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Kitty [74]
3 years ago
7

What's 9+10? is it 21 or 19.

Mathematics
2 answers:
Otrada [13]3 years ago
4 0

it's 19 bro ,

have a great day

kolezko [41]3 years ago
3 0
19 because for example, you have 10 cubes and you wanna add 9 more cubes to those 10. You’ll end up with 19
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12,20,28,36 are all multiples of 1, 2 and what?
liberstina [14]

1) one is multiple of all positive integers. So, yes it is multiple of all that numbers.

2) Two is multiple for all those number which has even digit in unit place. So, yes they all are multiple of 2 too.

4 0
4 years ago
Read 2 more answers
A 0. 0427 kg racquetball is moving 22. 3 m/s when it strikes a stationary box. The ball bounces back at 11. 5 m/s, while the box
andreyandreev [35.5K]

To solve the question we must know about the conservation of momentum.

<h2>Conservation of Momentum</h2>

According to the law of conservation of momentum, when two bodies collide with each other then their momentum is conserved if no external force acts on the system. therefore, the combined momentum of the two objects before collision will be equal to the combined momentum of the two objects after the collision.

the momentum of the two objects before the collision

                       = momentum of the two objects after the collision

The mass of the box is 0.30141 kg.

<h2>Explanation</h2>

Given to us

  • Mass of racquetball, m = 0.0427 kg,
  • Velocity of racquetball before Collision,  \bold{u_1} = 22.3 m/s,
  • Velocity of box before Collision,\bold{ u_2}  = 0 m/s,
  • Velocity of racquetball after Collision, \bold{v_1} = 11.5 m/s,
  • Velocity of box after Collision, \bold{v_2} = 1.53 m/s,

<h3>Assumption</h3>

Let the mass of the box be M.

<h3>Conservation Of Momentum</h3>

Momentum before collision = Momentum after collision

mu_1 + Mu_2 = mv_1 + Mv_2

given, the box was stationary before the collision,

mu_1 + Mu_2 = mv_1 + Mv_2\\\\&#10;mu_1 + 0 = mv_1 + Mv_2\\\\&#10;mu_1  - mv_1 = Mv_2\\\\&#10;M= \dfrac{mu_1  - mv_1}{v_2}

Substituting the values,

M= \dfrac{mu_1  - mv_1}{v_2}\\\\&#10;M = \dfrac{(0.0427 \times 22.3)  - (0.0427\times 11.5)}{1.53}\\\\&#10;M = 0.30141\ kg

Hence, the mass of the box is 0.30141 kg.

Learn more about Conservation of Momentum:

brainly.com/question/2141713

3 0
3 years ago
Solve for x<br> (5x+4)(7x+4)(4x+1)(9x-6)(4x+9)<br> a 90<br> b 2<br> c 12<br> d 45
Stels [109]

Answer:

a

Step-by-step explanation:

8 0
2 years ago
I NEED HELP WITH THIS QUESTION ASAPP
Nonamiya [84]

15, 7, 24, 10. If it is 2 tables for every 6 guests, then it is 1 for every three. All you have to do is multiply the table number by 3 to get the number of guests, and you need to divide the guest number by 3 to get the table number.

4 0
3 years ago
Based on the box-and-whisker plot shown below match the terms with the correct values
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The Median is 11, and it is shown by the line on the middle of the rectangle.

The range is 12, and you can find it by subtracting the highest data point (17) by the lowest data point (5).

The 25th percentile is 9, and it could be found by looking at the first line in the rectangle.

The 75th percentile is 14, and it could bee found by looking at the last line in the rectangle.

The inter-quartile range is 5, and it can be found by subtracting the upper quartile, or the 75th percentile (14) by the lower quartile, or the 25th percentile (9). 14-9=5

Hopefully this helps.

3 0
3 years ago
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