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3 years ago

If 12 cookies cost $3, how much would I pay for 5 cookies? Set up a proportion and solve.

Mathematics

2 answers:

vitfil [10]3 years ago

3 0

Answer:

B) 1.25

Step-by-step explanation:

$3/12 cookies = $.25/cookie

.25 * 5 = 1.25

weqwewe [10]3 years ago

3 0

The answer is b. And the working is In the pic below...

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An amusement park charges $3.50 for admission and $0.75 for each ride. Suppose you have $18. What is the maximum number of rides

fiasKO [112]

Answer:

19 rides

Step-by-step explanation:

First, you have to subtract the admission cost from the total amount you possess.

$18.00

- 3.50

------------

$14.50

Next, you must divide the amount left over ($14.50) by $0.75.

$14.50 ÷ $0.75

≈ 19.33..(repeating)

Since you can't go on 1/3 of a ride, the total number of rides you may go on is 19.

5 0

3 years ago

Nico practiced the drums for 1.5 fewer hours than he practiced the piano. If nico practiced for 4 hours, how many hours did he p

dedylja [7]

Answer: I think it might be 3.5 hours

Step-by-step explanation: 4 - 1.5 = 3.5

I'm not 100% sure but hope this helps!

6 0

3 years ago

Please help from 3 -5

Arada [10]

3. Regular
4. Regular
5. Not regular

5 0

3 years ago

Hun, Please help me

slamgirl [31]

Check the picture below.

6 0

3 years ago

4<br>-5a+b=8<br>7a +9b = -32<br>I need to use substitution for this one. Help?

Sauron [17]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}-5a+b=8&\text{add}\ 5a\ \text{to both sides}\\7a+9b=-32\end{array}\right\\\\\left\{\begin{array}{ccc}b=5a+8&(1)\\7a+9b=-32&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\7a+9(5a+8)=-32\qquad\text{use the distributive property}\\\\7a+(9)(5a)+(9)(8)=-32\\\\7a+45a+72=-32\qquad\text{subtract 72 from both sides}\\\\52a=-104\qquad\text{divide both sides by 52}\\\\\boxed{a=-2}\\\\\text{Put the value of}\ a\ \text{to (1):}\\\\b=5(-2)+8\\\\b=-10+8\\\\\boxed{b=-2}$

8 0

3 years ago