3 years ago

What is the axis of symmetry of the function f(x)= -(x + 9)(x - 21)

Mathematics

1 answer:

neonofarm [45]3 years ago

8 0

The axis of symmetry of the funtion f(x)=-(x+9)(x-21) is 6.
The ansswer is 6.

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Solve the following system of equations<br> 3X +5Y=16<br> 2X+7Y=7

RoseWind [281]

Answer:

equals 56y+3x

Step-by-step explanation:

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3 years ago

Peaches are being sold for 2$ per pound. If x represents the number of pounds of peaches bought and y represents the total cost

ladessa [460]

3x-x+2=4, That should be your answer if that is what your looking for

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4 years ago

What’s the slope of C=50t+100

balandron [24]

Answer:

Explanation:

This equation is in y = mx+b form.

The m is the slope and the b is the y intercept. So, 50 is the slope and 100 is the y-intercept.

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3 years ago

Read 2 more answers

The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h. A=(a+b)/2 h Solve for a.

yKpoI14uk [10]

Answer:

$a=\frac{2A}{h}-b$

Step-by-step explanation:

Hello, I think I can help you with this.

According to the information provided in the problem, the area of a trapezoid is given by

$A=\frac{a+b}{2} *h\\$

Step 1

solve for a, it means isolate a

$A=\frac{a+b}{2} *h\\divide\ both\ sides\ by\ h\\\\\frac{A}{h}= \frac{\frac{a+b}{2} *h}{h} \\\frac{A}{h}=\frac{a+b}{2}\\\\Now, multiply\ both\ sides\ by\ two\\\\ 2*\frac{A}{h}=2*\frac{a+b}{2}\\2*\frac{A}{h}=a+b\\\frac{2A}{h}=a+b\\\\subtract\ b\ for\ both\ sides\\\frac{2A}{h}-b=a+b-b\\a=\frac{2A}{h}-b$

Have a good day.

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3 years ago

6. Solve the the following system of equations: 4y+2x=14 2y+2x=10

Inessa05 [86]

4y+2x=14 ==> multiply this 1st equation by (-1) => -4y-2x=-14
Now add it up to the 2nd equation
-4y-2x=-14
2y+2x=10
-------------- And now add them up
-2y +0x=-4
==> -2y=-4==> 2y = 4 & y=2
Last step: plug y into any equation & you will find x=3

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4 years ago