20% of 150 is what number?

Answers

Answer 1

Answer: To find a number's , let's say "x%" you should multiply that number by, $\frac { x }{ 100 }$ , so we want to find 150 's 20% , so we will multiply , 150 with $\frac { 20 }{ 100 }$ , so :

$150\cdot \frac { 20 }{ 100 } \n \n We\quad can\quad simplify\quad \frac { 20 }{ 100 } \n \n \frac { 20 }{ 100 } =\frac { 2\cdot 10 }{ 10\cdot 10 } =\frac { 10 }{ 10 } \cdot \frac { 2 }{ 10 } =1\cdot \frac { 2 }{ 10 } =\frac { 2 }{ 10 } \n \n 150\cdot \frac { 2 }{ 10 } =\frac { 150\cdot 2 }{ 10 } =\frac { 300 }{ 10 } =30\n \n %20\quad of\quad 150\quad is\quad 30$

Answer 2

Answer: 20/100 * 150 = 30

so the answer is 30

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How to simplify 3 over 18

Answers

$(3)/(18) = (1*3)/(6*3) =\boxed{\bf{(1)/(6)}}$

they can both be divided by 3 so you get 1/6

Solve, using the substitution method 2x+4y=16 x-7=-4y

A. (0,-7)
B. (0,7/4)
C. (9,-1/2)
D. (17,-5/2)

PLEASE HELP ASAP !!

Answers

2x+4y=16
x-7=-4y

4y=16-2x
4y=16-2(-4y+7)
4y=16+8y-14
-4y=2
-4y/-4=2/-4
y=-0,5

2x=16-4(-0,5)
2x=16+2
2x/2=18/2
x=9

C

What is the solution of the system? Use elimination. -12x - y = 6

17x + y = 4

Answers

A) -12x - y = 6

B) 17x + y = 4 Adding both equations:
5x = 10
x = 2
Since x =2
17x + y = 4

17 * 2 + y = 4
y = 4 -34
y = -30

What property is 2+0 = 2

Answers

It is the Identity Property of Addition

The identity property of addition is that the sum of any number and its identity value gives the same number as the result. Also, 0 is the identity element.

Identity property of addition

Write the equation of the line described below in slope-intercept form. m = 6, b = 2