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vivado [14]
3 years ago
13

Round each number to the nearest tenth.

Mathematics
1 answer:
Wittaler [7]3 years ago
8 0
The correct answer is choice C) 136.2.

Why is it C)? Because 264.72 - 128.49 = 136.23 and then round it to nearest tenth and u get 136.2.
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Enter in the number below that will make the right expression equivalent to the left expression:
Sati [7]
1.9+n
2.10+6
3.2+10
4.17
5.3+3
6.-3+n
7 0
3 years ago
(7)(8)(9)<br><br> Geometry<br><br> Check Ans<br><br> 7) s = 15<br> 8) y = 64 x = 99<br> 9) 96
Katyanochek1 [597]
Problem 7: Correct
Problem 8: Correct
Problem 9: Correct

The steps are below if you are curious

===========================================================================================

Problem 7

S = 180*(n-2)
2340 = 180*(n-2)
2340/180 = n-2
13 = n-2
n-2 = 13
n = 13+2
n = 15

I'm using n in place of lowercase s, but the idea is the same. If anything, it is better to use n for the number of sides since S already stands for the sum of the interior angles. I'm not sure why your teacher decided to swap things like that.

===========================================================================================

Problem 8

First find y
y+116 = 180
y+116-116 = 180-116
y = 64

which is then used to find x. The quadrilateral angles add up to 180*(n-2) = 180*(4-2) = 360 degrees
Add up the 4 angles, set the sum equal to 360, solve for x

x+y+125+72 = 360
x+64+125+72 = 360 ... substitution (plug in y = 64)
x+261 = 360
x+261-261 = 360-261
x = 99

===========================================================================================

Problem 9

With any polygon, the sum of the exterior angles is always 360 degrees

The first two exterior angles add to 264. The missing exterior angle is x
x+264 = 360
x+264-264 = 360-264
x = 96

6 0
3 years ago
What is the answer to 81.56 + n - 2.55
Anna71 [15]
81.56+n-2.55=0
81.56+n=2.55
n=2.55-81.56
n=-79.01
5 0
3 years ago
Read 2 more answers
This is Anya's solution for the equation x ^ 2 - 6x - 7 = 0 Is her solution correct ? Explain your answer in detail points ANSWE
tia_tia [17]

Answer:

Anya is incorrect.

Step-by-step explanation:

=)

The correct answer is x = −1 or x = 7

=)

5 0
2 years ago
Read 2 more answers
50% more than what number is 20% less than 60% more than 10?
k0ka [10]

Answer:

Step-by-step explanation:

Let's start by decoding this :)

First lets do 60% more than 10; 16 (mental math)

Next, lets do 20% less than 16;  x/16 = 80/100 (Equation)

After solving by cross multiplying & then simplifying (make sure both denominators are 100), you should get 12.8 as your final #! Hope this helped.

6 0
2 years ago
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