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3 years ago

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I need help on 10 please explain

1 answer:

kumpel [21]3 years ago

6 0

Lets approach this problem differently
15 gallons ....you drive ......330 miles lets divide both numbers by 15 to find out how much you can go with 1 gallon
1 gallon..... you drive.....330/15=22
you car goes 22 miles per 1 gallon
if you put 20 gallons
20*22=440 miles

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The equation y - 2 = 3(x + 1) is in point-slope

attashe74 [19]

Y-2=3x+3
Then add two
So y=3x+5
Hope this helps sorry if wrong

5 0

3 years ago

Recall that m(t) = (1/2)^t/h for radioactive decay, where h is the half-life. Suppose that a 500g sample of phosphorus-32 decays

katrin2010 [14]

The question is incomplete, here is the complete question:

Recall that m(t) = m.(1/2)^t/h for radioactive decay, where h is the half-life. Suppose that a 500 g sample of phosphorus-32 decays to 356 g over 7 days. Calculate the half life of the sample.

<u>Answer:</u> The half life of the sample of phosphorus-32 is $14.28days^{-1}$

<u>Step-by-step explanation:</u>

The equation used to calculate the half life of the sample is given as:

$m(t)=m_o(1/2)^{t/h}$

where,

m(t) = amount of sample after time 't' = 356 g

$m_o$ = initial amount of the sample = 500 g

t = time period = 7 days

h = half life of the sample = ?

Putting values in above equation, we get:

$356=500\times (\frac{1}{2})^{7/h}\\\\h=14.28days^{-1}$

Hence, the half life of the sample of phosphorus-32 is $14.28days^{-1}$

7 0

3 years ago

Find the circumference of each circle

IrinaVladis [17]

Answer:28.26

Step-by-step explanation:9 x 3.14

5 0

3 years ago

Kari is flying a kite. She releases 50 feet of string. What is the approximate difference in the height of the kite when the str

nirvana33 [79]

Sinα=h/L where h=height, L=string length...

h=Lsinα so

h(25°)=50sin25≈21.1ft

h(45°)=50sin45≈35.4ft

5 0

3 years ago

Read 2 more answers

What are the steps to find the slope of the line through the pair of points ? <br>

Artyom0805 [142]

Answer:

$\frac{-15}{-14} \\$

Step-by-step explanation:

You would do y2-y1 over x2-x1. In your equation, this would be -15-0 over -11-3, giving you -15 over -14

8 0

3 years ago