The sum of two numbers is
40
. One number is
4
times as large as the other.

Answers

Answer 1
x+4x=40. 5x=40. x=40\5. x=8 8 is one of the numbers. To find the other number we must multiply 8 by 4 which equals to 32. so the numbers are 8 and 32. check - 8+32=40.

Related Questions

John has 6 green marbles and 4 purple marbles. He chooses a marble at random, writes down its color, and then puts the marble back. He performs this process 5 times. What is the probability that he chooses exactly two green marbles?

Answers

The probability that John chooses exactly two green marbles is calculated using the binomial probability formula and is found to be 720/3125.

To solve this problem, we can use the binomial probability formula because John is performing independent trials of the same experiment and he is interested in the probability of exactly two successes (picking a green marble) in a specific number of trials (5).

The binomial probability formula is: [tex]P(X = k) = (n choose k) \times p^k \times (1-p)^{n-k[/tex]

For John's case:

n = 5 (since he is picking 5 marbles).

k = 2 (he wants exactly two green marbles).

p = 6/10 or 3/5 (because there are 6 green marbles out of a total of 10 marbles).

Using the formula, the probability that John picks exactly two green marbles is:

[tex]P(X = 2) = (5 choose 2) \times (3/5)^2 \times (2/5)^{5-2[/tex]

Calculating further:

[tex]P(X = 2) = 10 \times (3/5)^2 \times (2/5)^3 = 10 \times 9/25 \times 8/125 \\P(X = 2) = 720/3125[/tex]

Write an equation for each
1. 10
2. 12
4. 16
6. 20

Answers

when x is 1 and y is 10

x(10) = y

When x is 2 and y is 12

x(6) = y

when x is 4 and y is 16

x(4) = y

When x is 6 and y is 20

x(4) - 4 = y

hope this helps

The coordinates of the vertices of a polygon are (−2,−2), (3,−3), (4,−6), (1,−6), and (−2,−4).



What is the perimeter of the polygon to the nearest tenth of a unit?



15.3 units

16.9 units

17.5 units

17.9 units

Answers

The perimeter of the polygon to the nearest tenth of a unit  [tex]\boxed{16.9{\text{ units}}}.[/tex] Option (b) is correct.

Further explanation:

The distance between the two points can be calculated as follows,

[tex]\boxed{{\text{Distance}}=\sqrt {{{\left( {{x_2} - {x_1}} \right)}^2} + {{\left( {{y_2} - {y_1}} \right)}^2}}}[/tex]

Given:

The coordinates of the vertices of the polygon are [tex]\left({ - 2, - 2}\right),\left( {3, - 3}\right),\left( {4, - 6}\right),\left( {1, - 6}\right)[/tex] and [tex]\left( { - 2, - 4}\right).[/tex]

Explanation:

Consider the points as A [tex]\left( { - 2, - 2} \right), B\left( {3, - 3} \right), C\left( {4, - 6} \right), D\left( {1, - 6} \right)[/tex] and  [tex]E\left({ - 2, - 4} \right).[/tex]

The distance between point A and point B can be calculated as follows,

[tex]\begin{aligned}{\text{Distance}}&=\sqrt {{{\left( {3 + 2} \right)}^2} + {{\left( { - 3 + 2}\right)}^2}}\\ &= \sqrt {25 + 1}\\&= \sqrt {26}\\&= 5.2\\\end{aligned}[/tex]

The distance between point B and point C can be calculated as follows,

[tex]\begin{aligned}{\text{Distance}}&=\sqrt {{{\left( {4 - 3} \right)}^2} + {{\left( { - 6 + 3} \right)}^2}}\\&= \sqrt {{1^2} + 9}\\&= \sqrt {10}\\&= 3.17\\\end{aligned}[/tex]

