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RSB [31]
3 years ago
5

-4x+7 x= -1 evaluate the expression

Mathematics
1 answer:
NeX [460]3 years ago
3 0
Hello luv! So here is how I will evaluate this expression
-4x+7, x=-1 so you are using substitution
-4(-1)+7
=11

:)

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35<br> Find the value of x.<br> 30<br> 16<br> Х
IrinaK [193]

Answer:

B:34

Step-by-step explanation:

16² + 30² = c²

256 + 900= 1156

square root of 1156 is 34

3 0
2 years ago
An industrial psychologist conducted an experiment in which 40 employees that were identified as "chronically tardy" by their ma
iren [92.7K]

Answer:

The probability plot of this distribution shows that it is approximately normally distributed..

Check explanation for the reasons.

Step-by-step explanation:

The complete question is attached to this solution provided.

From the cumulative probability plot for this question, we can see that the plot is almost linear with no points outside the band (the fat pencil test).

The cumulative probability plot for a normal distribution isn't normally linear. It's usually fairly S shaped. But, when the probability plot satisfies the fat pencil test, we can conclude that the distribution is approximately linear. This is the first proof that this distribution is approximately normal.

Also, the p-value for the plot was obtained to be 0.541.

For this question, we are trying to check the notmality of the distribution, hence, the null hypothesis would be that the distribution is normal and the alternative hypothesis would be that the distribution isn't normal.

The interpretation of p-valies is that

When the p-value is greater than the significance level, we fail to reject the null hypothesis (normal hypothesis) and but if the p-value is less than the significance level, we reject the null hypothesis (normal hypothesis).

For this distribution,

p-value = 0.541

Significance level = 0.05 (Evident from the plot)

Hence,

p-value > significance level

So, we fail to reject the null or normality hypothesis. Hence, we can conclude that this distribution is approximately normal.

Hope this Helps!!!

7 0
3 years ago
A circular fence is being placed around a tree. The diameter of the fence is 4 feet. How much fence is used around the tree? Lea
Step2247 [10]

Answer:

8π

Step-by-step explanation:

If we are given the diameter of this circular fence, then we can solve for the radius. Just take the diameter of 4 and divide by 2 which is 2.

The circumference of a circle is 2πr²

Just plug in the variables and you get 2π(2)² which is 8π

Hope this helps! :)

5 0
3 years ago
10,14 and 18 can someone answer Pls pls
Sergeeva-Olga [200]
10. ? = 35

14. x = 1/2

18. 100 mm = 10 cm. 
4 0
3 years ago
Perimeter, Circumference,
SOVA2 [1]

Answer:

Perimeter = 120 m

Step-by-step explanation:

Perimeter = (24+36)*2 = 120 m

8 0
3 years ago
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