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3 years ago

If x-y=9,x²+y²=27,then x-y=?

Mathematics

2 answers:

lord [1]3 years ago

8 0

Answer:

x-y is equal to nine and you are asking x-y so the ans is9

iVinArrow [24]3 years ago

7 0

Answer:

x-y=9

x²+y²=27

then x-y=9

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4 years ago

Write a proportion for the statement. 40 is to 10 as 32 is to 8.

Svetach [21]

Hi! ⋇

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All proportions have this form:

$\sf{\dfrac{a}{b}=\dfrac{c}{d}}$ , Where $\sf{\dfrac{a}{b}}$ is equal to $\sf{\dfrac{c}{d}}$ .

If $\sf{\dfrac{a}{b}\neq\dfrac{c}{d}}$ , it's not a proportion.

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Here we have two pairs of numbers:

40,10 and 32,8.

Written As a proportion, they look like :

$\sf{\dfrac{40}{10}=\dfrac{32}{8}}$

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2 years ago

Find the percent of increase from 40 gallons to 89 gallons. Round to the nearest tenth of a percent if necessary.

fredd [130]

Solution

- 89 gallons contains 40 gallons twice such that:

$89=40+40+9$

- This means that we can find at least 200% of 40 gallons in 89 gallons. This gives us what to expect.

- To get the percentage we are looking for, we should use the formula:

$\frac{\text{new}}{\text{old}}\times100\text{ \%}$

New, in this case, is 89 gallons, Old is 40 gallons.

- Thus, we can calculate the percentage as follows:

$\begin{gathered} \frac{89}{40}\times100 \\ =2.225\times100 \\ =222.5\text{ \%} \end{gathered}$

Thus, the answer is 222.5%

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1 year ago

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Nikitich [7]

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3 years ago

Read 2 more answers

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Hoochie [10]

Answer:

x^3-8x^2+5x+14

Step-by-step explanation:

(x+1)(x-2)(x-7)

x^3-8x^2+5x+14

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3 years ago

If x-y=9,x²+y²=27,then x-y=?​

If x-y=9,x²+y²=27,then x-y=?