Answer:
the additional cost to produce each phone
The football coach threw a football from a platform to his
quarterback below. The height of the football, h, at time t seconds is modeled by the equation h(t) = -16t^2 + 28t + 15.
1. What is the maximum height of the ball?
2. If the quarterback caught the ball at a height of 6 feet, how many seconds was the ball in the air?
3. Give the domain and range of the function.
Answer:
1)27.25 feet
2)-0.2774,2.027
3)Domain = All real numbers
Range = y∈R : [tex]y \leq \frac{109}{4}[/tex]
Step-by-step explanation:
The height of the football, h, at time t seconds is modeled by the equation [tex]h(t) = -16t^2 + 28t + 15[/tex]
General quadratic equation : [tex]ax^2=bx+c=0[/tex]
1) Maximum height will be at [tex]\frac{-b}{2a}=\frac{-28}{2(-16)}=\frac{7}{8}[/tex]
To find maximum height Substitute [tex]t = \frac{7}{8}[/tex] in the given equation
[tex]h(t)=-16(\frac{7}{8})^2+28(\frac{7}{8})+15\\h(t)=27.25 feet[/tex]
2)
Substitute h(t)=6
So, [tex]-16t^2+28t+15=6[/tex]
[tex]-16t^2+28t+9=0\\t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\t=\frac{-28\pm \sqrt{28^2-4(-16)(9)}}{2(-16)}\\t=\frac{-28+ \sqrt{28^2-4(-16)(9)}}{2(-16)},\frac{-28- \sqrt{28^2-4(-16)(9)}}{2(-16)}\\t=-0.2774,2.027[/tex]
3)
Domain = All real numbers
Range = y∈R : [tex]y \leq \frac{109}{4}[/tex]
The recipe for 1 batch of cookies calls for ¾ cups of sugar. How many cups of sugar do you need for ½ a batch of cookies?
Answer:
3/8 cups of sugar.
Step-by-step explanation:
By multiplying the denomintor by 2 you can get half of what it was.
During a winter sale,skirts are 15$ each and trousers and 20$ each. The skirts and trousers Shelly can buy for 100$
Answer:
plz i need help
Step-by-step explanation:
John is x years old, Ahmad is 3 years older than John. The total of their age is 63 years. Form and equation and work out the age of Ahmad.
Answer:
x = john
x + 3 = ahmad
x + (x + 3) = 63
2x + 3 = 63
2x = 60
x = 30
john is 30 so ahmad is 33
1.43 x -20/39 is close to -.075. Is this estimate reasonable? The product is negative and half of ?
Answer:
yes, that is correct
Step-by-step explanation:
- (20÷39) = - 0.513
- 0.513 * 1.43 = - 0.734 ~ - 0.75
27 Which equation best represents the relationship between x and y in the graph?
А у 3х + 3
в у 3х - 1
суз
0 - 3x - 1
Answer:
Pls attach graph
Step-by-step explanation:
Help me with my review please
2.
7 in
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2 in
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What is the Scale Factor?
21 in
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6 in
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Find the sum of the interior angle measures of the green polygon,
Then sum of the interior angle measures is
Answer:
The sum of interior angles of given polygon is 900°
Step-by-step explanation:
A regular polygon is a n-sided figure with n sides and the length of all sides is same.
In the diagram, we have a polygon with 7 sides.
The formula given is used to calculate the sum of interior angles of a polygon
[tex]Sum\ of\ interior\ angles = (n-2)*180[/tex]
Here n is the number of sides of polygon
In the given polygon
n = 7
So,
[tex]Sum = (7-2)*180 = 5*180 = 900[/tex]
Hence,
The sum of interior angles of given polygon is 900°
-4x - 9(x - 2)? Need help
Answer:
−13x+18
Step-by-step explanation:
=−4x+(−9)(x)+(−9)(−2)
=−4x+−9x+18
Combine Like Terms:
=−4x+−9x+18
=(−4x+−9x)+(18)
=−13x+18
Answer:
[tex] = - 4x - 9(x - 2) \\ = - 4x - 9x + 18 \\ = - 13x + 18[/tex]
Michael walks 30 meters in 20 seconds. How many meters does he walk per second?
Answer:
1.5 meters per second
Step-by-step explanation:
30 meters in 20 seconds. U need to "separate" the 30 seconds into 20 parts so u have to divide:
30/20 = 1.5
Answer: 1.5 meters
Step-by-step explanation:
To find how many meters in 1 second we need to make a unit. We'll use fractions in this case...
30 meters ÷ 20 1.5 meters
-------------- = -----------------
20 seconds ÷ 20 1 second
This is a fancy was of saying 1.5 meters per 1 second.
A BMW I-8 has N advertised rate of acceleration of 6.39 m/s to the second power. Based in the advertised date of acceleration, what would the velocity of a bmw I-8, starting from rest, in 4.20 seconds
Answer:
3.43
Step-by-step explanation:
PLEASE HELP!
I WILL MARK BRAINLIEST!!!
Answer:
x=159/8
Step-by-step explanation:
you are supposed to put all those numbers and x's together and combine like terms then subtract from 180 and then divide
20 pts, try to find short story and novel pages, A novel has 13 times as many pages as a short story. The combined number of pages in the books is 448 pages. How many pages are in each book?
Short Story:
Novel:
Answer:
short story has 32 pgs
novel has 416 pgs
Step-by-step explanation:
a novel (N) has 13 times as many pages as a short story (x) so, N = 13X
total pages is the equation N + x = 448
plug the equation for N into this
13x + x = 448, combine like terms
14x = 448, divide both sides by 14
x = 32. so now we know that the short story has 32 pages. subtract that from 448. and the novel has 416 pages.
There are 32 pages in the short story and 416 pages in the novel.