The distance between point C and point D can be calculated as follows,

[tex]\begin{aligned}{\text{Distance}}&= \sqrt {{{\left({1 - 4} \right)}^2} + {{\left( { - 6 + 6}\right)}^2}}  \\&=\sqrt {{3^2} + 0}\\&= \sqrt9\\&= 3\\\end{aligned}[/tex]

The distance between point D and point E can be calculated as follows,

[tex]\begin{aligned}{\text{Distance}}&= \sqrt {{{\left( { - 2 - 1}\right)}^2} + {{\left( { - 4 + 6}\right)}^2}}\\&= \sqrt{ - {3^2} + {2^2}}\\&= \sqrt {9 + 4}\\&= \sqrt {13}\\&= 3.61\\\end{aligned}[/tex]

The distance between point E and point A can be calculated as follows,

[tex]\begin{aligned}{\text{Distance}} &= \sqrt {{{\left( { - 2 + 2} \right)}^2} + {{\left( { - 4 + 2} \right)}^2}}\\ &= \sqrt {{0^2} + {2^2}}\\&=\sqrt4\\&= 2\\\end{aligned}[/tex]

The perimeter of the polygon can be calculated as follows,

[tex]\begin{aligned}{\text{Perimeter}}&= 5.12 + 3.17 + 3 + 3.61 + 2\\&= 16.9\\\end{aligned}[/tex]

Option (a) is not correct.

Option (b) is correct.

Option (c) is not correct.

Option (d) is not correct.

The perimeter of the polygon to the nearest tenth of a unit [tex]\boxed{16.9{\text{ units}}}.[/tex] Option (b) is correct.

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Answer details:

Grade: High School

Subject: Mathematics

Chapter: Coordinate geometry

Keywords: Coordinates, vertices, polygon, x-coordinate, y-coordinate, perimeter, circumference, nearest tenth unit, distance formula.

Answer:

here is the answer

Step-by-step explanation:

the difference between the measures of two supplementary angles is 42. find both

Answers

supplementary angles will add up to 180

x - (180 - x) = 42
x - 180 + x = 42
2x - 180 = 42
2x = 42 + 180
2x = 222
x = 222/2
x = 111

180 - x =
180 - 111 =
69

ur angles are : 69 and 111

Answer:

69 and 11,  took me 1 hour to slove this

Step-by-step explanation:

There are 4 dogs, 6 cats, a rooster and 8 pigs on a farm. What is the ratio of pigs to all the other animals?

Answers

The ratio would be 8:10. Because there are 8 pigs and 10 other animals.

Answer:

Its 8:11 because theres eleven animals and 8 pigs

Step-by-step explanation:

which property is illustrated the following statement? 3z+4=4+3z

Answers

Commutative Property 

Answer:

Commutative additive property.

Step-by-step explanation:

Given  : 3z+4=4+3z

To find : which property is illustrated the following statement.

Solution : We have given  

3z + 4 = 4 + 3z.

Commutative additive property : a + b = b + a .

Example :  2 + 3 = 3 +2 = 5.

Hence  this the commutative additive property 3z + 4 = 4 + 3z.

Therefore, Commutative additive property.

what is the perimeter of a polygon with sides measuring; (a) cm,(a+1) cm;(a+2) cm and 3(a+3)?

Answers

To find the perimeter of a polygon, simply add the sides.
Here, the sides are: a, a+1, a+2, and 3(a+3)
So,
[tex]a+(a+1)+(a+2)+3(a+3)[/tex]
Now, do the distributive property and combine like terms,[tex]a+a+1+a+2+3a+9[/tex][tex]6a+12[/tex]

The answer is 6a + 12. Hope this helps and have a terrific day!

If a penny is tossed four times and comes up heads all four times, the probability of heads on the fifth trial is

Answers

1/2 * 1/2 * 1/2 * 1/2 * 1/2 = 0.03125 = 1/32 This is your answer


Final answer:

The probability of heads on the fifth trial is still 0.5, just like any other coin flip.

