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OverLord2011 [107]
2 years ago
5

The speed of light in cold air is how many times the speed of sound in cold air?​

Mathematics
1 answer:
Tju [1.3M]2 years ago
5 0

Answer: B I think

Step-by-step explanation: hope it helps

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Chris can type 490 words in 7 min how many works can he type PER min <br> You get 14 points
amm1812
<h2>Answer: 70 words per min</h2><h2 /><h2>Step-by-step explanation: We just divided 490 by 7 to get how many words he can type for 1 min!</h2>

5 0
3 years ago
Simplify each radical
const2013 [10]

Answer:

AECG

Step-by-step explanation:

1

sqrt(49) = 7

sqrt(a^2) = a

sqrt(b^2) = b

For every two variables you can take one out from under the root sign and thorough the other one away.

Answer: E

2

sqrt(36) = 6

sqrt(a^2) = a  See comment for 1.

b must be left where it is. There is only 1 of them.

6asqrt(b)

Answer: A

3. sqrt(25) = 5

sqrt(b^2) = b

a must be left alone.  There's only 1 of them.

5b sqrt(a)

answer: C

4

sqrt(81 a b)

sqrt(81) = 9

The variables must be left alone. There's only1 of them

9 sqrt(ab)

Answer G

8 0
2 years ago
How to use a bar model?
riadik2000 [5.3K]
You make a bar and you take 34 and shade 18. Count the squares not shaded.

Don't take my word on this. I may be wrong.

4 0
3 years ago
What is the roots of the quadratic equation? 6x^2+5x-4=0
Rama09 [41]

x = \frac{1}{2} or x = - \frac{4}{3}

consider the factors of the product 6 × - 4 = - 24 which sum to the coefficient of the x- term ( + 5)

the factors are + 8 and - 3 ( split the middle term using these factors

6x² - 3x + 8x - 4 = 0 ( factor by grouping )

3x(2x - 1) + 4(2x - 1 ) ( take out common factor of (2x - 1) )

= (2x - 1)(3x + 4) = 0

equate each factor to zero and solve for x

2x - 1 = 0 ⇒ x = \frac{1}{2}

3x + 4 = 0 ⇒ x = - \frac{4}{3}


4 0
3 years ago
Read 2 more answers
Hey can you guys help me?Right now I need help on number 2.
Simora [160]

Answer:

slope is -2

Step-by-step explanation:

find the intersection with the x axis and see how far it takes to get to the labeled point

the rise is 2 and then it goes one to the left

2/1 = 2

8 0
3 years ago
Read 2 more answers
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