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Snowcat [4.5K]
2 years ago
10

Why is (-3,6] a better answer than (-3,6)

Mathematics
1 answer:
Pani-rosa [81]2 years ago
7 0

(-3, 6) includes all numbers between -3 and 6 but it does not include -3 and 6.

when you put square parentheses you include the number on the edge

so if an anwser includes all numbers between -3 and 6 and the number 6 it's correct to write (-3,6]

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The measures of the angles of a triangle solve for X
kompoz [17]

Answer:

x = 7

Step-by-step explanation:

Because this is a right triangle, one angle is a right angle (90°). All triangles have all three angle measures adding up to 180°, so the other two angles' measures add up to 90° (90 + 90 = 180).

Combine like terms of the angle measures.

6x + 9x = 15x

-3 + (-12) = -15

15x - 15

Because the sum of the measures of the two angles have to equal 90,

15x - 15 = 90

Add 15 from both sides.

15x = 105

Divide both sides by 15.

x = 7

To check, substitute 7 in both expressions.

6(7) - 3 = 39

9(7) - 12 = 51

39 + 51 + 90 (the measure of the right angle) = 180, so the value of x is 7.

I hope this helped :)

7 0
3 years ago
The perimeter it a square field is 224. How long is
geniusboy [140]
Since each side of a sqare is equal and there are four sides to the square
224 = 4x
X being the side length.
Then you would simiply divide by 4 to isolate x
x = 56
A side length is 56
8 0
3 years ago
Show me a step by step work and solve the problem
AveGali [126]
What’s the question?
6 0
3 years ago
Need help due in 3 minutes!!!!
Yanka [14]

Answer:

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Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
What is the answer and how do you solve this??
OLga [1]
Since they are both equal to y, you can set -7x and x+8 equal to each other.
- 7x = x + 8 and solve for x then use what you got for x to solve for y
5 0
2 years ago
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