All categories

2 years ago

String A is 18 inches long.

Mathematics

2 answers:

Dmitrij [34]2 years ago

4 0

String B: 33 inches
String C: 9 inches

Sergeeva-Olga [200]2 years ago

3 0

String A is 18 inches long but 15 shorter than B. this means to get be you need to add string A(18) to 15. that would be 33 inches. string C is half the length of A(18) so you divide 18 by 2(half) to get string C. that would 9 inches

You might be interested in

What is the rule of this question

NARA [144]

It adds 13
11 + 13 =24

6 0

3 years ago

Read 2 more answers

Ann made a scale drawing of a theater. The scale she used was 1 inch : 7 feet. The stage is

hjlf

Answer:

4 in

Step-by-step explanation:

<u>Use ratios and solve:</u>

1 in ÷ 7 ft = x in ÷ 28 ft
x = 28/7 in
x = 4 in

4 0

2 years ago

Find XY if X(0, -7) and Y(-3, 2).<br> d =

guapka [62]

9514 1404 393

Answer:

d = 3√10 ≈ 9.487

Step-by-step explanation:

The distance formula is appropriate.

d = √((x2 -x1)^2 +(y2 -y1)^2)

d = √((-3 -0)^2 +(2 -(-7))^2) = √(9 +81) = √90

d = 3√10

7 0

2 years ago

A 2.2 kg ball strikes a wall with a velocity of 7.4 m/s to the left. The ball bounces off with a velocity of 6.2 m/s to the righ

Naya [18.7K]

Answer:

The constant force exerted on the ball by the wall is 119.68 N.

Step-by-step explanation:

Consider the provided information.

It is given that the mass of the ball is m = 2.2 kg

The initial velocity of the ball towards left is 7.4 m/s

So the momentum of the ball when it strikes is = $2.2\times 7.4=16.28$

The final velocity of the ball is -6.2 m/s

So the momentum of the ball when it strikes back is = $2.2\times -6.2=-13.64$

Thus change in moment is: $16.28-(-13.64)=29.92$

The duration of force exerted on the ball t = 0.25 s

Therefore, the constant force exerted on the ball by the wall is:

$\frac{29.92}{0.25}=119.68$

Hence, the constant force exerted on the ball by the wall is 119.68 N.

6 0

3 years ago

A rectangle has a perimeter of 58. The width is 7 less than the length. Find the length

Marianna [84]

Answer:

Length = 18 Width = 11

Step-by-step explanation:

Perimeter = 2(length) + 2(width)

So let's label the unknown length as x. Width would then be (x-7). Then plug it into the perimeter equation.

2(x) + 2(x-7) = 58

Then use PEMDAS which will give us

2x+2x-14 = 58

Combine like terms

4x -14 = 58

Add 14 to both sides

4x = 72

To get x by itself you have to divide both sides by 4.

x = 18

So length is 18 and width is (18-7) which is 11.

6 0

2 years ago