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Rasek [7]
3 years ago
9

25 POINTS!!!!

Mathematics
1 answer:
Mandarinka [93]3 years ago
4 0

1 is D

2 is C

3 is B

4 is C

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Divide 9y power 2 by 3<br><br>divide (8x power 2 +4x ) by 2x​
olchik [2.2K]

Answer:

1=27

2=34

Step-by-step explanation:

1)9y power 2÷3

or, y=9 power 2÷3

or, y=9×9÷3

or, y=81÷3

or, y=27

2) (8x power 2+4x)÷2

=(8x×8+4x)÷2

=(64x+4x)÷2

=68x÷2

or, x=68÷2

or, x=34

4 0
3 years ago
The following function represents the value of a car, in dollars, after x years:
Assoli18 [71]

Answer:

Option D.The decrease in the value of the car, which is 8%

Step-by-step explanation:

we have a exponential function of the form

f(x)=a(b)^{x}

where

y is the value of the car

x is the time in years

a is the initial value

b is the base

r is the rate of decrease

b=1+r

In this problem we have

a=$24,000 initial value of the car

b=0.92

so

0.92=1+r

r=0.92-1=-0.08=-8%-----> is negative because is a rate of decrease

8 0
3 years ago
Read 2 more answers
The graph below shows a proportional relationship between x and y. What is the constant of proportionality,
yarga [219]

Answer:

0.5

Step-by-step explanation:

you just need see at one point. i see at point (1, 0.5)

3 0
3 years ago
Find the surface area of a sphere<br> Show all the work
IrinaVladis [17]

Answer:

452cm2

Step-by-step explanation:

surface area of sphere =4πr2

so 4π62 which equals to 452.39.

hope this helps u understand:)

5 0
3 years ago
Tiffany pays 40$ for 160 minutes of talk time on her cell phone.How many minutes of talk time does she get per dollar?
jonny [76]
To find how many minutes of talk time is available per dolla, you have to divide 160 (number of minutes) by 40 (cost) 160/40 = 4 Therefore, it's 4 minutes per dollar
8 0
3 years ago
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