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3 years ago

5

A student finishes the first half of an exam in the time it takes him to finish the second half. If the entire exam takes him an

hour, how many minutes does he spend on the first half of the exam?

1 answer:

strojnjashka [21]3 years ago

8 0

Part 1 took 30 minutes and part 2 took 30 minutes

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PLEASE HELP idk what any of this means. 25 points

kow [346]

Answer:

Step-by-step explanation:

A dilation is something that enlarges or shrinks an existing figure, retaining all angle measures. The two figures will be similar, not congruent.

A dilation of 1/2 (which is less than one) will make a figure smaller. You divide each coordinate point by two

(x, y) → ( $\frac{1}{2}x, \frac{1}{2}y$ )

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3 years ago

Is RS perpendicular to DF? Select Yes or No for each statement ...

miss Akunina [59]

Answer:

depends

Step-by-step explanation:

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2 years ago

In △XYZ , XZ=9 , YZ=4 , and XY=7 .

Mamont248 [21]

Answer:

$A=6\sqrt{5}\ units^2$

Step-by-step explanation:

we know that

Heron's Formula is a method for calculating the area of a triangle when you know the lengths of all three sides.

so

$A=\sqrt{s(s-a)(s-b)(s-c)}$

where

a, b and c are the length sides of triangle

s is the semi-perimeter of triangle

we have

$a=9\ units,b=4\ units,c=7\ units$

Find the semi-perimeter s

$s=\frac{9+4+7}{2}=10\ units$

Find the area of triangle

$A=\sqrt{10(10-9)(10-4)(10-7)}$

$A=\sqrt{10(1)(6)(3)}$

$A=\sqrt{180}\ units^2$

Simplify

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3 years ago

What is the answer to Y=-2x-1/2

ruslelena [56]

Answer:

Is this slope-intercept form?

Step-by-step explanation:

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2 years ago

Simplify.<br> 2 × (3-1) + 3<br> 007<br> 20<br> 7 8 a<br> 0 10<br> 011

IgorLugansk [536]

Answer:

7

Step-by-step explanation:

2 x (2) + 3

= 4 + 3

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3 years ago