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1 year ago

Solve the expression (7th grade math): -0.8m+3-12.5m+95.36m

Mathematics

1 answer:

Lana71 [14]1 year ago

7 0

Step-by-step explanation:

<u>Combine Like-Terms:</u>

-0.8m + 3 - 12.5m + 95.36m

-13.3m + 3 + 95.36m

82.06m + 3

82.06m + 3 is your simplified expression.

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#2. If someone could help me please

alina1380 [7]

The answer is D if you combine like terms

5 0

2 years ago

Five years ago, rhea put $20,000 into savings. Which of the following statement is true for this situation?

raketka [301]

Answer:

Present value of $30,000 is $20,000 Future Value of $30,000 is $20,000 Present value of $20,000 is $30,000

Step-by-step explanation:

6 0

3 years ago

Natalie made a nut mixture that contains

Harman [31]

Answer:

50%

Step-by-step explanation:

10 kg of mixed nuts that contain 60% peanuts

60(10)

plus

15 kg of a different brand of mixed nuts. with x% peanuts

x(15)

That makes 25 kg with 54% peanuts

54(25)

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

Equation

60(10) + x(15) = 54(25)

600 + 15x = 1350

Subtract 600 from both sides

15x = 750

Diviede both sides by 15

x = 50

50%

4 0

2 years ago

Problem #1: Mrs. Grape has 90 students. On her last test, 3/10 of these students earned an A. Of those students, 1/9 got a perfe

fredd [130]

Answer:

3 students got a perfect score.

Step-by-step explanation:

Total number of students in Mrs. Grape's class = 90

Number of students who earned an A = 3/10 of 90

= $\frac{3}{10}\times 90$

= 27 students

Out of 27 students the number of students who got perfect score

= $\frac{1}{9}\times 27$

= 3 students

3 students got a perfect score.

7 0

2 years ago

Can someone help please

yanalaym [24]

Step-by-step explanation:

a) The volume of the prism is

$V = (n^2 - 1)×(n^2 - 1)×(5n)$

$\:\:\:\:= (n^4 - 2n^2 + 1)(5n)$

$\:\:\:\:=5n^5 - 10n^3 + 5n$

b) If the dimensions L of the prism are tripled, the new volume will be

$V' = (3L)^3 = 27L^3 = 27V$

so it will increase by a factor of 27.

7 0

2 years ago