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svet-max [94.6K]
3 years ago
14

I NEED SOMEONE TO SOLVE THESE FOR ME. I NEED THE WHOLE PROBLEM SOLVED NOT JUST THE ANSWER.

Mathematics
2 answers:
dimaraw [331]3 years ago
8 0

Answer:

1. x=11/4

Step-by-step explanation:

\frac{3}{5} x -  \frac{3}{4}  =  \frac{9}{10}

u should x 20 then u will get

12x - 15 = 18

12x = 18 + 15

12x = 33

x =  \frac{33}{12}

x =  \frac{11}{4}

BlackZzzverrR [31]3 years ago
4 0

Answer:

Step-by-step explanation:

3/5x-3/4=9/10

3/5x=9/10+3/4 find common denominator

3/5x=33/20  divide by 3/5

x=11/4

6/7+2/5x=-4/5 move 6/7 to other side

2/5x= -4/5-6/7  find common denominator

2/5x= - 58/35  divide by 2/5

x= -29/7

5/8=5/6x-2/3  move -2/3 to other side

5/8+2/3=5/6x  find common denominator

31/24=5/6x  divide by 5/6

x=31/20

17/20-4/5x= -3/10 move 17/20 to other side

-4/5x=-3/10-17/20  find common denominator

-4/5x=-23/20  divide by -4/5

x= 23/16

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Derek is 6.5 feet tall and casts a shadow that is 10 feet long. If a basket ball hoop next to Derek is 10 feet tall, how long is
son4ous [18]

Answer:

14.5 feet tall.

Step-by-step explanation:

the shadow increase by 4.5 per inch in height

3 0
2 years ago
joel is laying pipe for a sprinkler system before he plants his lawn . the lawn is a rectangle, 15 feet long and 8 feet wide. he
Nadya [2.5K]

Answer:

The length of the pipe = 17 feet

Step-by-step explanation:

length = 15 feet

width = 8 feet

Pythagorean theorem,

(diagonal)² = (length)² +(width)²            {all angles of rectangle are 90°}

                   = 15² + 8²

                   = 225 + 64  = 289

diagonal    = √289 = √ 17 * 17

                   = 17 feet

7 0
3 years ago
Show that x+y:x-y=3:2
ycow [4]

We have,

x+y:x-y=3:2

To prove that, x+ y : x - y = 3:2.

x+y=3  

And,

x+y = 2      

Adding (1) and (2), we get

x+y+x-y=3+2

⇒2x=5

⇒ x =

Put x =  in (1), we get

+y=3

⇒ y=3-=

x+y:x-y=

=3:2

So, x+y:x-y=3:2.

8 0
2 years ago
The length of a rectangle is 12 units longer than the width. The perimeter is 7 times the width. Find the length and the width o
katen-ka-za [31]

Log explanation below; answer is at bottom.

If the length, l, is 12 units longer than the width, w, then w = l - 12. If the perimeter, p,

p = 2l +2w,

is 7 x w, then

w = p/7

When two things are set equal to the same variable, they are equal to each other, so,

l - 12 = p/7

Now you need to get rid of the p so you are only working with one variable. To do this you plug in whatever p is equal to for p, so,

l - 12 = (2l + 2w)/7 now to get rid of the w do the same thing we did with p just for w. So,

l - 12 = (2l + 2(l - 12))/7

To solve this you want to multiply both sides by 7 first to get rid of the fraction.

7l - 84 = 2l + 2(l - 12)

Next you want to distribute the 2 over the l and the 12.

7l - 84 = 2l + 2l - 24

Next you want to combine like terms on each side.

7l - 84 = 4l - 24

Next add 84 and subtract 4l from sides to isolate the variable.

3l = 60

Now divide each side by 11 to get your answer.

l = 20.

To find the width,

w = l - 12  

Just plug in and solve.

w = 20 - 12

w = 8

So your length and width are 20 and 8.

l = 20

w = 8

7 0
3 years ago
1. what is the process in which cells obtain energy without using oxygen???
AleksandrR [38]
1. Fermentation. 2. they would die as they wouldn't get energy. 3. short run because frementation occurs only when we r tired and we will be tired as we run it can be either long or short run.


i hope u understand plz inform me
6 0
3 years ago
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