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IceJOKER [234]
3 years ago
5

(2 different questions)

Mathematics
2 answers:
kompoz [17]3 years ago
8 0
1. m+n
2. n years old
Goryan [66]3 years ago
4 0

Answer:

ITS N

Step-by-step explanation:

TRUST ME

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A 120 Lb person would weigh 20 Lb on the earth's moon. A 150 Lb person would weigh 28 Lb on a moon of jupiter.
ollegr [7]

Answer:

a

Step-by-step explanation:

a

7 0
3 years ago
There are 3 times as many males as females on the maths course at university. What fraction of the course are female?
inysia [295]

Answer:

1/4

Step-by-step explanation:

Males: 3 units

Females: 1 unit

Total: 4 units

Females/Total: 1/4

5 0
3 years ago
Simplify (5x-7) (2x+3) (7x-8)
Natali5045456 [20]

Answer:

70x³ - 73x² - 155x + 168

Step-by-step explanation:

Given

(5x - 7)(2x + 3)(7x - 8) ← expand the first pair of factors using FOIL

= (10x² + x - 21)(7x - 8)

Each term in the second factor is multiplied by each term in the first factor, that is

10x² (7x - 8) + x(7x - 8) - 21(7x - 8) ← distribute the 3 parenthesis

= 70x³ - 80x² + 7x² - 8x - 147x + 168 ← collect like terms

= 70x³ - 73x² - 155x + 168

3 0
3 years ago
A rectangle is 3 times as long as it is wide, and its perimeter is 80 centimeters. Find its dimensions
Free_Kalibri [48]

Say the width is W and the length is L

L=3W (and of course W=W)

Now you use the perimeter formula P=2L+2W

80=2(3W) + 2W)

80=6W+2W

80=8W Divide both sides by 8

W=10

Now that you know the width, substitute it back into L=3W to find the length

L=3(10)

L=30

The dimensions are length: 30 cm and width: 10 cm

8 0
3 years ago
What is the surface area of a sphere with radius 2
Gelneren [198K]

Answer:

A

Step-by-step explanation:

The surface area (A) of a sphere is calculated as

A = 4πr² ← r is the radius

here r = 2, hence

A = 4π × 2² = 4π × 4 = 16π units² → A

3 0
3 years ago
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