Answer:
130
Step-by-step explanation:
31+19=50
Angle in a triangle add up to 180
180-50=130
You have to combine like terms.
Like terms are those with the same letters raised to the same power.
These are the sums of the like terms:
1) 4y^2 + y^2 + 14y^2 = 19y^2
2) - 3y + 4y - 7y = - 6y
3) - 6 - 2 = - 8
Simplified expression: 19y^2 - 6y - 8<------------ answer
Let's go through each answer.
A.
Answer: The amount left over was 4.05 L.
Estimation: 3.15 + 4.75 is about 7.
7 L – 4 L = 3 L
The amount left over was about 3 L.
This is incorrect because 3.15+4.75 is closer to 8 than 7.
B.
Answer: The amount left over was 3.95 L.
Estimation: 3.15 + 4.75 is about 8.
8 L – 4 L = 4 L
The amount left over was a little less than 4 L.
This is correct because 3.15+4.75 is close to 8 and to find the amount left over you do have to subtract.
The correct answer is B.
Answer: The amount left over was 3.95 L.
Estimation: 3.15 + 4.75 is about 8.
8 L – 4 L = 4 L
The amount left over was a little less than 4 L.
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-x<-x+7(x-2)
-x<-x+7x-14 Distribute the 7
-x<6x-14 Combine like terms
-7x<-14 Move all variables to one side
x>2 Divide by -7 to isolate the variable
Answer:
10. MN=17.9 in
11. ST= 4.1 cm
12. CE= 13.0 yd
Step-by-step explanation: hope this helps :)
