factor the expression: -5m - 15n - 20

Answer:

answer is 29.87127

Step-by-step explanation:

Answer:

65

Step-by-step explanation:

Find the area of all of the parts and add them up

The triangles are equivalent

Triangle area is 5*4/2 or 10

There are 4 triangles so 10*4 is 40

Square area is 5*5 or 25

25+40 is 65

Answer:

65

Step-by-step explanation:

Answer:

.5236

Step-by-step explanation:

Formula for sphere volume:

V = [tex]\frac{4}{3} \pi r^{3}[/tex]

substiture 0.5 for r:

[tex]\frac{4}{3} \pi 0.5^{3}[/tex] = .5236

didnt you say 50 penguins have left the zoo?

Answer:

50 penguins live at the zoo (including emperor penguins)

Step-by-step explanation:

Your right but the way this question is worded is confusing, it could mean that how many Normal Penguins Live at the zoo excluding gets emperor penguin but I think its 50.

Answer: n= 0.2 * 85; 17

Step-by-step explanation: I guess what you're asking is which one of these is accurate. In that case mulitply the percent by the whole to find the part so 85 times 20% is 0.2 as a decimal so 85 times 0.2 = 17. 20% of 85 is 17 :)

Answer:

6 chores

Step-by-step explanation:

ok so,

4 hours=240minutes

2/3of an hour= 60×2/3

=40 minutes

so since one chore needs 40 minutes, then:

40/240= 6

so in 240 minutes/4 hours, Spencer can do 6 chores.

Answer:

1 hundredth

Step-by-step explanation:

1 Hundredth because 3 tenths isn't 1 hundred, and it rounds down. So its 1 hundredth.

Answer:

For math, know the concepts and practice practice practice. Study groups are really helpful for me too

Step-by-step explanation:

Answer:x=26

Step-by-step explanation:

Answer:

I am kinda good at this I think the answer is 26 correct me if I am wrong

Step-by-step

Answer:

A. a=10

b=-8

B. a=10

b=8

Step-by-step explanation:

sorry if Im wrong

Answer:

1.) a = -1/10, b = -8

2.) a =10 , b =0

Step-by-step explanation:

1.) In order for a system of equations to have one solution, the equation must not be parallel or the same equation. Other than that, there are no other restrictions. In order to find what A cannot equal, you must distribute the first equation, 2(5x - 4). B can be equal to anything as long as A is not the same.

2(5x - 4) = (2*5x) + (2*-4) = 10x - 8

10x - 8 = Ax + B

Basically, like I said above, for it to have one solution, A cannot equal 10 or the equation would have no solution or infinite solutions.

For simplistic reasons, I will make A perpendicular to 10x and B will stay the same.

The perpendicular slope of 10 is -1/10, because the reciprocal of 10/1 (just flipping over the number) is 1/10 and the opposite sign of + is -.

So, a possible value for A and B are:

A = -1/10

B = -8

2.) For a system to have no solutions, the equations must be parallel to each other; in order to be parallel, the slopes must be the same and the y-intercepts (b) must NOT be the same.

Since 10x - 8 = Ax + B

A must = 10

B cannot = -8, but can be any other number so let's make B = 0 just because.

So a possible value for A and B are:

A = 10

B = 0

Answer:

5 miles

Step-by-step explanation:

if you do divide 26,400 by 5,280 the answer you would get would be five so for each mile you do it would all equal up to 5,280. Also to check your answer  5,280 times 5 is 26400

Answer:

42

Step-by-step explanation:

a^2 + b^2 = c^2

40^2 + b^2 = 58^2

1600 + b^2 = 3364

subtract 1600 from both sides

b^2 = 1764

square root both sides

b = 42

Answer:

3600 pounds

Step-by-step explanation:

One cubic foot of a chemical weighs 60 pounds.

1 ft³ of chemical = 60 pounds

We need to find how many pounds in the container whose dimension 6 ft, 4 ft and 2.5 ft

l = 6 ft

b = 4 ft

h = 2.5 ft

Volume of box = lbh

                        = 6 x 4 x 2.5

                        = 60 ft³

As we are given

1 ft³ of chemical = 60 pounds

60 ft³ of chemical = 60 x 60 = 3600 pounds

Answer:

3600 pounds

I know you are not on any more hope this helps others!

Answer:

ten ninths

Step-by-step explanation:

Answer:

10/9 or 1 and 1/9

Step-by-step explanation:

1/3 is equivilant to 3/9

3/9 + 7/9 = 10/9

Answer:

on photo

Step-by-step explanation:

Answer:

18÷9=2

Step-by-step explanation:

Answer:

7,945 kilowatt-hours

Step-by-step explanation:

Since the monthly rent is $5,000, first subtract 5,000 from the total cost so that you only have the cost for the electricity bill:

16,520.25 - 5,000 = 11,520.25

Then, since the electricity bill is $1.45 per kilowatt-hour used, divide the new total by 1.45:

11,520.25 ÷ 1.45 = 7,945

Hope this helped!

Answer:

The value in the ones place is 10 times the value in the tens place

Hope this helps

Answer:

10 inches

Step-by-step explanation:

She grew 10 inches in the 3 years years of her life from age 3 to age 6.

Answer:

65/5  simplified is 10 5/6

Please mark as brainlyest if u can xD

Answer:

do brackets or pherenthisies first   then do x devide wich ever comes first then if not + or - wich ever comes first

then do all that you get your awnser my plueshure helping you bye have a good day

Step-by-step explanation:

Answer:

54 (73)80--+(3)yuu

Step-by-step explanation:

45ty777788877788

Answers for 6.4:

9. x = 7

10. w = 9

11. f = 15

12. y = 4

13. g = 42

14. p = 2

Hope this helps

Answer:

11.333333333333 (repeated)

Step-by-step explanation:

1.5 and 10 are like terms, so you need to put them together and keep x on one side by itself. This means that you need to subtract 1.5. The new equation will be .75x = 8.5. Then, you divide by .75. This will then give you the final result, x = 11.3 repeated

Answer:

x=11.33 repeating

Step-by-step explanation:

Answer:

300

Step-by-step explanation:

3x 10 2 power

Answer:

y=-1-6x

Step-by-step explanation:

6x+y=-1

-6x     -6x

----------------

y=-1-6x

y= -6x - 1

is the answer think.

Answer:

b

Step-by-step explanation: