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damaskus [11]
3 years ago
12

Write a real world problem for the following equation: 80-3x=53

Mathematics
1 answer:
Afina-wow [57]3 years ago
4 0

Answer:

x=9

Step-by-step explanation:

Step 1: Simplify by both sides of the equation.

80-3x=53

80+-3x=53

-3x+80=53

Step 2: Subtract 80 from both sides.

-3x+80-80=53-80

-3x=-27

Step 3: Divide by both sides by 3.

-3x/-3 = -27/-3

x=9

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Solve for x: |4x + 12| = 16
frosja888 [35]
<span>|4x + 12| = 16
As it is in modulus function, it could be either +ve or -ve
4x+12 = 16   OR   4x - 12 = 16
4x = 16-12    OR   4x = 16 + 12
4x = 4           OR   4x = 28
x = 4/4     OR  x = 28/4
x = 1  OR   x = 7

In short, Your Answer would be either 1 or 7

Hope this helps!</span>
3 0
3 years ago
Read 2 more answers
Solve log_8 12 = x – 2 . Round your answer to four decimal places.
Aleksandr-060686 [28]

Step-by-step answer:

Let's attack the left side:

log_8 12 = log (base 8) 12 = log(12)/log(8) = 1.1949875 (approx.)

Next solve

log_8 12 = x-2

log(12)/log(8) = x-2

x = 2 + log(12)/log(8)

= 3.195 (to one thousandth)

3 0
3 years ago
Read 2 more answers
A sample has a sample proportion of 0.3. which sample size will produce the
jasenka [17]

The sample size of 36 will produce the widest 95% confidence interval when estimating the population parameter option (b) is correct.

<h3>What are population and sample?</h3>

It is described as a collection of data with the same entity that is linked to a problem. The sample is a subset of the population, yet it is still a part of it.

We have:

A sample has a sample proportion of 0.3.

Level of confidence = 95%

At the same confidence level, the larger the sample size, the narrower the confidence interval.

As we have a 95% confidence interval the sample size should be lower.

The sample size from the option = 36 (lower value)

Thus, the sample size of 36 will produce the widest 95% confidence interval when estimating the population parameter option (b) is correct.

Learn more about the population and sample here:

brainly.com/question/9295991

#SPJ1

7 0
1 year ago
The sum of Eric’s and Bob’s weights is 9 times the difference of their weights. The positive difference of their weights is also
Pie

Answer:

<u>150</u>

Step-by-step explanation:

So I will shorten Eric, and Bob's names as E, and B.

So the equations are this

B-E = B+E - 240, E as Eric, and B as Bob, and this E+B=9(E-B)

Move the variables and you get

-2E =- 240

Just divide them both by -2

and E=120

So when we know the value of E we can just plug it into the 1st question

120+B=9B+1080

Moves the Variables and numbers to the other side

8B=1200

1200/8= 150

B=150

There is Bob's weight

6 0
2 years ago
Which ratio represents the probability of taking a red apple from a bag containing 8 red apples, 4 yellow apples, and 3 green ap
snow_lady [41]

Answer:

8:15

or 8/15

Step-by-step explanation:

8 out of 15

6 0
3 years ago
Read 2 more answers
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