much higher he charges people for the shampoo, we can multiply the original cost by the percent of increase, so in our case 7.25*.25
7.25*.25=1.8125, or $1.81
1.8125 is the total extra he charges people for the soap.
NOW FOR THE TOTAL COST-------------------
For the total cost we take the original + the added cost
1.8125+7.25=9.0625, or 9.06
answer in need
just answer the first word problem and the 3rd, first section (iii) question
will surly mark brainlist
answer fast plz.........
will earn 12 points + brainlist
i thimk this might be the answer to question 3 (iii)
I'm sorry I don't know how to solve the first question
Hector surveyed students in his homeroom about how they got to school last Monday and noted whether they arrive on time or late. The data he gathered is shown in the two-way table below.
The percentage of students surveyed whi didn't take bus to school is 48%.
From the table:
Total number of students surveyed = 10 + 3 + 8 + 4 = 25Number who did not take bus to school = 12The percentage value can be computed thus :
(Number who did not take bus to school / Total number surveyed) × 100%Now we have :
(12 / 25) × 100%
0.48 × 100%
= 48%
Complete Question:
Hector surveyed students in his homeroom about how they got to school last Monday and noted whether they arrive on time or late. The data he gathered is shown in the two-way table below.
According to the data in the table, what percentage of students in Hector’s homeroom did not take the bus to school last Monday?
Select whether each equation has no solution, one solution, or infinitely many solutions
Once put into the quadratic formula the numbers in the square root of they are negative no solutions if it is 0 then 1 solution if more then more than one solution
Answer:
Step-by-step explanation:
Please help with this problem!!!!! Thank you! I promise to mark brainlest!
Answer:
D
Step-by-step explanation:
A transformation T : (x, y) → (x + 3, y + 1). Find the preimage of the point (4, 3) under the given transformation. (7, 4) (1, 2) (4/3, 3) (-1, -2)
Answer:
(1, 2)
Step-by-step explanation:
Remember that the final shape and position of a figure after a transformation is called the image, and the original shape and position of the figure is the pre-image.
In our case, our figure is just a point. We know that after the transformation T : (x, y) → (x + 3, y + 1), our image has coordinates (4, 3).
The transformation rule T : (x, y) → (x + 3, y + 1) means that we add 3 to the x-coordinate and add 1 to the y-coordinate of our pre-image. Now to find the pre-image of our point, we just need to reverse those operations; in other words, we will subtract 3 from the x-coordinate and subtract 1 from the y-coordinate.
So, our rule to find the pre-image of the point (4, 3) is:
T : (x, y) → (x - 3, y - 1)
We know that the x-coordinate of our image is 4 and its y-coordinate is 3.
Replacing values:
(4 - 3, 3 - 1)
(1, 2)
We can conclude that our pre-image is the point (1, 2).
Final answer:
The preimage of the point (4, 3) under the transformation T : (x, y) → (x + 3, y + 1) is (1, 2), found by reversing the transformation.
Explanation:
The transformation T : (x, y) → (x + 3, y + 1) maps each point in the plane to a new point that is 3 units to the right and 1 unit up from the original point. Finding the preimage of the point (4, 3) means determining which original point would be mapped to (4, 3) by this transformation. To do this, we set up the equations x + 3 = 4 and y + 1 = 3 and solve for x and y. Solving these equations gives us the preimage (1, 2).
Here's the step-by-step math:
Set up the equations based on the transformation T:
x + 3 = 4
y + 1 = 3
Solve for x:
x = 4 - 3 = 1
Solve for y:
y = 3 - 1 = 2
Therefore, the preimage of the point (4, 3) under the given transformation is (1, 2).
If the best gas mileage is the highest rate, which truck has the BEST gas mileage?
A. Truck A, because for every mile the truck uses 19 gallons.
B. Truck A, because for every gallon the truck goes 19 miles.
C. Truck B, because for every mile the truck uses 18 gallons.
D.Truck B, because for every gallon the truck goes 18 miles.
A. Truck A , because of every mile the truck uses 19 gallons.
the door frame has measurements of 3 feet by 8 feet. What is the length of the largest table that can be brought in the house on a diagonal? someone please help me out
Answer:
sqrt(73) = 8.54 feet.
