Answers
Answer:
7. -
a. 3.5 or 7/2 hours
b. 24.5
c. After 7 hours (and at the beginning when t=0)
8. -
a. 4 seconds
b. 1 second
c. 54 meters
Step-by-step explanation:
7. M(t)=-2t^2+14t
M’(t)=-4t+14
a)
-4t+14=0
4t=14
2t=7
t=7/2
b) M(7/2)=24.5
c)
M(t)=0
-2t^2+14t=0
t^2-7t=0
t(t-7)=0
t=0, 7
8.
a)
h(t)=0
-6t^2+12t+48=0
t^2-2t-8=0
(t-4)(t+2)=0
t=-2, 4
t=4
b)
h(t)=-6t^2+12t+48
h’(t)=-12t+12
h’(t)=0
-12t+12=0
12t=12
t=1
c) h(1)=54
I hope this helps; please vote brainliest!
Related Questions
Can somebody help me with this? Will mark brainliest!
Answers
Answer:
Choice 1
Step-by-step explanation:
because if you rotate it a couple times it will end up in the same position as the other. idc about brainliest go ahead and give it to the other person pls
Which situation could the expression −255 represent? A Each of 5 golfers has the same score after 9 holes. The total of their scores is -25. So, each golfer's score is -5.Each of 5 golfers has the same score after 9 holes. The total of their scores is -25. So, each golfer's score is -5. B A temperature increases 25°F over 5 hours. So the temperature increased by 5°F per hour.A temperature increases 25degreeF over 5 hours. So the temperature increased by 5degreeF per hour. C A football team gains 25 yards in one play. They lose 5 yards in the next play. In the two plays combined, the team gained 5 yards.A football team gains 25 yards in one play. They lose 5 yards in the next play. In the two plays combined, the team gained 5 yards. D Over 5 weeks, Alyson withdraws $25 per week from her checking account. Altogether, she withdraws $125.
Answers
Answer and explanation:
Not sure if the question is complete or valid but I will explain each option:
Let's assume the question asks which of the options would provide a negative result of -25( as no option evaluates to -255)
A. There would be a negative result here since all golfers have a negative score of -5 after 9 holes, and therefore a total score of -25 for all five golfers
B. Temperature increases by 25 degrees after 5 hours hence 5 degrees increase for every 1 hour. This would obviously give a positive result.
C. A football team gains 25 yards in the first play and loses 5 yards in the second but has a result of 5 yards gained in total. Hence there was a penalty of losing 20 yards for a loss of 5 yards= 25 yards- 20 yards= 5yards
D. Alyson withdraws $25 every week for 5 weeks, therefore she withdraws $125 in 5 weeks. This would be a negative result of -$125.
Select all the equations that represent the distance formula. Group of answer choices LaTeX: d=\sqrt{\left(x_1-x_2\right)^2+\left(y_1-y_2\right)^2} d = ( x 1 − x 2 ) 2 + ( y 1 − y 2 ) 2 LaTeX: d=\sqrt{\left(x_2+x_1\right)^2+\left(y_2+y_1\right)^2} d = ( x 2 + x 1 ) 2 + ( y 2 + y 1 ) 2 LaTeX: d=\sqrt{\left|x_2-x_1\right|^2+\left|y_2-y_1\right|^2} d = | x 2 − x 1 | 2 + | y 2 − y 1 | 2 LaTeX: d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2} d = ( x 2 − x 1 ) 2 + ( y 2 − y 1 ) 2 LaTeX: d=\sqrt{\left(x_2+x_1\right)-\left(y_2+y_1\right)}
Answers
Answer:
[tex]D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Step-by-step explanation:
The distance between two points A(x₁,y₁) B(x₂,y₂) is given by the formula as follows :
[tex]D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
It is used to find the distance between two points. It is an application of the Pythagorean theorem. Usually, the distance covered is equal to the product of speed and time. But when speed and time in not given but coordinates are given, then only we can use this formula.
1) The ratio 20 minutes to 1hour can be written 1:n. What is the value of n.
2) The scale on a map is 1:25000 how many kilometres on the ground is represented by 9 cm on the map?.
Answers
Answer:
n=3 x=225,000km
Step-by-step explanation:
1hour=60mins
20:60
1:3
n=3
1/25000=9/x
x=9×25000
x=225,000km
hope it helps:)
Did i do this right plz help
Answers
F(x) = 4x - x to the second power
So you substitute x for the numbers under x.
