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larisa86 [58]
3 years ago
11

Please help ASAP! Will give brainlist

Mathematics
1 answer:
lana [24]3 years ago
4 0

Answer:      A. 2x-3

Work:

2(2)-3= 1     y=1 True

2(3)-3=6-3=3  y=3 True

2(5)-3=10-3=7  y=7 True

2(7)-3= 14-3= 11   y=11 True

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Reduce to simplest form. - 3/5 + 1/3
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Answer: -4/15

Step-by-step explanation: To add these two fractions together,

we start by finding their <em>Least Common Denominator</em> (LCD).

Since our denominators of 5 and 3 have no factors in common,

our least common denominator is 5 · 3 or 15.

In order to get a denominator of 15 in each fraction,

we multiply top and bottom of the first fraction by 3

and top and bottom of the second fraction by 5.

That gives us -9/15 + 5/15 which simplifies to -4/15.

As your last step, make sure that the fraction

that you end up with doesn't reduce.

In this case, -4/15 does not reduce but watch out for this last step.

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3 years ago
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Step-by-step explanation:

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3 years ago
There are 180 days in school year and you get 3 assignments per day. How many total assignments do you get in 1 school year
m_a_m_a [10]

Answer:

260 assignments in a school year

Step by Step:

There are 180 days in a school year and you do 3 assignments per day you multiple 180 and 3

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3 years ago
Child Health and Development Studies (CHDS) has been collecting data about expectant mothers in Oakland, CA since 1959. One of t
liraira [26]

Answer:

<em>A.) There is a 3.4% chance that a random sample of 50 expectant mothers will have a mean age of 26.5 years old or greater if the mean age for a first time mother is 26 years old.</em>

Step-by-step explanation:

The mean age for a first time mother is assumed 26 years old (null hypothesis) and <em>p-value</em> of the sample mean (26.5 years ) is found as 0.034.

This is the probability of having first time mother mean age 26.5 or greater <em>under the assumption of null hypothesis. </em>

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3 years ago
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