(2³ + 11) • 2 − 8 + 11 = what Pl answer

Will mark Brainliest!!!

41

Step-by-step explanation: It's very easy to make mistakes in order of operations problems if you try to do too much of the problem in your head. It really is worth the extra time it takes to write out every step.

In this problem, simplify (2³ + 11) first because it's located inside the parentheses and always simplify inside the parentheses first.

2³ is just 2 · 2 · 2 or 8.

So our second step reads (8 + 11) · 2 - 8 + 11.

Since we still have parentheses, we still have to simplify what's inside.

8 + 11 is 19.

So our next step reads 19 · 2 - 8 + 11.

According to PEMDAS, multiplication come before addition and subtraction.

So our next step is to multiply 19 · 2 to get 38.

So we have 38 - 8 + 11 which then simplifies to 41.

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1