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andrew-mc [135]
2 years ago
15

What strategies do you use when solving for an unknown number​

Mathematics
1 answer:
frez [133]2 years ago
5 0

Answer:

adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

Step-by-step explanation:

please mark brainleist

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Computers from a particular company are found to last on average for 24 months without any hardware malfunction with a standard
vodomira [7]

Answer:

At least 68% of observations lie between 22 and 26 months.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 24

Standard deviation = 2

22 = 24 - 2

22 is one standard deviation below the mean

26 = 24 + 2

26 is one standard deviation above the mean.

So, by the empirical rule, at least 68% of observations lie between 22 and 26 months.

8 0
3 years ago
SOMEONE HELP PLEASE HELP
kotegsom [21]

triangle XBR is similar to triangle YNJ.


Similar triangles are triangles with lengths in proportion, and congruent corresponding angles. When naming a similar triangle, the letters or vertexes are listed in a certain order. For instance, angle X is the same as angle Y so those two letters have to be in the same position. In this case, they are both the first letters. Angle B is congruent to angle N and angle R is congruent to angle J so they will also have to be in corresponding positions. The side lengths are extraneous information that can be used to check, but otherwise I would just stick with angles. Hope this helps!

6 0
3 years ago
Simplify the expression b+2/b^2-4
Lubov Fominskaja [6]
3b because b^2-4= 1/b. So 2/1/b= 2b b+2b = 3b
8 0
3 years ago
Read 2 more answers
Find the value of y.
Ratling [72]

Answer:

61 degrees

Step-by-step explanation:

Since one of the sides is 102, the opposite one will be the same.

so,

102+102+95

= 299

The total is 360 degrees

360-299

= 61 degrees

pls mark me brainliestt :))

4 0
3 years ago
Cameroon corp. manufactures and sells electric staplers for $15.90 each. if 10,000 units were sold in december, and management f
Serga [27]
Sales in December = 10,000*15.90 = $159,000

For 5% forecast growth each month;

Sales in January = (1+0.05)*Sales in December = 1.05*159,000 = $166,950
Sales in February = (1+0.05)*Sales in January = 1.05*166,950 = $175,297.50

The company should budget for $175,297.50 sales in February.
5 0
4 years ago
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