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Ierofanga [76]
2 years ago
5

By factoring, identify the zeros of the quadratic function f (x) = x²-9x-22

Mathematics
1 answer:
vovikov84 [41]2 years ago
7 0

Answer:

x= -2, x= +11

Step-by-step explanation:

I hope this is right!

To factorise, we need two numbers that add to make -9 and multiply together to make -22.

2 - 11 works, so we put it in the brackets in this order.

(x + 2) (x - 11)

so x + 2 = 0 and x - 11 =0

but we could also simplify this to say that x could be either -2 or + 11.

I hope this helps.

Have a lovely day.

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Y=5x+4 and 3x+2y=20 by using elimination​
nikklg [1K]

Answer:

Step-by-step explanation:

 y = 5x + 4

-5x + y = 4 ----------------------(i)

3x + 2y = 20 --------------------(ii)

Multiply equation (i) by (-2)

(i)* (-2)     10x - 2y = -8

(ii)            <u>3x   + 2y = 20</u>    { Now add this two equations}

              13x           = 12      { -2y and 2y got eliminated}

                          x = 12/13

Plug in value of x in (i)

-5*12/13  + y = 4

-60/13 + y = 4

y = 4 + 60/13

y=\frac{4*13}{1*13}+\frac{60}{13}\\\\=\frac{52}{13}+\frac{60}{13}\\\\=\frac{112}{13}\\\\=8\frac{8}{13}y=

5 0
3 years ago
PLEASE ANSWER ASAP!!!! (and actually answer the question, no begging for "brainliest")
Ksivusya [100]

∑ Hey,  hughesbillyrobert ⊃

Answer:

<em>y = 0.75x + 9</em>

Step-by-step explanation:

<u><em>Given:</em></u>

<em>A mother gives birth to a 9 pound baby. Every 4 months, the baby gains 3 pounds. If x is the age of the baby in months, then y is the weight of the baby in pounds. Find an equation of a line in the form y = mx + b that describes the baby's weight.</em>

<em />

<em>y = ________________</em>

<em />

<u><em>Solve:</em></u>

<em>For the equation of the line of the form y = mx + b:</em>

<em>'m' which is the slope of the line </em>

<em>' b' which is the y-intercept  and that is the value of y when x is equal to zero. </em>

<em>The slope is the rate of change of y per change in x. </em>

<em>"y" would represent the dependent variable which is the weight of the baby and "x" represents the independent variable which is the number of months or the age of the baby in months. </em>

<em />

<em>At birth represents the beginning of time for the baby.  Lets call this month zero.  Hence, </em>

<em>x = 0             y = 9       ⇒  at birth</em>

<em> </em>

<em>x = 4             y = 12</em>

<em> </em>

<em>x = 8             y = 15</em>

<em> </em>

<em>x = 12             y = 18</em>

<em />

<em>Now we find the slope between each point.  Since the common difference of y is 3 and the common difference in x is 4, the slope will be</em>

<em>Slope = y/x = 3/4</em>

<em>Therefore, the equation of the line that represents this relationship is</em>

<em> </em>

<em>y = (3 / 4)x + 9</em>

<em>y = 0.75x + 9</em>

<em />

<u><em>xcookiex12</em></u>

<u><em></em></u>

<em>8/24/2022</em>

8 0
2 years ago
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One container has 28 kilograms of flour and another has 4 kilograms. How many kilograms must be taken from one container, so eac
Montano1993 [528]

Answer:

24 kg needs to be taken out

Step-by-step explanation:

28-4

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3 of 10<br>What is the 5th equivalent fraction to 2/7?​
postnew [5]

Answer:

2 × 7 =14

Step-by-step explanation:

step by step that is the answer

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Using the two functions listed below, insert numbers in place of the letters a, b, c, and d so that f(x) and g(x) are inverses.
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I hope this helps you

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