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blagie [28]
2 years ago
9

What is 7a to the power of 2 - 2a to the power of 2

Mathematics
2 answers:
harkovskaia [24]2 years ago
8 0

Answer:

5a to the power of 2 ofc

Step-by-step explanation:

Natasha2012 [34]2 years ago
5 0

Answer:

5a²

Step-by-step explanation:

It is 5a² because 7a² and 2a² are like terms, so we are able to subtract them. If we subtract 7-2 we get 5. It is the same thing, 7a²-2a² is equal to 5a²

Hope this helps!

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the answer is:

78.7 (i rounded it to the nearest tenth)

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3 years ago
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Ray Of Light [21]

Answer:

A

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
1) Simplify the following expressions: a) sin²108° + sin² 18° ​
abruzzese [7]

Note that

108° = 90° + 18°

so

sin(108°) = sin(90° + 18°) = sin(90°) cos(18°) + cos(90°) sin(18°) = cos(18°)

Then

sin²(108°) + sin²(18°) = cos²(18°) + sin²(18°) = 1

by the Pythagorean identity.

8 0
2 years ago
What are the characteristics of pie chart?
anygoal [31]

In a pie chart, the arc length of each slice (and consequently its central angle and area) is proportional to the quantity it represents.

The characteristics of pie chart.

<h3>What do you mean by chart?</h3>

A chart is a graphical representation for data visualization, in which "the data is represented by symbols, such as bars in a bar chart, lines in a line chart, or slices in a pie chart". A chart can represent tabular numeric data, functions or some kinds of quality structure and provides different info.

Given that:

A pie chart (or a circle chart) is a circular statistical graphic, which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area) is proportional to the quantity it represents.

The pieces of the graph are proportional to the fraction of the whole in each category.

Each slice of the pie is relative to the size of that category in the group as a whole.

Learn more about chart here:

brainly.com/question/28186947

#SPJ1

3 0
1 year ago
If the angle of a sector measures 60°, what fraction of the circle is the sector?
maks197457 [2]

The angle of the sector is also equal to the arc measure of the circle. This is because a sector is made up of two radii of a circle.

A circle is 360 degrees.

60 / 360 = 1/6

The sector is 1/6 of the circle.

Hope this helps!! :)

6 0
3 years ago
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