Explanation:

The probability of heads on the fifth trial is still 0.5, just like any other coin flip. The outcome of each coin flip is independent of the previous flips, so each trial has the same probability of resulting in heads or tails.

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Question 8 the price of a cup of coffee was $2.55 yesterday. today, the price fell to $2.40 . find the percentage decrease. round your answer to the nearest tenth of a percent. %

Answers

the answer would be 5.9%

Patty has 8 flowerpots, and she wants to plant a different type of flower in each pot. There are 11 types of flower available at the garden shop. How many different ways can choose the flowers?

Answers

The combination formula is given by

C(n, r) = [tex] \frac{n!}{(n-r)!r!} [/tex]

C(11, 8) = [tex] \frac{11!}{(11-8)!8!} [/tex]

C(11, 8) = 165

So, there are 165 ways of choosing 8 flowers out of 11 flowers

1=logx solve this equation for x. Round your answer to the nearest hundred.

Answers

logx=1
10¹=x
x= 10
that's the answer

A stock value doubles every 42 days. If the stocks start out with $5.00, what will the value of the stock be in 18 weeks?

A.)$125.00

B.)$15.00

C.)$30.00

D.)$40.00

Answers

We know that the stock value doubles every 42 days and that the stocks start out with $5.00.
We should find the value of the stock in 18 weeks. Let us denote this value with S.
One week has 7 days, so 18 weeks have: 18*7=126 days.
In order to find how many times the stocks value was doubled we should divide this number of days with 42: 126/42=3
So, after 18 weeks the value of the stock would be: 5->5*2->(5*2)*2=40

answer:
D.)$40.00

What is the slope of the graph?
slope = -3
slope = -1/3
slope = 1/3
slope = 3

Answers

Answer:

slope = -3

Step-by-step explanation:

To find the slope of the graphed line, we can use the slope formula:

[tex]\boxed{\begin{array}{l}\underline{\textsf{Slope formula}}\\\\m=\dfrac{y_2-y_1}{x_2-x_1}\\\\\textsf{where:}\\\phantom{w}\bullet\;\;m\; \textsf{is the slope.}\\\phantom{w}\bullet\;\;(x_1,y_1)\;\textsf{and}\;(x_2,y_2)\;\textsf{are two points on the line.}\end{array}}[/tex]

First, identify two points on the line:

(x₁, y₁) = (0, 3)(x₂, y₂) = (1, 0)

Substitute the coordinates into the slope formula:

[tex]m=\dfrac{0-3}{1-0}=\dfrac{-3}{1}=-3[/tex]

Therefore, the slope of the graphed line is:

[tex]\Large\boxed{\boxed{\textsf{slope}=-3}}[/tex]

Factor the expression over the complex numbers.
x^2+50

Answers

Answer:

[tex](x+5\sqrt{2}i)(x-5\sqrt{2}i)[/tex]

Step-by-step explanation:

The factorization is in the form (x-a)(x-b) where a,b are zeros of the equation [tex]x^{2} +50=0[/tex].

[tex]x^{2} =-50[/tex]

[tex]x =\sqrt{-50}[/tex]

[tex]x =\sqrt{50}i = 5\sqrt{2}i[/tex] and [tex]x =-\sqrt{50}i = -5\sqrt{2}i[/tex]

So, the factorization is [tex](x+5\sqrt{2}i)(x-5\sqrt{2}i)[/tex]

Complex numbers are numbers with real and imaginary part.

