3 years ago

Given f(x) = 2x + 5, find x when f(x) = 45

Mathematics

2 answers:

lozanna [386]3 years ago

7 0

Step-by-step explanation:

f(x) = 2x + 5 = 45

2x + 5 = 45

2x = 45 - 5

2x = 40

x = 20

mars1129 [50]3 years ago

7 0

Answer:

f(x) = 2x + 5 = 45

2x + 5 = 45

5-25=2x

40=2x

x = 20

You might be interested in

These kittens get 1 can of cat food a day. If each can holds 6 ounces of food, how many ounces of food do they eat in one week?

Paladinen [302]

If 6=1 then 6x7= 42 so 42 oz of food per week

5 0

3 years ago

HELP AND GIVE ME DA CORRECT ANSWER OR I REPORT YOU!!!

Fiesta28 [93]

Answer this is 264 Celsius -200 over 90°C -0.36°C five over8°C read and expression I hope this helps

7 0

2 years ago

A principal of $4200 is invested at 9% Interest, compounded annually. How much will the investment worth after 6 years? Use the

Harman [31]

Answer:7043.82

It would be 4200 x 1.09 which is the interest to the power of 6 for the number of years which would then give you 4200 x 1.09^6. This will then give the answer of 7043.82

3 0

3 years ago

Which fraction does point A show?<br> A.3/7<br> B.3/4<br> C.8/5<br> D.7/4

IgorLugansk [536]

Answer:

d 7/4

Step-by-step explanation:

6 0

3 years ago

The mean number of hours of part-time work per week for a sample of 526526 college students is 2828. If the margin of error for

sveta [45]

Answer:

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

Step-by-step explanation:

A confidence interval has the following format.

$\mu_{x} \pm M$

In which $\mu_{x}$ is the mean of the sample and M is the margin of error.

In this problem, we have that:

$\mu_{x} = 28, M = 2.2$

$\mu_{x} - M = 28 - 2.2 = 25.8$

$\mu_{x} + M = 28 + 2.2 = 30.2$

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

4 0

3 years ago