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3 years ago

Help please? Its an exam.

Mathematics

1 answer:

nordsb [41]3 years ago

3 0

Answer:

I think x=9

2(3x)=54

3x=27

x=9

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Which statement best describes the area of Triangle ABC shown below?

Gwar [14]

Answer:

It is one-half the area of a rectangle of length 4 units and width 5 units.

Step-by-step explanation:

7 0

3 years ago

After three weeks, he has gone from 20 free throws to 26. By what percent has he increased his score?

Alika [10]

Answer:

By 30%

Step-by-step explanation

He has improved by 6 free throws. He used to score 20 points from free throws(Im assuming this is basketball) He scores 6 more in three weeks.

6/20 = 30/100=30 percent.

Check:

30% of 20 = 6

6=6

4 0

3 years ago

Add 7/8 + 2 3/24 + 6 1/6

natali 33 [55]

Answer:

9 4/24 or 9 1/6

Find the LCM(lowest common multiple) of 8, 24 and 6.
The LCM of 8, 24 and 6 is 24.
We now want to turn all the denominators into 24 so we are going multiply 7/8 by 3 and 1/6 by 4. We won't need to turn the denominator of 3/24 into 24 because it's already 24
Whatever you do to the denominator you have to do to the numerator, so you also have to multiply the numerator of 7/8 by 3 and the numerator of 1/6 by 4
That now results in 21/8 + 2 3/24 + 6 4/24
Now you have to add all the fractions together which is going to equal to 28/24
Because 28/24 is more than the whole, subtract 28 from 24 which gives us 4. That 4 is now our new numerator
We are now going to all the whole numbers 6+2+1=9. Incase you're wondering, the '1' came from the 28/24
The answer you should get should be 9 4/24 or if it should be simplified it would be 9 1/6

3 0

3 years ago

The area of a rectangle is 21 yd.² and the length of a rectangle is 1 yard or less than twice the width find the dimensions of t

emmasim [6.3K]

Answer:

length = 6 yards

width = 3.5 yards

Step-by-step explanation:

the length of a rectangle is 1 yard less than twice the width

LEt 'w' be the width of the rectangle

and 'l' be the length of the rectangle

length l = 2 times the width -1

so l = 2w -1

Area of the rectangle = length * width

Area = l * w

we know length is 2w-1 and given area = 21

21 = (2w-1) * w

$21= 2w^2 - w$

subtract 21 on both sides

$0= 2w^2 - w - 21$

now solve for 'w'

$0= 2w^2 +6w -7w- 21$

0 = 2w(w+3)-7(w+3)

0= (2w-7)(w+3)

2w-7 = 0 and w+3 =0

w = 7/2 w=-3

width cannot be negative so we ignore w=-3

width w= 3.5

length = 2w-1= 2(3.5) - 1= 7-1=6

length = 6 yards

5 0

4 years ago

Write your answer as a fraction.

insens350 [35]

Answer:3/8

Step-by-step explanation:

5 0

3 years ago