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ycow [4]
3 years ago
14

10) Colleen paid $19.85 per hour for tennis lessons for 3 hours of instruction. If she gave

Mathematics
1 answer:
dmitriy555 [2]3 years ago
8 0

Answer:

40.15$

Step-by-step explanation:

subtract 20 from 60, you get 40. then add the 0.15 back. bam! 40.15$. hope this helped!! ^___^

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What’s 7= y-2/3 if you’re solving for y
Rus_ich [418]

Answer:

y = 23/3

Step-by-step explanation:

Simplify both sides of equation

7 = y + -2/3

Flip equation

y + -2/3 = 7

Add 2/3 to both sides

y + -2/3 + 2/3 = 7 + 2/3

y = 23/3

6 0
2 years ago
What is equivalent to 9^x=27
erma4kov [3.2K]
If you meant to solve for x...

9^x=27 \\
(3^2)^x=3^3\\
3^{2x}=3^3\\
2x=3\\
x=\dfrac{3}{2}
8 0
2 years ago
A new cream was developed to reduce the irritation caused by poison ivy. To test the effectiveness, researchers put an ad online
telo118 [61]

Answer:

Single Blind (option 1)

Step-by-step explanation:

The subjects don't know which cream they have but the technicians do.

If the subject knows which cream they have then they can be influenced by the placebo effect. If they don't know but the technicians do then the technicians will be able to look at unbiased responses from the subjects and tell if it works or not. If the technicians don't know which cream each subject has then they won't be able to learn anything from the responses. The technicians need to know which cream each subject has and the subjects can't know which cream they had.

4 0
2 years ago
Expand and simplify 4(2x+3)+4(3x+2)
REY [17]
8x+12+12x+8
20x+20
The final answer is 20x+20
6 0
2 years ago
Find the sum of nth term of the series 1+3/2+5/2^2+7/2^3+.......
ioda

Answer:

an = (1 + 2·(n - 1))/2^(n - 1) = 2^(1 - n)·(2·n - 1)

sn = 6 - 2·0.5^n·(2·n + 3)


6 0
3 years ago
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