Fifteen is six more than a number.

Mathematics

1 answer:

snow_tiger [21]3 years ago

6 0

Answer:

idrk what you're asking here but I tried to solve it. fifteen is six more than a number=9

2/5 of a number is 20= 50(?)

thirty is seven less than twice a number= 74

Step-by-step explanation:

for the first one I subtracted 6 from 15 and got 9.

for the second one I was a little confused but I thought that because 2/5 was 20 than 1/5 would be 10. so I just counted 10,20,30,40,50. then I put 50/5 and simplified it to get 10/1 (further simplified as 10).

for the third one I wrote out the problem:

-7

____

and I did everything back wards.

30+7= 37

37×2=74

I hope this helps, it was a bit confusing

You might be interested in

The length of a certain lot if 20 feet less than four times its width. the area of 4200 sq. ft. what are the dimensions of the l

tia_tia [17]

The area of a surface is the number of square units present in the surface. For a rectangle, it is calculated from the product of the length and the width. To determine the length and width of the lot given above, we first assume that it is in a rectangular shape which is defined by its length and its width. We are given the following:

Area = 4200 square feet
Length = 4x - 20 feet
Width = x feet

From the definition of the area of a rectangle,

Area = length x width
4200 = (4x -20) (x)
4200 = 4x^2 - 20x
4x^2 - 20x - 4200 = 0
4(x^2 - 5x - 1050) = 0
x^2 - 5x -1050 = 0

Factoring the equation would lead to:
(x - 35) (x +30) = 0
x -35 = 0 ; x = 35
x + 30 = 0 ; x = -30

The width should not be a negative value so the width would be equal to 35 feet. So, the length would be

Length = 4(35) - 20 = 120 feet

3 0

3 years ago

What’s the lowest. Omen multiply of 30, 40

Sati [7]

The least common multiple of each is 120

4 0

3 years ago

What is the correct solution for 8x = 56

Mars2501 [29]

Answer:

Step-by-step explanation:

8(7)=56