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Murrr4er [49]
3 years ago
14

To the nearest tenth percent, how many students played for exactly 4 hours?

Mathematics
1 answer:
Pie3 years ago
6 0
How many students were there
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(a) Solve the following formula for b.<br>A= 1÷2ab please!!!<br>​
Anvisha [2.4K]

Answer:

2

Step-by-step explanation:

a = 1/2ab

~Divide 1/2a to both sides

2 = b

Best of Luck!

3 0
3 years ago
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Simplify (3x+3)(x-4)=?
Novosadov [1.4K]
(3x +3) (x - 4)
3x(x - 4) + 3(x - 4)
3x^2 - 12x + 3x - 12
3x^2 - 9x - 12
3 0
4 years ago
what �is the equation of a line that is perpendicular to the line  y = − 2 5 x − 5 y = - 2 5 x - 5 and passes thr
gladu [14]

Answer:

y=\frac{1}{25}x-\frac{31}{25}

Step-by-step explanation:

y=-25x-5

You can get the gradient of the line perpendicular to this as you know the products of their gradients will be -1.

-25*m_{perpendicular}=-1\\m_{perpendicular}=\frac{1}{25}

We have a gradient, and a point (6, 1), so we can now substitute our known values into the line equation.

(y-y_0)=m(x-x_0)

y-1=\frac{1}{25} (x-6)

Rearrange for y and collect terms.

y=\frac{1}{25}x-\frac{6}{25}-1\\\\y=\frac{1}{25}x-\frac{31}{25}

8 0
4 years ago
Marcy bought a total of 20 years books and CDs during a yard sale for a total of $54.50 cents. If books cost $1.50 each and CDs
Olenka [21]

Answer:

x + y = 20

1.5x + 5y = 54.50

Solve the equations and get: x = 13 ∧ y = 7

Marcy bought 13 books and 7 CDs.

6 0
4 years ago
-4-(3) = <br>3+(-5) = <br>4+6= <br>-5-9= <br>-4+(-9) =​
Paha777 [63]

Step-by-step explanation:

-4-(3)=-7

step two

3+(-5)=-2

step three

4+6=10

step four

-5-9=-14

step five

-4+(-9)=-13

6 0
2 years ago
Read 2 more answers
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