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harkovskaia [24]
3 years ago
5

Given the function f(x) = 3 x - 21 + 6, for what values of x is f(x) = 18?

Mathematics
2 answers:
weqwewe [10]3 years ago
5 0
18=3x-21+6
18=3x-15
33=3x
X=11
IrinaK [193]3 years ago
4 0

Answer:

X=2

If 21+6=27 then subtract what f(x) is (which is 18) from the 27. 27-18=6 then 3x2=6 so therefore your answer is 2. Hope this helps!!

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The value of the surface area (in square centimeters) of the cone is equal to the value of the volume (in cubic centimeters) of
Dovator [93]

Answer:

The height of the cone is 10.9 cm

Step-by-step explanation:

step 1

Find the height of the cone

Applying the Pythagoras Theorem

12^{2}=5^{2}+h^{2}

144=25+h^{2}

h^{2}=144-25

h^{2}=119

h=10.9\ cm

therefore

The height of the cone is 10.9 cm

6 0
3 years ago
the daily low temperature readings for a five-day period were as followed -13, -5 ,6, -7, 9 find the average low temperature for
vivado [14]
First add the numbers together:
-13+(-5),6,(-7),9=-10
Then divide that number by the total # of numbers, which is 5
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The average low temperature is -2.

...which is 6th grade stuff, so I am having a hard time believing, that you are in college and/or are having problems with this.
4 0
3 years ago
1. A single scoop ice cream cone is made up of a cone filled with ice cream and a half
tatiyna

Answer:

2.515

Step-by-step explanation:

1. First you add the equation for a cone and a half sphere

(1/3*pi*r^2*h)+(1/2*4/3*pi*r^3)

2. You replace h with 2*r2 because height is 2*Diameter

(1/3*pi*r^2*r2)+(1/2*4/3*pi*r^3)

3. You make the equation equal 100

(1/3*pi*r^2*r2)+(1/2*4/3*pi*r^3)=100

4. Solve for

r=2.515

8 0
3 years ago
A rectangular laboratory tray is 3/5 feet by 7/6 feet. What is the area
Alexus [3.1K]
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6 0
3 years ago
Rewrite f(x) into vertex form by completing the square f(x)=−x2+8x+9​
GalinKa [24]

Answer:

vertex  = ( 4  ,  25 )

Step-by-step explanation:

given a parabola in  standard form  y =  a x 2 + b x + c x ; a ≠ 0

then the x-coordinate of the vertex is

X vertex=-b/2a

y=-x2+8x+9 with a=-1 b=8 c=9

X vertex= -8/-2=4

substitute the value on the equation

Y vertex = -(4)squared+8(4)+9=25

3 0
3 years ago
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