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4 years ago

I need help is anyone is out there and knows how to do this help. HELP ASAP

Mathematics

1 answer:

Anna [14]4 years ago

4 0

Answer:

Sorry i have no idea hahha

Step-by-step explanation:

Good luck

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A class has 28 students the ratio of girls to boys is 4:3 how many girls are in the class

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Answer:

What are the answer choices?

Step-by-step explanation:

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3 years ago

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The pH scale measures how acidic or basic a substance is. Lemon juice is said to have a pH of less than 4 and greater than 1.5.

Vera_Pavlovna [14]

Answer:

1.5<x<4 i hope this is right sorry if its not

Step-by-step explanation:

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3 years ago

Which number line represents the solution set for the inequality {X24?

zhannawk [14.2K]

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A.) will be the correct answer to your problem

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4 years ago

The distribution of the number of hours people spend at work per day is unimodal and symmetric with a mean of 8 hours and a stan

Wewaii [24]

Answer: 95% of all people work between 7 hours and 9 hours per day and It is true.

Step-by-step explanation:

Since we have given that

Mean = 8 hours

Standard deviation = 0.5 hours

According to Empirical Rule,

at 95% confidence, it lies within 2 standard deviations from the mean

so, lower value is given by

$mean-2\times sd\\\\=8-2\times 0.5\\\\\=8-1\\\\=7\ hours$

upper value is given by

$mean+2\times s.d\\\\=8+2\times 0.5\\\\=8+1\\\\=9\ hours$

Hence, 95% of all people work between 7 hours and 9 hours per day.

Therefore , it is true.

4 0

3 years ago

Compare the numbers in the following sequence and try to determine what the next number should be.

miv72 [106K]

If you examine the numbers in the question above very well, you will discover that thy have a distinctive pattern. The pattern is this, you add 3 to the first number and then you multiply the next by 2. Lets go over the numbers now:
6 + 3 = 9
9 * 2 = 18
18 + 3 = 21
21 * 2 = 42
42 + 3 = 45
45 * 2 = 90
90 + 3 = 93
93 * 2 = 186, etc.
Thus, the next number after 45 is 90.

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4 years ago