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8_murik_8 [283]
3 years ago
9

5(3a-1)-2(3a-2)=3(a+2)+v

Mathematics
1 answer:
STatiana [176]3 years ago
5 0

Answer:

<u>The answer is option C. 6a-7</u>

Step-by-step explanation:

Given that

5(3a-1)-2(3a-2)=3(a+2)+v

Solve for v

∴ v = 5(3a-1)-2(3a-2) - 3(a+2)

∴ v = 15a - 5 - 6a + 4 - 3a - 6

∴ v = 15a - 6a - 3a - 5 + 4 - 6

∴ v = 6a - 7

<u>So the answer is option C. 6a-7</u>

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PLEASE HELP ASAP
kotykmax [81]

Answer:

A. 9π/2km

Step-by-step explanation:

the length of the arc is

s= angle in radians* radius

the angle in radians

135 = 3π/4

therefore length of arc

s= (3π/4)*6 = 9π/2km

8 0
2 years ago
Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard d
Ostrovityanka [42]

The margin of error of the random selection is 0.29

The given parameters are:

n = 320 --- the sample size

\sigma = 2.9 --- the standard deviation

\bar x = 24 --- the mean

\alpha = 90\% --- the confidence level.

The margin of error (E) is calculated as follows:

E = z \times \sqrt{\frac{\sigma^2}{n}}

So, we have:

E = z \times \sqrt{\frac{3.2^2}{320}}

E = z \times \sqrt{\frac{10.24}{320}}

The z-value for 90% confidence level is 1.645.

Substitute 1.645 for z

E = 1.645 \times \sqrt{\frac{10.24}{320}}

E = 1.645 \times \sqrt{0.032}

Take square roots

E = 1.645 \times 0.1789

Multiply

E = 0.2943

Approximate

E = 0.29

Hence, the margin of error is 0.29

Read more about margin of error at:

brainly.com/question/14396648

5 0
2 years ago
Read 2 more answers
If a person is born every 5 seconds and a person dies every 12 seconds, then how many seconds does it take for the population to
harina [27]

Solution:

As per the problem

A person is born every 5 seconds and a person dies every 12 seconds.

Here the LCD of 5 and 12 is 60.

The number of person born in 60 seconds=\frac{60}{5}=12\\

The Number of person died in 12 seconds=\frac{60}{12}=5

Hence Population increase in 60 seconds is=12-5=7\\

Hence time required to increase the population by one =\frac{60}{7} \ \ seconds\\


5 0
3 years ago
Evaluate f(7) *<br> f (x) = –2x² + 4
Firdavs [7]
Input 7 for every x so
f(7) = -2 (7)^2 +4
f(7) = -2(49) +4
f(7) = -98 +4
f(7) = -94
6 0
3 years ago
Read 2 more answers
Find each product using the FOIL method <br><br> (6d-5)(4d-7)<br><br> Plz help!
Stells [14]
The answer is 24d^2-62d+35
4 0
2 years ago
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