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Vedmedyk [2.9K]
3 years ago
14

What is 3(a-2)=5a+4 help me pleaseee

Mathematics
1 answer:
BabaBlast [244]3 years ago
5 0
3a - 6=5a +4

then you would subtract 3a on both sides to get

-6=2a+4

then you would subtract 4 on both sides to get

-10=2a

divide 2 into -10 and get

a= -5
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A town has a population of 170000 and grows at 4% every year.what will be the population after 12 years
Aneli [31]

Answer:

\large \boxed{272175}

Step-by-step explanation:

We can use the exponential growth formula:

y = a(1+r)ˣ

where

y = amount after x time

a = initial amount

r = growth rate as a decimal fraction

x = number of years

Data:

a = 170 000

r = 0.04

Calculations:

\begin{array}{rcll}y &= &170 000(1.04)^{12} & & \\& = &170 000 \times 1.601032 &\\& = &\mathbf{272175} &\\\end{array}\\\text{The population will be $\large \boxed{\mathbf{272175}}$ in 12 yr}

The figure below also shows that the population will grow to about 272 000 in 12 yr.

5 0
3 years ago
1. write a rule for the sequence. 3,-3,-9,-15
alexandr402 [8]
The answers are A, C, A
8 0
3 years ago
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What are the solutions to the system of equations?<br><br><br> (_____ , 2) and ( _____ , _____ )
alexandr1967 [171]

Answer:

  (1, 2) and (-1, -2)

Step-by-step explanation:

Since y = 2x, the first blank tells you

  2x = 2

  x = 1

____

Since the variables are squared, a negative solution is as good as a positive solution, so x = -1 and y = -2 will also work.

8 0
3 years ago
Find the total surface area of this triangular prism
Alexxandr [17]

Answer:

96

Step-by-step explanation:

6 times 8 = 48

48 times 4 = 192

192 div 2 = 96

7 0
3 years ago
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In a random sample of fivefive microwave​ ovens, the mean repair cost was ​$75.0075.00 and the standard deviation was ​$13.0013.
Radda [10]
<h2>Answer with explanation:</h2>

As per given , we have

Sample size : n= 5

Degree pf freedom = : df= 5-1=4

\mu=\$75.00

\sigma=\$13.00

Significance level for 90% confidence = \alpha=1-0.90=0.1

Using t-value table , t-critical value for 90% confidence:

t_{\alpha/2, df}=t_{0.05, 4}=2.132.

Margin of error of \mu: E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\(2.132)\dfrac{13}{\sqrt{5}}=12.3949720129\approx12.39

Interpretation : The repair cost will be within $12.39 of the real population mean value \mu 90% of the time.

7 0
3 years ago
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