3 years ago

Which angles are complementary?

Mathematics

2 answers:

Katarina [22]3 years ago

7 0

A. 72 and 18 because they equal 90

Wittaler [7]3 years ago

5 0

Your answer is A. <span> 72° and 18°</span>

You might be interested in

Yanka [14]

Answer:

Step-by-step explanation:

7 0

2 years ago

9+4x-5+12x-3x I am sooooo bad at math can I get some help please?!☹

Ghella [55]

13x+4
Combine like terms
If there is a minus sign count it as a negative

5 0

2 years ago

Read 2 more answers

Plzz help me <br><br> Solve -24 = 6x. Show your work.

ZanzabumX [31]

Answer:

x = -4

Step-by-step explanation:

-24 = 6x

________

Switch sides:

6x = -24

________

Divide both sides by 6:

6x/6 = -24/6

________

Simplify:

X = -4

3 0

2 years ago

The heights of women aged 20 to 29 are approximately normal with mean 64 inches and standard deviation 2.7 inches. Men the same

san4es73 [151]

Answer:

Step-by-step explanation:

$Z=\frac{x-mu}{\sigma }$

X - Heights of women aged 20 to 29: X is N(64, 2.7)

Y - Heights of men aged 20 to 29: X is N(69.3, 2.8)

a) X=6'=72"

Z= $\frac{72-64}{2.7} =2.963$

b) Y = 72"

z= $\frac{72-69.3}{2.8} =0.965$

c) 72' women can be taken as very tall but men moderately taller than average

d) Y<5'5" =65"

Z< $\frac{65-69.3}{2.8} =-1.536$

e) X>73"

Z> $\frac{73-64}{2.7} =3.33$

Almost 0% can be taken

f) IQR =Q3-Q1

Z scores =

5 0

3 years ago

xeze [42]

Answer:

Step-by-step explanation:

6 0

2 years ago