The factorized expression is [tex]\mathbf{x^2 + 50 = (x^2 +5i\sqrt 2)(x^2 -5i\sqrt 2) }[/tex]

The expression is given as:

[tex]\mathbf{x^2 + 50}[/tex]

Set to 0

[tex]\mathbf{x^2 + 50 = 0}[/tex]

Subtract 50 from both sides

[tex]\mathbf{x^2 = -50}[/tex]

Take square roots

[tex]\mathbf{x = \sqrt{-50}}[/tex]

Expand

[tex]\mathbf{x = \sqrt{25 \times -2}}[/tex]

Take square roots of 25

[tex]\mathbf{x =\pm 5\sqrt{-2}}[/tex]

Expand

[tex]\mathbf{x = \pm5\sqrt{2 \times -1}}[/tex]

Split

[tex]\mathbf{x =\pm 5\sqrt{2} \times \sqrt{-1}}[/tex]

In complex numbers,

[tex]\mathbf{\sqrt{-1} = i}[/tex]

So, we have:

[tex]\mathbf{x = \pm5i\sqrt{2}}[/tex]

So, we have:

[tex]\mathbf{x^2 + 50 = (x^2 +5i\sqrt 2)(x^2 -5i\sqrt 2) }[/tex]

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how do you factor 2x^3+5y^3

Answers

All you do is...
[tex]\mathrm{Apply\:sum\:of\:cubes\:rule:\:}x^3+y^3=\left(x+y\right)\left(x^2-xy+y^2\right)[/tex]

[tex]2x^3+5y^3=\left(\sqrt[3]{2}x+\sqrt[3]{5}y\right)\left(\left(\sqrt[3]{2}\right)^2x^2-\sqrt[3]{2}\sqrt[3]{5}xy+\left(\sqrt[3]{5}\right)^2y^2\right)[/tex]
[tex]\left(\sqrt[3]{2}x+\sqrt[3]{5}y\right)\left(\left(\sqrt[3]{2}\right)^2x^2-\sqrt[3]{2}\sqrt[3]{5}xy+\left(\sqrt[3]{5}\right)^2y^2\right) \ \textgreater \ Refine[/tex]

[tex]\left(\sqrt[3]{2}x+\sqrt[3]{5}y\right)\left(2^{\frac{2}{3}}x^2-\sqrt[3]{10}xy+5^{\frac{2}{3}}y^2\right)[/tex]

Hope this helps!

How to multiply fractions with a mixed number?

Answers

Okay here's an example so if we have 2, 3/2*1/2 we convert the mixed numbers to improper fractions. So in order to solve a mixed number you add the denominator, numerator and whole to get 7/2*1.2
So Multiple
7/2*1/2
Refine the fractions
7/2*2
Multiple the numbers 2*2=4 to get
7/4
and that equals 1, 3/4

A barrel of oil contains 42.0 gallons. how many liters is this? (1 gal = 3.785 l)

Answers

155 Liters, multiply the amount of liters within a gallon by the amount shown (42) 3.875 times 42= 155. hope i helped

Final answer:

A 42.0-gallon barrel of oil is equivalent to 158.97 liters, calculated by multiplying the number of gallons by the conversion factor of 3.785 liters per gallon.

Explanation:

To discover out how numerous liters are in 42.0 gallons of oil, given that 1 gallon is proportionate to 3.785 liters, you'd perform the taking after calculation:

Multiply the number of gallons by the conversion factor from gallons to liters.

42.0 gallons × 3.785 liters/gallon = 158.97 liters.

Therefore, a barrel of oil, which contains 42.0 gallons, is equivalent to 158.97 liters.

A cell phone company charges a monthly fee plus $0.25$0.25 for each text message. The monthly fee is $30.00$30.00 and you owe $59.50$59.50. Write and solve an equation to find how many text messages xx you had.An equation is

Answers

Equation: $59.50 - $30.00 = $0.25X =$29.50 = $0.25X =$29.50/$0.25 = X = 118 text messages used Explanation - First you take the total bill less the monthly fee of $30 to get $29.50. This amount represents the amount of the bill generated by the text messages you used. Then you divide this amount by $0.25 to get the total number of text, which is 118.

For a cylinder open at one end with radius r ⁢ cm and height h ⁢ cm, find the dimensions giving the minimum surface area, given that the volume is 44 cm3.

