3 years ago

EStimate how many 12-ich rulers will be about the same length as a sheet of paper

Mathematics

1 answer:

Alla [95]3 years ago

8 0

Answer:

A standard sheet of paper is 11 by 8.5 inches.

The estimated length of a standard sheet of paper is one 12 inch ruler.

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The triangles below are similar.

Simora [160]

Answer:

Forgive me if i'm wrong, but I think it is A D and E

Step-by-step explanation:

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2 years ago

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A cherry tree showdown is 12 meters long. Not far away, an elms tree showdow is 8 meters long. If the cherry tree is 9 meters ta

Maslowich

the elm tree would be 6 meter long

since the first cherry tree and elm is 3 meters apart

so this will be 9-3 is equal to 6

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3 years ago

two letters weigh 90g together. one letter weighs twice as much as the other. what is the weight of the heavier letter?

NeX [460]

Answer:

60g

Step-by-step explanation:

60/2=30

60+30=90

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2 years ago

The ellipse with x-intercepts (2, 0) and (-2, 0); y-intercepts (0, 4) and (0, -4).

masya89 [10]

Answer:

$\dfrac{x^2}{4}+\dfrac{y^2}{16}=1$

Step-by-step explanation:

If the ellipse has its x-intercepts at points (2, 0) and (-2, 0) and y-intercepts at points (0, 4) and (0, -4), then its symmetric across the y-axis and across the x-axis.

Moreover,

$a=2\\ \\b=4$

The equation of such ellipse is

$\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}=1$

Hence, the equation of the ellipse is

$\dfrac{x^2}{2^2}+\dfrac{y^2}{4^2}=1\\ \\ \\\dfrac{x^2}{4}+\dfrac{y^2}{16}=1$

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2 years ago

Find f(7) for<br> the function<br> below.<br> F(x)=1/2 x 2^x

Anastasy [175]

Step-by-step explanation:

$\begin{aligned}\rm f(x)&=\rm\frac{1}{2}\times 2^x\\\rm f(7)&=2^{-1}\times 2^7\\&=2^{-1+7}\\&=2^{7-1}\\&=2^6\\&=2^6\\&=\bf 64\end{aligned}$

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2 years ago