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dalvyx [7]
3 years ago
12

Please help asap 28 pts

Mathematics
2 answers:
butalik [34]3 years ago
3 0
I think its A not sure on this one but
can you send me a message so you can help me with pysics and ill help u with this
Otrada [13]3 years ago
3 0

The answer to this question is A

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Which pair of ratios forms a proportion?​
bogdanovich [222]

Answer:

a

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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
The ratio of girls to boys in a lunchroom is 3 to 4. There are 48 boys. How many girls are there?
BabaBlast [244]

Answer:

there are 36 girls

Step-by-step explanation:

ratio is 3 to 4

3 0
3 years ago
When you buy a new car it is a depreciating asset. Which means the moment you purchase your car it begins losing value. If you
Arturiano [62]

I can't see the graph but I'll try anyway

Answer:

x      y

0     $20,000

1      $18,000

2     $16,200

3     $14,580

4     $13,122

5     $11,809.80

4 0
2 years ago
(3a+2.5b)^2=9a^2+6.25b^2+*<br> Please help before Thursday
Anon25 [30]

Step-by-step explanation:

We have (x + y)² = (x + y)(x + y) = x² + 2xy + y².

Let x be 3a and y be 2.5b.

Therefore (3a + 2.5b)²

= (3a)² + 2(3a)(2.5b) + (2.5b)²

= 9a² + 15ab + 6.25b².

Hence the '*' sign should be replaced with 15ab.

5 0
3 years ago
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