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Oksanka [162]
2 years ago
6

a test has 40 questions. denise finished 2/5 of the questions in the first 10 minutes and 1/2 of the remaining questions in the

next 15 minutes. how many questions had denise answered after 25 minutes?
Mathematics
1 answer:
timofeeve [1]2 years ago
3 0
That would be 28 questions. Hope I helped!
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The location of the point that is 3/4 the distance from

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Can somebody help plz it’s due soon?
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The answer is 7/18, basically the amount of people in favour over the Amon t of people in total :)
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Ms. Kincaid keeps a supply of dimes and quarters in her car to pay for highway tolls. A week’s supply of toll coins contains 5 m
Alecsey [184]

Answer: (A) 10

<u>Step-by-step explanation:</u>

                <u>Value</u>       <u>Quantity</u>     =  <u>TOTAL Value</u>

dimes:        .10            Q + 5        =    .10(Q = 5)

quarters:    .25               Q           =      .25Q


Dimes + Quarters = $4.00

.10(Q + 5) + .25Q = 4.00

.10Q + .50 + .25Q = 4.00

           .50 + .35Q = 4.00

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Quarters = 10

Dimes = Q + 5

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8 0
3 years ago
Read 2 more answers
An art gallery curator wants to select four paintings
jasenka [17]

255 different groups of 4 paints can be selected out of the 20 paintings.

<h3>How many groups of four paintings can be chosen?</h3>

If we have a set of N elements, the number of groups of different sets of K elements that we can make out of these N is given by:

C(N, K) = N!/(K!*(N - K)!)

In this case we have a total of 20 paintings, and the curator wants to select 4, then we have:

N = 20

K = 4

The number of different combinations of 4 paintings is given by

C(20, 4) = 20!/(4!*16!) = (20*19*18*17)/(4*3*2*1) = 255

This means that 255 different groups of 4 paints can be selected out of the 20 paintings.

If you want to learn more about combinations:

brainly.com/question/11732255

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Mice21 [21]
We can say that total number of guppies would simply be the sum of two polynomials.
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7.3x^2+0.8x+1.3
3 0
2 years ago
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