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3 years ago

What is the quadratic equation to this question

Mathematics

1 answer:

-BARSIC- [3]3 years ago

5 0

Answer:

f(x) = 4x − 12

Step-by-step explanation:

It's not quadratic. It's linear. Each time x increases by 1, f(x) increases by 4. So the slope is 4. The y-intercept (when x=0) is -12. The equation of the line is therefore:

f(x) = 4x − 12

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A bag contains pennies, nickels, dimes and quarters. There are 50 coins in all. Of the coins, 8% are pennies and 30% are dimes.

Gala2k [10]

Answer:

$6.49

Step-by-step explanation:

Pennies = 8% of 50 =4 ; 4x0.01 = 0.04

Dimes = 30% of 50 = 15 ; 15x0.10 = 1.50

Nickels = 10 + 4(number of pennies) = 14; 14x 0.05 =0.70

Quarters = 50 - 33 (total pennies + dimes + nickels ) = 17 ; 17x0.25=4.25

Therefore total amount in bag = 0.04+1.50+0.70+4.25 = $6.49

4 0

4 years ago

Multiply and simplify the product.

DaniilM [7]

Answer:

Step-by-step explanation:

We have the expression:

$(3-5i)(-2+4i)$

Distributive Property:

$=(3-5i)(-2)+(3-5i)(4i)$

Distribute:

$=(-6+10i)+(12i-20i^2)$

Simplify:

$=(-6+10i)+(12i-20(-1))$

Simplify:

$=-6+10i+12i+20$

Combine like terms:

$=(-6+20)+(10i+12i)$

Simplify:

$=14+22i$

Hence, our answer is B.

8 0

3 years ago

Read 2 more answers

How to find the average rate of change for f(x)=2^x;[2,4]

forsale [732]

Answer:

Step-by-step explanation:

The average rate of change over the interval $[a,b]$ for a function $f$ is $\frac{f(b)-f(a)}{b-a}$ .

So the average rate of change for $f(x)=2^x$ on $[2,4]$ is:

$\frac{2^4-2^2}{4-2}=\frac{16-4}{2}=\frac{12}{2}=6$ .

7 0

3 years ago

What is the difference? StartFraction x 5 Over x 2 EndFraction minus StartFraction x 1 Over x squared 2 x EndFraction StartFract

Troyanec [42]

The difference of the given fraction is expressed as $\frac{x^2+4x-1}{x(x+2)}$

Given the expression:

$\frac{x+5}{x+2}-\frac{x+1}{x^2+2x} \\$

Take the LCM of the fraction to have:

$=\frac{x+5}{x+2}-\frac{x+1}{x(x+2)} \\=\frac{x(x+5)-(x+1)}{x(x+2)} \\=\frac{x^2+5x-x-1}{x(x+2)}\\=\frac{x^2+4x-1}{x(x+2)}$

Hence the difference of the given fraction is expressed as $\frac{x^2+4x-1}{x(x+2)}$

Learn more on fractions here; brainly.com/question/78672

7 0

2 years ago

Read 2 more answers

If a class has 12 female and 20 male students what is the probability when two students are randomly chosen it will be a male fi

ycow [4]

Answer:

A 6%

Step-by-step explanation:

Is all luck

7 0

3 years ago