MATHEMATICS HIGH SCHOOL

Which expression is a PRODUCT?A) 8(6 + 3)
B)
8
(6 + 3)
C) 5(2) + 2(6 x 3)
Eliminate
D) 5(2 + 3) - 4(8 + 1)

Answers

Answer 1
Answer: the answer is A thanks for asking
Answer 2
Answer:

Answer:

thank you

Step-by-step explanation:

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F(x)=(lnx)²/2x
give f '(x)=??

Answers

f(x)=((lnx)^2)/(2x);\ D_f:x\in\mathbb{R^+}\n\nuse:\left[(f(x))/(g(x))\right]'=(f'(x)g(x)-f(x)g'(x))/([g(x)]^2)\n\nf'(x)=([(lnx)^2]'\cdot2x-(lnx)^2\cdot(2x)')/((2x)^2)=(*)\n\n\ [(lnx)^2]'=2lnx\cdot(1)/(x)=(2lnx)/(x)\n\n(2x)'=2\n\n(*)=((2lnx)/(x)\cdot2x-(lnx)^2\cdot2)/(4x^2)=(4lnx-2(lnx)^2)/(4x^2)=([4lnx-2(lnx)^2]:2)/(4x^2:2)=(2lnx-(lnx)^2)/(2x^2)
f(x)=((\ln x)^2)/(2x)\n\nf'(x)=(2\ln x\cdot (1)/(x)\cdot2x-(\ln x)^2\cdot2)/((2x)^2)\nf'(x)=(2\ln x(2-\ln x))/(4x^2)\nf'(x)=-(\ln x(\ln x-2))/(2x^2)

51% of the tickets sold at a school carnival were early-admission tickets. If the school sold 100 tickets in all, how many early-admission tickets did it sell?

Answers

Answer:

51 were the total number of the tickets sold at a school carnival wereearly-admission tickets.

Step-by-step explanation:

Total number of tickets sold by  = 100

Let x be the early-admission tickets sold by the school.

As 51% of the tickets sold at a school carnival were early-admission tickets.

so

x=(51)/(100)* 100

  = 51

Therefore, 51 were the total number of the tickets sold at a school carnival wereearly-admission tickets.

which of the following linear equations when graphed on a coordinate grid has the steepest slope? a. y=1/4x-7,    b. y=7/3x-2, c. y=9x+2/3   d. y=6x=5/9

Answers

C. 9x is keyword (m=slope which is 9)

A. has slope of 1/4

B. has slope of 7/3

D. has slope of 6

Therefore, C. has the highest slope.

Jamal borrowed $625 from his brother 8 years ago. Jamal repaid his brother in full with $830. What simple annual interest rate did Jamal pay?A. 4.0%
B. 4.1%
C. 4.2%
D. 4.3%

Answers

Answer: b 4.1%

Step-by-step explanation:
B. 4.1%. ...................

12. Daniel scored a 90% on his first math test. If Daniel worked 18 problems correctly, how many problems were on the test?​

Answers

Answer:

20

Step-by-step explanation:

Simplifies to 9/10 which is 90%. Hope this helps!

PLEASE DON'T GUESS I NEED TO GET THIS RIGHT!!!!!!!!!Bob and his best friend Bill have the same birthday, but Bob is 3 years older than Bill. Let the variable x represent Bob’s age and y represent Bill’s age. Which equation models the relationship between Bill’s age and Bob’s age?
A. y = x/3
B. y = x + 3
C. x = y + 3
D. y = 3x

Answers

Well if Bob (represented by x) is three years older than Bill (y), the only one correct is x=y+3. Dividing by three wouldn't make sense (choice A), adding three more years onto Bob won't work (choice B), and multiplying Bob's age by three wouldn't work either (choice D). The answer is choice C. 
x=y+3
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