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3 years ago

MATH HOMEWORK HELP!! >> Solving systems by GRAPHING:

1 answer:

7 0

I dont know the coordinates because i dont feel like putting them in right now buttttt........

main street bus equation is y=2x+40

County bus line equation is y=3x+20

thats all i've got.

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Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. She also earns a base salary

algol13

Danielle earned $969 last week if she sold $4,400 in electronics merchandise

<h3><u><em>Solution:</em></u></h3>

Given that, Danielle earns a 7.25% commission on everything she sells at the electronics store where she works.

She also earns a base salary of $650 per week.

We have to find how much did she earn last week if she sold $4,400 in electronics merchandise?

Now, we know that, earned amount = base salary + commission

Given that she earns a 7.25% commission on everything she sells

<em><u>So commission earned for selling $ 4400 is given as:</u></em>

commission earned = 7.25 % of 4400

$\text { commission earned }=\frac{7.25}{100} \times 4400=7.25 \times 44=319$

Earned amount = base salary + commission = 650 + 319 = 969

Hence, she earned $969 last week

7 0

3 years ago

EASY, PLEASE HELPPPP, ASAP

solniwko [45]

Answer:

C. 60 ft

Step-by-step explanation:

5 ft woman / 2 ft shadow

? ft antenna / 24 ft shadow

proportion time!

25*5 = 120

120/2 = 60

remember to press dat heart button

7 0

2 years ago

A computer downloads files at a constant rate. The table shows how many megabytes the computer downloads over specific lengths o

PolarNik [594]

The slope of the line would be 3.75.

5 0

3 years ago

Anna is saving to buy a new cell phone. Her mother is helping Anna by contributing money each month. What is the ratio between t

Dmitry [639]

Answer:

Option D. 3:1, $120

Step-by-step explanation:

The complete question in the attached figure

Part 1) What is the ratio between the amount of money contributed by Anna and the amount contributed by her mother?

Let

x -----> the amount of money contributed by Anna

y ----> the amount of money contributed by her mother

we know that

Looking at the table

The value of x is equal to $x=\$30+\$60+\$90+\$120=\$300$

The value of y is equal to $y=\$10+\$20+\$30+\$40=\$100$

Find the ratio x/y

substitute the values

$\frac{x}{y}=\frac{300}{100}=\frac{3}{1}$

Part 2) What was the total amount saved in April?

we know that

To find out the total amount saved in April, adds Mon's contribution in April plus Anna's contribution in April

$(\$30+\$90)=\$120$

3 0

3 years ago

Read 2 more answers

A flat circular plate has the shape of the region x squared plus y squared less than or equals 1.The plate, including the bound

rjkz [21]

Answer:

We have the coldest value of temperature $T(\frac{3}{4},0) = -9/16$ . and the hottest value is $T(-(3/4),\frac{\sqrt{7}}{4})=\frac{5}{16}$ .

Step-by-step explanation:

We need to take the derivative with respect of x and y, and equal to zero to find the local minimums.

The temperature equation is:

$T(x,y)=x^{2}+2y^{2}-\frac{3}{2}x$

Let's take the partials derivatives.

$T_{x}(x,y)=2x-\frac{3}{2}=0$

$T_{y}(x,y)=4y=0$

So, we can find the critical point (x,y) of T(x,y).

$2x-\frac{3}{2}=0$

$x=\frac{3}{4}$

$4y=0$

$y=0$

The critical point is (3/4,0) so the temperature at this point is: $T(\frac{3}{4},0)=(\frac{3}{4})^{2}+2(0)^{2}-(\frac{3}{2})(\frac{3}{4})$

$T(\frac{3}{4},0)=-\frac{9}{16}$

Now, we need to evaluate the boundary condition.

$x^{2}+y^{2}=1$

We can solve this equation for y and evaluate this value in the temperature.

$y=\pm \sqrt{1-x^{2}}$

$T(x,\sqrt{1-x^{2}})=x^{2}+2(1-x^{2})-\frac{3}{2}x$

$T(x,\sqrt{1-x^{2}})=-x^{2}-\frac{3}{2}x+2$

Now, let's find the critical point again, as we did above.

$T_{x}(x,\sqrt{1-x^{2}})=-2x-\frac{3}{2}=0$

$x=-\frac{3}{4}$

Evaluating T(x,y) at this point, we have:

$T(-(3/4),\sqrt{1-(-3/4)^{2}})=-(-\frac{3}{4})^{2}-\frac{3}{2}(-\frac{3}{4})+2$

$T(-(3/4),\frac{\sqrt{7}}{4})=\frac{5}{16}$

Now, we can see that at point (3/4,0) we have the coldest value of temperature $T(\frac{3}{4},0) = -9/16$ . On the other hand, at the point $-(3/4),\frac{\sqrt{7}}{4})$ we have the hottest value of temperature, it is $T(-(3/4),\frac{\sqrt{7}}{4})=\frac{5}{16}$ .

I hope it helps you!

4 0

2 years ago