3 years ago

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. A= 1÷2ab please!!!

Anvisha [2.4K]

Answer:

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

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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) = 3+(-5) = 4+6= -5-9= -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

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