6 times as many as 7 is 42 is your comparison sentence
Answer:
1) 25
2) 2
3) f(g(1)) = 42
Step-by-step explanation:
1) Given that f(x) = 4x^2 + 9
If x = -2
f(-2) = 4(-2)^2 + 9
f(-2) = 4(4) + 9
f(-2) = 16 + 9
f(-2) = 25
2) Given that f(x) = 4x - 6
y = 4x - 6
Replace y with x
x = 4y - 6
MAke y the subject of the forfmula
4y = x+ 6
y = (x+6)/4
SInce x = 2
f^(-1)(2) = (2+6)/4
f^(-1)(2) = 8/4 = 2
3) If f(x) = 6x and g(x) = x+6
f(g(x)) = f(x+6)
f(x+6) = 6(x+6)
Since x = 1
f(g(1)) = 6(1+6)
f(g(1)) = 6(7)
f(g(1)) = 42
Answer:
Arithmetic sequence
5+70(n-1)
Step-by-step explanation:
Answer:
E. 0.6872
Step-by-step explanation:
An appropriate calculator or Z-table is needed for answering questions like this. My calculator tells me the area is ...
0.687267787 ≈ 0.6873
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The web app shown in the attachment gives the same 4-digit value.
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If you look up the area values in a table, you might find ...
p(z < -1.2) = 0.1151
p(z < 0.85) = 0.8023
Then the difference is ...
p(-1.2 < z < 0.85) = 0.8023 -0.1151 = 0.6872
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Note that the least significant digit of the difference between rounded numbers often cannot be trusted to be accurate--as in this case.