2 years ago

Here is a sketch of y=x^2 +bx+c

Mathematics

1 answer:

Norma-Jean [14]2 years ago

7 0

Answer:

Step-by-step explanation:

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What’s the area of the figure

Galina-37 [17]

Answer:

693 m^2

Step-by-step explanation:

A = bh

A = (21)(33)

A = 693

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3 years ago

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The side lengths of the following right triangle 15,20 and 25, as shown below. The altitude from the right angle splits the hypo

kompoz [17]

Answer:

$h = 12$

$x = 9$

$y= 16$

Step-by-step explanation:

Given

The attached triangle

Required

Find h, x and y

Let the base of the triangle be 15.

So, the area is:

$A = \frac{1}{2} * 15 * 20$

$i.e\ height = 20$

$A = \frac{1}{2} * 300$

$A = 150$

Let the base of the triangle be 25.

So, the area is:

$A = \frac{1}{2} * 25 * h$

$i.e\ height = h$

$A = \frac{1}{2} * 25h$

Substitute $A = 150$

$\frac{1}{2}*25h = 150$

Solve for h

$h = \frac{150 *2}{25}$

$h = 6 *2$

$h = 12$

Considering the smallest triangle

$Hypotenuse = 15$

So:

$15^2 = h^2 + x^2$

$15^2 = 12^2 + x^2$

This gives:

$15^2 - 12^2 = x^2$

$81 = x^2$

Take square roots

$9 =x$

$x = 9$

Solving for y

$x + y = 25$

$y= 25 - x$

$y= 25 - 9$

$y= 16$

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2 years ago

True or false two lines with the same y intercept are perpendicular

tensa zangetsu [6.8K]

It is true your welcome.

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3 years ago

EleoNora [17]

Answer:

0.40x = 320

Step-by-step explanation:

40 = percent, 320 = part. Write the percent as a decimal and multiply by the whole.

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2 years ago

Jake is going to call one person from his contacts at random. He has 30 total contacts. 16 of those contacts are people he met a

Archy [21]

Answer: P = 8/15

Explanation:

There are 30 contact in total

And there are 16 contacts are people he met at school

P = 16/30 = 8/15

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3 years ago

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