What is a numerical expression?A numerical expression is algebraic information stated in the form of numbers and variables that are unknown. Information can is used to generate numerical expressions.
Let x be the number of pages in the short story.
We know that the novel has 13 times as many pages as the short story, so the number of pages in the novel is 13x.
The combined number of pages in the books is the sum of the number of pages in the short story and the number of pages in the novel, which is x + 13x = 14x = 448 pages.
So the number of pages in the short story is x = 32 pages.
And the number of pages in the novel is 13x = 13 × 32 = 416 pages.
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Help me please I don’t understand
Answer:
Transformations of function -3(4x)² - 5:
vertical stretchreflects across y axishorizontal compressiontranslates downWhat is - 1/9 (-27) please with work shown?
what is the least common multiple of 10 and 27
Answer:
270 ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
Adrian are 3 ani, iar tatăl lui are 34 de ani. Peste câți ani Adrian va fi de două ori mai tânăr decât tatăl său?
Answer:
27 years
Step-by-step explanation:
Given that :
Adrian's age = 3
Father's age = 34
In how many years will Adrian be twice as young as his father?
Let the number of years = x
2(3 + x) = 34 + x
6 + 2x = 34 + x
2x - x = 34 - 6
x = 28
A narrow rectangular banner is 5 inches wide. It is 6 times as long as it is wide
Answer:
30 inches long
Step-by-step explanation:
width=5
length=6x5
6x5=30
length=30
PLEASE HELP!!!
Find the angle measures and explain
At a hardware store, they can cut a length of rope off of a big roll, so you can buy any length you like. The cost for 6 feet of rope is $7.50. How much would you pay for 50 feet of rope, at this rate?
Answer:
It should be 62.5 or 62.50.
Step-by-step explanation:
Here's why..........it would be very difficult to it another way so here is what I did....you have to find out how much 1 foot would cost which was 1.25 then multiply that by 50 and you will get 62.50.
The number 4 + i is multiplied by some real number to yield 2 + one-half i. Which equation is true?
Answer:
A. (1/2)(4+i)= 2+ (1/2)i
Step-by-step explanation:
The equation 1/2(4+i) = 2+(1/2)i is the transformation if we multiply the complex number 4 + i with 1/2 option first is correct.
What is a complex number?It is defined as the number which can be written as x+iy where x is the real number or real part of the complex number and y is the imaginary part of the complex number and i is the iota which is nothing but a square root of -1.
We have a complex number:
= 4+i
Multiply it by 1/2
[tex]= \rm \dfrac{1}{2}(4+i)\\\\\rm =2+ \dfrac{1}{2}i[/tex]
[tex]\rm \dfrac{1}{2}(4+i) =2+ \dfrac{1}{2}i[/tex]
Thus, the equation 1/2(4+i) = 2+(1/2)i is the transformation if we multiply the complex number 4 + i with 1/2 option first is correct.
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120 x 45 thank youuuu
Answer:
5400
Step-by-step explanation:
basic math
Answer:
5400
Step-by-step explanation:
Caitlin drew a scale drawing of the community park in her town. The actual
long.
What scale did Caitlin use to draw the park?
o 1 inch equals 4 feet
4 inches equal 4 feet
o 1 inch equals foot
4 inches equal 1 foot
Answer: 1 inch equals 4 feet
Step-by-step explanation:
By an online search, I´ve found that:
The park is 48 ft long.
Caitlin´s drawing is 12 inches long.
To find how much each inch represents, we need to take the quotient between those lengths:
48ft/12in = 4ft/in.
We also can write this amount as:
4 feet per inch.
This means that each inch represents 4 feets.
Then the correct option is the first one: 1 inch equals 4 feet
Math assignment cant get it
Answer:
y = -1/2x + (-1)
Step-by-step explanation:
Find the next number in the sequence.
25, 36, 49, 64, ...
Answer:
81
Step-by-step explanation:
25, 36, 49, 64, ...
36 - 25 = 11
49 - 36 = 13 = 11 + 2
64 - 49 = 15 = 13 + 2
64 + 15 + 2 = 81
Manuel makes $8 per hour. He has worked 12 hours so far this week. How much has he made so far this week? Write an algebraic expression that describes how much he makes for any number of hours of work.
Answer:
Step-by-step explanation:
amount earned in 1 hr = $8
therefore, amount earned in 12 hrs = 12 x 8 = 96
let the amount earned in 1 hr be x
therefore, the amount earned in 12 hours = 12x
Hope this helps
plz mark as brainliest!!!!!!
The point P(6, -1) is translated according to the rule , y) - (1-5, y-2).
What are the coordinates of P'?
O P(1, 2)
O P'(1, 1)
OP'(1, -3)
P'(4, 4)
Answer:
C
Step-by-step explanation:
Took quiz
When using a number line to model addition, what does the first integer in a subtraction problem tell you?
It tells you where to begin on the number line.
It tells you what you how much money you have!
Which description of the transformation of z on the complex plane gives the quotient of 2 = 8(COS(30°) + i sin(30°)) and w = 2(cos(5°) + i sin(5°))?
scale z by a factor of 2 and rotate it 5 degrees clockwise
scale z by a factor of 1 and rotate it 5 degrees clockwise
scale z by a factor of 2 and rotate it 5 degrees counterclockwise
scale z by a factor of 1 and rotate it 5 degrees counterclockwise
The description of the transformation of z on the complex plane gives the quotient is B. scale z by a factor of 1 and rotate it 5 degrees clockwise.
What is a quotient?It should be noted that a quotient simply means the number that obtained when division of numbers takes place.
In this case, the description of the transformation of z on the complex plane gives the quotient of 2 = 8cos30° + i sin30° and w = 2cos5° + i sin5° is to scale z by a factor of 1 and rotate it 5 degrees clockwise.
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