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2 years ago

Please help will mark Brainliest!!

Mathematics

1 answer:

Orlov [11]2 years ago

6 0

Answer:

number 2

Step-by-step explanation:

im not that sure but i think it's that one

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Divide. check your answer

slava [35]

Step-by-step explanation:

:)..................

7 0

2 years ago

Urgent help algebra 2

Vaselesa [24]

Answer:

y = - 1/4 x + 1

Step-by-step explanation:

Find two convenient integer coordinates like -4,2 and 4, 0

use these points to calculate the slope to be -1/4

intercept is b = 1

y = -1/4 x + 1

3 0

2 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

Please help me with this question!!

Bess [88]

Answer:

$x=16 * cos(46)$

Step-by-step explanation:

Well, first let's look at our trig identities. We can set up a cosine function using the given angle:

$cos (46^{o} ) = \frac{x}{16}$ (adjacent/hypotenuse)

Then, multiplying both sides by 16 gives us:

$x=16 * cos(46)$

Hope this helps!

4 0

3 years ago

What is the slope of the graph of 2y – 5x = 14?

Lerok [7]

Solving for y, we add 5x to both sides to get 2y=14+5x, and divide by 2 to get
y=2.5x+7. The slope is the coefficient of x, which is 2.5

4 0

3 years ago

Please help will mark Brainliest!!​

Please help will mark Brainliest!!