MATHEMATICS HIGH SCHOOL

If the dimensions of a rectangle are a+3b and a−3b, what is the area of the rectangle in terms of a and b?

Answers

Answer 1
Answer: area=legnth times width
we notice this is a special case
(a+b)(a-b)=a^2-b^2

area=(a+3b)(a-3b)=a^2-9b^2

area=a^2-9b^2

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I need help on number 5

Answers

A fraction is undefined if its denominator is zero, because then it's saying
"Division by zero !" which is a definite no-no.

Can the denominator of the fraction in #5 ever be zero ?

The denominator is a quadratic polynomial.  Do you know
how to solve (a quadratic polynomial) = 0  ?

This problem is even easier than that, because it gives you some choices.
So you don't even have to solve the quadratic equation.  All you have to do
is check out the choices.
Do you see choice of 'x' values that make the denominator zero ?

Big sloppy hint:  Look at choice-E very very carefully.

Is that enough help ?

Help nott sure if im right

Answers

Kyleey, you'll need to share your work here if you want feedback on it.  Type in the problem and show the steps you have taken to solve it.

Can you help me with this problem?

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s + g = 350; /*(-3) => -3s - 3g = -1050;

3s + 5g = 1450;

=> 2g = 400 => g = 200 ( general admission tickets);
=> s = 350 - 200 => s = 150 ( student tickets);

Identify the postulate that proves the triangles are congruent.

Answers

In my opinion and as what I learned last year the correct answer is HL.

Which of the following are examples of exponential growth? Select all that applyShasta increases the amount she saves each month by 5%.

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The amount of cell phone subscribers in a small town increases by 75% each year.

The price of a stock goes up 12% each year.

Answers

The correct answer for the question that is being presented above is this one: "Shasta increases the amount she saves each month by 5%; The price of a stock goes up 12% each year; The amount of cell phone subscribers in a small town increases by 75% each year."

What is the range of the given function? {(–2, 0), (–4, –3), (2, –9), (0, 5), (–5, 7)}

Answers

range is output
(x,y)
y=mx+b aka
f(x)=somethingx

y=output
(x,range)
look at the secondn numbers

range={0,-3,-9,5,7}
arrange them in increaseing order (for nicity)
range={-9,-3,0,5,7}
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