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never [62]
3 years ago
6

sally earns $15 per hour waiting tables for 12 hours each week at a local cafe but on Sunday she works for 4 hours and is paid t

ime and a half. what is her gross pay for 16 hours of work?
Mathematics
1 answer:
steposvetlana [31]3 years ago
7 0

Answer:

12*15 + 4*15*1.5

180+90 = $270

Step-by-step explanation:

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The volume of a conical pile of sand is increasing at a rate of 300πcm3/sec
lesya [120]
So using the formula for the volume of a cone:
r^2pi x h/3

The height is always 4 times the radius, so:
h=4r

Now putting the values into the original formula:

r^2pi x 4r/3

Now to see how much the radius increases per second:

r^2pi x 4r/3=300pi

r^2 x 4r/3=300

r^2 x 4r=900

r^2 x r=225

r^3=225

The radius increases by the cubic square root of 225 cm per second.

f(s)= 225^1/3 cm
7 0
2 years ago
Write an equivalent<br> expression<br> - 4(5 + 7g)
gregori [183]
Answer:
-4(5 + 7g) = -28g -20
4 0
3 years ago
Roxanne has $80 in a savings account. The interest rate is 10%, compounded annually. To the nearest cent, how much will she have
finlep [7]
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3 0
3 years ago
Ivan has $1098 worth of $12 and $14 stock shares. The number of $14 shares is seven more than
Dafna1 [17]

Answer:

Number of 12$ Shares? 25

Number of 14$ Shares? 57

Step-by-step explanation:

Let x = number of $12 shares.

Let y = number of $14 shares.

"Ivan has $1098 worth of $12 and $14 stock shares."
12x + 14y = 1098

The number of $14 shares is seven more than twice the number of $12 shares.

y = 2x + 7

We have a system of equations.

12x + 14y = 1098

y = 2x + 7

We can use the substitution method since the second equation is already solved for y. Substitute 2x + 7 for y in the first equation.

12x + 14(2x + 7) = 1098

12x + 28x + 98 = 1098

40x = 1000

x = 25

There are 25 $12 shares.

y = 2x + 7 = 2(25) + 7 = 57

There are 57 $14 shares.

Check:

25 × $12 + 57 × $1`4 = $300 + $798 = $1098

The total value is correct, so the answer is correct.

4 0
2 years ago
5x2 – 15x – 20. factorise
hoa [83]

Answer:

5(x−1)(x+4)? i think

Step-by-step explanation:

7 0
3 years ago
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