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solmaris [256]
3 years ago
9

You receive X dollars an hour for babysitting you babysit three hours on Friday and five hours on Saturday you receive $40 for t

he two days write and solve the equation to find how much you earn per hour
Mathematics
1 answer:
malfutka [58]3 years ago
6 0

5 hours + 3 hours = 8 hours

8x = $40. Divide each side by 8.

x = $6.

You earn $6 / hour

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The doctor has told Cal O'Ree that during his ten weeks of working out at the gym, he can expect each week's weight loss to be $
Sergio [31]

Answer:

220.67 pounds

Step-by-step explanation:

This problem can be treated as a compounded interest with a weekly rate of -1%. Cal's weight after 'n' weeks at a 1% loss rate per week is described by the following expression:

W = 244*(1-0.01)^n

For n = 10 weeks, Cal's weight is:

W = 244*(1-0.01)^{10}\\W=220.67\ pounds

He expects to weigh 220.67 pounds at the end of the ten weeks.

6 0
3 years ago
Round 200.8 to the nearest whole dollar
creativ13 [48]

Answer:

201

Step-by-step explanation:

1,2,3,4 all round down

5,6,7,8,9 all round up

- hope this helps :)

4 0
3 years ago
Tamara borrowed $6,000 at 6% and ended up paying $900 in simple interest.For how long was the loan?
Elden [556K]

Answer:

For how long was the loan? For 6 1/2month

Step-by-step explanation:

Loan % int.anual % int.peri. Interest Loan+interest M.Payme N

6000 6%             0,0089  53,531 6053,53          900 6 1/2month.

3 0
3 years ago
Find a formula for the described function. an open rectangular box with volume 9 m3 has a square base. express the surface area
Maru [420]

Let

x--------> the length side of the square base

h--------> the height of the box

we know that

<u>the volume of the box is equal to</u>

V=x^{2} *h\\ V=9\ m^{3}

so

x^{2} *h=9\\\\h=\frac{9}{x^{2} }

<u>the surface area of the box is equal to</u>

SA=area\ of\ the\ base+perimeter\ of\ base*height (remember that the box is open)

area of the base=(x^{2})\ m^{2}

Perimeter of the base=(4*x)\ m

height=(h) m

h=\frac{9}{x^{2}}

substitute

SA=x^{2} +4*x*h\\ \\ \\ SA=x^{2} +4*x*\frac{9}{x^{2} } \\ \\ SA=x^{2} +\frac{36}{x}

we know that

the value of x can not be negative and the denominator can not be zero

therefore

<u>the answer is</u>

the domain of  SA is x> 0

the domain is the interval-------------> (0,∞)

6 0
3 years ago
What is the x-intercepts of the graph of y = 12x-5x-2
hammer [34]
Y = 12x - 5x - 2

first simplify the equation by subtracting like terms (in this case):

12x - 5x = 7x

y = 7x - 2

Since you are finding the x, you must isolate the x. Do the opposite of PEMDAS.(Note: because there is a equal sign, what you do to one side, you do to the other)

y = 7x - 2

y (+2) = 7x - 2 (+2)
y + 2 = 7x
(y + 2)/7 = 7x/7

x = (y + 2)/7


x = (y + 2)/7 is your answer

hope this helps
8 0
3 years ago
Read 2 more answers
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