All categories

3 years ago

10th grade Geometry. -5(7w + 8) = 30

Mathematics

1 answer:

borishaifa [10]3 years ago

3 0

the required equation will be:

-5( 7w+ 8)= 30

-35w- 40= 30

-35w= 30+ 40( as 40 is taken to the other side, its symbol changes)

-35w= 70

W= 70/-35

W= -2

You might be interested in

Three times the sum of a number and seven, all divided by four.

statuscvo [17]

Answer:

[3(x+7)]/4

Step-by-step explanation:

[3(x+7)]/4

6 0

3 years ago

What is the value of x to the nearest tenth? gradpoint

Mnenie [13.5K]

Answer:

Step-by-step explanation:

6 0

3 years ago

A scientist enlarged a circular portion of a microscope slide to make it easier to count the number of bacteria present in the s

Tema [17]

Answer:

Option B. $212.1\ cm^{2}$

Step-by-step explanation:

step 1

Find the central angle of the shaded sector

Remember that the diameter divide the circle into two equal parts ( 180 degrees each part)

Let

x -----> the measure of the central angle of the shaded sector

∠x+72°=180°

∠x=180°-72°=108°

step 2

Find the area of the circle

The area of the circle is

$A=\pi r^{2}$

we have

$r=15\ cm$

assume

$\pi=3.1416$

substitute

$A=(3.1416)(15)^{2}$

$A=706.86\ cm^{2}$

step 3

Find the area of the shaded sector

Remember that the area of the complete circle subtends a central angle of 360 degrees

by proportion find the area of a sector by a central angle of 108 degrees

$\frac{706.86}{360}=\frac{x}{108}\\ \\x=706.86*108/360\\ \\x=212.1\ cm^{2}$

8 0

3 years ago

Gerald takes his family out to dinner. Garrett orders a pepperoni and mushroom pizza and a 16 oz drink. Gerald and his wife, Mag

serious [3.7K]

Well, without any prices, I can’t give you a number. And someone else may have a simpler way to do this.

But we’ll call the original bill x.

After the 10% off coupon, the bill is 0.9x
Adding tax = 0.07(0.9x) + 0.9x
Adding a tip = 0.20[0.07(0.9x) + 0.9x)]

If you have numbers to plug in, put them in a comment below & I’ll help more.

4 0

2 years ago

50 points<br> Find the value of t ift-7= 12.

shutvik [7]

Answer

t=19

Step-by-step explanation:

12+7= 19

19 -7 =12

U 2 can help me by marking as brainliest........

8 0

2 years ago

Read 2 more answers