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3 years ago

Please help me with this it is practice and I'm confused

Mathematics

1 answer:

rodikova [14]3 years ago

7 0

Answer:

Step-by-step explanation:

A function is any line that does not repeat in x-value (doesn't repeat on the x-axis).

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RectangleABCD has vertices at A(– 3, 1),B(– 2, – 1),C(2, 1), andD(1, 3). What is the area, in square units, of this rectangle? A

Anna [14]

Answer:

Option A. $10\ units^{2}$

Step-by-step explanation:

we know that

The area of the rectangle is equal to

A=LW

where

L is the length of rectangle

W is the width of rectangle

we have

$A(-3,1),B(-2,-1),C(2,1),D(1,3)$

Plot the vertices

see the attached figure

L=AD=BC

W=AB=DC

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

<em>Find the distance AD</em>

$A(-3,1),D(1,3)$

substitute in the formula

$AD=\sqrt{(3-1)^{2}+(1+3)^{2}}$

$AD=\sqrt{(2)^{2}+(4)^{2}}$

$AD=\sqrt{20}$

$AD=2\sqrt{5}\ units$

<em>Find the distance AB</em>

$A(-3,1),B(-2,-1)$

substitute in the formula

$AB=\sqrt{(-1-1)^{2}+(-2+3)^{2}}$

$AB=\sqrt{(-2)^{2}+(1)^{2}}$

$AB=\sqrt{5}$

$AB=\sqrt{5}\ units$

Find the area

$A=(2\sqrt{5})*(\sqrt{5})=10\ units^{2}$

4 0

3 years ago

Regina charges c dollars per hour to babysit. If she increases her rate by 15%, which

Inga [223]

Answer:

C. c+0.15c

Step-by-step explanation:

Raising her rate by 15% is equivalent to adding 15% of what she charged before to the original price.

8 0

3 years ago

Read 2 more answers

Find the slope of the line that passes through (2, 12) and (5, 10).

Darina [25.2K]

The right answer is -2/3

please see the attached picture for full solution

Hope it helps..

Good luck on your assignment..

6 0

3 years ago

Read 2 more answers

The table below shows the number of restaurants advertisement in a city directory.

Mnenie [13.5K]

8 + 13 + 14 + 7 = 42

Chinese = 8/42
Simplified = 4/21

7 0

3 years ago

PLEASE HELP OUT!!! im super lost.

Alex73 [517]

Just replace X with the given value.

X = -3

f(-3) = 5 - (-3)

f(-3) = 5 +3

f(-3) = 8

3 0

3 years ago

Please help me with this it is practice and I'm confused ​

Please help me with this it is practice and I'm confused