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3 years ago

If f(x) = 2x - 4 and g(x) = x2 - 4x, find f(1/4).

Mathematics

1 answer:

MAXImum [283]3 years ago

5 0

Answer:

1/8

Step-by-step explanation:

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Lainey bought a set of 20 markers for 6 dollars

jeka94

Answer:

$3.33

Step-by-step explanation:

Divide 20 by 6

7 0

3 years ago

Read 2 more answers

Find the perimeter of the

anzhelika [568]

167

hope that helps :)))

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3 years ago

If x+2y=3 and xy=2 show that x³+8y³+9=0

kicyunya [14]

Step-by-step explanation:

<u>Given</u>

x + 2y = 3 and xy = 2
show that x³ + 8y³ + 9 = 0

<u>Solution in steps:</u>

(x + 2y)³ = 3³
x³ + 3x²(2y) + 3x(2y)² + (2y)³ = 27
x³ + 6x(xy) + 12y(xy) + 8y³ = 27
x³ + 8y³ + 6(x + 2y)xy = 27 ⇒ Substitute values
x³ + 8y³ + 6*3*2 = 27
x³ + 8y³ + 36 - 27 = 0
x³ + 8y³ + 9 = 0

Done

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3 years ago

Which of these can not form a perpendicular bisector?v PLZ HALLLLPPPP

polet [3.4K]

A circle obviously. A perpendicular bisector requires right angles which a circle can physically never have.

4 0

4 years ago

Read 2 more answers

2. The alkalinity of a fluid (pH) can be modeled in terms of its hydrogen ion concentration (H+, measured in moles/liter) of the

nataly862011 [7]

Given the equation:

$pH=-log\mleft(H^+\mright)$

You know that a lab technician finds that a sample of fluid has this pH:

$pH=4.5$

Then, in order to find the hydrogen ion concentration of the fluid, you need to follow these steps:

1. Substitute the pH given in the exercise into the equation:

$4.5=-log(H^+)$

Multiply both sides by -1:

$-4.5=\log (H^+)$

2. Solve for:

$H^+$

Remember that, by definition:

$\log _b\mleft(c\mright)=a\Rightarrow b^a=c$

In this case, you can identify that:

$\begin{gathered} a=-4.5 \\ b=10 \\ c=H^+ \end{gathered}$

Hence, substituting values and simplifying, you get:

$\begin{gathered} b^a=c \\ 10^{-4.5}=H^+ \\ H^+=0.00003162278\text{ }\frac{moles}{liter} \end{gathered}$

Therefore, the answer is:

$H^+=0.00003162278\text{ }\frac{moles}{liter}$

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1 year ago