All categories

3 years ago

If 80 is 80% of a value what is the value

Mathematics

2 answers:

fredd [130]3 years ago

8 0

All percent is out of 100 so divide by 100. 80% is 0.80 in decimal form
80% of a number is 80 so
0.80x=80
x=100

sergeinik [125]3 years ago

5 0

The value is 100 because it is 80% of 100, just like 8 is 80% of 10

You might be interested in

Math help please!!!! i will mark brainliest

finlep [7]

Answer:

Step-by-step explanation:

A. 221 x 5 = 1,105

225 + 245 + 222 +230 = 922

1,105 - 922 = <u>183</u>

B. 225 is the median

C. 229 is Isaac's score for the sixth game

Hope this helps :)

7 0

3 years ago

The cost (c) to hire a dog trainer is varies directly with the amount of time (h) in hours spent training the dog.

NNADVOKAT [17]

Answer:

Part A) The proportional equation is $c=55h$

Part B) 8 hours of training

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

Let

c -----> the cost to hire a dog

h ----> the amount of time in hours

The linear equation is equal to

$c=kh$

Sue spent $660 on 12 hours of obedience training for her dog Muffin

Find the value of k (constant of proportionality)

$k=y/x$

substitute the values

$k=660/12=55$

therefore

The linear equation is

$c=55h$

For $c=\$440$

Find the value of h

substitute in the equation and solve for h

$440=55h$

$h=440/55=8\ hours$

5 0

3 years ago

Is the expression 3x^2-5x^3 a Polynomial? If yes, what is the degree?

Paraphin [41]

Answer: The answer is: it is a fifth degree binomial or 'quintic binomial'.

Step-by-step explanation:

Is the expression 3x^2-5x^3 a polynomial?

So, we have to know what polynomial means. A polynomial is... "an expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables."

So let's take a look at this expression.

Does it consist of variables and coefficients? YES

Does it only involve operations of addition, subtraction, multiplication, and non-negative integer exponents of variables? YES

Therefore, it is a polynomial.

Now, we have to figure out what degree this polynomial is.

The degree of the polynomial is the degree of the monomial with the largest degree.

So the largest degree would be the 3rd degree, because it is, of course, the largest out of the two powers listed.

And also, keep in mind that this is a binomial (made up of two monomials).

Therefore, it is a fifth degree binomial or 'quintic binomial'.

4 0

3 years ago

James says that since -5 is farther from zero on a number line than -4 is, then -5 > -4. Use complete sentences to explain th

nikitadnepr [17]

-4 is less than -5 even though they are both on the same side of the number line. -4 is closer to zero.

7 0

3 years ago

Read 2 more answers

Find the area of a rectangle with L= 2/1/4 and W= 36 inch (A=LW)

ruslelena [56]

Answer:

2 1/4 (36) = 81

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers