3 years ago

A bag contains 5 green marbles and 8 blue marbles. A dice is rolled, then a marble is chosen at random from the bag .

Mathematics

1 answer:

kolezko [41]3 years ago

3 0

What is the question?

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Please help me answer this question.

Alex787 [66]

1. Change x = 4t into x = 3t

$4t\cdot\frac{3}{4}=3t$ so

$y=(\frac{3}{4}t)^2-1=\frac{9}{16}t^2-1$

Answer A and D are wrong.

2. Change x = 4t into x = 2t

$4t\cdot\frac{1}{2}=2t$ and

$y=(\frac{1}{2}t)^2-1=\frac{t^2}{4}-1$

Answer b is correct.

3. Change x = 4t into x = 8t

$4t\cdot2=8t$ and

$y=(2t)^2-1=4t^2-1$

Answer C. is correct, E. is wrong.

7 0

3 years ago

Steven works at the Pi Day food truck and he gets paid $9 per hour x. If 1 point

vitfil [10]

P(x) =9x +30

the tips are a flat rate so it’s a constant 30 while the 9 per hour is dependent on the hours worked which is why it is attached to x as a coefficient

8 0

3 years ago

Winnie needs to spend $120 on two kinds of fancy cakes:

Ainat [17]

Answer:

Winnie needs to buy 6 slices of Coffee cake.

Step-by-step explanation:

12 * 5= $60 (chocolate cake)

120 - 60= 60

since we know the coffee cake costs $10(per slice) we do:

60/ $10= 6 slices of coffee cake.

3 0

3 years ago

Solve for x 2cos^2x-3cosx+1=0

marishachu [46]

<span> x= Pi, x = 2pi/3, x = 4pi/3
That is the answer</span>

8 0

3 years ago

A recipe that will make 3 pies calls for 7 cups of flour. Find how many pies can be made with 28 cups of flour.

pashok25 [27]

Answer:

My answer was wrong sorry

6 0

3 years ago