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Ira Lisetskai [31]

2 years ago

7

Kevin has a negative balance of $10 in his bank account if he deposits $45 into his acc how much money does kevin have after the

deposit

1 answer:

Neporo4naja [7]2 years ago

4 0

Answer:

$35

Step-by-step explanation:

-$10 + $45 = $35

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Prove algebraically that r = 10/2+2sinTheta is a parabola

Xelga [282]

Answer:

$y = - \frac{ 1 }{10} {x}^{2} + \frac{5}{2}$

Step-by-step explanation:

We want to prove algebraically that:

$r = \frac{10}{2 + 2 \sin \theta}$

is a parabola.

We use the relations

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

and

$y = r \sin \theta$

Before we substitute, let us rewrite the equation to get:

$r(2 + 2 \sin \theta) = 10$

Or

$r(1+ \sin \theta) = 5$

Expand :

$r+ r\sin \theta= 5$

We now substitute to get:

$\sqrt{ {x}^{2} + {y}^{2} } + y = 5$

This means that:

$\sqrt{ {x}^{2} + {y}^{2} }=5 - y$

Square:

${x}^{2} + {y}^{2} =(5 - y)^{2}$

Expand:

${x}^{2} + {y}^{2} =25 - 10y + {y}^{2}$

${x}^{2} =25 - 10y$

${x}^{2} - 25 = - 10y$

$y = - \frac{ {x}^{2} }{10} + \frac{5}{2}$

This is a parabola (0,2.5) and turns upside down.

4 0

2 years ago

Someone please help me will give BRAILIEST!!!!!!

Kipish [7]

The answer would be 15

6 0

3 years ago

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Multiply 5(−37). Simplify your answer.

crimeas [40]

-2 1/7 is the correct answer.

5 0

2 years ago

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There is a bag of tiles where 8 are red, 5 are blue, 4 are orange, and 3 are green. If one is picked at random, replaced, and an

sesenic [268]

Answer:

i think it is 1/100

Step-by-step explanation:

4/20^2 add all the marbles number together than put the amount of orange marbles on top of it so it is 4/20 than square it

8 0

2 years ago

EP6. Abby works at a job that starts out paying $15 per hour. Each year she continues

Artemon [7]

Answer:

$64.83.

Step-by-step explanation:

Each year the multiplier fffor her new rate will be 1.05.

So after 30 years her hourly rate will be 15 * 1.05^30

= $64.83

6 0

1 year ago