Answer: 43
Step-by-step explanation:
<u>Concept:</u>
Here, we need to understand the idea of evaluation.
When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.
<u>Solve:</u>
**Disclaimer** I assume that the expression is [4x² + 5x - 8]. If it was, then you may refer to my answer. If it was not, then you may point it out and I will redo it.
Given
4x² + 5x - 8
x = 3
Substitute the value of x
4(3)² + 5(3) - 8
Simplify exponents
4(9) + 5(3) - 8
Simplify multiplication
36 + 15 - 8
Final subtraction and addition
43
Hope this helps!! :)
Please let me know if you have any questions
Answer:
2x=4
Step-by-step explanation:
3(2x-5)-4x+8=-2x+1
6x-15-4x+8=-2x+1
2x-15+8=-2x+1
2x-7=-2x+1
4x=8
2x=4
y = k/x, where k is the constant
if x = 7 and y = 4
4=k/7
k = 4*7 = 28
y = 28/x
answer is D
Complete Question
The complete question is shown on the first uploaded image
Answer:
The probability is
Step-by-step explanation:
The probability that Miguel’s score on the Water Hole is at most 5 is mathematically evaluated as
Substituting values from the table
P^ = 1571/5200 = 0.3021
99% C I = 0.3021 + or - 2.58sqrt((0.3021(1 - 0.3021))/5200) = 0.3021 + or - 0.0064 = 0.296 to 0.309
lower limit = 0.296
upper limit = 0.309