The second answer under f(x) is wrong it’s suppose to be...
F(x) = 4(0) - 0 to the second power the answer is 0.
The third answer under f(x) is also wrong the answer is...
F(x) = 4(-1) - -1 to the second power the answer is -3.
Looking back I see that under x the number 2 in f(x) is wrong also.
The answer Is f(x) = 4(2) - 2 to the second power equals 4.
Answer:
No
Step-by-step explanation:
Answer:
0,0
1,3
2,4
3,3
Which has the lowest minimum temperature between -6, 4, -7, -1, 5, -3
Answers
Answer:
-7
Step-by-step explanation:
Find the domain and range of the function represented by the graph
Answers
Answer:
4(b) , 5(a)
Step-by-step explanation:
(4). (b) Domain is {0, 1, 2, 3} and Range is { - 3, - 2, - 1, 0}
(5). (a) Domain is [ - 4, 2] and Range is [ - 4, 4]
or
domain: - 4 ≤ x ≤ 2 , range: - 4 ≤ y ≤ 4
Evaluate -8 × |2|.
A)-10
B)10
C)-16
D)16
Answers
Answer:
-8*|2|=-16, so Option C: -16 is the correct answer.
Step-by-step explanation:
Please help me with this
Answers
PLZ HELP ME NOW!!!!! I WILL GIVE BRAINLIEST!!!
combine like terms
3a + 7 - 11 - 9a
Answers
Answer:
-6a - 3
Step-by-step explanation:
hope this helps
Answer:
11a -18
Step-by-step explanation:
Inverse 9A make it to -9A take it to the other side and inverse +7 to -7 and take it to below -11 so -11 -7 is -18
help me graph this i with a step by step guide if possible
Answers
Answer:
n≥9
Step-by-step explanation:
n-7>=2
change the equation
n≥2+7
add 7 to 7 and two the seven gets canceled out and you are left with n≥9
The experimental probability of getting a 6 on a number cube is StartFraction 7 over 40 EndFraction. Which is true about the event’s experimental probability? The number 6 came up a total of 40 times. The number 6 came up 7 times out of a total of 40 trials. The number cube was rolled a total of 47 times. After 7 trials, the number 6 came up 40 times.
Answers
Answer:
The number 6 came up 7 times out of a total of 40 trials.
Step-by-step explanation:
took the test
The correct option is the number 6 came up 7 times out of a total of 40 trials.
What is Probability?Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.
The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.
The degree to which something is likely to happen is basically what probability means.
Given:
Event: getting a 6 on a number cube
P( getting a 6 on a number cube) = 7/40
So, to expand the meaning of given probability we have
The number 6 came up 7 times out of a total of 40 trials.
Learn more about probability here:
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i need help on this please
Answers
Answer:
1 solution
Step-by-step explanation:
If you solve for the system of equations you get (0,1) or x=0; y=1. This leads us to select B: One Solution as our answer choice.
If you can please give my answer the brainliest that would be much appreciated. Thanks!
PLZ HELP ASAP!
The altitude of a triangle is a line or segment that passes through a vertex and is perpendicular to the line containing the opposite side.
TRUE OR FALSE?
Answers
The knitting club sold 40 scarves and hats at a winter festival and made $700 from
the sales. They charged $18 for each scarf and $14 for each hat.
If s represents the number of scarves sold and h represents the number of hats
sold, which system of equations represents the constraints in this situation?
I need how many hats and scarves were sold not the solution
Answers
Answer:
56576765465-5655676756+
75y5yg57+u5u57576574874+
65764784667+857647984765+
589578575975
Introduction to the quotient rule of exponents: simplify x3/x5
Answers
Answer:
the answer is 15 :)
4.89 is this a rational or a irrational
Answers
Answer:
Rational because it isn't a repeating decimal
Step-by-step explanation:
The cube of a negative number divided by the square of 5 times a number
Answers
Answer:
finding a cube of a negative number will always be negative , just as the cube of a positive number will always be positive
Step-by-step explanation:
Which statement is true? Select all that apply.
Answers
The true statements are:
1) The relationship is proportional
2) y = -3x is equation of the line.
3) The slope is negative.
What is a slope?In mathematics, a line's slope, also known as its gradient, is a numerical representation of the line's steepness and direction
A graph of the line is given.
