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2 years ago

David earns $8 per hour. He works 40 hours each week. How much does he earn after 6 weeks

Mathematics

1 answer:

Vikki [24]2 years ago

5 0

David will earn $1,920 in six weeks
8 x 40 = 320 a week
320 x 6 = 1,920 in six weeks

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Which will result in a perfect square trinomial (3x-5) (-3x-5)?

makvit [3.9K]

Answer:

-9x² + 25

Step-by-step explanation:

To solve, use FOIL. FOIL:

First

Outside

Inside

Last

Solve "First":

(3x)(-3x) = -9x²

Solve "Outside":

(3x)(-5) = -15x

Solve "Inside":

(-5)(-3x) = +15x

Solve "Last":

(-5)(-5) = +25

Combine like terms:

-9x² - 15x + 15x + 25

-9x² (-15x + 15x) + 25

-9x² + 25

-9x² + 25 is your answer.

8 0

3 years ago

Cedric had 2,204 baseball cards that he wanted to sell. He sold them in packages of 4 and charged $2.25 for each package. If he

Dmitry [639]

He would make $1239.75

divide 4 in 2,204

multiply by 2.25

4 0

3 years ago

Read 2 more answers

Order the following numbers from least to greatest<br> numbers:1 8/25,1.3,5/4

Brut [27]

Answer:

i think it 5/4, 3.1, 1 8/25

Step-by-step explanation:

let me know if its right

8 0

3 years ago

What is the least common multiple of 8 and 12?<br> 96<br> 24<br> 48

Aleonysh [2.5K]

Answer:

B. 24 :)

Step-by-step explanation:

I hope this helps!

6 0

2 years ago

Given: y" - 2y' = 6t + 5e^2t. Find the correct form to use for y_p if the equation is solved using Undetermined coefficients. Do

const2013 [10]

Answer:

$y_p=A+Bt+Ce^{2t}$

Step-by-step explanation:

Given: $y'' - 2y' = 6t + 5e^{2t}$ .

we need to find the correct form for $y_p$ if the equation is solve using undetermined coefficients.

A first order differential equation $\frac{\mathrm{d} y}{\mathrm{d} x}=f\left ( x,y \right )$ is said to be homogeneous if $f(tx,ty)=f(x,y)$ for all t.

Consider homogeneous equation $y''-2y'=0$

Let $y=e^{rt}$ be the solution .

We get $(r^2-2r)e^{rt}=0$

Since $e^{rt}\neq 0$ , $r^2-2r=0$ .

So, we get solution as $y_c=c_1+c_2e^{2t}$

As constant term and $e^{2t}$ are already in the R.H.S of equation

$y" - 2y' = 6t + 5e^{2t}$ , we can take $y_p$ as $y_p=A+Bt+Ce^{2t}$

6 0

3 years ago