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Inga [223]
3 years ago
9

Jane had $7 and her sister had $2. Their parents gave each of them an equal amount of money . Then, Jane had twice as much money

as her sister, how much money did their parents give each of them?
PLEASE HELP BEEN STUCK FOR LIKE AN HOUR!!
Mathematics
2 answers:
Mazyrski [523]3 years ago
5 0

Let's use "x" as the equal amount of money.

Jane now has 7+x dollars

Her sister had 2+x dollars

Since Jane has twice the amount of her sister's money, her sister's money now becomes 2(2+x), or 2 times 2+x


Now just solve for x.

7+x = 2(2+x)

Distribute the 2 to 2+x

7+x = 4 + 2x

Subtract x from both sides

7 = 4 + x

Subtract 4 from both sides

3 = x

<em>Their parents gave them $3.</em>

If you want to check your work, just plug in 3 as x for their equations.

Jane: 7 + 3 = 10

Jane's sister: 2 + 3 = 5

10 is in fact twice of 5.

slega [8]3 years ago
3 0

Answer:

They each got $3.00

Step-by-step explanation:

7+x = 2(2+x)

7+x = 4 + 2x

-x = -3

x=3

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Julianna has thirty two pieces of candy in a candy jar. Julianna only has two kinds of candy.
bazaltina [42]

The number of jolly rangers candy she has is 22. The number of twix bars she has is 11.

<h3>What are the linear equations that represent this question?</h3>

j + t = 33 equation 1

4t = 2j

j = 2t equation 2

Where:

j = number of jolly rangers

t = j = number of twix

<h3>How many twix candies does Julianna have?</h3>

Substitute for j in equation 1 using equation 2

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3t = 33

t = 11

<h3>How many jolly candies does Julianna have?</h3>

Subsitute for t in equation 2

j = 11 x 2 = 33

To learn more about simultaneous equations, please check: brainly.com/question/25875552

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2 years ago
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Snowcat [4.5K]
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3 years ago
Solve for x. 16 = -2x - 1
Lelu [443]

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That should be the correct answer

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A=170 rounded to the nearest 10<br> b=93.2 rounded to 1 DP<br> Find the minimum (to 2 DP) of a÷b
ahrayia [7]

A is already rounded to the nearest tenth because the ones place is zero.

B is already rounded to one decimal place

C: 170 / 93.2 = 1.82403

Rounded to two decimal places = 1.82

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