3 years ago

I don’t understand help

Mathematics

1 answer:

Yuliya22 [10]3 years ago

4 0

Answer:

a)-4x+7=9×3

-4x=27-7

x=-20/4

x=-5

b)49r-55r=-52+10

-6r=-42

r=-42/6

r=7

c)-6m+8m-2m=-1-5+6

2m-2m=0

0=0

You might be interested in

How does the volume of a sphere compare to that of the volume of a cylinder? What would you say the scale factor for Vol sphere:

borishaifa [10]

Answer:

The volume of a sphere is 2/3 times the volume of a similar cylinder

Scale factor : 2/3

Step-by-step explanation:

Let us consider a sphere of radius r. The volume of the sphere will be given as

$V_{s}=\frac{4}{3} \pi r^{3}$

Similarly, let us consider a cylinder with its height being twice the radius of the sphere. We will have its volume given as:

$V_{c}=\pi r^{2}h$

but h = 2r

Hence we have

$V_{c}= 2\pi r^{3}h$

We can divide the two volumes to get a constant that links them together

$\frac{V_{s}}{V_{c}}=\frac{\frac{4}{3} \pi r^{3}}{2\pi r^{3}h}$

this will give us 2/3

Hence the scale factor for Vol sphere: Vol cylinder is 2/3

3 0

4 years ago

All numbers between 1 and 2 are rational numbers true or false

Novosadov [1.4K]

Given that

1:2

now,

1*2

6 0

3 years ago

Marla draws a diagonal in a rhombus to form two triangles. What term can she use to classify each triangle?

Scilla [17]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Please solve asap thanks

zubka84 [21]

How do i solve it omg

6 0

3 years ago

Read 2 more answers

128 ounces is how many pounds

LiRa [457]

Answer:

An ounce is a unit of weight equal to 1/16th of a pound or about 28.35 grams.

A pound is a unit of weight commonly used in the United States and the British commonwealths. A pound is defined as exactly 0.45359237 kilograms.

Step-by-step explanation:

128 Ounces =

8 Pounds

6 0

4 years ago

Read 2 more answers