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babymother [125]
3 years ago
12

Simplify. –20 + (–2) • (–6) =

Mathematics
2 answers:
garik1379 [7]3 years ago
6 0
You would do 2 times 6 and get 12. Then you subtract 12 from -20 and you get -8. so -8 is your answer.
Blababa [14]3 years ago
3 0
For this question you should notice that you have to multiply first and then add the numbers, also when u multiply two negative number your answer will be positive so the answer is: 
-20 + (12) = -8 :)))
I hope this is helpful 
have a nice day 
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During a drought, the water level in a reservoir dropped 3 in. each week for 5 straight weeks. Express the overall change in wat
aliina [53]

Answer:

v = -3w

Step-by-step explanation:

water level/volume = -3 x weeks

v = -3w

6 0
2 years ago
32 people volunteers to donate blood. n dident have he health requirment so they couldent donate the rest of the volunteers dona
Vesna [10]

Answer:

the equation representing total amount of blood donated is 470(32-n)=15040-470n \ ml.

Step-by-step explanation:

Total number of volunteers = 32

number of volunteers couldn't donate blood = n.

So Number of volunteers who donated blood can be calculated by subtracting number of volunteers couldn't donate blood from Total number of volunteers.

Framing in equation form we get;

So, the number of remaining volunteers who donated blood = 32-n.

Each of these volunteers donated blood = 470 ml

Now Total Amount of Blood donated is equal to Amount each of these volunteers donated blood times the number of volunteers who donated blood.

Framing in the equation form we get;

total amount of blood donated  milliliters = 470(32-n)=15040-470n \ ml

Hence the equation representing total amount of blood donated is 470(32-n)=15040-470n \ ml.

4 0
3 years ago
Problem The gift shop at a science museum sells lollipops that are made to look like the planets. Each lollipop is shaped like a
Gre4nikov [31]
The volume is about 7234.56 cubic mm.

I assume the radius is 12 mm, it must have been repeated accidentally.

To find the volume of a sphere, we cube the radius, multiply by pi and finally multiply by 4/3.

We are the steps:

(12^3) = 1728 x pi (3.14)  = 5425.92 x (4/3) = 7234.56
6 0
3 years ago
Read 2 more answers
Plz help me I don't know how to do this!!!!
m_a_m_a [10]

Answer:

x = 25

Step-by-step explanation:

Since it is an equilateral triangle it means that all the sides are 50. Each side is equal so, if you divide 150 by 3 you get 50. (and since perimeter is the adding of each side)

Now you want to try to figure out what the altitude is of the triangle so you divide it in half. Making the bottom side length now 25 because half of 50 is 25. You now have to use Pythagoreans theorem to figure out the altitude:

c^2 - a^2 = b^2

50^2 - 25^2 = b^2

2500 - 625 = b^2

1875 = b^2

√1875 = b

43.30127019

now you put that into the expression: x√3:

x√3 = 43.30127019

x = (43.30127019) ÷ (√3)

x = 25

Hope this helped!

8 0
2 years ago
Jake is choosing between 2 cell phone plans. Plan A costs $15 per month plus $0.08 per minute. Plan B costs $35 per month for un
Alex73 [517]

Answer:

The system of equations is

y=0.08x+16

y=35

Step-by-step explanation:

Let

x ----> the number of minutes of calling time

y ----> the monthly cost of the calling plan

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope

b is the y-intercept

In this problem

Plan A

m=0.08\\b=16

substitute

y=0.08x+16 ----> equation A

Plan B

m=0\\b=35

substitute

y=35 ----> equation B

therefore

The system of equations is

y=0.08x+16

y=35

5 0
3 years ago
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