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Rufina [12.5K]
2 years ago
6

I am a two digit square number. the sum of my digits is 13. what Square number am I

Mathematics
1 answer:
skelet666 [1.2K]2 years ago
5 0
49 Because 7x7 is 49 & 4+9=13
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In country X, the average yearly salary of 50-year-olds with 16 years of education is $50,275, while the average yearly salary o
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Answer:

38%

Step-by-step explanation:

The additional wage compared 12 years of education to 16 years of education is:

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3 years ago
This is a map of three towns. It shows the train line and the highway that connects the towns. The north direction is shown. The
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Answer:

  about 106 km

Step-by-step explanation:

The distance between the two towns can be estimated several ways. In the attachment, we chose to measure the angles on the map. Using the law of sines, we can estimate the unknown distance.

The distance can also be estimated using the Tounouse-Avaria distance as a ruler. For best results, that ruler would need to be subdivided to an appropriate level.

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<h3>angle measures</h3>

The angles in the triangle can be measured using a protractor or some other tool. The attachment shows the results from a geometry program:

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  • ∠TAM ≈ 24°
<h3>law of sines</h3>

The law of sines tells us the distances are proportional to the sines of the opposite angles:

  TM/sin(TAM) = TA/sin(TMA)

  TM = sin(24°)×(250 km)/sin(107°) ≈ 106.3 km

The distance from Tounouse to Mt. Monotti is estimated to be about 106 km.

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<em>Alternate solution</em>

Using a compass or dividers to project the TM distance onto TA, we find it is between 0.4 and 0.5 of the TA distance. The difference between 2×TM and TA can be estimated to be about 0.4×TM. That is, ...

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This estimate is consistent with the one found using angle measures.

4 0
1 year ago
There are 20 20 coins in a jar. Each coin is either a nickel or a quarter. If one of the coins is selected at random, the probab
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Cross multiplying, it becomes

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3 years ago
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