evaluate f(3) for the function f(x)= 15x^2 -x+20
Answer:
[tex] \huge \boxed{f(15) = 152 }[/tex]
Step-by-step explanation:
[tex]f(x) = 15 {x}^{2} - x + 20[/tex]
To find f(3) , substitute the value of x that's 3 into f(x). That is for every x in f(x) replace it with 3.
We have
[tex]f(15) = 15( {3})^{2} - 3 + 20 \\ \: \: = 15(9) + 17 \\ = 135 + 17 \: \\ = 152 \: \: \: \: \: \: \: \: \: \: [/tex]
We have the final answer as
[tex]f(15) = 152 [/tex]
Hope this helps you
I need one more square that’s not linked
Answer:
19
Step-by-step explanation:
answer :)
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show your work if you can will give brainliest to best answer
Answer:
2: x=6
3: x=5
Step-by-step explanation:
Question 1 is answered in the picture, but the answer is 6
Question 2:x=14.3-(6.3+2)
x=14.3-8.3
x=6
Question 3:x=20.6-(8.6+7)
x=20.6-15.6
x=5
HELLLP MEEEEEEEE PLEASE
Answer:
Each side is 15 ft
Step-by-step explanation:
The area of a square is given by
A = s^2 where s is the side length
225 ft^2 = s^2
Take the square root of each side
sqrt ( 225 ft^2) = sqrt ( s^2)
15 ft = s
Each side is 15 ft
Jennifer is saving money to buy a bike. The bike costs $282. She has $128 saved, and each week she adds
$14 to her savings.
How long will it take her to save enough money to buy the bike?
Answer:
11 weeks
Step-by-step explanation:
$282 = $128 + 14w
$282 -$128 = $14w
$154 = $14w
14 = 14
11 = w
The perimeter of an equilateral triangle is 4 inches more than the perimeter of the square, and the side of the triangle is 5 inches longer than the side of the square. Find the side length of the square and triangle
Answer:
i think the answers 10
Step-by-step explanation:
A scale of a coffee mug in a picture is ½ in : 3 cm. Find the actual length of the 4 in. coffee mug.
Answer:
18 cm
Step-by-step explanation:
i may be wrong though because of the way you asked your question, but I am smart so i think i got this answer correct.
solve for k
k/4+3=14
k=4
Answer:
k=44
Step-by-step explanation:
Answer:
k=44
Step-by-step explanation:
Suppose that 18 inches of wire costs 54 cents.
At the same rate, how much (in cents) will 53 inches of wire cost?
cents
Answer:
162 cents
Step-by-step explanation:
18 times 3 to get 54 then do 54 times 3 is 162
Dunkin donuts is selling a 12 muffins for $3.60. What is the unit price per muffin? **
Answer:
30 cents per muffin
Step-by-step explanation:
3.60 divided by 12=.30
Answer: $0.30
Step-by-step explanation:
If 1/5 of a pizza has 380 calories, how many calories are in 1/8 of that pizza?
Answer:237.5
Step-by-step explanation: 380x5=1900, 1900/8=237.5
The required calories in 1/8 of a pizza is 237.5 calories.
Given that, 1/5th of a pizza has 380 calories. To calculate calories in 1/8 of the pizza by using concept of proportion.
Let a, b, c and d be any real numbers. Consider these four number are in proportion such that a : b : : c : d. That gives, a/b = c/d.
Let "x" represent the number of calories in 1/8 of the pizza.
By using proportion,
(1 / 5) / (1 / 8) = 380/x.
Dividing fraction is by multiplying first fraction with reciprocal of second fraction.
(1/5) × (8/1) = 380/x.
8/5 = 380/x.
By cross multiplication, gives,
8x = 380 × 5= 1900.
x = 1900/8 = 237.5.
Hence, the required calories in 1/8 of a pizza is 237.5 calories.
Learn more about proportion click here:
https://brainly.com/question/29259142
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Rosa has a chicken farm. The ratio of red to black chickens is 2 to 3. If she has a total of 20 chickens, how many are red?
Answer: If 2 out of every 3 chickens are red, then about 13 chickens would be red. There is no whole-number answer because 20/3 cannot be simplified to a whole number.
Michael received a grant to make a community garden. He makes a scale drawing of his vision for the garden. Michael's drawing shows the layout of 9 raised garden beds of the same size. The scale from his drawing to the actual garden is 2 cm for every 1 ft. What is the actual area of one of the garden beds? (HINT: the formula is A = L x W. How many things do you need to find?)
Step-by-step explanation:
Find the diagram to the question attached.
From the diagram, we are given the following dimension for one of the beds;
Length = 16cm
Width = 8cm
If the scale from his drawing to the actual garden is 2 cm for every 1 ft, then on converting to feet;
2cm = 1ft
16cm = x fr
cross multiply
2x = 16
x = 8ft
Hence 16cm = 8ft (based on the scale)
Similarly:
2cm = 1ft
8cm = x fr
cross multiply
2x = 8
x = 4ft
Area of the garden bed (in feet) = Length * Width
Area of the garden bed = 8ft * 4ft
Area of the garden bed = 32ft²
Hence the actual area of one of the garden beds is 32ft². We need to find 2 things fir us to get the required answer. First is the length of the bed in feet and the second is the width of the bed in feet.
