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4 years ago

Please help in geometry

Mathematics

2 answers:

nekit [7.7K]4 years ago

4 0

90 degrees

the diagonals intersect at right angles

Nataly_w [17]4 years ago

4 0

It's either 90 or 180 degrees. Without seeing the picture, we don't know how the corners are labeled.

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Which expression has the same value as -18 divided by -9?

jenyasd209 [6]

Answer:

<h3>-8 divided by (-4)</h3>

Step-by-step explanation:

-18 divided by -9 is <u>+2</u> and that is what you want.

-18 divided by 2 is -9, not correct.

-12 divided by (-3) is +4, not correct.

-10 divided by 5 is -2, not correct.

Leaving the <em>correct</em> answer: -8 divided by (-4) is <u>+2</u>.

Remember: a negative times a negative equals a positive.

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3 years ago

A stone is thrown vertically upward from a platform that is 20 feet height at a rate of 160 ft/sec. Use the quadratic function h

Nutka1998 [239]

Check the picture below.

$\textit{vertex of a vertical parabola, using coefficients} \\\\ y=\stackrel{\stackrel{a}{\downarrow }}{-16}x^2\stackrel{\stackrel{b}{\downarrow }}{+160}x\stackrel{\stackrel{c}{\downarrow }}{+20} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right)$

$\left(-\cfrac{ 160}{2(-16)}~~~~ ,~~~~ 20-\cfrac{ (160)^2}{4(-16)}\right) \implies \left( - \cfrac{ 160 }{ -32 }~~,~~20 - \cfrac{ 25600 }{ -64 } \right) \\\\\\ \left( 5 ~~~~ ,~~~~ 20 +400 \right)\implies (\stackrel{seconds}{5}~~,~~\stackrel{feet}{420})$

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2 years ago

Gina is buying bags of apples at the grocery store. Each bag of apples has five apples in it. Which equation shows the relations

Nadya [2.5K]

Answer:

y=5x

Step-by-step explanation:

Given no of bags is x

No of apples in each bag is 5

Thus no of apples in x bags can be obtained by multiplying no of bags(x in this case) with No of apples in each bag (5 in this case).

Total no of apples in x bag = 5*x = 5x

As y represent relationship between number of apples and bag. 5x will be equal to y.

it can be represented as y = 5x

Thus equation A y=5x shows the relationship between the number of apples, y, and the number of bags, x

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VMariaS [17]

Answer:

2000

Step-by-step explanation:

Khan academy answer

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sammy [17]

Answer:

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Step-by-step explanation:

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