3 years ago

12(a−4) simplified I am confused with this question

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

8 0

Answer:

-48

Step-by-step explanation:

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A store is having a 10%-off sale. It gives an additional 20% off if the item is still above $100 after the first discount. A jac

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37.49$ That Would be the correct answer

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4 years ago

Find (f • g) (x) Assume x>0

lisabon 2012 [21]

Answer:

$\textsf{B.} \quad (f \cdot g)(x)=10x$

Step-by-step explanation:

Given:

$\begin{cases}f(x)=\sqrt{50x}\\g(x)=\sqrt{2x}\end{cases}$

$\begin{aligned}\textsf{As }(f \cdot g)(x) & = f(x) \cdot g(x)\\\implies (f \cdot g)(x)& = \sqrt{50x} \cdot \sqrt{2x}\end{aligned}$

$\textsf{Apply radical rule} \quad \sqrt{a}\sqrt{b}=\sqrt{ab}:$

$\begin{aligned}\implies (f \cdot g)(x) &= \sqrt{50x2x}\\& = \sqrt{100x^2}\end{aligned}$

Rewrite 100 as 10²:

$\implies (f \cdot g)(x)=\sqrt{10^2x^2}$

$\textsf{Apply exponent rule} \quad a^bc^b=(ac)^b:$

$\implies (f \cdot g)(x)= \sqrt{(10x)^2}$

$\textsf{Apply radical rule} \quad \sqrt{a^2}=a, \quad a \geq 0:$

$\implies (f \cdot g)(x)=10x$

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2 years ago

Tickets to Wrestlemania cost 600. the sales tax is 30% what is the final price

andrew-mc [135]

Answer:

$780

Step-by-step explanation:

600*.30=180

600+180=780

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3 years ago

April and June share a reward of $135 in the ratio of 5:4. How much does April receive?

tamaranim1 [39]

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3 years ago

What is the sum of 1/4 and 3/8

kupik [55]

$\dfrac{1}{4}+\dfrac{3}{8}=(*)\\Find\ LCD\ (Least\ Common\ Denominator)\\list\ the\ multiples\\of\ 4:\ \ 0;\ 4;\ \fbox8;\ 12;...\\of\ 8:\ \ 0;\ \fbox8;\ 16;\ 24;\ ...\\LCD\left(\dfrac{1}{4};\ \dfrac{3}{8}\right)=8\\\\(*)=\dfrac{1\cdot2}{4\cdot2}+\dfrac{3}{8}=\dfrac{2}{8}+\dfrac{3}{8}=\dfrac{2+3}{8}=\dfrac{5}{8}$

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4 years ago