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3 years ago

nancy and bill collect coins.nancy has x coins. Bill has 9 coins fewer than three times the number of coins nancy has

Mathematics

1 answer:

TEA [102]3 years ago

7 0

Answer:

Bill = 3x-9

Step-by-step explanation:

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Brand a cereal contains 10 cups of cereal. how many more cups of cereal are in brand b cereal

sladkih [1.3K]

As I don't know enough info I will say how to figure it out,
so you get the amount of cereal in a [eg 40] then you divide it by 10 you get [4] each cup is worth [4] then you divide b [eg 56] by [4] giving you [14] so you get [4]
more cups of cereal in b.
i am presuming thats the info you get in the question and if it is that is how you answer it if not well its your fault for not providing enough info

7 0

4 years ago

Read 2 more answers

A teenager who is 5 feet tall throws an object into the air. The quadratic function LaTeX: f\left(x\right)=-16x^2+64x+5f ( x ) =

tia_tia [17]

Answer:

At approximately x = 0.08 and x = 3.92.

Step-by-step explanation:

The height of the ball is modeled by the function:

$f(x)=-16x^2+64x+5$

Where f(x) is the height after x seconds.

We want to determine the time(s) when the ball is 10 feet in the air.

Therefore, we will set the function equal to 10 and solve for x:

$10=-16x^2+64x+5$

Subtracting 10 from both sides:

$-16x^2+64x-5=0$

For simplicity, divide both sides by -1:

$16x^2-64x+5=0$

We will use the quadratic formula. In this case a = 16, b = -64, and c = 5. Therefore:

$\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Substitute:

$\displaystyle x=\frac{-(-64)\pm\sqrt{(-64)^2-4(16)(5)}}{2(16)}$

Evaluate:

$\displaystyle x=\frac{64\pm\sqrt{3776}}{32}$

Simplify the square root:

$\sqrt{3776}=\sqrt{64\cdot 59}=8\sqrt{59}$

Therefore:

$\displaystyle x=\frac{64\pm8\sqrt{59}}{32}$

Simplify:

$\displaystyle x=\frac{8\pm\sqrt{59}}{4}$

Approximate:

$\displaystyle x=\frac{8+\sqrt{59}}{4}\approx 3.92\text{ and } x=\frac{8-\sqrt{59}}{4}\approx0.08$

Therefore, the ball will reach a height of 10 feet at approximately x = 0.08 and x = 3.92.

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3 years ago

How do you round 5,389,919 to the nearest 10,000?

IceJOKER [234]

You underline the digit in the 10,000 place circle the digit after it if the digit is less than5 leave it as it is if it is more and one. The answer is 5,39900 just in case you didn't understand what I said:)

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3 years ago

6) Andy is going kyacking. He has $341 to spend on parking and paddles. Parking costs $30 and paddles cost $45. 20 per person. D

telo118 [61]

6 people can go kayaking, use the equation 341=30+45.20x.

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3 years ago

Identify a pattern in each list of numbers. Then use this pattern to find the next number.

Galina-37 [17]

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3 years ago