Step-by-step explanation:
Remark
My guess is without the legs.
The person bringing it in will not be able to get a table in that is longer than the hypotenuse of a right triangle.
Givens
a = 8
b = 3
c = ??
Formula
a^2 + b^2 = c^2
Solution
8^2 + 3^2= c^2
64 + 9 = c^2
c^2 = 73
c = sqrt(73)
c = 8.54
The table can be no longer than 8 feet 5 inches about.
In equilateral ΔABC, AD, BE, and CF are medians. If BC = 12, then DO =
A) 2 square root 3
B) 3
C) 6
D) 6 square root 3
Answer:
Option A) 2 square root 3
Step-by-step explanation:
we know that
The equilateral triangle has three equal sides and three equal angles (60 degrees each)
The triangle BOD is a right triangle
we have
<OBD=(60°/2)=30°
BD=12/2=6 units
tan(<OBD)=DO/BD
tan(30°)=DO/6
DO=6*tan(30°)
DO=2√3 units
Answer:
The correct answer is A. 2√3
Step-by-step explanation:
8 + y ≥ 11
List 3 values that would make this inequality true.
To make the inequality 8 + y ≥ 11 true, y could be any value equal to or greater than 3. Examples of such numbers are 3, 4, and 5.
Explanation:The inequality 8 + y ≥ 11 is asking for all the values of 'y' that, when added to 8, will give a number that is greater than or equal to 11. First, we can solve for the smallest possible 'y' by subtracting 8 from both sides of the inequality: y ≥ 11 - 8 simplifies to y ≥ 3. Therefore, any number greater than or equal to 3 will make the inequality true. Three examples of such numbers are 3, 4, and 5.
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What value of y makes the system of equations below true?
y = 9x - 7
y = 6x - 4
a.) 2
b.) 1
c.) -1
d.)-2
Answer:
a) 2
Step-by-step explanation:
9x - 7 = 6x - 4
3x = 3
x = 1
when x = 1
y = 9x - 7 = 9(1) - 7 = 2
or
y = 6x - 4 = 6(1) - 4 = 2
Answer
a) 2
Answer:
The answer is b) 1
Step-by-step explanation:
If you plug in y=9(1)-7= 2
same goes for y=6(1)-4=2
both the same answer
A standard number cube is tossed. Find P(less than 3 or odd).
Answer:
P(.6666...) or P(2/3)
Step-by-step explanation:
We know we have one single event with 3 outcomes. We can figure that 5 is the only other odd number not 1-3, so that means we have 3+1 outcomes
Ok, so no we know we have 1 singular event with 3+1 possible outcomes
This means the probability is 4/6, due to a normal die having 6 faces.
Therefore, the probability is 4/6, 2/3, or .666666......
Please note that I have not done P&S for over 1 year now and I learned it in geometry, but don't be discouraged as I googled how to do this, but if I wrong, tell me.
The Probability of obtaining a number less than 3 or odd when a standard number cube is tossed is 2/3.
In probability theory, the question is asking for the possibility of tossing a number cube and landing on a number less than 3 or an odd number.
In a standard number cube which is a die, we have six numbers (1, 2, 3, 4, 5, 6).
Numbers less than 3 are 1 and 2.
The odd numbers are 1, 3 and 5.
However, 1 is common to both cases, so we add the total unique outcomes which are 1, 2, 3, and 5.
So, we have four favorable outcomes.
To find the probability, you calculate the ratio of the favorable outcomes to the total possible outcomes.
In this case, it will be 4 favorable numbers against 6 possible numbers altogether.
Hence, P(less than 3 or odd) is 4/6 which can be simplified to 2/3.
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For what angles c in [0, 2pi) does the cos(x) have the same value as sin (3pi/4)?
Answer:
pi/4 and 7pi/4.
Step-by-step explanation:
Sin 3pi/4 is in the second quadrant and is positive and has the same value as sin pi/4.
Sin (3pi/4) = sin (pi/4) = cos pi/4.
Also as cos x is positive in the 4th quadrant cos (2pi - pi/4)
= cos 7pi/4 is also equal to sin 3pi/4.
Answer:
[tex]\frac{\pi}{4}\,,\,\frac{7\pi}{4}[/tex]
Step-by-step explanation:
Angle [tex]\frac{3\pi}{4}[/tex] lies in second quadrant in which [tex]\sin[/tex] is positive .
