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4 years ago

13

Help !! What’s the answer ??

2 answers:

Svetach [21]4 years ago

8 0

A number is n.
The square of a number is n ².
10 times of the square of a number is 10n².

90 times the number is 90n.

10n²=90n
n²=9n
n²-9n=0
n(n-9)=0
n=0,
n-9=0,
n=9
Non-zero number is 9.

Vitek1552 [10]4 years ago

5 0

10(x^2) = 90x where x > 0 or x < 0

Factor by 10x on each sides

10x(x) = 10x(9)

x = 9

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Answer:

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Step-by-step explanation:

<em>To find the equation of the line of best fit chose two points when the line passing through them the number of points over it equals the number of point below it</em>

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From the attached graph the points (37 , 39) and (47 , 49) are the best choice to make the equation of the line of best fit

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- To find b substitute x and y in the equation by the coordinates

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3 years ago

In 2006, about 6 billion gal of renewable fuels, such as ethanol and other biofuels, were used in the United States. The ener

scoundrel [369]

Answer:

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Step-by-step explanation:

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3 years ago

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6 0

3 years ago

Help me solve this please

Semenov [28]

$\huge\underline{ \underline{ \bf{Answer࿐} }}$

parallel sides measure :

10 ft -(a)
12 ft. -(b)

Area :

44 ft²

height (h) = x

___________________

$\boxed{Area = \frac{1}{2} \times (a + b) \times h}$

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$\mathrm{ \#TeeNForeveR}$

5 0

3 years ago

What are the partial products of 42x5?

polet [3.4K]

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4 0

3 years ago

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