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Effectus [21]
4 years ago
12

How to calculate surface area, make up 2 full examples.

Mathematics
1 answer:
DanielleElmas [232]4 years ago
8 0

If the surface is rectangular, then

S=ab(a-length, b - width)

If the surface is square, then

S=a^2

If the surface is triangular, then

S=\frac{ah}{2}(a-the \:biggest\:side, h-height)

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The owner of a small firm has just purchased a personal computer, which she expects will serve her for the next two years. The o
tatiyna

Answer: 26 dollars

Step-by-step explanation:

The owner needs to consider that:

To measure the risk she can multiply the probability of an event to happen  (P)* the impact (I) (in this case the impact is the cost).

All these eventes can be considered as independent between each other (no correlation), so you can add their  P*I.

In this case:

P1*I1= 1%*550=5.5

P2*I2=6%*150=9

P3*I3=15%*100=15

So, the expected value of what she may spend for repairng is = P1*I1+P2*I2+P3*I3= 5.5+9+15= 29.5

She shoould not spend more than 29.5 dollars, otherwise,  she will spend more in the surge supresor than in expected reapring value

4 0
4 years ago
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Can a triangle have side lengths 4, 4, 7? <br> 1.no <br> 2. Yes <br> 3. not enough information
Marina CMI [18]
Yes! The lengths of each side must be less than the sum of the other two lengths. It looks like this:
4+4>7
7+4>4
4+7>4
8 0
3 years ago
Pls help me ee brainly ​
nataly862011 [7]

Answer:

56/5   /   4/5

56/5   x   5/4

280/20

14

the first option, 14, because the number of catalogs is 56/5 % 4/5,  is correct.

Step-by-step explanation:

3 0
3 years ago
Haruka hiked several kilometers in the morning. She only hiked 6 kilometers in the afternoon, which was 25 percent less she had
Allisa [31]
6km is 3/4 of her morning speed so 6/(3/4)=6×4/3=8km. Total distance=6+8=14km.
5 0
4 years ago
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Whats the answer to -3a+8-8(7-2a)​
Serga [27]

Answer:3.1875

Step-by-step explanation: Simplifying

-3 + 8 + -8(7 + -2a) = 0

-3 + 8 + (7 * -8 + -2a * -8) = 0

-3 + 8 + (-56 + 16a) = 0

Combine like terms: -3 + 8 = 5

5 + -56 + 16a = 0

Combine like terms: 5 + -56 = -51

-51 + 16a = 0

Solving

-51 + 16a = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '51' to each side of the equation.

-51 + 51 + 16a = 0 + 51

Combine like terms: -51 + 51 = 0

0 + 16a = 0 + 51

16a = 0 + 51

Combine like terms: 0 + 51 = 51

16a = 51

Divide each side by '16'.

a = 3.1875

Simplifying

a = 3.1875

5 0
4 years ago
Read 2 more answers
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