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2 years ago

Math Help? 18 Points

Mathematics

2 answers:

Semenov [28]2 years ago

7 0

The answer is $45 for 9

bogdanovich [222]2 years ago

5 0

All of them is multiply by 7 but it say it is discount which means 7 minus 2 is 5 and 5 times 9 is 45

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A curve is given by y=(x-a)√(x-b) for x≥b, where a and b are constants, cuts the x axis at A where x=b+1. Show that the gradient

ankoles [38]

<u>Answer:</u>

A curve is given by y=(x-a)√(x-b) for x≥b. The gradient of the curve at A is 1.

<u>Solution:</u>

We need to show that the gradient of the curve at A is 1

Here given that ,

$y=(x-a) \sqrt{(x-b)}$ --- equation 1

Also, according to question at point A (b+1,0)

So curve at point A will, put the value of x and y

$0=(b+1-a) \sqrt{(b+1-b)}$

0=b+1-c --- equation 2

According to multiple rule of Differentiation,

$y^{\prime}=u^{\prime} y+y^{\prime} u$

so, we get

${u}^{\prime}=1$

$v^{\prime}=\frac{1}{2} \sqrt{(x-b)}$

$y^{\prime}=1 \times \sqrt{(x-b)}+(x-a) \times \frac{1}{2} \sqrt{(x-b)}$

By putting value of point A and putting value of eq 2 we get

$y^{\prime}=\sqrt{(b+1-b)}+(b+1-a) \times \frac{1}{2} \sqrt{(b+1-b)}$

$y^{\prime}=\frac{d y}{d x}=1$

Hence proved that the gradient of the curve at A is 1.

7 0

2 years ago

Martin was going to the market to buy apples. The price for apples is $3.50 times the number of apples bought plus one-dollar ta

boyakko [2]

A(n) = 3.50n + 1.00

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Let n = 27

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Karolina [17]

The correct answer is 45

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laiz [17]

Heyyyyy, lets gather the required information....
Summer = 20 movies Fall = 5 , our equation would be:

F = S/4*1

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