3 years ago

How to find the value of x un the simplest radical form

1 answer:

8 0

An educated guess
In order to find this you need to use the right triangle formula and multiply the two.

Hope this helps!

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What is the area of a triangle with vertices (3,0) (9,0) (7,6)

Nezavi [6.7K]

Answer:

The area of the triangle is of 21 units of area.

Step-by-step explanation:

The area of a triangle with three vertices $(x_1,y_1),(x_2,y_2),(x_3,y_3)$ is given by the determinant of the following matrix:

$A = \pm 0.5 \left|\begin{array}{ccc}x_1&y_1&1\\x_2&y_2&1\\1_3&y_3&1\end{array}\right|$

In this question:

Vertices (3,0) (9,0) (7,6). So

$A = \pm 0.5 \left|\begin{array}{ccc}3&0&1\\9&0&1\\7&7&1\end{array}\right|$

$A = \pm 0.5(3*0*1+0*1*7+1*9*7-0*7*1-0*9*1-3*1*7)$

$A = \pm 0.5*(63-21)$

$A = \pm 0.5*42 = 21$

The area of the triangle is of 21 units of area.

5 0

3 years ago

This year, Carmen watched 70 movies. She thought that 21 of them were very good. Of the movies she watched, what percentage did

spin [16.1K]

Carmen thought 30% of the movies were good.

I found the percent by dividing 21 by 70

21/70= .3

.3= 30%

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3 years ago

What transformation occurs to f(x) in the function f(x)-7

BlackZzzverrR [31]

Answer:

left 7

Step-by-step explanation:

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3 years ago

Which is the better unit price: $1.99 for a 3-ounce bottle or $2.49 for a 4-ounce bottle?

notka56 [123]

Answer:

2.49

Step-by-step explanation:

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3 years ago

Read 2 more answers

Can someone help me with this question please

Ne4ueva [31]

Start with the given equation.

P1V1=P2V2

To solve for P2, move anything else on that side to the other side so that P2 is alone.

P1V1=P2V2
P2=P1V1/V2

8 0

3 years ago