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GarryVolchara [31]
3 years ago
5

Your friend evaluates the power (-3)^2 is your friend correct ? explain

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
5 0

The evaluation of the expression  (-3)² is incorrect the correct answer will be  (-3)²=+9.

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using the signs like addition,substraction, multiplication and division.

Here we have an expression in the question:-

=  (-3)²  = (-3  x   -3  )  =  9

So the answer of the question will be 9 because the multiplication of the two negative sign is always positive.

To know more about expression follow

brainly.com/question/723406

#SPJ1

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In ΔGHI, \overline{GI} GI is extended through point I to point J, \text{m}\angle GHI = (3x+13)^{\circ}m∠GHI=(3x+13) ∘ , \text{m}
Rzqust [24]

Given:

In ΔGHI, GI is extended through point I to point J.

m\angle GHI=(3x+13)^\circ,m\angle IGH=(x+8)^\circ,m\angle HIJ=(6x-5)^\circ

To find:

The measure of angle GHI.

Step-by-step explanation:

According to exterior angle theorem, the measure of an exterior angle of a triangle is equal to the sum of measure of two opposite angles.

Using exterior angle theorem, we get

m\angle HIJ= m\angle GHI+m\angle IGH

(6x-5)^\circ=(3x+13)^\circ+(x+8)^\circ

(6x-5)^\circ=(4x+21)^\circ

6x-4x=21+5

2x=26

Divide both sides by 2.

x=13

Now,

m\angle GHI=(3x+13)^\circ

m\angle GHI=(3(13)+13)^\circ

m\angle GHI=(39+13)^\circ

m\angle GHI=52^\circ

Therefore, the measure of angle GHI is 52 degrees.

7 0
3 years ago
A rectangle is shown with dimensions in inches the inches are three-sevenths and two-ninths. What is the area of the rectangle i
notka56 [123]
The area of a rectangle is simply width * length,

well, you have both, so is just their product

\bf \stackrel{width}{\cfrac{3}{7}}\cdot \stackrel{length}{\cfrac{2}{9}}\implies \cfrac{3\cdot 2}{7\cdot 9}\implies \cfrac{1\cdot 2}{7\cdot 3}\implies \cfrac{2}{21}
5 0
3 years ago
Sort the cultural values and beliefs about women into the appropriate categories. Decide whether each was common
9966 [12]

Answer:

before: unable to own property, too delicate to do sports, unequal to men

after: able to attend college, could earn money from work, had a voice in government

Step-by-step explanation:

7 0
2 years ago
I don't understand this please???
Marta_Voda [28]
So 3/4 of 1 and 1/3
'of' can be roughly translated into multiply so
3/4 times 1 and 1/3 or
3/4 times 4/3=12/12=1

the answer is 1 cup of rasins
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3 years ago
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How many hours does it take for the earth to rotate
Aleonysh [2.5K]

Answer:

23 hours and 56 minutes

step-by-step explanation:

It actually takes the Earth slightly over 23 hours and 56 minutes to rotate once around this axis. In this time all the stars appear to revolve once around the Earth and return to their starting positions. Astronomers call this period of time a sidereal day.

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