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MakcuM [25]
3 years ago
5

Maren walks 8/5 miles in 24 minutes at a steady pace. How long does it take her to walk 2 miles

Mathematics
1 answer:
wariber [46]3 years ago
4 0
Okay, this may seem complex for some but its actually is simple!

However, we will have to use double fractions which a lot of people dont like

So we have (8/5)/24 for our units.  However, we need to find 2 miles.  8/5 is a bit confusing and hard to represent if we are converting to integers.

But, theres a trick.  We need 2 miles so we can actually make 2 = 10/5.

We now have (8/5)/24 = (10/5)/x

Using cross-multiplication, we can solve for x!

Hope this helps
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fresh+cranberries+have+99%+of+water.+partially+dried+cranberries+have+98%+of+water.+jack+picked+100+pounds+of+cranberries.+how+m
Mnenie [13.5K]

Answer:

  50 lb

Step-by-step explanation:

Before drying, the cranberries have ...

  (100% -99%)(100 lb) = 1 lb

of "meat."

After drying, that represents (100% -98%) = 2% of the total weight. Then the total weight is ...

  1 lb = 2%·x

  x = (1 lb)/0.02 = 50 lb

The dried cranberries will weigh 50 lb.

8 0
2 years ago
Which graph represents a function?<br> X
gayaneshka [121]
If you added more context then I would probably answer your question
5 0
3 years ago
What are the vertex and xintercepts of the graph of the function below?<br> y=(x + 4)(x-2)
erik [133]

Yo sup??

y=(x+4)(x-2)

to find the x intercept put y=0

0=(x+4)(x-2)

so either x=-4 or x=2

Therefore the graph intersects the x axis at -4 and 2

Lenght of x intercept=|-4-2|=6 units

y=(x+4)(x-2)

=x^2+2x-8

This is an upward opening parabola

To find the coordinates of the vertex we can apply the formula

(-b/2a,-D/4a)

b=2

a=1

D=b^2-4ac

=4-4*1*(-8)

=4+32=36

Vertex=(-2/2*1,-36/4*1)

=(-1,-9)

Hope this helps.

3 0
3 years ago
X is normally distributed with mean 250 and standard deviation 40. what value of x does only the top 15% exceed?
lubasha [3.4K]
The top 15% (85th percentile) is the cutoff value x such that

\mathbb P(X\le x)=\mathbb P\left(\dfrac{X-250}{40}\le\dfrac{x-250}{40}\right)=\mathbb P(Z\le z)=0.85

where z is the corresponding cutoff for the standardized normal distribution. We have z\approx1.0364, and so

\dfrac{x-250}{40}=z\implies x\approx291.456
3 0
3 years ago
Evaluate the expression for x = 3, y=1/3 , and z = 5. 12x−3y4x−z/
Nesterboy [21]
The answer is 19 :)
8 0
3 years ago
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