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3 years ago

Please help it’s due soon,

Mathematics

1 answer:

Oksanka [162]3 years ago

3 0

Answer:

Step-by-step explanation:

g(x)= 2(-4)^2 - 2 = 2(16) - 2 = 32 - 2 = 30

2(-2)^2 - 2 = 2(4) - 2 = 8 - 2 = 6

2(0) - 2 = 0 - 2 = -2

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Through (-3,-5) and (0,-2)

GarryVolchara [31]

Answer:

Step-by-step explanation:

I think your doing slope, so...

-2 - - 5 3

------------------ = --------------- = 1

0 - - 3 3

(simplifyed)

7 0

3 years ago

A manufacturer of college textbooks is interested in estimating the strength of the bindings produced by a particular binding ma

IrinaVladis [17]

Answer:

538 books should be tested.

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:

$\alpha = \frac{1-0.99}{2} = 0.005$

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

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

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.

How many books should be tested to estimate the average force required to break the binding to within 0.08 lb with 99% confidence?

n books should be tested.

n is found when $M = 0.08$

We have that $\sigma = 0.72$

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

$0.08 = 2.575*\frac{0.72}{\sqrt{n}}$

$0.08\sqrt{n} = 2.575*0.72$

$\sqrt{n} = \frac{2.575*0.72}{0.08}$

$(\sqrt{n})^{2} = (\frac{2.575*0.72}{0.08})^{2}$

$n = 537.1$

Rounding up

538 books should be tested.

6 0

3 years ago

The monthly rental for an apartment is 412.50 how much would the rent be for a year?

gavmur [86]

Answer:

4950

Step-by-step explanation:

412.50 x 12

412.50 is the mothly rental

12 are the month in a year

so it is 4950

8 0

3 years ago

How to do (x-355)+(x)+(80+2x)=2425

sweet-ann [11.9K]

Answer:

x = 675

Step-by-step explanation:

Collect terms and solve the resulting 2-step linear equation.

(x-355)+(x)+(80+2x)=2425 . . . . . given

4x -275 = 2425 . . . simplify

4x = 2700 . . . . . . . add 275

x = 675 . . . . . . . . . divide by 4

8 0

2 years ago

Please help (-8) ^{-4}

katovenus [111]

$(-8)^{-4}\\----------\\Use:\ a^{-n}=\frac{1}{a^n}\\-----------\\(-8)^{-4}=\frac{1}{(-8)^4}=\frac{1}{8^4}=\boxed{\frac{1}{4,096}}$

5 0

3 years ago

Read 2 more answers