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3 years ago

How Can I alive this complex problem

Mathematics

1 answer:

Nata [24]3 years ago

3 0

Percent decrease is 1-(new/old) so 1-60000/400000 or 1-0.15 or 0.85 or 85%

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Sixty percent of what number is equal to 45 percent of 80?

Dovator [93]

Answer:

Step-by-step explanation:

60% * x = 45% * 80

Changing to decimal form

.60x = .45 *80

.60x =36

Divide each side by .60

.60x/.60 = 36/.60

x =60

6 0

3 years ago

Read 2 more answers

Find the perimeter of the triangle defined by the coordinates (7, 1), (-6, 1), and (10, 6). (Round to nearest tenth)

matrenka [14]

Answer:

$35.6\ units$

Step-by-step explanation:

we know that

The perimeter of triangle is equal to the sum of the length of the three sides

Let

$A(7, 1), B(-6, 1), C(10, 6)$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

Find the distance AB

$A(7, 1), B(-6, 1)$

substitute in the formula

$d=\sqrt{(1-1)^{2}+(-6-7)^{2}}$

$d=\sqrt{(0)^{2}+(-13)^{2}}$

$dAB=13\ units$

Find the distance BC

$B(-6, 1), C(10, 6)$

substitute in the formula

$d=\sqrt{(6-1)^{2}+(10+6)^{2}}$

$d=\sqrt{(5)^{2}+(16)^{2}}$

$dBC=16.8\ units$

Find the distance AC

$A(7, 1), C(10, 6)$

substitute in the formula

$d=\sqrt{(6-1)^{2}+(10-7)^{2}}$

$d=\sqrt{(5)^{2}+(3)^{2}}$

$dAC=5.8\ units$

Find the perimeter

$P=dAB+dBC+dAC$

$P=13+16.8+5.8=35.6\ units$

4 0

3 years ago

What is the<br> range of<br> the quiz<br> grades?

FromTheMoon [43]

Answer:

Step-by-step explanation:

In order to find the range, you have to subtract the smallest number from the largest number. 100 - 75 = 25.

Hope this helped!

4 0

2 years ago

Read 2 more answers

Please help me if you know the answer and can you explain it to me

Slav-nsk [51]

Answer:

Step-by-step explanation:

its the longest side

6 0

3 years ago

the number of right handed students in a mathematics class is nine times the number of left hand students. the total number of s

rewona [7]

Answer:

3 left handed and 27 right handed.

Step-by-step explanation:

9+1=10

30/10=3

3*9=27

30-27=3

7 0

3 years ago