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3 years ago

9

in class,12 students like to play vollyboll. if 30% of the students in the class like to play volleyball,how many students are i

n the class?

1 answer:

iren [92.7K]3 years ago

6 0

Answer:

Hope this helps! If you have any questions feel free to ask.

Step-by-step explanation:

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Help me on this algebraic problem and please show work. (10 points) Thanks! :)

jonny [76]

4 - 2(x + 3) = 5
4 - 2x - 6 = 5
-2x - 2 = 5
-2x = 5 + 2
-2x = 7
x = -7/2 or = -3 1/2

5 0

3 years ago

Read 2 more answers

Please help me. will mark brainliest. what is the answer?

VARVARA [1.3K]

Answer:

A ) y=-1/2x+2

Step-by-step explanation:

since the equation is y=2x+4 and the points are (-2,3) and the line is perpendicular to that equation

y=-1/2x+b

enter the point (-2,3)

3=1+b

b=2

so

y=-1/2x+2

3 0

3 years ago

How would I solve this Rational Equation? <br><br>Solve for all values of x.

Nesterboy [21]

9514 1404 393

Answer:

x = 4

Step-by-step explanation:

I like to put these in the form f(x) = 0. We can do that by subtracting the right side. Common factors can be cancelled from numerator and denominator, provided they are not zero.

$\dfrac{7}{x+3}+\dfrac{3}{x-3}-\dfrac{x}{x-3}=0\\\\ \dfrac{7(x-3)+(x+3)(3-x)}{(x+3)(x-3)}=0\\\\\dfrac{(x-3)(4-x)}{(x-3)(x+3)}=0\\\\ \dfrac{4-x}{x+3}=0\qquad x\ne3\\\\x=4 \qquad\text{equate the numerator to zero, add $x$}$

_____

If you leave the numerator as (x-3)(4-x), then there are two values of x that make it zero. Because x=3 makes the equation "undefined", it cannot be considered to be a solution.

4 0

3 years ago

A ball is thrown into the air. The height h, in feet, of the ball after x seconds is given by the function h = −16(x − 2)2 + 72.

Annette [7]

Answer:

Step-by-step explanation:

h = −16(x − 2)² + 72

= −16((x − 2)(x − 2)) + 72 expand the square (x - 2)² = (x - 2)(x - x)

= -16 ((x)(x) + (x)(-2) + (-2)(x) + (-2)(-2)) + 72

= -16 (x² + (-2x) + (-2x) + (4) ) + 72

= -16 (x² + (-4x) + (4) ) + 72

= -16 (x² - 4x + 4 ) + 72

= (-16)(x²) + (-16)(-4x) +(-16)(4) + 72

= -16x² + 64x - 64 + 72

= -16x² + 64x + 8 My guess is D ; 72 ???

I have no clue what the ; 72 means after the given answer. It must be a standard form thing I never learned.

4 0

3 years ago

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HELP ME PLEASEEEEEE ASAPPPPPP

krok68 [10]

your answer is 10 1/8.

I hope this helps

4 0

3 years ago