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3 years ago

13

The velocity v of an object rolled down an inclined plane is given by the formula v=39d where d is the distance the object has r

olled solve the formula for d

1 answer:

Nadya [2.5K]3 years ago

4 0

V = 39d

Make d the subject

d = v/39

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Select the equation that represents the problem. Mr. Paterson bought 104 crayons for his class. the crayons came in packs of 8.

MakcuM [25]

Answer:

D

Step-by-step explanation:

4 0

3 years ago

Simplify the expression. 10C7<br><br> A. 1<br><br> B. 3,628,800<br><br> C. 604,800<br><br> D. 120

Sophie [7]

Answer:

Combination

Step-by-step explanation:

Here by 10C7 we actually mean, $C_{7}^{10}$

And the formula for evaluating mCn is

$=\frac{m!}{n!*(m-n)!}$

Therefore

10C7 =

$=\frac{10!}{7!*(10-7)!} \\=\frac{10!}{7!*3!} \\$

Where m! is called m factorial and can be evaluated as

m!= m*(m-1)*(m-2)*(m-3)*.......3*2*1

Hence

10!= 10*9*8......*3*2*1

7!= 7*8*6.....3*2*1

3!=3*2*1

With these we can evaluate

10C7

$=\frac{10*9*8*7*.....3*2*1}{(3*2*1)*(7*6*5....3*2*1)}\\=\frac{10*9*8}{3*2*1} \\=\frac{10*3*4}{1} \\=120$

Hence the answer is D

4 0

3 years ago

26. Aluminum bronze consists of copper and aluminum, usually in the ratio of 10:1 by weight. If a machine made of this alloy wei

skelet666 [1.2K]

Answer:

(D). 6.

Step-by-step explanation:

The number of parts = 1 + 10 = 11.

So 10/11 of the alloy is copper and 1/11 is aluminium.

So the answer is 1/11 * 66

= 66/11= 6 pound,s

6 0

2 years ago

Vedmedyk [2.9K]

You would add.
So the equation would be 1 3/4+1/4 which equals 2.
I hope this helped!:)

3 0

3 years ago

Read 2 more answers

Tim is remodeling his square kitchen but has forgotten the dimensions. He knows he had bought 81 square feet of tiles earlier, a

sammy [17]

Answer:

C) 36 feet

Explanation:

P(square)= 4s

s= square root of the area

$4 \times \sqrt{a} \\ a = 81 \\ 4 \times \sqrt{81} \\ 4 \times 9 \\ = 36$

4 0

3 years ago