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2 years ago

HELP PLEASE KHAN ACADAMY

Mathematics

1 answer:

pychu [463]2 years ago

4 0

Answer:

-45

Step-by-step explanation:

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If y=3x +2 find the value of y when x =-2 I don't get it what's the answer If homework due tomorrow

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$3\cdot(-2)+2=-6+2=-4$

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3 years ago

What else would need to be congruent to show that ABC DEF by SAS?A.C FB. C. D.A D

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3 years ago

A bookstore sells textbooks for $70 each and notebooks for $5 each. The bookstore would like to sell $805 in merchandise by the

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Answer:

70x + 5y = 805

Step-by-step explanation:

Textbooks = X

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2 years ago

Write a polynomial with the zeros equaling to -1,1,8

Andreyy89

Answer:x³-8x²-x+8

Step-by-step explanation:

x are equal to -1,1,8 respectively

to form the polynomials just simply use this method put (x-)to the given numbers that are zeros of the polynomials

(x-(-))(x-1)(x-8)

(x+1)(x-1)(x-8) →(x+1)(x-1) are diff. of two squares (x²-1)

(x²-1)(x-8)

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3 years ago

(4x + 17)<br> What is the measure of AC ?<br> Enter your answer in the box.<br> (4x – 3.5)

Natasha2012 [34]

Answer: $AC=41\°$

Step-by-step explanation:

<h3> The complete exercise is attached.</h3>

For this exercise it is important to remember that, by definition, if an angle formed by two intersecting chords has its vertex on a circle, this is called an "Inscribed angle".

The following formula is used to calculate the measure of an Inscribed angle:

$Inscribed\ angle = \frac{1}{2}\ Intercepted\ Arc$

You can identify in the figure that:

$Inscribed\ angle=ABC=(4x -3.5)\\\\Intercepted\ Arc=AC=(4x + 17)$

Then you can substitute values into the formula and solve for "x":

$(4x -3.5)= \frac{1}{2}(4x + 17)\\\\8x-7=4x+17\\\\4x=24\\\\x=6$

Then, AC is:

$AC=(4(6)+ 17)\\\\AC=24+17\\\\AC=41\°$

3 0

3 years ago