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3 years ago

Which equation could be used to solve the question?

Mathematics

1 answer:

34kurt3 years ago

3 0

D. None of these

It is 7.5w=60

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Carly got her haircut for $45.60 she wants to tip her hair dresser 15% what is her total paid?

egoroff_w [7]

Answer:

$52.44

Step-by-step explanation:

Long method:

1. Convert the percentage into a decimal (15/100 = 0.15)

2. Multiply the decimal by the cost of the haircut (0.15 x $45.60 = $6.84)

3. Add this product by the cost of the haircut ($6.84 + $45.60 = $52.44)

Quicker Way (easier w/ a calculator)

1. Add 100% to the percentage she wants to add (100% + 15% = 115%) You can also express this as a number (115/100 = 1.15)

2. Multiply this new percentage by the cost of the haircut (1.15 x $45.60 = 52.44)

In a single equation, it would be

$\frac{115}{100} \times 45.60 = 52.44$

5 0

3 years ago

A set of bed prices are normally distributed with a mean of 1300 dollars and a standard deviation of 300 dollars. A wooden bed h

koban [17]

Answer:

0.3707

Step-by-step explanation:

5 0

4 years ago

State the vertical asymptote of the rational function. f(x) =((x-9)(x+7))/(x^2-4)

Lubov Fominskaja [6]

$D:x^2-4\not=0\\
D:x^2\not=4\\
D:x\not=-2 \wedge x\not =2\\\\
\displaystyle
\lim_{x\to-2^-}\dfrac{(x-9)(x+7)}{x^2-4}=\\
\dfrac{(-2-9)(-2+7)}{(-2^-)^2-4}=\dfrac{-11\cdot5}{4^+-4}=\dfrac{-55}{0^+}=-55\cdot\infty=-\infty\\
\dfrac{(-2-9)(-2+7)}{(-2^+)^2-4}=\dfrac{-11\cdot5}{4^--4}=\dfrac{-55}{0^-}=-55\cdot(-\infty)=\infty
$

$\displaystyle
\lim_{x\to2^-}\dfrac{(x-9)(x+7)}{x^2-4}=\\
\dfrac{(2-9)(2+7)}{(2^-)^2-4}=\dfrac{-7\cdot9}{4^--4}=\dfrac{-63}{0^-}=-63\cdot(-\infty)=\infty\\
\dfrac{(2-9)(2+7)}{(2^+)^2-4}=\dfrac{-7\cdot9}{4^+-4}=\dfrac{-63}{0^+}=-63\cdot\infty=-\infty\\$

So, the vertical asymptotes are $x=\pm 2$

5 0

4 years ago

Read 2 more answers

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iren2701 [21]

With what ? Life ? I need help with that too

7 0

3 years ago

Read 2 more answers

Solve |4x - 8| < 12

Art [367]

| 4x - 8 | < 12

-12 < 4x - 8 < 12......add 8 to every section
-12 + 8 < 4x - 8 + 8 < 12 + 8
-4 < 4x < 20 ....divide every section by 4
-4/4 < 4x/4 < 20/4....simplify
-1 < x < 5 <====

6 0

4 years ago