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nydimaria [60]
3 years ago
9

(8–9a)a=−40+(6–3a)(6+3a)

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
8 0

Answer:

a=-0.5

Step-by-step explanation:

Distributive property for left side, difference of squares for right side.

8a-9a^2=-40+36-9a^2

-9a^2 cancels out

8a=-4

a=-0.5

hjlf3 years ago
5 0

Answer: a= -\frac{1}{2} or in decimal form a = - 0.5

* Hopefully this helps:) Mark me the brainliest:)!! I Didn't provide work since you said work is not require.

∞ 234483279c20∞

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Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
Sveta_85 [38]

Answer:

y = 4(x + 2)^2 - 20.

or in standard form it is

y = 4x^2+ 16x - 4.

Step-by-step explanation:

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2 years ago
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Step-by-step explanation:

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olya-2409 [2.1K]
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3 years ago
An advertisement for a popular weight-loss clinic suggests that participants in its new diet program lose, on average, more than
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The test statistic for the hypothesis would be 1.413.

Given that the participants in its new diet program lose, on average, more than 13 pounds and the mean weight loss of these participants as 13.8 pounds with a standard deviation of 3.1 pounds.

The objective is to text the advertisement's claim that participants in new diet program lose weight, on average, more than 13 pounds.

Hypothesis:

Null hypothesis:H₀:μ=13

Alternative hypothesis:Hₐ:μ>13

Here, μ be the mean weight loss of all participants.

n=30,

Degree of freedom n-1=30-1=29

\bar{x}=13.8 and s=3.1

To test the null hypothesis H₀, the value of test static would be calculated as follows:

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Hence, the value of the test static for the hypothesis with the mean weight loss of these participants as 13.8 pounds with a standard deviation of 3.1 pounds is 1.413.

Learn more about hypothesis from here brainly.com/question/14783359

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6 0
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