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IgorLugansk [536]
2 years ago
11

Please help with these questions (no links)

Mathematics
1 answer:
seraphim [82]2 years ago
3 0
If the cakes are circles,
3.14(4)2= 50.24
3.14(5)2= 78.5
78.5-50.24= 28.26

#1 is 28.26
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If two numbers on a fraction are negative, does that make the fraction positive
Sedbober [7]
I think the answer is yes
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3 years ago
18. Find the area of the triangle.
igor_vitrenko [27]

Answer:  16.5

Step-by-step explanation:

Base: 11

Height: 3

Area of triangle = bh/2

11x3=33

33/2= 16.5

7 0
2 years ago
A store manager is looking at past jewelry sales to determine what sizes of rings to keep in stock. The list shows the ring size
scoundrel [369]

Using it's concept, it is found that the variance of the data-set is of 1.15.

The mean of a data-set is the <u>sum of all observations divided by the number of observations,</u> hence:

E(X) = \frac{9 + 7 + 6.5 + 7.5 + 7 + 8 + 5 + 6 + 7.5 + 8}{10} = 7.15

The variance is the <u>sum of the differences square between each value and the mean, divided by the number of values</u>. Hence:

V(X) = \frac{1}{10}[(9 - 7.15)^2 + (7 - 7.15)^2 + (6.5 - 7.15)^2 + (7.5 - 7.15)^2 + (7 - 7.15)^2 + (8 - 7.15)^2 + (5 - 7.15)^2 + (6 - 7.15)^2 + (7.5 - 7.15)^2 + (8 - 7.15)^2] = 1.15

A similar problem is given at brainly.com/question/1527299

3 0
2 years ago
If y/z = 0.7 what is the degree of a
katrin [286]

Answer:

wellcome to the red king dome. =0098=0.98

Step-by-step explanation:

4 0
3 years ago
9. D(-3, -8), E(1, -2)<br> Midpoint
Zielflug [23.3K]
I hope it helps! :)

4 0
3 years ago
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