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soldier1979 [14.2K]
3 years ago
14

Help plssssssssssssssssssss

Mathematics
1 answer:
Whitepunk [10]3 years ago
5 0

Answer: -74

Step-by-step explanation:

First you have to solve - 2y - 9 = 7 to find what "y" equals so we can plug that into 9y - 2

1. Solve -2y - 9 =7:

-2y = 16

y = -8

2. Plug -8 into the expression 9y - 2:

9(-8) - 2

-72 -2

-74!

Im sorry if i didnt do this correctly :/

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Multiply and simplify: (4x)(3x²)
Anettt [7]

Answer:

I think this is the right answer

C=12

P=3

5 0
3 years ago
What is the best approximation for the area of the circle use 3.14 approximate pi<br> HELP PLZ
zysi [14]

Answer:

200.96

Step-by-step explanation:

Multiply the radius squared by pi. The radius is 8 in. so, 8 x 8 = 64. 64 x 3.14 = 200.96

Hope this helps!

4 0
4 years ago
There are 20 families living in the Willbrook Farms Development. Of these families, 10 prepared their own federal income taxes f
ioda

Answer:

a) 1/2

b) 9/40

Step-by-step explanation:

Given

Total number of families living in Willbrook Farms Development = 20

Number of families preparing their own federal income taxes for last year = 10

Number of families for which taxes were prepared by a local professional = 7

Number of families for which taxes were prepared by H&R Block = 3

a) Probability of selecting a family that prepared their own taxes = 10/20 = 1/2

b) The probability of selecting two families, both of which prepared their own taxes

10/20 * 9/20 = 9/40

4 0
3 years ago
Jack wants to buy a pair of trousers for $60 when he went to the store he found that the prices marked down by 20% how much do t
blondinia [14]
To find the discount, multiply 60 by .2, which is 12. Now subtract 12 from 60. The trousers should cost $48 now because the cost has been reduced by 20% of 60, which is $12.
7 0
4 years ago
Read 2 more answers
A population of rabbits oscillates 19 above and below average during the year, hitting the lowest value in january. the average
Helen [10]

Answer:

p(t)=650+\frac{160}{12}t+19sin(\omega t)

Step-by-step explanation:

The initial value of the population is 650

Each year the population increases 160

The population oscillates 19 above and below.

Due to this information you can assume that the function is:

p(t)=650+\frac{160}{12}t+19sin(\omega t)

where for t=0 p(t)=650

where t=12 160/12 (12) = 160

you can assume that the sinusoidal function has a period of one month. Thus, the population oscillates several times in one year with an amplitu of the oscillation of 19. The, w is:

\omega (1)=2\pi\\\\\omega=2\pi

4 0
3 years ago
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