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Jet001 [13]
3 years ago
12

Write the expression below in simplest form. 3x^2 + 8x -1+2(x^2 +5x+3) (work shown please!)

Mathematics
2 answers:
tresset_1 [31]3 years ago
5 0

Answer:

5x² + 18x + 5

Step-by-step explanation:

Given

3x² + 8x - 1 + 2(x² + 5x + 3) ← distribute parenthesis

= 3x² + 8x - 1 + 2x² + 10x + 6 ← collect like terms

= 5x² + 18x + 5

Alinara [238K]3 years ago
4 0

Answer:

5x^2+18x+5

Step-by-step explanation:

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Triangle DEF is an isosceles, so DEF = DFE.
Katarina [22]

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Suppose a researcher is testing the hypothesis Upper H 0​: pequals0.4 versus Upper H 1​: pless than0.4 and she finds the​ P-valu
andre [41]

Answer:

D. If the​ P-value for a particular test statistic is 0.33​, she expects results at least as extreme as the test statistic in exactly 33 of 100 samples if the null hypothesis is true.

D. Since this event is not​ unusual, she will not reject the null hypothesis.

Step-by-step explanation:

Hello!

You have the following hypothesis:

H₀: ρ = 0.4

H₁: ρ < 0.4

Calculated p-value: 0.33

Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).

In this case, you have a 33% chance of getting a value as extreme as the statistic value if the null hypothesis is true. In other words, you would expect results as extreme as the calculated statistic in 33 about 100 samples if the null hypothesis is true.

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If p-value ≤ α, then you reject the null hypothesis.

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Since 0.33 > 0.05 then I'll support the null hypothesis.

I hope it helps!

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