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2 pounds at max, she is NOT able to buy 2.3 pounds, since 2.3 > 2.18
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someone help me!! i’ll mark brain list!!
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Which statements are correct about the average rate of change for the function f(x) = x2 + 9x + 18 ?
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Answer:
Presumably this is a multiple choice question, and without seeing the potential answers, we can't tell you which ones are correct.
A few things can however be said about this function:
1) It describes a parabola that extends upward infinitely. We can see this because it's in the classic format ax² + bx + c, and all terms are positive.
2) We can find the x-intercepts by solving for zero. In this case we can do that by factoring it:
x² + 9x + 18 = 0
x² + 3x + 6x + 18 = 0
x(x + 3) + 6(x + 3) = 0
(x + 6)(x + 3) = 0
So the x intercepts occur at (-6, 0) and (-3, 0)
3) we can find its vertex by taking its derivative and solving for zero:
f'(x) = 2x + 9
0 = 2x + 9
x = -4.5
We can then plug that coordinate into the original function to find the y coordinate:
f(x) = x² + 9x + 18
f(-4.5) = 20.25 - 40.5 + 18
= -2.25
So the vertex is at (-4.5, -2.25)
4) As mentioned, the derivative of f(x) is f'(x) = 2x + 9. The integral is:
x³ / 3 + 9x² / 2 + 18x + C
For an art project, Lisa has decided to decorate the letter block “L” (shown in the diagram) built from two rectangular prisms.
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Answer:
2400
Step-by-step explanation:
please help! I need the answer
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Answer:
[tex]\huge\boxed{\sf x = 3}[/tex]
Step-by-step explanation:
[tex]\displaystyle \frac{x+1}{2} + \frac{x}{3} = 3\\\\LCM = 6\\\\So, Multiply \ both \ sides \ by \ 6\\\\ (\frac{x+1}{2} * 6) + (\frac{x}{3} * 6) = 3*6\\\\3(x+1) + (x*2) = 18\\\\ 3x + 3 + 2x = 18\\\\5x + 3 = 18\\\\Subtract \ 3 \ to \ both \ sides\\\\ 5x = 18-3\\\\5x = 15\\\\Divide \ both \ sides \ by \ 5\\\\\boxed{ x = 3}\\\\\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Find the midpoint M of the line segment joining the points S = (1, -2) and T = (-7,-6).
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Answer:
(-3 ,-4)
I have made it in above picture
hope it helps
write each answer in simplest form
6% of 75
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If you need to round to the nearest whole number, then your answer is 5
28.
Car A and car B are 120 km apart. If they move towards each other, they will meet in 1 hour. If they
move in the same direction, car A will catch up with car B in 5 hours. Find the speed of car A and
the speed of car B. (Assume that the speeds of the cars are constant.)
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Towards each other effective speed = x+y
t= d/r
120/(x+y) = 1
x+y=120..........................(1)
in the same direction effective speed = x-y
120/(x-y) =5
x-y = 24...................(2)
solve (1) & (2)
add
2x=144
x=72
you find out y
PLSS HELP 50 PTS
Which polygons are congruent?
Select each correct answer.
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Answer:
A and B
Step-by-step explanation:
Hope this helped :)
Help pls because I really need help
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Answer:
answer is third,hope i helped u
The answer is 7/5
Please help:)
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Answer:
AB = 1.4 or 7/5
Step-by-step explanation:
(Excuse my rambling but I wanted to be sure of myself)
AD = 2(5/2) = 5
AD is a diameter.
any triangle in a circle with the hypotenuse as the diameter is a right triangle.
Draw a line from point A to point C.
ΔACD is a right triangle.
Solve for ∠CAD:
sin CAD = 3/5 = 0.6000
∠CAD = 36.87°
arc CD = 2 x 36.87° = 73.74°
arc BC = arc CD = 73.74°
arc DB = 147.48°
∠BAD = 1/2 (147.48°) = 73.74°
draw a line from point D to point B
ΔBAD is a right triangle.
cos 73.74° = AB/5
AB = 1.4
Plz help me! Well put brainliest
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Plz give brainliest
D. 3(6)(4) = 72 Cm³
Volume Is L x W x H
Iready algebra expressions with exponents evaluate the expression 2b’3+5 when b = 3 help
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Answer:
when you substitude 3 for b in (2b^3)+5 this should equal 23
Step-by-step explanation:
(2b^3) +5
(2(3)^3) +5
(2(9)) +5
(18) +5
PLEASE HELPP thanks (if you do):))
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Answer:
h = 2 yd
b = 8 yd
The area of the trapezoid of 12 yd
Step-by-step explanation:
Nancy and Evan are each writing a 6-page essay. Nancy completed 4/6 of her essay in the morning and 2/6 of her essay in the afternoon. Evan completed 3/6 of his essay before school and 2/6 of his essay after school. Nancy says that she completed more of her essay than Evan. Evan says that he completed more of his essay than Nancy. Who is correct?
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Answer:Nancy completed more of the essay.
