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3 years ago

So far, Rachel has burned 117.2 calories. She wants to burn a total of 300 calories. How many more calories must Rachel burn?

Mathematics

1 answer:

Wittaler [7]3 years ago

6 0

Answer:

Step-by-step explanation:

No of calories Rachael burns = 117.2

No of calories Rachael has to burn = 300

Remaining calories = 300 - 117.2 = 182.8

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If a_1=2a 1 =2 and a_n=(a_{n-1})^2-2a n =(a n−1 ) 2 −2 then find the value of a_4a 4 .

Aleks04 [339]

9514 1404 393

Answer:

Step-by-step explanation:

We assume your recursive formula is ...

$a_1=2\\a_n=a_{n-1}^2-2$

Using this to find a4, we get ...

$a_2=a_1^2-2=2^2-2=2\\a_3=a_2^2-2=2^2-2=2\\a_4=a_3^2-2=2^2-2=2\\\\\boxed{a_4=2}$

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3 years ago

Graph the line whose y-intercept is -7 and whose x-intercept is 1

vesna_86 [32]

Answer:

$y=7x -7$

Step-by-step explanation:

We are given two points, the y - intercept and the x - intercept.

The y - intercept being: ( 0, -7 )

The x - intercept being: ( 1, 0 )

The equation of a line in slope - intercept form is:

y = mx + b, where m is the slope and b is the y - intercept.

We already have the y - intercept. So far we have:

y = mx - 7

What we're missing is the slope.

To find the slope, we can use this formula:

$\frac{y_{2}-y_{1} }{x_{2}-x_{1}}$ , where $x_{2}$ and $x_{1}$ are the x - coordinates of both points and $y_{2}$ and $x_{1}$ are the y - coordinates of both points.

$m=\frac{0-(-7)}{1-0} \\\\m=\frac{7}{1}\\m=7$

We now have the missing piece, the slope, so the equation now is:

$y=7x -7$

3 0

3 years ago

Which equation represents a function?

Maurinko [17]

All the answers except C has a Vertical Line when graphed. It must pass the Vertical line test in order to be a function.

Vertical Line Test: If you can draw a vertical line anywhere on a graph so that it hits the graph in more than one spot, then the graph is NOT a function.

C.) can pass the test since it's a horizontal line.

Hope this helps!

6 0

3 years ago

Angel bought 8 oranges and 11 Apples for a total $15.22. He knows that each orange costs 0.50 and reasoned that each Apple must

Marysya12 [62]

Yes, it is fairly reasonable... if you round it..

however, if you want exact calculations, then it might not be so reasonable, because it will go over the total amount

so if you round it, then yes it is fairly reasonable

4 0

4 years ago

Read 2 more answers

(−5/6x−7/12)−(−1/3x−1/4)

Anvisha [2.4K]

Answer:

-1/6*(3x+2)

Step-by-step explanation:

subtract the fractions

5 0

3 years ago