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3 years ago

(5x+2)(x^2+6x-2) in standard from

Mathematics

1 answer:

vovangra [49]3 years ago

5 0

Answer:

5x^3 + 32x^2 + 2x - 4

Step-by-step explanation:

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2m = 480.6 what is the value of m

ivolga24 [154]

Step-by-step explanation:

2m=480.6

To get m you gotta divide 480.6 by 2

To make m the subject of the formula you have to make 2 cross over to the other side I. E over the equal sign

I. E 480.6/2=240.3

7 0

3 years ago

Read 2 more answers

The Highway Safety Department wants to study the driving habits of individuals. A sample of 40 cars traveling on a particular st

Ipatiy [6.2K]

Answer:

We need a sample size of at least 101

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.

What sample size is needed to estimate the true average speed to within 2 mph at 99% confidence?

We need a sample of at least n.

n is found when M = 2. So

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

$2 = 2.575*\frac{7.8}{\sqrt{n}}$

$2\sqrt{n} = 2.575*7.8$

$\sqrt{n} = \frac{2.575*7.8}{2}$

$(\sqrt{n})^{2} = (\frac{2.575*7.8}{2})^{2}$

$n = 100.85$

Rounding up

We need a sample size of at least 101

8 0

3 years ago

Read 2 more answers

There is a total of 1,500 people in the town of Markston.Only 55% of them voted during the towns elections this year?

aleksandr82 [10.1K]

Answer:

Assuming you want to know how many voted, 825 ppl.

Step-by-step explanation:

Convert percent to decimal. 55% = 0.55

0.55 * 1500 = 825

6 0

3 years ago

A wildlife preservation group records the number of squirrels in a city park. The first count recorded is 30 squirrels. A second

ipn [44]

Answer:

A F(x)=30x

Step-by-step explanation:

just plug number in to the equations to see which one matches

5 0

4 years ago

Read 2 more answers

What is the value of x in the equation 2(x+3) = 4(x-1)?<br> own

11111nata11111 [884]

Step-by-step explanation:

Solving

2x + 6 = 4x - 4

Bringing like terms on one side

6 + 4 = 4x - 2x

10 = 2x

10 / 2 = x

5 = x

8 0

3 years ago