Step-by-step explanation:4/6 + 2/6 = 6/6 = Nancy
3/6 + 2/6 = 5/6 = Evan
Therefore Nancy did more of the essay.
Good morning can somebody help me out the answer choice are
A.56.4 degrees
B.40.0 degrees
C. 13.3 degrees
D. 33.6 degrees
Answers
Answer:
Option D
Step-by-step explanation:
Measure of adjacent side = 20
Measure of Hypotenuse = 24
Since, measures of adjacent side and Hypotenuse have been given in the question, cosine ratio will be applied to find the measure of angle x.
cos(x) = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex]
cos(x) = [tex]\frac{20}{24}[/tex]
x = [tex]\text{cos}^{-1}(0.833)[/tex]
= 33.55°
≈ 33.6°
Option D is the answer.
At the beginning of June, Max and Sean start saving money for the fair, which occurs 10 weeks later. Sean
starts out with $20 and saves just $2 per week. Max starts out with no money, but saves 5 dollars per week.
After how many weeks will Max have more money saved than Sean?
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Answer:
Step-by-step explanation:
sean has 20 +2 : 2 x 7 = 14 + 20 = 34
max has 0 + 5: 5 x 7 = 35
so after 7 week max will have more money
PLZ HELP AND HURRY!!!!
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Answer: x=30, Good Luck!
Step-by-step explanation:
45/27 = 1.6666666...
1.66666...(18) = 30
Good morning! Please help me sort these out for math in the picture above ( I put letters in red so then you can just tell me where the letter goes under either possible or impossible)
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Answer:
sorry hunny you on your own
Please help with this if you don’t know don’t answer
Answers
Answer:
3\16
Step-by-step explanation:
movement of snail per hour,1/8×3/2=3/16
16-(-10) need help plz
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16-(-10)
=16+10
=26
hope this helps!!
YOO LAST ONE HELP OUT
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Answer:
The answer for A: The coordinates for G is (5,3) so plot that in.
The answer for B: "G and E are 5 units away from the y-axis"
The answer for C: "The distance between G and E is 10 units"
Hope this helps!
Step-by-step explanation:
A principal wants to know if students at a particular high school are in favor of a new dress code at their school. The principal is not able to ask the opinion of every student at the school, so she needs to select an appropriate sample of the students to represent the high school. Select which sample of students the principal should choose. A Students randomly selected from a list of all students at the school. B Students sitting at randomly selected tables in the library. Students she selects from the hallway between classes. Students selected by the teachers.
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Answer:
student randomly selected from a list of all students at the school
Consider triangles CBD and BDE and answer the questions that follows
2.1 Which side is common in both triangles?
2.2 What can be concluded about the heights of A CBD
and A BDE? Give a reason for your answer.
2.31 Using your answers from 2.1 und 2.2 above complete
the following statements:
2.3.1 Area of A CBD
2.3.2 Area of ABDE
2.4 What can be concluded about the area of A CBD and
ABDE?
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Answer:
Step-by-step explanation:
∠ABD ≅ ∠BDE..... (given).... (1)
m∠ABD + m∠CBD = 180°... (straight line ∠'s)... (2)
From equations (1) & (2)
m∠BDE + m∠CBD = 180°....(3)
m∠BDE + m∠CDB = 180°... (straight line ∠'s)... (4)
From equations (3) & (4)
m∠BDE + m∠CBD = m∠BDE + m∠CDB
m∠CBD ≅ m∠CDB.. (Proved)
HURRYYYYY I NEED HELP!!
Answers
Answer:
1. adjacent
2. vertical
3. adjacent
4. vertical
Step-by-step explanation:
1. adjacent - 2 angles are next to each other
2. vertical - 2 angles are opposite each other
3. adjacent - 2 angles are next to each other
4. vertical - 2 angles are opposite each other
What’s the slope of the line I forgot how to do it when it comes to negative ones :((!!
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HELPPPPP PLS ILL GOVE THE BRAINLIEST ANSWER !! just help asap !!
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answer is 4√2
because, using pythagoras theorem
x² = 4² + 4²
x² = 16 + 16
x² = 32
x = √32
x = √(16 × 2)
x = √16 × √2
x = 4 × √2
x = 4√2
HELP HELP HELP ALSO PLEASE EXPLAIN HOW U GOT THE ANSWER
Answers
Answer: There are 38 dogs, i got this by guessing the number and plugging it in
Step-by-step explanation:
19 x 5 = 95
19 x 2 = 38
95 + 38 = 133
What is the sum of the areas of circle C and circle D?
O 7 units?
7 cm
D
O 1410 units
O 49 units
O 987 units
Answers
Answer:
98pi
Step-by-step explanation:
Area of circle: pi(r)^2
A1=pi(7)^2
A2=pi(7)^2
A2+A1=98pi
What is the GCF of the following terms 20n3 and 15n2 ?
Answers
Write an equation for a term value of 14. Solve your equation.
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Answer:
[tex]x {}^{2} - 2x - 1 = 14 \: where \: x = 5[/tex]