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noname [10]
2 years ago
15

Can someone help me solve this?​

Mathematics
1 answer:
atroni [7]2 years ago
6 0

Answer:

5

Step-by-step explanation:

speed=d÷t.

s=1/4=1/20

cross multiply your equation

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It takes a printer 2 1/2 min to print 24 black-and-white pages and 4 color pages. It takes the same printer 3 1/4 min to print 3
Paul [167]
Multiply the first equation by 1.5, to get:
(1.5)(24b + 4c) = 1.5(2.5)
36b + 6c = 3.75
Subtract the second equation from this:
6b = 1/2
b = 1/12
Substituting into the first equation:
24b + 4c = 2.5
24*(1/12) + 4c = 2.5
2 + 4c = 2.5
4c = 0.5
c = 1/8
Therefore, it takes 1/12 minute to print a black-and-white page, and 1/8 minute to print a colored page.
4 0
3 years ago
Read 2 more answers
I can add fractions with unlike denominators. 2/5 + 3/10 =​
slava [35]

Answer:

7/10

Step-by-step explanation:

2/5 multiply the denominator by 2 which will make it 10. Then multiply the numerator by 2 which will make it 4. So it will be 4/10. Then add 4/10 to 3/0 which makes 7/10.

6 0
3 years ago
Read 2 more answers
Find f(-10).
marysya [2.9K]

Answer: -75

Explanation: In this problem, we're given the function f(x) = 7x - 5 and we're asked to find f(-10).

To find f(-10) or the value of the function when <em>x = -10</em> we simply substitute -10 in for <em>x</em> in our function.

So we have 7(-10) - 5 or -70 - 5 which equals -75.

So f(-10) or the value of the function when <em>x</em> <em>= 10</em> is -75.

Since your answer to this problem was <em>a</em>, your answer is correct.

8 0
3 years ago
Next Ron has to add 2.1 grams of medication to 3.4 grams of another medication. What is the total amount of medication he needs
Brums [2.3K]

Answer:

He needs to take 5.5 grams of medications.

Step-by-step explanation:

I added 2.1 to 3.4 and got 5.5. *booyah*

4 0
3 years ago
Please help me with this!
MrRissso [65]
Should be letter C to question
4 0
3 years ago
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