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1 year ago

HELP ASAP 10 POINTSSSS

Mathematics

1 answer:

lord [1]1 year ago

6 0

Use the Pythagorean theorem (a^2 + b^2 = c^2)

7^2 + 24^2 = x^2

x^2 = 625

x = 25

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Complete the square to transform the expression x^2+4x 2 into the form a(x − h)2 + k.

faust18 [17]

Answer:

$(x+2)^2-2$

Step-by-step explanation:

we have the expression

$x^2+4x+2$

Convert to vertex form

$a(x-h)^2+k$

where

a is the leading coefficient

(h,k) is the vertex

Complete the square

$(x^2+4x+2^2)+2-2^2$

$(x^2+4x+2^2)-2$

Rewrite as perfect squares

$(x+2)^2-2$

The coefficient a =1

The vertex is the point (-2,-2)

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3 years ago

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2 years ago

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how will the appearance of a histogram change if u use many small intervals instead of a few large intervals

ss7ja [257]

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2 years ago

Can someone help me ASAP !

Novay_Z [31]

Answer:

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2 years ago

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The weight W of an object varies inversely as the square of the distance d from the center of the earth. At sea level (3978 mi

eimsori [14]

$\bf \begin{array}{llllll}
\textit{something}&&\textit{varies inversely to}&\textit{something else}\\ \quad \\
\textit{something}&=&\cfrac{{{\textit{some value}}}}{}&\cfrac{}{\textit{something else}}\\ \quad \\
y&=&\cfrac{{{\textit{k}}}}{}&\cfrac{}{x}
\\
&&y=\cfrac{{{ k}}}{x}
\end{array}$

with "k" being the "constant of variation"

so. hmm in this case is "w" inversely varying to the square of the distance or d²

thus $\bf w=\cfrac{k}{d^2}\qquad 
\begin{cases}
d=3978\\
w=129
\end{cases}\implies 129=\cfrac{k}{3978^2}$

solve for "k", to see what the constant of variation is

and plug it back in $\bf w=\cfrac{k}{d^2}$

now.. .to find her weight when she's 144miles above the surface, well
that's just $\bf w=\cfrac{k}{(3978+144)^2}$

and since you already know what "k" is, just divide and simplify away, to get "w"

7 0

2 years ago