Answers

Final answer:

To find the dimensions of a cylinder with one open end that minimizes its surface area given a volume of 44 cm³, use calculus and the formulas for the cylinder's volume and surface area. The solution results in radius r ≈ 1.34 cm and height h ≈ 9.87 cm.

Explanation:

For a cylinder open at one end, the surface area is given by the formula A = πr² + πrh, where r is the radius and h is the height.
The volume of a cylinder is given by the formula V = πr²h. Given that V=44 cm³, we can write the volume equation as h = V / (πr²).
Substituting this into the surface area equation, we get A = πr² + πr(V / (πr²)) = πr² + V/r.
We want to minimize the surface area, so we take the derivative of A with respect to r, set it equal to zero and solve for r.
Doing this gives us: dA/dr = 2πr - V/r² = 0 => r = cuberoot(V/2π).
Substituting V=44 cm³ into this, we get r = cuberoot(22/π) ≈ 1.34 cm.
Substituting r back into h = V / (πr²), we derive that h = 44 / (π * (1.34)²) ≈ 9.87 cm.
Therefore, the dimensions that will minimize the surface area of the cylinder given that the volume is 44 cm³, are approximately r = 1.34 cm and h = 9.87 cm.
This is a classic problem of optimization in calculus.

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Find the measure of ∠D if ∠A = 5 2 x + 30 ∠B = 7 2 x + 40 ∠C = 9 2 x + 10 ∠D = 5 2 x + 20

Answers

okay so my answer may or may not be correct I am sorry if it is not. 
<A= 52x+30
<B= 72x+40
<C= 92x+10
<D= 52x+20
I put <A and <B together and <C and <D together<A and <B :
 52x+30 = 72x+40
-52            -52          30 = 20x+40         -40           -40
-10 = 20x/20   /20-0.5 = xwhen you put it into the equation as 52(-0.5)+30 you get 4, and when you put it in 72x+40 you also get four. 
Now for  <C and <D 92x+10 = 52x+20-52           -5240x+10 = 20        -10   -1040x = 10/10      /10x=4

For anyone who needs the measure itself, it's 70.

Peter begins his kindergarten year able to spell 10 words. He is going to learn to spell 2 new words every day. Determine the minimum number of whole days it will take for him to be able to spell at least 75 words.

Answers

You start of with 65 (deduct 10 from 75 as he already knows 10) then divide it by two. This give you 32.5 rounded to 33.

Hope this helped :D

Peter needs 33 whole days to be able to speak 75 words.

What are inequalities and their types?

Inequality is a relation that compares two numbers or other mathematical expressions in an unequal way.

The symbol a < b indicates that a is smaller than b.

When a > b is used, it indicates that a is bigger than b.

a is less than or equal to b when a notation like a b.

a is bigger or equal value of an is indicated by the notation a b.

Given, Peter begins his kindergarten year able to spell 10 words.

He is going to learn to spell 2 new words every day.

Assuming no. of days it will take him to be able to spell at least 75 words

is d.

∴ The inequality that represents this scenario is 2d + 10 ≥ 75.

2d ≥ 65.

d ≥ 32.5 but it will take him 33 whole days to learn 75 words.'

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Last Saturday there were 1486 people at a cinema. There were about the same number of people in each of the 6 theaters. Between which 2 numbers does the number of people fall?

Answers

247 and 248 because 247 in two theaters and 248 in the other four

2(x+14)+(2x-14)= do you know this

Answers

yes i do 4x+14 will be final answer 

The simplified form of the expression 2(x+14)+(2x-14) is 4x + 14.

What is an expression?

One mathematical expression makes up a term. It might be a single variable (a letter), a single number (positive or negative), or a number of variables multiplied but never added or subtracted. Variables in certain words have a number in front of them. A coefficient is a number used before a phrase.

Given:

An expression,

2(x+14)+(2x-14).

