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anyanavicka [17]
2 years ago
5

PLSS HELP ME WITH THIS!! 20 POINTS!

Mathematics
1 answer:
Sphinxa [80]2 years ago
3 0

Answer:

total price inluding tax is $40.95

Step-by-step explanation:

phone cost: $39

Tax amount: 5% of $39  -> 39 x 0.05 = $1.95

phone cost + tax:

$39 + $1.95 = $40.95

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6x11÷2
6 x 11 is 66
66 ÷ 2 is 33
The answer is 33
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What is the missing factor for x^3 = x^2 (?)
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This does not have a cube root. It has a CUBIC (degree 3) term.

In Algebra II we learn about rational roots theorem, synthetic division, and Descartes' rule of signs.
It happens that 2 is a root, so x-2 is a factor.
When we divide this synthetically, we obtain the depressed polynomial (other) factor as x2+3x +6.
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The product is sin 30 and sin 60 is some as the product of and
patriot [66]
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3 years ago
How do I Evaluate [(30 + 6) − 32] ÷ 9 ⋅ 2?
djverab [1.8K]

Use PEMDAS:

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

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4 0
4 years ago
Match each function with its inverse function. use function composition to determine your answers.
topjm [15]

QUESTION 1

\boxed {f(x) = 2x + 6 \to \: g(x) =  \frac{1}{2}x - 3 }

The reason is that:

g(f(x)) = 2( \frac{1}{2} x - 3) + 6

Expand:

g(f(x)) = x - 6+ 6

g(f(x)) = x

QUESTION 2

\boxed {f(x) =3 -  2x  \to \: g(x) =   - \frac{1}{2}(x - 3)}

The reason that

g(f(x)) =  -  \frac{1}{2} (3 - 2x - 3)

g(f(x)) =  -  \frac{1}{2} (- 2x )

g(f(x)) =x

QUESTION 3

\boxed {f(x) = \sqrt[3]{3x}+ 2 \to \: g(x) =   \frac{ {(x - 3)}^{3} }{3} }

The reason is that:

f(g(x)) =  \sqrt[3]{ \frac{3 {(x - 2)}^{3} }{3}  }  + 2

f(g(x)) =  x-2 + 2

f(g(x))=x

QUESTION 4

\boxed {f(x)=3\sqrt[3]{x + 2} \to \: g(x) = \frac{1}{27} {x}^{3} - 2}

The reason is that

f(g(x)) = 3 \sqrt[3]{ \frac{1}{27} {x}^{3}  - 2 + 2}

f(g(x)) = 3 \sqrt[3]{ \frac{1}{27} {x}^{3} }

f(g(x)) = 3 \times  \frac{1}{3} x

f(g(x)) =x

6 0
3 years ago
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