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3 years ago

What is the area of this figure? Need it now!!

Mathematics

2 answers:

saw5 [17]3 years ago

7 0

Answer:

The area is 452cm

Step-by-step explanation:

For the big square we have to multiply 15*18 and that is the area so-

15*18=270

Next we multiply 13 and 14

13*14=182

And now we add 270 and 182 to get the total area

270+182=452

e-lub [12.9K]3 years ago

7 0

The area is 452c, because you have to multiply to get the answer.

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3 years ago

Given C(x, 16), D(2,-4), E(-6, 14), and F(-2, 4), find the value of x so that CD || EF.

Andrew [12]

Answer:

x=-6

Step-by-step explanation:

we know that

If two lines are parallel, then their slopes are the same

In this problem

slope CD=slope EF

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

step 1

Find the slope EF

we have

E(-6,14) and F(-2,4)

substitute the values in the formula

$m_E_F=\frac{4-14}{-2+6}\\m_E_F=\frac{-10}{4}\\m_E_F=-2.5$

step 2

Find the slope CD

we have

C(x, 16) and D(2, -4)

substitute the values in the formula

$m_C_D=\frac{-4-16}{2-x}\\m_C_D=\frac{-20}{2-x}$

Remember that

$m_C_D=m_E_F$

$\frac{-20}{2-x}=-2.5$

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3 years ago