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3 years ago

Use log to solve for x: 38^2x=109

1 answer:

8 0

38^2x = 109
Apply lg on both sides
lg 38^2x = lg 109
Bring the power down
2x lg 38 = lg 109
2x = lg 109/lg 38
x = (lg 109/lg 38) ÷ 2
= 0.645

Hope it helped!

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Find the missing length to the nearest tenth. 11.2 6.6

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Step-by-step explanation:

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3 years ago

Find the percent of increase from 12 pencils to 18 pencils.

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3 years ago

From previous polls, it is believed that 66% of likely voters prefer the incumbent. A new poll of 500 likely voters will be cond

Vladimir79 [104]

Answer:

The mean and standard deviation of the number preferring the incumbent is mean = 330, standard deviation = 10.59.

Step-by-step explanation:

We are given that From previous polls, it is believed that 66% of likely voters prefer the incumbent.

A new poll of 500 likely voters will be conducted. In the new poll the proportion favoring the incumbent has not changed.

Let p = probability of voters preferring the incumbent = 66%

n = number of voters polled = 500

So, the mean of the number preferring the incumbent is given by;

Mean = $n \times p$ = $500 \times 0.66$

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And, standard deviation of the number preferring the incumbent is given by;

Variance = $n \times p\times (1-p)$

= $500 \times 0.66 \times (1-0.66)$

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7 0

2 years ago

Solve -52 = 4m for m

ZanzabumX [31]

Note the equal sign. What you do to one side, you do to the other.

Isolate the variable. Divide 4 from both sides

(-52)/4 = (4m)/4

m = -52/4

m = -13

-13 is your answer for m

hope this helps

8 0

3 years ago

Read 2 more answers

How many questions did he get correct?

romanna [79]

Answer:

15 questions correct

15/20 = 75%

each 5 questions is 25 percent of the 100% so 3 x 5 = 15 = 75%

Step-by-step explanation:

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2 years ago