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3 years ago

Are 4x and 15 + x equivalent expressions? EXPLAIN I need help FAST!

Mathematics

1 answer:

mina [271]3 years ago

3 0

Answer:

x=5

Step-by-step explanation:

Step 1: you want to have x alone on one side so I will subtract one x from both sides (to remove the 1 x on the right side). Now we're left with 3x=15.

Step 2: Divide both sides by 3 (to remove the 3 in front of 3x). Now we have x=5.

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H=10 cm <br>r= 7cm <br>calculate the volume of the cylinder

Stels [109]

Answer:

V = 1538.6 cm^3

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2h where r is the radius and h is the height

V = pi (7)^2 10

V = 3.14 (49)10

V = 1538.6 cm^3

7 0

3 years ago

Read 2 more answers

If d = the number of dogs, which variable expression represents the phrase below? the sum of the number of dogs and the 6 cats O

maw [93]

Answer:

C. d + 6

Step-by-step explanation:

The sum means you are adding two variables, and since it is asking what is the sum of the number of dogs and the 6 cats, it wants you to add d + 6.

Hope this helps! Good luck! <33

6 0

3 years ago

Find area of circle

Vlad1618 [11]

Answer: 12ft^2

Step-by-step explanation:

how many more do you have. can’t you do it by now? And the least you could do is give me brainiest.

8 0

3 years ago

) Suppose that a subset of five balls will be randomly selected from an urn containing amber, blue, and green balls. (a) If the

vazorg [7]

Answer:

0.0023 = 0.23% probability that all 5 balls selected will be the same color

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the balls are selected is not important, which means that the combinations formula is used to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Desired outcomes:

Either 5 amber from a set of 6, or 5 blue from a set of 5. So

$D = C_{6,5} + C_{5,5} = \frac{6!}{5!1!} + \frac{5!}{5!0!} = 6 + 1 = 7$

Total outcomes:

5 balls selected from a set of 6 + 5 + 4 = 15. So

$T = C_{15,5} = \frac{15!}{5!10!} = 3003$

Probability:

$p = \frac{D}{T} = \frac{7}{3003} = 0.0023$

0.0023 = 0.23% probability that all 5 balls selected will be the same color

5 0

3 years ago

What is the measure of the missing angle? Round answer to nearest whole number.

LenKa [72]

Answer:

you know that you have the Opposite side and the Adjacent side. therefore you would use Tangent (T= O/A)

because you are finding the angle you would go Tan^-1(12÷20) =31°

it is 12÷20 because O/A and the 12 is the opposite side therefore It would be O and 20 is the adjacent side therefore equaling 20 so O/A = 12/20

Your answer is 31°

6 0

4 years ago