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3 years ago

If x = 7-p and y = 3p + 4, which of the following

Mathematics

2 answers:

Dmitry [639]3 years ago

4 0

Answer:

y = -3x + 25

Step-by-step explanation:

You have to find p first.

You can do this by using the x equation and moving the p to the right by adding p to each side to get p + x = 7.

Now, move the x to the left by subtracting x on both sides to get a final answer of p = 7 - x

Then, you can substitute p into the y equation.

So, y = 3(7 - x) + 4.

Distribute to get y = 21 - 3x + 4

Combine like factors to get y = -3x + 25

Hope this helps! :)

lara31 [8.8K]3 years ago

3 0

Answer:

Step-by-step explanation:

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Nicole has nine dollars to spend on cards she finds friends with the same amount of money to split the cost of a set once it cos

anyanavicka [17]

Answer:

Each Friend will get $\frac{x}{3}$ cards.

Step-by-step explanation:

Let the number of cards be x.

Given:

Amount Nicole used to spend on cards = $9

Total cost of one set =$27

Also, she finds friends with the same amount of money to split the cost of a set.

So, Number of friends she finds can be calculated by dividing the Cost of 1 set with amount of money Nichole used to spend on cards.

Number of friends she finds = $\frac{27}{9} = 3$

Hence she finds 2 friends and 1 is nichole hence there are 3 persons carrying $9 to buy $27 set of card

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Number of cards each friend = $\frac{x}{3}$

Hence Each Friend will get $\frac{x}{3}$ cards.

4 0

3 years ago

164 is 55% of what number?<br><br> Please somebody help me

monitta

This is how you solve it; but first of all convert the percent into a decimal;55%= 0.55

0.55x = 164 (divide by 0.55 on both sides)
x = 164/0.55
x = 298.18 (rounded to the nearest hundredth)
so 164 is 55% of 298.18(rounded)

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sveticcg [70]

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