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slamgirl [31]
2 years ago
11

Solve x^2=x+6 by factoring

Mathematics
1 answer:
mihalych1998 [28]2 years ago
4 0

Answer:

(x+2)(x-3)

Step-by-step explanation:

easy

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A researcher surveyed 220 residents of a city about the number of hours they
olga55 [171]

Answer:

Margin of error of 0.0485 hours.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.025 = 0.975, so Z = 1.96.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this question:

\sigma = 0.35, n = 220

The margin of error is of:

M = z\frac{\sigma}{\sqrt{n}}

M = 1.96\frac{0.35}{\sqrt{200}}

M = 0.0485

Margin of error of 0.0485 hours.

5 0
2 years ago
Pleaseeee helpppp it’s due in 6 minutes helpp!! Explain
artcher [175]

Answer:

I might be wrong but since ur in a rush: 173

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Will mark brainliest help!
kakasveta [241]

Answer:

52.5

Step-by-step explanation:

Since ED ≈ AD, ∆AED is a isosceles triangle where <EAD and <AED has same angle measurement

Now, m<B = 105°, since ABCD is a parallelogram, <B = <D

so, m<ADC = 105° so, m<ADE = 180°-105° = 75°

Now, m<EAD+m<AED+m<ADE = 180°

or, m<AED+m<AED+m<ADE = 180°

or, x+x+75°=180°

or, 2x=180+75°

or, 2x=105°

or, x=52.5°

3 0
2 years ago
Jack is buying his neighbor’s plot of land. Jack owns 23 acres. The land he is buying is 15 acres. How many acres will Jack have
Andrews [41]
He will have 38 acres of land.
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2 years ago
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Need some help with model contexts with two variable expressions
malfutka [58]
Answer is
=1720 pounds
30s, 70 L

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2 years ago
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