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diamong [38]
3 years ago
10

Need help with what I did they all add up to 4 which is what the question asks for but it says that it not right

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
6 0

Answer: Try putting the positive number and then the negative number after the and like the example.

Step-by-step explanation:

Your answers are right, it could be a glitch.

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Here’s a freebie for anyone!
elena-s [515]

Answer:

fankssss

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Respuesta para 8×-2=-9+7×
den301095 [7]
The answer is x=-7
8x-7x-2=-9
8x-7x=-9+2
-7
8 0
3 years ago
A 1400 kg car moving +13.7 m/s makes an elastic collision with a 3200 kg truck, initially at rest. What is the velocity of the c
Kamila [148]

Answer:

The velocity of the car after the collision is -5.36 m/s

Step-by-step explanation:

An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.

let the following:

m₁ = mass of the car = 1400 kg

m₂ = mass of the truck = 3200 kg

u₁ = velocity of the car before collision = 13.7 m/s

u₂ = velocity of the truck before collision = 0 m/s

v₁ = velocity of the car after collision

v₂ = velocity of the truck after collision

v₁ = [ u₁ * (m₁ - m₂) + u₂ * 2m₂ ]/ (m₁ + m₂)

   =  [ 13.7 * (1400 - 3200) + 0 * 2 * 3200 ]/ (1400 + 3200)

   = - 5.36 m/s

So, <u>the velocity of the car after the collision is -5.36 m/s</u>

7 0
3 years ago
Plz help and explain
Rashid [163]

Answer: D

Step-by-step explanation: the answer is d because it can be simplified more

6 0
2 years ago
Read 2 more answers
A bag contains blue yellow red and orange blocks. Tai randomly chose a block from the bag. Recorded the color and then put it ba
katrin [286]

Answer:

A)

Blue: \frac{6}{10} =\frac{3}{5}

Red: \frac{1}{10}

B)

Blue: \frac{16}{40} =\frac{2}{5}

Red: \frac{8}{40} =\frac{1}{5}

C)

No the experimental probabilities found in "A" are not equal to the probabilities found in "B". The sample size of the the experiment was not large enough to reflect the actual probability.

D)

Blue: 80

Yellow: 50

Red: 40

Orange: 30

8 0
2 years ago
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