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3 years ago

What is 40% of 85? (with an explanation)

Mathematics

2 answers:

SVEN [57.7K]3 years ago

4 0

Answer:

34 is 40% of 85

Step-by-step explanation:

we just need to muliply

so we move the decimal 2x over to the left and we are left with 0.4

so we must multiply 85 * 0.4 = which is 34

larisa [96]3 years ago

3 0

Answer:

34 (explanation below)

Step-by-step explanation:

Convert percent to decimal by moving the decimal in the number 40 over 2 places to the left and drop the sign.

.40

Now multiply 85 by .40 = 34

You can ALSO do in your head by thinking 10 percent (8.50) and adding it 4 times to find 40 percent. It's a lot faster!

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Red box weighs 50 pounds, blue box weighs 60 pounds, and yellow box weighs 115 pounds. What is the average weight in pounds?

Anit [1.1K]

The answer is 75 because 50+60+115=225 divided by 3 is 75

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3 years ago

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Problem

Sergeu [11.5K]

The lengths of HJ and JK are 50 and 72 respectively.

Given: J is between H and K. the length of HJ=2x+4, JK=3x+3, and HK=22.

The line HJ and JK are collinear then the total length is given as: HJ+JK=HK

substitute values

⇒ (2x+4)+(3x+3)=22

⇒ 5x+7=22

⇒ 5x=22-7

⇒ 5x=15

⇒ x=3

Thus, the length of HJ is (2x+4)=(2*3+4)=10

And the length of JK is (3x+3)=(3*3+3)=12

Learn more about collinear lines here: brainly.com/question/27943430

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2 years ago

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Consider the following pair of equations: −x − y = −5 y = x + 1 If the two equations are graphed, at what point do the lines rep

Mnenie [13.5K]

-x - y = -5
y = x + 1

-x -(x + 1) = -5
-x - x - 1 = -5
-2x = -5 + 1
-2x = -4
x = -4/-2
x = 2

y = x + 1
y = 2 + 1
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solution is : (2,3)

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3 years ago

On a map, 1 centimeter represents a distance of 15 kilometers. How many kilometers are represented by 7 centimeters?

marishachu [46]

Answer:

105

Step-by-step explanation:

15 times 7 =105

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3 years ago

When you are given three side lengths for a triangle, how do you know which length to substitute for a, b, or c in the Pythagore

Romashka [77]

Answer:

When Sum of square of two Sides is equal to square of third side of triangle.

Step-by-step explanation:

Given:

Three side length of triangle are given we need find the which value to substitute for a, b, c in Pythagoras theorem.

First we will find the squares of all length, then we will check which two square of side are equal to square of third side as per Pythagoras theorem.

Hence the two side would according be a and b and third side will become c.

For example if length of triangle is given as 6 cm, 8 cm and 10 cm.

We will first take square of all

$6^2=36\\8^2=64\\10^2=100$

Now we can see that

$36+64=100\\6^2+8^2=10^2$

Now by Pythagoras theorem.

$a^2+b^2=c^2$

Hence we can say a = 6 cm, b = 8 cm, c= 10 cm

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4 years ago