CAN SOMEONE PLEASE HEL ME OUT?!?!?! UwU O///O
What do you do when you do not have the y-intercept? Explain in detail how you can find it.
A video store charges $8 to rent a video game. You must be a member to rent from the store, but
the membership fee is free. Another video store in town charges only $3 to rent a video game for a
5 day period, but membership in this store is $50 per year. Which rental plan is more economical?
Explain in detail and give examples.
Answer:
The $3 per video game with $50 membership is more economically if you rent at least 11 games or more per year
Step-by-step explanation:
there are 365 days in a year
3 x 365 = 1095
1095 + 50 = $1145 (Cost per year)
8 x 365 = $2920 (Free Membership) cost per year
If you only rent 10 video games per year, they equals the same amount
$3 x 10 (games) = $30 Then $30 + $50 (Member Fee) = $80
$8 x 10 (games) = $80 for 10 games rental
If they rent 11 games or more per year, then the $3 rental is more economical.
$3 x 11 = $33; $33 + 50 = $83
$8 x 11 = $88
Convert 6500 ounces to liters. plz show work
Answer:
About 192.22775 liters
Step-by-step explanation:
1 ounce = 0.0295735 litre
=> 6500 ounces = 0.0295735 x 6500 = 192.22775 litres
F(x)=4x^2-1 what is the inverse
Let [tex]y = F^{-1}(x)[/tex] and [tex]F(y) = x[/tex]
[tex]4y^2 - 1 = x\\4y^2 = x + 1\\y^2 = \frac{x + 1}{4}\\y = \sqrt{\frac{x + 1}{4}}\\f^{-1} = \sqrt{\frac{x + 1}{4}}[/tex]
Write an equation for the line that passes through the points (1,4) and (2, -4).
Answer:
-8
Step-by-step explanation:
We can use the formula [ y2-y1/x2-x1 ] to solve.
-4-4/2-1
-8/1
-8
Best of Luck!
First of all, Let's find the slope because we need it on the formula for finding the y-intercept.
m = y2 - y1 / x2 - x1
From the points given in the question,
x1 = 1
x2 = 2
y1 = 4
y2 = -4
Plugging in the above formula,
➝ m = -4 - 4 / 2 - 1
➝ m = -8 / 1
➝ m = -8
Now finding the y-intercept[tex]:[/tex]
➝ y = mx + b
And if we put in the values from our first point (1, 4) we get
➝ 1 = -8 (4) + b
➝ 1 = -32 + b
➝ b = 1 + 32
➝ b = 33
Required equation of the line:
➝ y = -8x + 33
Carry On Learning !
samantha has 20 marbles paul has m marbles. Of samantha has 6 times as many marbles as paul, write an equation to show how many marbles paul has?
Answer:
20 = 6m or m = 20/6 = 10/3
Step-by-step explanation:
Let's say Samantha has s marbles and Paul has m marbles.
We know that s = 20 and that Samantha has 6 times as many marbles as Paul. This means s = 6m.
Substitute 20 in for s:
20 = 6m
m = 20/6
Thus, the equation is m = 20/6.
~ an aesthetics lover
Answer:
20 = 6m or m = 20/6 = 10/3
Step-by-step explanation:
You see 6m or m is equal to 20
Given j∥k and m∠2=100° .
What is m∠5 ?
Answer:
see below
Step-by-step explanation:
since there isn't any image given,
there are two possible answers
1. m∠5 = 180 - 100
m∠5 = 80°
2. m∠2 ≅ m∠5
Henry bought 5/6 pound of roasted almonds for $5 . He wants to know the price for a pound
Answer:
i think its 6
Step-by-step explanation:
You have to divide 5 to 5/6 which equals 6
Answer:
6
Step-by-step explanation:
PLEASE HELP WILL CHOOSE BRAINIest.
Answer:
It would be C because the original price is 7 and they reduced the price by tow so it would be (7-2)
Step-by-step explanation:
answer pls , i need it now hurry
Answer:
D
Step-by-step explanation:
yw
Determine if the triangles are congruent. If they are, state how you know.
Answer:
they are congruent
Step-by-step explanation:
because they are identical in form/ they have the same shape, angles, etc.
what is hexagon pentagon and octagon with their discovery
Answer:
Pentagon is 5 sided polygon and hexagon is 6 sided polygon
ASAPPP HURRY UP PLSSS
Answer:
12
Step-by-step explanation:
I just need to know the answer .
Answer:
x = 7
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
Solve for
x
by simplifying both sides of the inequality, then isolating the variable.
Inequality Form:
x>7
Interval Notation:
7
56,234,567, as a single digit times a power of ten
Answer:
5.6235567 * [tex]10^{7}[/tex] as scientific notation
A single digit times a power of ten is called a scientific notation.
If my answer helped, kindly mark me as the brainliest!!
Thank You!!
geometrical prove that limit X tends to zero sin x by X equals to 1 various is measured in radian
[tex]lim \frac{ \sin(x) }{x} = 1 \\ [/tex]
It is true only whenever x tends to 0(zero)
it is not importent that x be in radian or in degree.
You play video games for 15 minutes. You lose 165 points. What is the mean change in points per minute?
Answer:
The mean would be 11
Step-by-step explanation: