150 volts is what percent of 120 volts

Answers

Answer 1
Answer: 150 = x%  of  120

150 = (x/100) * 120

150/120 = x/100

1.25 = x/100

1.25*100 = x

125 = x

x = 125

Therefore 150 volts is 125 % of 120 volts.  
Answer 2
Answer: % of 120V = (150V/120V) x 100 = 125%

Therefore 150 volts is 125% of 120 volts

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Help with these 2 questions please?? Check my answers. The height of a triangle is 13 in. less than its base. If the area of the triangle is 24 in2, what is the length of the base?

3 in.
10 in.<------
16 in.
21 in.




Madison hits a tennis ball with an initial velocity of 18 m/s straight up into the air. When she hits the ball, it is 1.2 m above the ground. Which equation can be used to find the time, t, it takes for the ball to reach the ground?

–4.9t2 + 18t + 1.2 = 0
–16t2 + 18t + 1.2 = 0<-------
–4.9t2 + 1.2t + 18 = 0
–16t2 + 1.2t + 18 = 0

Answers

1>
Let the base be "x"
According to the question, 

h = x - 13

A = 24 in sq.
Now,
Area of triangle =  (1)/(2)~b~h

24= (1)/(2)(x)(x-13)

24 *2= (x)(x-13)

48=   x^(2) - 13x

0=   x^(2) - 13x -48

Factorizing the equation,  x²  - 13x  -48, we get,

0=   x^(2)+3x - 16x -48

0=   x(x+3) - 16(x+3)

0=  (x + 3)(x-16)

NOW, using zero product property, we get,

Either,
x + 3 = 0 
     x = -3

Or,
x - 16 = 0
      x  = 16

Since, distance can't be negative, we have, x = 16 in.
So, the length of the base is 16 inches.

2>

umm...i don't know how to do it...can you post a picture of the same kind of (solved) question....i mean like an example


Solve for x: 5|2x − 2| + 8 = 18.x = 2, x = −2
x = −2, x = 0
x = 2, x = 0
x = 0, x = 1 over 2

Answers

remember
|x| makes x posotive
5|2x-2|+8=18
minus 8 both sides
5|2x-2|=10
divide both sides by 5
|2x-2|=2
assume
2x-2=2 and 2x-2=-2

2x-2=2
add 2
2x=4
divide 2
x=2

2x-2=-2
add 2
2x=0
x=0


x=0 or x=2


3rd choice

Answer:

C. x = 2, x = 0

Step-by-step explanation:

Which of the following expressions is written in scientific notation?a)73.4*10^5
b)0.09*10^7
c)80*10^3
d)4.22*10^(–3)

what is exactly scientific notation?

Answers

a\cdot10^n\ is\ scientific\ notation\ if\ a\in\left<1;\ 10\right)\n\na)\ 73.4\cdot10^5-NO-(73.4 > 10)\n\nb)\ 0.09\cdot10^7-NO-(0.09<1)\n\nc)\ 80\cdot10^3-NO-(80>10)\n\nd)\ 4.22\cdot10^(-3)-YES

Lesson 2: Scientific Notation quick check

1. D) 4.22x10^-3

2. A) 7.08x10^-8

3. A) 6.1x10^-7

4. D) 1.25x10^-4

5.C) Doubling n results in doubling the value of the expression.

6. B) 2.45x10^5

7.A) 3x10^3

Please use this for double checking your answers!

Traditions Clothing Store is having a sale. Shirts that were regularly priced at $20 are on sale for $17. What is the percentage of decrease in the price of the shirts?

Answers

\begin{array}{ccc}\$20&-&100\%\n\n\$17&-&p\%\end{array}\n\n\ncross\ multiply\n\n20p=17\cdot100\ \ \ /:20\n\np=(1700)/(20)\n\np=85\ (\%)\n\n100\%-85\%=15\%\leftarrow Answer
original price of shirts  = $ 20
new price of shirts =  $17
decrease in price =  $20 - $17  = $ 3
% decrease =        3/20 x 100 =  15%

Divide 36 by the difference of 16 and 4

Answers

The answer is 3. First you solve 16-4 and you get 12. Then you solve 36/12 which equals 3.
You subtract ➡️. first 16-4= 12
Then divide ➡️. 36 divided by 12 is =3 so the answer is 3

If David bought 12 pencils for $3.00. How much did 1 pencil cost?

Answers

Step-by-step explanation:

get the cost of 12 pencil and divide by those 12 pencils to get the cost of 1 pencil

Answer:
$.65

We divide $3.00 by 12 which gets us $.65.

Hope you understand!