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Reptile [31]
3 years ago
11

HELP ASAP- IF YOU ARE CORRECT I WILL MARK BRAINLY

Mathematics
2 answers:
aivan3 [116]3 years ago
7 0

The correct answer is:

B) <u>-3/2</u>

Vilka [71]3 years ago
5 0

The Answer is:

B) -3/2

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Can be used to compare changes from one period to another.
vlada-n [284]

Answer:

c) Percentages

Step-by-step explanation:

Percentages can be used to compare changes from one period to another.

In calculating a percentage change, either a percentage increase or percentage decrease, we must have both the new and old measurement of the specific quantity.

For example, let's find percentage increase of the number of students that joined a book club using the parameters below;

Original number of students = 32

New number of students = 36

We will calculate the increase using;

Increase = original \; number  -  new \; number

Substituting the values, we have;

Increase = 36 - 32 = 4

Percentage \; increase = \frac{increase}{original \; number} * 100

Percentage \; increase = \frac{4}{32} * 100

Percentage \; increase = 0.125 * 100

Percentage increase = 12.5%

Therefore, the number of students in the school club increased by 12.5%.

8 0
3 years ago
A certain company manufactures skateboards and rollerskates. It takes them 2 units of labor and 1 unit of materials to produce a
Alisiya [41]

Answer: The company should produce 7 skateboards and 16 rollerskates in order to maximize profit.

Step-by-step explanation: Let the skateboards be represented by s and the rollerskates be represented by r. The available amount of labour is 30 units, and to produce a skateboard requires 2 units of labor while to produce a rollerskate requires 1 unit. This can be expressed as follows;

2s + r = 30 ------(1)

Also there are 40 units of materials available, and to produce a skateboard requires 1 unit while a rollerskate requires 2 units. This too can be expressed as follows;

s + 2r = 40 ------(2)

With the pair of simultaneous equations we can now solve for both variables by using the substitution method as follows;

In equation (1), let r = 30 - 2s

Substitute for r into equation (2)

s + 2(30 - 2s) = 40

s + 60 - 4s = 40

Collect like terms,

s - 4s = 40 - 60

-3s = -20

Divide both sides of the equation by -3

s = 6.67

(Rounded up to the nearest whole number, s = 7)

Substitute for the value of s into equation (1)

2s + r = 30

2(7) + r = 30

14 + r = 30

Subtract 14 from both sides of the equation

r = 16

Therefore in order to maximize profit, the company should produce 7 skateboards and 16 rollerskates.

6 0
4 years ago
Solve for x. 5x/7 - 5 = 50
Ratling [72]

Answer:

solution,

5x/7-5=50

5x-35=50

5x=50-35

5x=15

x=15/5

x=3.

3 0
3 years ago
Read 2 more answers
Can someone help me solve this before I quit math
iris [78.8K]

M=9

(I sweAr on my life this is right lol)

4 0
4 years ago
Read 2 more answers
What is 95% of 600 ?
barxatty [35]
95% of 600 is 570. When solving a percentage problem like this, simply convert the percentage into decimal form (.95) and that multiply that by the main number (600). 
8 0
4 years ago
Read 2 more answers
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