Simplifying,

2(x+14)+(2x-14),

= 2x + 28 + 2x - 14

= 4x + 28 - 14

= 4x + 14

Therefore, the solution is 4x + 14.

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Together, two apples have 1/5 gram of fat. How many apples have a total of 4 grams of fat? what would a proportion be for this problem?

Answers

1/5+1/5+1/5+1/5+1/5=1
1/5+1/5+1/5+1/5+1/5=1
1/5+1/5+1/5+1/5+1/5=1
1/5+1/5+1/5+1/5+1/5=1


Now since its 2 apples per 1/5 then u multiply 20 by 2 so ur answer would be 40

40 apples = 4 grams of fat

The function, f(x)=45/x models the volume of a gas in a balloon under xx units of pressure at a constant temperature. Which best describes the domain of f(x) ?

Answers

my guess will be postive real numbers since pressure can not be negative or imaginary but can be a fraction or irrational

524127 Add mathematical signs (+, -, ), (*, /) in between all or some oft he above digits so the result of the created mathematical equation will be 100

Answers

we add mathematical signs +, -, x, /
524127 = 100
5 x (-2 +4 ) x (1+2+7)
=5x2 x 10
=10 x 10 
=100

A public interest group hires students to solicit donations by telephone. After a brief training period students make calls to potential donors and are paid on a commission basis. Experience indicates that early​ on, these students tend to have only modest success and that 80​% of them give up their jobs in their first two weeks of employment. The group hires 7 ​students, which can be viewed as a random sample.

Answers

I need help with the answer?

There is a large bag with marbles in it. there are 23 red ones, 16 black ones, 5 blue ones, 17 orange ones, 4 white ones, and 15 purple ones. juanita reaches in without looking and selects one marble. what is the probability that it is purple? 1 15 1 80 7 3 16

Answers

It would be 30/160. YOU'RE WELCOME :)
23 red, 16 black, 5 blue, 17 orange, 4 white, 15 purple.....
for a total of : 80 marbles

the probability of picking a purple one is 15/80 which reduces to 3/16 <=

PLEASE ANSWER ASAPPPPP!!!!!!! BRAINLIEST TO CORRECT!!!!!!!

Answers

[tex]f(x)=(x-7)^3(x+1)^2(x-5)[/tex]

Complete the indirect proof to show that two supplementary angles cannot both be obtuse angles. given: angle1 and angle2 are supplementary. prove: angle1 and angle2 cannot both be obtuse. assume that two supplementary angles can both be obtuse angles. so, assume that angle1 and angle2 are obtuse. then mangle1 > 90° (equation 1) and mangle2 > ° (equation 2) by the definition of angles. adding the two inequalities, mangle1 + mangle2 > ° (equation 3). however, by the definition of supplementary angles, mangle1 + mangle2 = (equation 4). so equation 3 contradicts the given information. this means the assumption is , and therefore angle1 and angle2 both be obtuse.

Answers

Final answer:

The proof was completed by assuming that two supplementary angles could both be obtuse, which would mean that their sum is more than 180°. This contradicts the definition of supplementary angles, where their sum should always be exactly 180°, and hence proves that two supplementary angles cannot both be obtuse.

Explanation:

To complete the indirect proof, we start by assuming that two supplementary angles, let's call them angle1 and angle2, can indeed both be obtuse angles. An obtuse angle is defined as an angle which measures more than 90°. Therefore, if both angle1 and angle2 are obtuse, they would each measure more than 90°, meaning that their sum (angle1 + angle2) would measure more than 180°.

However, the definition of supplementary angles is such that their sum should always be exactly 180°. Therefore, we reach a contradiction in our assumed scenario: the sum of angle1 and angle2 cannot be both more than 180° (by our assumption that they are both obtuse) and exactly 180° (by the known definition of supplementary angles).

This contradiction means that our initial assumption was incorrect, thus completing the proof. In other words, two supplementary angles cannot both be obtuse, as it would contradict the definition of supplementary angles.

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