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Amiraneli [1.4K]

1 year ago

6

Cory earns d dollars for every hour he works after school. the weekends, his hourly wage is three times the sum of his after sch

ool wage and $2. Write and simplify an expression that represents Cory's weekend wage.

1 answer:

blondinia [14]1 year ago

3 0

Answer:

3d+2

Step-by-step explanation:

Because he is getting 3x the amount of his wages it would be 3xd, simplified to 3d. Then add 2.

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Math question #1 please show steps

-Dominant- [34]

Answer:

C

Step-by-step explanation:

An approximation of an integral is given by:

$\displaystyle \int_a^bf(x)\, dx\approx \sum_{k=1}^nf(x_k)\Delta x\text{ where } \Delta x=\frac{b-a}{n}$

First, find Δx. Our a = 2 and b = 8:

$\displaystyle \Delta x=\frac{8-2}{n}=\frac{6}{n}$

The left endpoint is modeled with:

$x_k=a+\Delta x(k-1)$

And the right endpoint is modeled with:

$x_k=a+\Delta xk$

Since we are using a Left Riemann Sum, we will use the first equation.

Our function is:

$f(x)=\cos(x^2)$

Therefore:

$f(x_k)=\cos((a+\Delta x(k-1))^2)$

By substitution:

$\displaystyle f(x_k)=\cos((2+\frac{6}{n}(k-1))^2)$

Putting it all together:

$\displaystyle \int_2^8\cos(x^2)\, dx\approx \sum_{k=1}^{n}\Big(\cos((2+\frac{6}{n}(k-1))^2)\Big)\frac{6}{n}$

Thus, our answer is C.

*Note: Not sure why they placed the exponent outside the cosine. Perhaps it was a typo. But C will most likely be the correct answer regardless.

5 0

2 years ago

Rehana has some money. After she spends Rs 15, she has three-quarters of the initial amount left. The amount left is

Ray Of Light [21]

The answer is 45, so c

8 0

2 years ago

<img src="https://tex.z-dn.net/?f=%28y%20-%201%29%28y%20%2B%203%29" id="TexFormula1" title="(y - 1)(y + 3)" alt="(y - 1)(y + 3)"

m_a_m_a [10]

Sense there's only a y, you'd assume y is 1 or 1y.

you'd make the 1 a negative 1 to get rid of the subtraction sign.

you'd add together the 2 ys making it 2y. then add -1 + 3, which would be 2.

so, the answer would be 2y + 2.

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2 years ago

your banking cupcakes for the school dance and your recipe makes 24 cupcakes and needs 2 cups of milk . you need to make 288 cup

zhannawk [14.2K]

6 quarts of milk will be needed

8 0

2 years ago

Read 2 more answers

Jose earned 5h + 5 dollars for h hours and Alex earned 8h – 10 for h hours mowing lawns. If they earned the same amount

AlekseyPX

Answer:

5 hours

Step-by-step explanation:

This is a classic pre-algebra question.

$5h+5=8h-10\\5=3h-10\\15=3h\\h=5$

3 0

2 years ago