3 years ago

Mandy spent $75 and earned $75 number line model

Mathematics

1 answer:

damaskus [11]3 years ago

6 0

X-75+75= x

Is a model that could be used to anaslay the question

You might be interested in

What is the solution to 2h + 8 > 3h - 6

Romashka [77]

Answer: H<14

Expelnation:2

−

(subtract

from both sides)

(add

to both sides)

7 0

3 years ago

Will mark brainliest, please answer:)

yanalaym [24]

Check the picture below.

7 0

3 years ago

Prove that:<br><br>cos20°cos40°cos80°=1/8

Naya [18.7K]

Answer:

see explanation

Step-by-step explanation:

Using the double angle identity for sine

sin2x = 2sinxcosx

Consider left side

cos20°cos40°cos80°

= $\frac{1}{2sin20}$ (2sin20°cos20°)cos40°cos80°

= $\frac{1}{4sin20}$ (2sin40°cos40°)cos80°

= $\frac{1}{4sin20}$ (sin80°cos80° )

= $\frac{1}{8sin20}$ (2sin80°cos80° )

= $\frac{1}{8sin20}$ . sin160°

= $\frac{1}{8sin20}$ . sin(180 - 20)°

= $\frac{1}{8sin20}$ . sin20°

= $\frac{1}{8}$ = right side , thus proven

7 0

3 years ago

Read 2 more answers

A piecewise function is defined as shown. StartLayout enlarged left-brace 1st Row 1st column negative x , 2nd column x less-than

allsm [11]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

7 cos x+1=6 secx solve for x

jonny [76]

7cos(x) + 1 = 6sec(x)
7cos(x) + 1 = 6/cos(x)
7cos^(x) + cos(x) = 6
7cos^(x) + cos(x) - 6 = 0
[7cos(x) - 6][cos(x) + 1] = 0
cos(x) = 6/7 , x = arccos(6/7) and
cos(x) = -1, x = 180

6 0

3 years ago