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3 years ago

Mrs. Cristobal drives ⅔ mile in ⅕ hour. How many miles can she drive in 1 hour?

Mathematics

2 answers:

Arada [10]3 years ago

4 0

Answer:

10/3

Step-by-step explanation:

Multiply 2/3 by 5 because 1/5*5=1 hr

2/3*5=10/3

murzikaleks [220]3 years ago

3 0

Answer:

1/3 in one hour pls mark brainliest

Step-by-step explanation:

well all you have to do is 2/3 times 5 and get 3 1/3 in one hour

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Tewanda read 2,000 word news article in 8 minutes. How fast did she read the news article? Explain how you found your answer.

Blababa [14]

Answer:

She read 250 words per minute.

Step-by-step explanation:

Simply divide the words read by the time took to read that amount = (2000/8) words per minute = 250 words per minute.

Hope this helped!

6 0

3 years ago

Write an exponential model given the points ( 7, 12 ) and ( 8, 25 ). Round to the nearest hundredth.

inna [77]

Answer:

The exponential model is $y = 0.07\cdot e^{0.73\cdot x}$ .

Step-by-step explanation:

The exponential model can be modelled by the following mathematical expression:

$y = A\cdot e^{B\cdot x}$ (1)

Where:

$x$ - Independent variable.

$y$ - Dependent variable.

$A, B$ - Coefficients.

If we know that $(x_{1}, y_{1}) = (7,12)$ and $(x_{2}, y_{2}) = (8,25)$ , then we get the following system of equations:

$A\cdot e^{7\cdot B} = 12$ (2)

$A\cdot e^{8\cdot B} = 25$ (3)

If we divide (3) by (2), we calculate the value of $B$ :

$e^{B}=\frac{25}{12}$

$B = \ln \frac{25}{12}$

$B \approx 0.734$

And by (2), we determine the value of $A$ :

$A = 12\cdot e^{-7\cdot B}$

$A = 0.0704$

The exponential model is $y = 0.07\cdot e^{0.73\cdot x}$ .

4 0

3 years ago

How many seconds are in 5 minutes

grigory [225]

There are 300 seconds in 5 minutes

3 0

3 years ago

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What is the area of the triangle (-5,-2) (3,-1)

max2010maxim [7]

idk

Step-by-step explanation:

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4 years ago

Amy cut 32 feet of chain into pieces that were each ft long. How many of these pieces did Amy have after cutting the chain?

hammer [34]

If they are all a foot long then she should have 32 pieces of Chain

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3 years ago

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