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3 years ago

This question is annoying

Mathematics

1 answer:

Fed [463]3 years ago

4 0

Answer:

Step-by-step explanation:

We want everything in terms of money. Also, profit is what was earned minus what was spent. There is only one number for earning so let's start with that.

She gets profit from her jobs, which are 50 dollars per job. She completed 60, so you jst multiply the two to find the earnings. If you don't get that let me know.

60*50=3000

Now we go onto costs. keep in mind the 3000 so far and that now all costs will be subtracting from that.

There looks to be 3 different costs. Supplies, driving and phone.

Supplies was 380, so easy peasy.

Driving was .30 dollars per mile for 800 miles. So again, we just multiply the two, and you can ask if you don't get why.

.3*800=240

You also could multiply 800 by 3/10 since .3=3/10 OR you could divide it by 10/3. I'll be happy to explain if you don't get that either. Anyway...

Phone was 198. Again, super easy.

Now we can do all the math, earnings minus costs.

earnings was 3000 and we figured out all the costs.

3000-380-240-198 = 2182

So it's $2,182.00

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What are the coordinates of the midpoint of CD where C(2,-6) and D(4,10)?

mojhsa [17]

Answer:

The midpoint of CD is (3, 2)

Step-by-step explanation:

The movement of x is +2 from C to D and the movement of y is 16 from C to D

2 (C's x coordinate) +2/2 (to find the movement up to the x coordinate of the midpoint) and -6 (C's y coordinate) + 16/8 (to find the movement up to the y coordinate of the midpoint)

This is 2+1 as the x coordinate and -6+8 as the y coordinate that is (3, 2)

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3 years ago

Find the critical value z alpha/2 that corresponds to the given confidence level. 81%

Karolina [17]

Critical values are basically cut-off values that indicate regions where the test statistic is unlikely to lie. The required critical value is 1.31.

<h3></h3><h3>What are critical Values?</h3>

Critical values are basically cut-off values that indicate regions where the test statistic is unlikely to lie; for example, if the null hypothesis is true, the critical value is surpassed with probability alpha.

The value of α can be written as,

α = 1 - 0.81 = 0.19

$z_{\frac{\alpha}{2}} = \dfrac{0.19}{2}= 0.095$

Now, using the z-table the value of z will be,

z = 1.31

Hence, the required critical value is 1.31.

Learn more about Critical Values:

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5 0

2 years ago

Please help me I am really stuck

noname [10]

You would set up a proportion for people that choose beach/ total
So (14+17+19)/(50+50+50) which simplifies to 50/150 or 1/3
From here we can set 1/3 = x/1200 and solve for x
To do this we would multiply each side by 1200 to isolate x

(1/3)×1200= 400
So x=400
Therefore, 400 people can be expected to pick the beach

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4 years ago

Which of the following is three dimensional and indefinitely large ?

Artemon [7]

Complete question is;

Which of the following is three-dimensional and infinitely large?

A. A solid

B. A line

C. A plane

D. Geometric space

Answer:

D. Geometric space

Step-by-step explanation:

The answer is option D.

A one dimensional object has only length, a two dimensional object has length and breadth, while a 3 dimensional object has length, breadth and depth.

Thus, a line is a one dimensional object because it has just length.

A plane is a two dimensional object.

While a solid and geometric space are both 3 dimensional objects.

However, solid is finitely large while geometric space is infinitely large.

6 0

3 years ago

Elizabeth bought 6 packages of cat food and 3 packages of dog food. Each package of cat food contained 9 cans, and each package

frutty [35]

She bought 42 more cans of cat food becuase 6 packages with 9 cans is 6 times 9 and that is 54 -42 to equal 12 because 3 times 4 which is how much dog food she buys

7 0

3 years ago

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This question is annoying​

This question is annoying