Answer:
D.300
Step-by-step explanation:
<span>The expression 81xy/3x and 9xy , divide it by 3 & cancel out 3x/3x to get 27y. 27y does not equal 9xy, so the expressions are not equivalent</span>
Answer:
(a - b)^2 = 49 - 4b^2 +2ab
Step-by-step explanation:
Given: a^2 + b^2 = 7b (assuming A is really “a”)
b^2 + (2b - a)^2 = 7^2
Find; (a - b)^2
Plan: Use Algebraic Manipulation
Start with b^2 + (2b - a)^2 = 7^2 =>
b^2 + 4b^2 - 4ab + a^2 = 49 by expanding the binomial.
a^2 + b^2 + 4b^2 - 4ab = 49 rearranging terms
a^2 + b^2 -2ab - 2ab + 4b^2 = 49 =>
a^2 - 2ab + b^2 = 49 - 4b^2 +2ab rearranging and subtracting 4b^2 and adding 2ab to both sides of the equation and by factoring a^2 - 2ab + b^2
(a - b)^2 = 49 - 4b^2 +2ab
Double Check: recalculated ✅ ✅
(a - b)^2 = 49 - 4b^2 +2ab
Answer:
379.94 m²
Step-by-step explanation:
3.14×11²= 379.94 m²
Answer:
p=7
∠BRG=49
Step-by-step explanation:
∠BRG and ∠YRG are on a straight line together. Therefore, they are supplementary and add to 180 degrees.
∠BRG+∠YRG=180
We know that ∠BRG is 7p and ∠YRG is 131 degrees. Substitute 7p in for ∠BRG and 131 for ∠YRG.
7p+131=180
We want to find out what p is. In order to do that, we have to get p by itself. First, subtract 131 from both sides.
7p+131-131=180-131
7p=49
Next, divide both sides by 7.
7p/7=49/7
p=49/7
p=7
Now, we have to find what ∠BRG is.
∠BRG=7p
We know that p=7, so substitute p in for 7
∠BRG=7*7
∠BRG=49
So, p=7 and ∠BRG=49