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Leviafan [203]
3 years ago
7

Three more than five times a number is 38

Mathematics
1 answer:
mario62 [17]3 years ago
5 0
3+5x=38
-3 on both sides
5x=35
divide by 5 on both sides
x=7
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Determine whether the equation Y=x^2 +13 represents a linear or non linear function and explain
telo118 [61]

Answer:

yés it is linear because

two variables that gives a straight line when plotted on a graph.

if it was correct tell me good or it was mistake tell me truth

Step-by-step explanation:

hope it was correct

3 0
1 year ago
A test is used to assess readiness for college. In a recent​ year, the mean test score was 20.3 and the standard deviation was 4
Vlada [557]

Answer:

\mu = 20.3

\sigma = 4.9

And we can find the limits in order to consider values as significantly low and high like this:

Low\leq \mu -2 \sigma= 20.3- 2*4.9 = 10.5

High\geq \mu +2 \sigma= 20.3+ 2*4.9 = 30.1

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

For this case we can consider a value to be significantly low if we have that the z  score is lower or equal to - 2 and we can consider a value to be significantly high if its z score is  higher tor equal to 2.

For this case we have the mean and the deviation given:

\mu = 20.3

\sigma = 4.9

And we can find the limits in order to consider values as significantly low and high like this:

Low \leq \mu -2 \sigma= 20.3- 2*4.9 = 10.5

High\geq \mu +2 \sigma= 20.3+ 2*4.9 = 30.1

6 0
3 years ago
In ΔXYZ, ∠Y=90° and ∠X=24°. ∠ZWY=81° and XW=7.1. Find the length of WY to the nearest 10th.
Brums [2.3K]

Answer:

0.5

Step-by-step explanation:

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4 0
3 years ago
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Talja [164]

Answer:

-1

Step-by-step explanation:

Slope= rise/run

Since the line is decreasing, it will be negative.

6 0
3 years ago
A right come has a volume of 24pie cubic meters and a radius of 3 meters find the height of the cone
JulijaS [17]
Hello!

The equation for find the h when given volume and radius is

h = 3 \frac{V}{ \pi  r^{2} }

h is height
v is volume
r is radius

Put in the values you know

3 \frac{24 \pi }{ \pi  3^{2} }

Since there is pi on the top and bottom we can get rid of it

multiply the 3 by the top number

\frac{72}{9}

the answer is 8m

Hope this helps!
4 0
4 years ago
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