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NeX [460]
3 years ago
11

What are the solutions of 2x2 + 3x = −5? (6 points)

Mathematics
2 answers:
sleet_krkn [62]3 years ago
6 0
I got x = -.3 repeating. 2x2 = 4 + 3x=-5 u then -4 from each side  and you get 3x = -1. divide both sides by 3 and you get x= -.3 repeating. 
ozzi3 years ago
4 0
Step one:
2by2 goes first,so we get 4.
4+3x=-5
step two:
we remove 4 to the other side so we leave 3x alone, and when +4 is removed, it becomes negative.
3x=-5-4
so 3x=-9
step three:
-9 is divided by 3 so the answer is -3
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If 20% of X is $6, what is 38% of X?​
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3 years ago
Which of the following is NOT a requirement of testing a claim about a population proportion using a formal method of hypothesis
Pie

Answer:

A. The lowercase​ symbol, p, represents the probability of getting a test statistic at least as extreme as the one representing sample data and is needed to test the claim.

Step-by-step explanation:

The conditions  required for testing  of a claim about a population proportion using a formal method of hypothesis​ testing are:

1) The sample observations are a simple random sample.

2) The conditions for a binomial distribution are satisfied

3) The conditions np5 and nq5 are both satisfied. i.e n: p≥ 5and q≥ 5

These conditions are given in th options b,c and d.

Option A is not a condition for testing  of a claim about a population proportion using a formal method of hypothesis​ testing.

8 0
3 years ago
<img src="https://tex.z-dn.net/?f=20%20%5Cdiv%20%289%20-%205%29%20%2B%201" id="TexFormula1" title="20 \div (9 - 5) + 1" alt="20
sammy [17]
The answer is 6 cause 9-5 is 4 and 20/4 equal 5+1 equal 6
8 0
3 years ago
Simplify 27^2.<br><br> please (thxx)
adoni [48]

Answer:

729

Step-by-step explanation:

Raise 27 to the power of 2.

729

4 0
3 years ago
Y'=<img src="https://tex.z-dn.net/?f=%5Cfrac%7B-2x%2B2y%2B1%7D%7Bx-y%2B1%7D" id="TexFormula1" title="\frac{-2x+2y+1}{x-y+1}" alt
AlladinOne [14]

Answer:

see below

Step-by-step explanation:

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____ =   ______ – ___x^2 – ____y^2 – _____x + ______y

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8 0
3 years ago
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