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3 years ago

The formula for the circumference of a circle is C - 2 xer. Determine the circumference when the radius r is 10 cm.

Mathematics

1 answer:

Kaylis [27]3 years ago

4 0

The correct answer is none other than B. I think

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Question: what is the graph of y= -x+2

Bezzdna [24]

Answer:

[A]

Step-by-step explanation:

3 0

2 years ago

You are assigned 32 math exercises for homework. You complete 87.5% of these before dinner. How many do you have left to do afte

Hunter-Best [27]

You would have 4 left after dinner: (.875)(32)=28 so you have 28 completed before dinner and would have 4 left to do.

7 0

3 years ago

A 25% vinegar solution is combined with triple the amount of a 45% vinegar solution and a 5% vinegar solution resulting in 20 mi

Murrr4er [49]

Complete Question: A 25% vinegar solution is combined with triple the amount of a 45% vinegar solution and a 5% vinegar solution resulting in 20 milliliters of a 30% vinegar solution.

Write an equation that models this situation and explain what each part represents in the situation. Then solve the equation.

Step-by-step explanation:

let the volume of the 45% vinegar solution be x litres ,

the volume of the 25% vinegar solution be 3x

and the volume of the 5% vinegar solution be y

summation of all gives,

x+3x+y = 20

4x + y = 20

subtracting 4x from both sides to make y the subject of the equation, we have;

y = 20 - 4x

To the concentration:

substituting for the value of x and y into equation x + 3x + y = 20, we have,

.45x + .25(3x) + .05(20-4x) = .3(20)

multiplying through by 100 to make whole figures we have;

45x + 25(3x) + 5(20-4x) = 600

45x + 75x + 100 - 20x = 600

120x - 20x + 100 = 600

100x + 100 = 600

subtracting 100 from both sides, we have;

100x = 600 - 100

100x = 500

dividing both sides by 100,

x = 5.

7 0

3 years ago

What is the measure of ∠J?

sineoko [7]

Answer:

6 cm

Step-by-step explanation:

5 0

3 years ago

Eliott was trying to factor 6x^2-18 . He found that the greatest common factor of these terms was 6 and made an area model:

Semenov [28]

x²-3

Step-by-step explanation:

The expression given is;

6x²-18

Finding the greatest common factor of the terms and simplifying the expression will be;

Divide the terms by 6 to get;

x²-3

Graphing the expression to find the area model will be as attached;

Learn More

Factorizing expressions:brainly.com/question/12290978

Keywords : factor, greatest common factor, terms, area model

#LearnwithBrainly

4 0

3 years ago