Answer:
x=1 y = -1/2
(1,-1/2)
Step-by-step explanation:
7x-2y=8
5x+2y=4
I would use elimination since we have 2y in one equation and -2y in the other
7x-2y=8
5x+2y=4
--------------------
12x = 12
Divide each side by 12
12x/12 = 12/12
x =1
The substitute back into equation 2
5(1) +2y = 4
5 +2y = 4
Subtract 5
5-5+2y = 4-5
2y = -1
Divide by 2
2y/2 = -1/2
y = -1/2
You are given that all three sides are equal. You also know that all three angles are also equal. Therefore since all three angles are equal and every triangle has 180 degrees, each angle is 180/3 = 60
So
7x - 3 = 60 Add three to both sides
7x - 3 + 3 = 60 + 3 Combine
7x = 63 Divide by 7
7x/7 = 63/7
x = 9 And that's your answer.
The answer is 30, assuming it is a cube,
2. 3 whole number box
0.6 for the dividend
4.4 on the top of the divided box
1/3 for the first /
0.6/2.64 for the second /
4.4 for the box above the estimate one
Yes for the estimate question
A. 32.58
B. 23.4
C. 0.9
I really hope this will help your sister hope she feels better *smiles*
Sorry if I got these wrong
Is that it the whole question?
