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galina1969 [7]
3 years ago
12

How can victoria justify step 3 of her work

Mathematics
2 answers:
Marina CMI [18]3 years ago
7 0

Answer:

More info please

Step-by-step explanation:

Wittaler [7]3 years ago
4 0
A little more info please?
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100 POINTS
masha68 [24]

Answer:

Sum of the interior angles = 1440 degrees.

Step-by-step explanation:

There are a total of 10 interior angles in the decagon. Now for all polygons the sum of all the exterior angles is 360 degrees.  There are 10 exterior angles in the decagon  and, since it is regular, each of them = 360/10 = 36 degrees. Each interior angle therefore  measures 180 - 36 degrees and the sum of the interior angles is this value times ten.

360 / 10 = 36.

180 - 36 = 144.

10 * 144 = 1440 degrees.

8 0
3 years ago
Read 2 more answers
Write a phrase for each algebraic expression using a word
konstantin123 [22]

Answer:

yessir

Step-by-step explanation:

5 0
3 years ago
If 4 pounds of sugar cost $2, the cost of 1 pound of sugar is $ and the cost of 10 pounds of sugar is $ Bryan drives at an avera
Jet001 [13]

Answer:

The cost of one pound of sugar is $0.5 and the cost of 10lbs of sugar is $5

Bryan is driving 180 miles

Step-by-step explanation:

6 0
3 years ago
The amount of time Jill trained for a marathon this month is​ 125% of the amount of time she trained last month. Jill trained fo
Liono4ka [1.6K]

Answer:

Step-by-step explenation . First you know that the amount of time she trained for the marathon is 125% of the time she trained last month. We also know that she trained 80 hours last month.  And the question wants us to know how many hours she trained this month.  So we do 100% =x

And 125% = 80 so we cross multiply it becomes 100 X 80 =125x witch eaquals to 8,000 divided by  125 witch is 64. So the final Answer is 64 . IF I AM CORRECT PLEASE MARK BRAINLIEST.

7 0
2 years ago
Why cant 81-x to the forth power be factored unti (3+x) squared times (3-x) squared
cricket20 [7]

Answer:

Below.

Step-by-step explanation:

81 - x^4        Treat as the difference of 2 squares:

= (9 - x^2)(9 + x^2)

We can further factor the 9 - x^2   (difference of 2 squares)

= (3 - x)(3 + x)(9 + x^2).

9 + x^2 can't be factored.

6 0
3 years ago
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