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3 years ago

HELPFAST What is the sum of -2/6 and 3/2? 10 points

Mathematics

2 answers:

Svetllana [295]3 years ago

7 0

7/6 i think! hope this helps

Phantasy [73]3 years ago

3 0

Answer:

-2/6+3/2

-2/6+9/6

7/6

I hope this is good enough:

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What is 4y - 9x + 3y - 2x when simplified?

pychu [463]

Answer:

A. -11x + 7y

Step-by-step explanation:

4y - 9x + 3y - 2x

4y + 3y = 7y

-9x - 2x = -11x

-11x + 7y

I hope this helps!

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2 years ago

You have a frame that holds three pictures. You pulled out your favorite five photos. How many sets of three are there? Make a l

soldi70 [24.7K]

Answer:

Step-by-step explanation:

nCr = 5!/(3! × (5 - 3)!)

= 10

123/ 124/ 125/ 134/ 135/ 145/ 234/ 235/ 245/ 345

The formula for combinations is generally n! / (r! (n -- r)!), where n is the total number of possibilities to start and r is the number of selections made. In our example, we have 52 cards; therefore, n = 52.

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4 years ago

Read 2 more answers

PLEASE HELP!!!!WILL GIVE BRAINIEST TO WHOEVER ANSWERS

kirza4 [7]

1. First calculate the positive root of the quadratic using your preferred formula. I got a solution $d = 1/32 (33 + \sqrt{1217})=2.121...$ . That gives you the distance the ball traveled from d=0 (small hill). So the answer is A.

2. The domain is [0,2.121...]. The range is from 0 to the max height. The d for which the ball is the highest is given by the formula x = -b / 2a = -3.3/(-3.2) = 1.031... so the max is 1.902... So the range is [0,1.902...] So the answer is C.

5 0

3 years ago

Jim Smith is a word processor. He is paid $3.50 a page. A normal job has 500 pages and requires about 250 words per page. About

worty [1.4K]

Answer:

The correct answer will most likely be B. 1,750.00

Step-by-step explanation:

I just multiplied 3.50 by 500 to get my answer.

7 0

3 years ago

A farmer wants to build a rectangular pen and then divide it with two interior fences. The total area inside of the pen will be

irina [24]

Answer:

Dimensions of the pen:

x = 11 ft

y = 6 ft

Step-by-step explanation:

Let call "x" and "y" dimensions of the rectangular pen and x > y, so the interior fences will be equal to y.

The exterior length is 2*x + 2*y and its cost is (2*x + 2*y ) *20.40

The interior fences are 2*y and its cost is 2*y* 17

Total cost C = (2*x + 2*y ) *20.40 + 2*y* 17 (1)

Now area inside the pen is 66 ft² and it is equal to:

A = x*y ⇒ 66 = x*y ⇒ y = 66/x

Plugging that value in equation (1) will give C as a function of x

C(x) = [ 2*x + 2* (66/x) ]* 20.40 + 2* (66/x) * 17

C(x) = ( 2*x + 132/x ) 20.40 + 2244/x

C(x) = 40,80*x + 2692.8/x + 2244/x

C(x) = 40.80*x + 4936,8/x

Taking derivatives on both sides of the equation we get

C´(x) = 40.80 - 4936,8/x²

C´(x) = 0 ⇒ 40.80 - 4936,8/x² = 0 ⇒ 40.80 *x² = 4936,8

x² = 4936,8 / 40.80 ⇒ x² = 121 ⇒ x √121

x = 11 ft

And y = 66/x ⇒ y = 66/11 ⇒ y = 6 ft

3 0

4 years ago