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2 years ago

12

A bag contains 150 marbles. Some are blue, and the rest are white. There are 21 blue marbles for every 4 white marbles. How many

blue marbles are in the bag?

2 answers:

daser333 [38]2 years ago

8 0

Answer:

171

Step-by-step explanation:

becuse 21+21+21+21

ycow [4]2 years ago

6 0

Answer:

are you sure that you have the question right? because this is not do able unless fractions are allowed.

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Mandarinka [93]

Answer:

Terminating goes to 3

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2 years ago

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Find an expression equivalent to the one shown below.

liberstina [14]

Answer:

I believe it would be A. 1

Step-by-step explanation:

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3 years ago

Which correctly combines like terms in the following expression? (8th Math Middle School)

fiasKO [112]

Answer:

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Step-by-step explanation:

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1 year ago

A robotic machine fills containers with an acid solution at the rate of 50 + 5 t milliliters (mL) per second, where t is in seco

Alika [10]

Answer:

12,000

Step-by-step explanation:

The machine fills the containers at a rate of 50+5t milliliters (mL) per second.

Therefore, the rate of change of the number of containers, N is:

$\dfrac{dN}{dt}=50+5t, 0\leq t\leq 60$

$dN=(50+5t)dt\\$Taking integrals of both sides\\\int dN=\int (50+5t)dt\\N(t)=50t+\frac{5t^2}{2}+C $(C a constant of integration)\\\\When t=0, , No containers are filled, therefore:$ N(t)=0\\0=50(0)+\frac{5(0)^2}{2}+C\\C=0\\$Therefore, N(t)=50t+2.5t^2$

When t=60 seconds

$N(60)=50(60)+2.5(60)^2\\N(60)=12000$ mL$

Therefore, 12,000 milliliters of acid solution are put into a container in 60 seconds.

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2 years ago

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Maurinko [17]

Answer:

N

Step-by-step explanation:

the first 3 is the x value, or the horizontal line value, and the second 3 is the y value, or the vertical line value.

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2 years ago

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