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3 years ago

F(9) if f(x) = x + 13

Mathematics

1 answer:

Firlakuza [10]3 years ago

3 0

Answer:

x=(-4)

Step-by-step explanation:

You simply replace f(x) with f(9)

9 = x+13

(-4)=x

x=(-4)

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you were 20 inches tall at birth, and 48 inches tall on your 8th birthday. Create a linear equation to represent this equation.

Marianna [84]

Answer:

Part a) $y=3.5x+20$

Part b) $90\ in$

Step-by-step explanation:

Part a) Create a linear equation to represent this situation

Let

x -----> the number of years

y ----> the height in inches

we have the points

(020) ----> at birth the height was 20 inches

(8,48) ---> 8th birthday the height was 48 inches

step 1

Find the linear equation in slope intercept form

$y=mx+b$

where

m is the slope

b is the y-coordinate of the y-intercept

Find the slope m

$m=(48-20)/(8-0)\\m=3.5\ in/year$

Find the value of b

$b=20\ in$ ----> the point (0,20) is the y-intercept

substitute

$y=3.5x+20$

Part b) According to your equation, how tall will you be at age 20?

For x=20 years

substitute the value of x in the linear equation and solve for y

$y=3.5(20)+20$

$y=90\ in$

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3 years ago

One of the fastest recorded speeds of a cheetah is 26.8 m/s. Approximately, what is this speed in kilo meters per hour?

dangina [55]

96.48 kilometers per hour

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4 years ago

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Slope=2/3;y-intercept=-1 write the linear equation in slope -intercept form

Mnenie [13.5K]

Answer:

$\large\boxed{y=\dfrac{2}{3}x-1}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

We have the slope $\bold{m=\dfrac{2}{3}}$ , and the y-intercept b = -1.

Substitute:

$y=\dfrac{2}{3}x-1$

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The box plot and histogram show the number of minutes sixth-grade students spent reading the previous night.Which statements bes

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Answer:

2,3,and 5

Step-by-step explanation:

took the test

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4 years ago

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There are 87 green balls and 41 red balls in a bag. If one is randomly selected, what is the probability that it will be a green

garri49 [273]

Number of green balls = 87

Number of red balls = 41

So total number of balls = 128

Probability formula = number of events / number of possible outcomes.

So, the probability that a ball randomly selected will be a green ball will be

$\frac{87}{87+41}$

equals 0.6796875 converting to nearest hundredth as 0.68

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3 years ago

F(9) if f(x) = x + 13​

F(9) if f(x) = x + 13