If a line passes through two points (x₁ ,y₁) and (x₂, y₂) ,
then the equation of line is
y - y₁ = (y₂- y₁) / (x₂ - x₁) x (x - x₁)
And line passes through the points (4, -12) and (6, -18).
To find the slope;
m = (y₂- y₁) / (x₂ - x₁)
m = -3
The slope is negative.
Then the equation of the line is,
y + 12 = -3(x -4)
y + 12 = -3x + 12
y = -3x
This equation shows the proportional relationship.
Therefore, all the required values are given above.
To learn more about the slope;
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Monica bought a package of 434 party favors to give to the guests at her birthday party. She calculated that she could give 9 party favors to each guest and she wanted to have 20 left over to give to a friend who was also throwing a party. How many guests is she expecting?
Answers
Answer:
so meh answer is
Step-by-step explanation:
please help me find the answer
Answers
Answer: x=2
Step-by-step explanation:
What you do is you plug the y equation on top and you substitute it in for the y on the equation below. You have -3x=-2(-5x+8)-10
Juan wants to solve the equation below using the Distributive Property.4(6 – x) = 12What should Juan’s first step be?
A.Multiply 4 by x.
B.Subtract x from 6.
C.Distribute 4 to (6 – x).
D.Subtract 4 from both sides.
Answers
Answer:
C
Step-by-step explanation:
Juan's first step to solve the distributive property will be to distribute 4 to (6 – x). The correct option is C.
What is distributive property?This property states that multiplying the total of two or more addends by a number will produce the same outcome as multiplying each addend by the number separately and then adding the results together.
Given that Juan wants to solve the equation below using the Distributive Property 4(6 – x) = 12.
The equation can be solved as:-
4(6 – x) = 12
24 - 4x = 12
4x = 36
x = 9
Hence, the value of x is 9 when the equation is solved by distribution.
To know more about distributive property follow
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find the line of reflection if the image of (-5, -2) is each of the following
a. (5, -2) |_____|
b. (2, 5) |_____|
c. (-5, 0) |_____|
d. (1, -2) |_____|
Answers
Answer:
A: -5, 2
B: -2, -5
C: 5, 0
D -1, 2
Hope this helps!
Adele is 5 years older than Timothy. In three years, Timothy will be 2/3 of Adele’s age. What is Adele’s current age?
Answers
Answer:
12 years old
Step-by-step explanation:
Answer:
Step-by-step explanation:
-2(x-4)=-16
SOLVE FOR X!!
Answers
Answer:
x = 12
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesStep-by-step explanation:
Step 1: Define equation
-2(x - 4) = -16
Step 2: Solve for x
Distribute -2: -2x + 8 = -16Isolate x term: -2x = -24Isolate x: x = 12Step 3: Check
Plug in x to verify it's a solution.
Substitute: -2(12 - 4) = -16Subtract: -2(8) = -16Multiply: -16 = -16Here we see that -16 does indeed equal -16.
∴ x = 12 is a solution of the equation.
express 25 minutes as fraction of 1 hour
Answers
Answer:
1/4
Step-by-step explanation:
Pls look at the picture and help me answer it pls
Answers
Answer:
5 times 2
Step-by-step explanation:
Answer:
10 divided by 2
Step-by-step explanation:
There is ten circles and there's two sets of them. Each set has 5 circles meaning all you're doing is 10 divided by 2.
5,-15,35,55....
What is the common difference
Answers
Answer:
The common difference is -20
Step-by-step explanation:
Simply subtract 5 from -15
-15-5 = -20
The melting points of some chemical elements are shown below. Nickel: 2,651 Mercury: -37.89 Helium: -458 Copper: 1,984.32 a) Which two elements have melting points that are closest in value? b) What is the average melting point of the substances? Round your answer to the nearest tenth. Explain how you got to the answer.
Answers
Answer:
Mercury and helium
1034.8575
Step-by-step explanation:
Given that :
Melting point of substances :
Nickel: 2,651
Mercury: -37.89
Helium: -458
Copper: 1,984.32
Melting means change of solid to liquid
a) Which two elements have melting points that are closest in value?
The difference in Melting point between mercury and helium :
- 37.89 - (-458) = 420.11
Nickel and copper :
2651 - 1,984.32 = 666.68
Hence, element with melting point which are closest in value Are Mercury and helium
b) What is the average melting point of the substances?
Sum of the melting points / number of substances
(2,651 + (-37.89) + (-458) + 1,984.32) / 4
= 4139.43 / 4
= 1034.8575
Help! I’m a little confused