5 equals blank divided by 7

Answers

Answer 1
Answer: just multiply 5 by 7 to get 35
Answer 2
Answer: multiply 7*5=35,which is 5=35/7

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Jerry, is an electrician,worked 7 months out of the year.What percent of the year did he work?

Answers

7/12=x/100, 100x7/12 58.33%

How much miles is a light year

Answers


1 light-year = roughly  5,874,601,700,000 miles.  (rounded)

To work it out, take the speed of light, and change units a few times:

          (186,282.397 miles/second)
times
          (86,400 second/day)
times
          (365 day/year)

    =   (186,282.397 x 86,400 x 365)  mile/year .

You can whip that out on your calculator in no time.
 

Write 7 over 10 as a percentage

Answers

70%

A percentage is the same thing as a fraction with a denominator of 100. To make our current denominator change to 100, we must multiply it by 10. So, we must do the same thing to the numerator. 7 times 10 is 70, and 10 times 10 is 100. This means 7/10 equals 70/100, which is 70%.

Simply the expression -3(x+3)2-3+3x. what is the simplified expression in standard form?

Answers

(-3x-9)× 2
-6x-18 -3 +3x
-3x -21

Answer:

TL;DR on behalf of all other answers, B

Step-by-step explanation:

Martina is going to wallpaper her wall in her bedroom.The wall is 11 feet 4 inches wide and 8 feet 3 inches high. A roll of of wallpaper is 21 inches wide and 30 inches long. Whole strips of wallpaper are cut from the roll, then glued vertically onto the wall. How many whole strips of wallpaper can Martina cut from one roll of paper?

Answers

Convert all into inches: 1 ft= 12 inc
= 11ft = 132in. Add 4 in.
132+4 = 136 inches
8 ft = 96 in. Add 3 in.
96 + 3 = 99 inches

Area of the wall is l*w = 99* 136 = 13,464 in^2
Area of one strip = 30*21 = 630 in^2

630 in = 1 strip
13464 in = X
630*X = 13464
X= 13464/630
X= 21.37

They need whole. So, Rounding it will give it 21 strips.

How invented all of the numbers

Answers

0a perwon a long long time ago
Jesus because jesus is the answer to everything