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1 year ago

10

I need to solve for the indicated pieces of the right triangle and round sides and angles to the nearest tenth also find What x

= and m

1 answer:

Troyanec [42]1 year ago

3 0

Check the picture below.

Make sure your calculator is in Degree mode.

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Find the area of the triangle when the coordinates are (2.5,4.5),(2,0),(9,2)

HACTEHA [7]

The area of the triangle is 14.625.... in order to find the area of a triangle just use this formula b×h÷2

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3 years ago

Select the correct choice below and fill in the answer box(es) to complete your choice.

Tomtit [17]

Answer:

A.18.9285714286

B.18 remainder 39

Step-by-step explanation:

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3 years ago

What is the sum of 20x^2-10x-30

ivann1987 [24]

Answer:

The sum of the roots is 0.5

Step-by-step explanation:

<u><em>The correct question is</em></u>

What is the sum of the roots of 20x^2-10x-30

we know that

In a quadratic equation of the form

$ax^{2} +bx+c=0$

The sum of the roots is equal to

$-\frac{b} {a}$

in this problem we have

$20x^{2} -10x-30=0$

so

$a=20\\b=-10\\c=-30$

substitute

$-\frac{(-10)} {20}=0.5$

<u><em>Verify</em></u>

Find the roots of the quadratic equation

The formula to solve a quadratic equation is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

$a=20\\b=-10\\c=-30$

substitute

$x=\frac{-(-10)\pm\sqrt{-10^{2}-4(20)(-30)}} {2(20)}$

$x=\frac{10\pm\sqrt{2,500}} {40}$

$x=\frac{10\pm50} {40}$

$x=\frac{10+50} {40}=1.5$

$x=\frac{10-50} {40}=-1$

The roots are x=-1 and x=1.5

The sum of the roots are

$-1+1.5=0.5$ ----> is ok

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3 years ago

The domain of a function is? When it includes all real numbers

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3 years ago

There were 35 children and 10 adults in a picnic. What is the ratio of children to the total number of people in the picnic?

Dovator [93]

Ans: 35:45 which is simplified to 7:9

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1 year ago

Read 2 more answers