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3 years ago

If x + 3y = 13 and x + y = 5, the value of y is which of the following?

Mathematics

1 answer:

lana [24]3 years ago

5 0

Just change the y to all of the answers. The correct answer to this particular one is D. 4

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Caroline and Sarah win some money and share it in the ratio 2:1. Caroline gets £45 more than Sarah. How much did Sarah get?

SVEN [57.7K]

Answer:

Step-by-step explanation:

ratio of 2:1....total of 3....so caroline gets 2/3 of the money and sarah gets 1/3 of the money. Let the total amount of money be x.

so caroline = 2/3x and sarah = 1/3x

caroline gets 45 more then sarah

2/3x = 1/3x + 45

2/3x - 1/3x = 45

1/3x = 45

x = 45 * 3

x = 135.....so the total money is $ 135

caroline gets 2/3 of it.......2/3(135) = 270/3 = $ 90

sarah gets 1/3 of it......1/3(135) = 135/3 = $ 45 <===

4 0

3 years ago

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Can someone help me with this please

Stells [14]

Answer:

Step-by-step explanation:

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8 0

3 years ago

The distribution of resting pulse rates of all students at Santa maria high school with approximately normal with a mean of 80 b

olga_2 [115]

Answer:

85 beats per minute

Step-by-step explanation:

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5 0

3 years ago

Which number is greatest?

user100 [1]

Answer:

$6.23 \times 10 {}^{12}$

Step-by-step explanation:

$6 .23\times 10 {}^{12}$

$6.23 \times 1000000000000 \\ 6230000000000$

7 0

3 years ago

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Solve y

Ksivusya [100]

The value of y in $-3 = 7\left(y-\dfrac97\right)$ is 6/7

<h3>How to solve for y?</h3>

The equation is given as:

$-3 = 7\left(y-\dfrac97\right)$

Open the bracket

-3 = 7y - 9

Add 9 to both sides of the equation

7y = 6

Divide both sides by 7

y= 6/7

Hence, the value of y in $-3 = 7\left(y-\dfrac97\right)$ is 6/7