[tex]\sin \left ( \frac{3\pi}{4} \right )\\=\sin \left ( \pi-\frac{\pi}{4} \right )\\=\sin \left ( \frac{\pi}{4} \right )\\=\frac{1}{\sqrt{2}}[/tex]
We know that [tex]\cos[/tex] is positive in first and fourth quadrant .
In first quadrant :
We know that angle [tex]\frac{\pi}{4}[/tex] lies in first quadrant .
[tex]\cos \left ( \frac{\pi}{4} \right )=\frac{1}{\sqrt{2}}[/tex]
In fourth quadrant :
We know that angle [tex]\frac{3\pi}{4}[/tex] lies in fourth quadrant.
[tex]\cos \left ( \frac{7\pi}{4} \right )\\=\cos \left ( 2\pi-\frac{\pi}{4} \right )\\=\cos \left ( \frac{\pi}{4} \right )\\=\frac{1}{\sqrt{2}}[/tex]
So, for angles [tex]\frac{\pi}{4}\,,\,\frac{7\pi}{4}[/tex] , [tex]\cos x[/tex] has the same value as [tex]\sin \left ( \frac{3\pi}{4} \right )[/tex]
PLEASE HELP WITH THE QUESTION BELOW ASAP!! THANKS SO MUCH!
Answer:
y=-1/4x-4
Step-by-step explanation:
it simple rise over run: -1 go down one over 4 right or the other way around go up 1 and left 4 either way would work your y intercept is -4 because that is the point crossing the y-axis hope i helped!
Answer: y= (-1/7)x - 4
Step-by-step explanation:
Choose any two points on the line and use the slope equation:
(0,-4) (7,-5)
m = (y2 - y1) / (x2 - x1)
So: m = (-5 - (-4)) / (7 - 0)
m = - 1/7
Use point slope form to find the line:
(y - y1) = m(x - x1)
(y - (-4)) = (-1/7)(x - 0)
y + 4 = (-1/7)x
y = (-1/7)x - 4
what is the gcf of h4 and h8
Answer: [tex]GCF=h^4[/tex]
Step-by-step explanation:
You need to remember that:
1) The definition of Greatest common factor (GCF): This is the greatest factor that divides two numbers.
2) The Product of powers property states that:
[tex](a^m)(a^n)=a^{(m+n)}[/tex]
3) To find the Greatest common factor between two numbers, for example, you can descompose them into their prime factors and then choose the commons with the lowest exponent.
In this case, you have [tex]h^4[/tex] and [tex]h^8[/tex]
You can observe that the common base is "h", then you only need to choose the one with the lowest exponent. This is:
[tex]GCF=h^4[/tex]
4) You can also rewrite [tex]h^4[/tex] and [tex]h^8[/tex] as:
[tex]h^4=h*h*h*h\\*h^8=h*h*h*h*h*h*h*h[/tex]
You can observe that the common factor between [tex]h^4[/tex] and [tex]h^8[/tex] is: [tex]h*h*h*h=h^4[/tex]
Then:
[tex]GCF=h*h*h*h=h^4[/tex]
How do you do this?please help
Answer:
10.5 ft.
Step-by-step explanation:
1. Find the radius of the larger circle
4/7 = 3/r --> the ratio should be constant
cross-multiplication: 21 = 4r
Divide: r = 5.25 ft.
2. Find the circumference
Equation: C = 2πr
C = 2π*5.25
C = 10.5π ft.
What’s the distance between (-3,-22) and (-13,-23)
Answer:
d = sqrt(101)
Step-by-step explanation:
To find the distance between two points, we use the formula
d =sqrt ((x2-x1)^2 + (y2-y1)^2) where (x1,y1) and (x2,x2) are the points
d = sqrt ((-13--3)^2 + (-23--22)^2)
d = sqrt ((-13+3)^2 + (-23+22)^2)
d = sqrt((-10)^2 + (-1)^2)
d = sqrt(100)+1)
d = sqrt(101)
22722776 x 738399383838338
Answer:
1.6778484x10^22
Step-by-step explanation:
Answer:1.6778484e+22
Step-by-step explanation:
Just multiply the numbers