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3 years ago

C/3 = 30/5 what steps do I take to see what c is?

Mathematics

1 answer:

Travka [436]3 years ago

7 0

For this case we must find the value of "c" of the following expression:

$\frac {c} {3} = \frac {30} {5}$

We solve the right side of the equation:

$\frac {30} {5} = 6$

Rewriting:

$\frac {c} {3} = 6$

We multiply both sides of the equation by "3":

$c = 6 * 3\\c = 18$

Answer:

$c = 18$

You might be interested in

2/7 decimal from rounded to the nearest thousandth place

Wewaii [24]

Answer:

0.286

Step-by-step explanation:

2/7 as a decimal is 0.28571429

0.28571429 rounded to thousandths place = 0.286

hope this helps!!!

8 0

3 years ago

An IQ test is designed so that the mean is 100 and the standard deviation is 18 for the population of normal adults. Find the sa

melisa1 [442]

Answer:

At least 98 people need to be sampled. It is not a huge number, that is, it is not difficult to sample 98 people, so it is a reasonable sample size for a real world calculation.

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:

$\alpha = \frac{1-0.9}{2} = 0.05$

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 $1-0.05 = 0.95$ , so $z = 1.645$

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:

We need a sample size of at least n.

n is found when M = 3. We have that $\sigma = 18$ .

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

$3 = 1.645*\frac{18}{\sqrt{n}}$

$3\sqrt{n} = 1.645*18$

Simplifying by 3

$\sqrt{n} = 1.645*6$

$(\sqrt{n})^{2} = (1.645*6)^{2}$

$n = 97.41$

Rounding up,

At least 98 people need to be sampled. It is not a huge number, that is, it is not difficult to sample 98 people, so it is a reasonable sample size for a real world calculation.

8 0

3 years ago

A sequence of transformations maps ABC to AA'B'C. The sequence of transformations that maps A’B’C’ is a __ followed by a __

m_a_m_a [10]

A sequence of transformations maps ABC to AA'B'C. The sequence of transformations that maps A’B’C’ is

A (4,-4)
B (2, -8); and
C (6, -6)

followed by

A' (-2, 4)
B' (-2, 2)
C' (0, 6).

<h3>What is Transformation?</h3>

A transformation is a broad phrase that encompasses four distinct methods for changing the shape and/or position of a point, a line, or a geometric figure.

Hence, the sequence of transformations maps ABC to AA'B'C. The sequence of transformations that maps A’B’C’ is

A (4,-4)
B (2, -8); and
C (6, -6)

followed by

A' (-2, 4)
B' (-2, 2)
C' (0, 6).

Learn more about transformation at:
brainly.com/question/2689696
#SPJ1

8 0

2 years ago

Complete 8,9 for 5-8 points.

AysviL [449]

Step-by-step explanation:

8. Let's call the number x. We can set up the equation -3x - 5 = -10. Adding 5 to both sides, we have -3x = -5, and when we divide both sides by -3, we have x = 5/3.

9. Again, we'll call the number x. The equation is 2x - 3 = -13. We can write -3 instead of +(-3) because adding a negative number is the same as subtracting. Adding 3 to both sides, we have 2x = -10, and dividing bu -2, we have x = -5. Hope this helps!

7 0

4 years ago

What price do farmers get for the peach crops? in the third week of June, a random sample of 40 farming regions gave a sample me

prohojiy [21]

Given:
Sample size, n = 40
Sample mean, xb = $6.88
Population std. deviation, σ = $1.92 (known)
Confidence interval = 90%

Assume normal distribution for the population.
The confidence interval is
(xb + 1.645*(σ/√n), xb - 1.645*(σ/√n)
= (6.88 + (1.645*1.92)/√40, 6.88 - (1.645*1.92)/√40)
= (7.38, 6.38)

Answer: The 90% confidence interval is (7.38, 6.38)

6 0

3 years ago