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geniusboy [140]
2 years ago
9

Please help me out? thank you.

Mathematics
1 answer:
anzhelika [568]2 years ago
4 0
It’s the fourth answer
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1. Sarah purchased her first car and her goal is to pay it off as soon as possible. Some months she pays
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Answer:

e

Step-by-step explanation:

e

6 0
3 years ago
What is the volume of a cone that has a radius of 12 m and a height of 3 m?
kakasveta [241]
Idk I'm learning that also
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3 years ago
When David was asked how old he was, he said " I'm three times younger than my dad, but twice as old as Rebecca. " Then little R
daser333 [38]

Using a system of equations, it is found that David is 12 years old.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

The variables are given as follows:

  • Variable x: David's age.
  • Variable y: Dad's age.
  • Variable z: Rebecca's age.

David is three times younger than the dad and twice as old as Rebecca, then:

  • x = y/3 -> y = 3x.
  • x = 2z.

Rebecca is 30 years younger than the dad, hence:

z = y - 30.

Then, since x = 2z and z = y - 30 and y = 3x, we solve for x to find David's age.

x = 2(y - 30)

x = 2(3x - 30)

x = 6x - 60

5x = 60

x = 60/5

x = 12.

David is 12 years old.

More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

8 0
2 years ago
Find the mean of the given values,29,42,45,39,36,41,38.What is the answer:39 40 35
nordsb [41]

Answer:

39 (the first option listed among the possible answers)

Step-by-step explanation:

Recall that the mean is the same as the average of the numbers you have listed, that is the addition of all divided by the number of entries you use:

mean = \frac{29+42+45+39+36+41+38}{7} =\frac{270}{7} =38.57

Therefore, rounding to the nearest integer, our answer s: 39

5 0
3 years ago
Read 2 more answers
Some1 hurry up plzzz need help
Step2247 [10]

Answer:

IM pretty sure b) and c)

Step-by-step explanation:

3 0
2 years ago
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