Answer:
a) The maximum height that the ball reaches is 73.1 meter
b ) The time elapsed when the ball reaches its maximum height of flight = 2.2 seconds
Step-by-step explanation:
The complete question is
During a high school baseball tournament, Lando hits a pitch and the baseball stays in the air for 4.42 seconds. The function h(t) = -5t2 + 22t + 0.5 describes the height over time, where h is its height, in meters, and t is the time, in seconds, from the instant the ball is hit. a. What is the maximum height the ball reaches? b. What will be the time elapsed when the ball reaches its maximum height of flight?
Solution:
For maximum height
[tex]\frac{dh}{dt} =0[/tex]
[tex]\frac{d(5t^2 + 22t + 0.5)}{dt}\\ 10t + 22 = 0\\t = 2.2[/tex]seconds
a) Maximum height
[tex]5 * t^2 + 22t + 0.5[/tex]
[tex]= 5 * 2.2 *2.2 + 22 * 2.2 + 0.5 \\= 73.1[/tex]
b) Time elapsed when the ball reaches maximum height is 2.2 seconds
Jeannie got a new pair of eye glasses. She was able to pay $15 at the
time she received her glasses. She will pay $12 each month on the
balance. The original cost of the glasses was $87.
a. Write an equation to determine how many months it will take
Jeannie to pay for her glasses?
Answer:
Equation A. 12x=87
(3g - 8) - (2g - 1) ...........
Answer:
g-7
Step-by-step explanation:
Please help whats the error
Answer:
x=20°
Step-by-step explanation:
5x°=100° ----because they are vertically opposite angles
x=100/5
x=20°
Which linear equation is represented by the table? Please help me, I really don’t understand, thank you so much!!
Answer:
C) y=x+3
Step-by-step explanation:
I did it and got it right
Solve equation by using the quadratic formula.
2 x squared minus 5 x = 7
a.
x = StartFraction 2 Over 7 EndFraction, negative 1
c.
x = StartFraction 7 Over 2 EndFraction, negative 1
b.
x = StartFraction 2 Over 7 EndFraction, 0
d.
x = StartFraction 2 Over 7 EndFraction, 1
Answer:
Do you need all of them?
Step-by-step explanation:
Answer:
C) x=7/2,-1
Step-by-step explanation:
just took the pretest got this right
What inverse operation should be used to isolate the variable in the equation j ÷ 12 = 50?
Answer:
multiplication...
Step-by-step explanation:
50 x 12 = 600
SO...
j = 600
SOO...
600 / 12 = 50
there u go
can i be brainiest...
what is 26453 x 45=??????????????????
Step-by-step explanation:
11,90,385 is the correct answer.
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Answer: The answer to that is 1190385.
which equation matches the graph of the greatest integer fiction giving below? a p e x
Answer:
A P E X < CS
Step-by-step explanation:
simple
Find the area of the composite figure?
Answer:
128
Step-by-step explanation:
Let's start by figuring out the last side of the triangle
we can use the pathagoryous theroem and get
11.9²+x²=16.9²
Solve this and get x=12
Let's now compute the area of the triangle
b*h*.5
12*11.9*.5=71.4
So 71.4 is the area of the triangle
we now need to find the area of the semi circle.
to do this we are going to find the area and then divide it by 2
We know that the length is equal to 12 which means that the radius is 6
so we have
π6²/2
which is 56.55
We add the 71.4+56.55= 127.94 which rounds to 128
Answer:
212.758
Step-by-step explanation:
Find the semi-circle first, the diameter is 16.9 ft.
To find area:
Formula:
pi x radius x radius x 1/2
16.9 ÷ 2 = 8.45 (radius)
22/7 x 8.45 x 8.45 = 224.407 (Circle)
224.407 ÷ 2 = 112.203 (Semi circle)
Find the triangle:
1/2 x base x height or length x base x height
But for now, we will use the first one.
1/2 x 16.9 x 11.9 = 100.555
Now add them up.
100.555 + 112.203 = 212.758
(I don't know what units you to put for your answer since I don't learn American mathematics, so it's up to you)
If you combine 4x and -2x how many x's will we have left?
Answer:
Step-by-step explanation:
4x+(-2x)=2x
Write the equation of the line 1x + 3y = 6 in y = mx + b form.
Answer:
y = -1/3x + 2
Step-by-step explanation:
1x + 3y = 6
3y = -x + 6
y = -1/3x + 2
Answer:
[tex]y=-\frac{x}{3}+2[/tex]
Step-by-step explanation:
1x + 3y = 6
We want the y to be isolated, so we subtract x from both sides,
3y = 6 - x
Now we divide everything by 3, to isolate y
[tex]y=-\frac{x}{3}+2[/tex]
If Mia has brings 14 donuts to the party and Lizzy brings 14 also then how many cookie's is there all together
what is the answer? A B C D
Answer:
b
Step-by-step explanation:
Write the equation of the line passing through the point (3, 5) that is
PEREPENDICULAR to y = -3/4x + 5 in slope-intercept form.
Answer:
Step-by-step explanation:
perp. 4/3
y - 5 = 4/3(x - 3)
y - 5 = 4/3x - 4
y = 4/3x + 1
Write as a fraction with a whole number divisor: 35.7 ÷ 0.07
Answer:
510
that the whole number
- 1 greater than or equal to x, and - 9 is less than x
Answer:
−1⩾x>9
Step-by-step explanation:
9 less than x simply means x is greater than 9
[tex] - 1 \geqslant x > 9[/tex]
A boat rental charges a flat fee of $45 and $4 per hour. Which expression represents the total cost to rent a boat for h hours
Answer:
45h+ 4
Step-by-step explanation:
you got to divide but the expression is 45h+4
Find the volume of the cylinder. Use 3.14 for pi. Round your answer to the nearest tenth.
Answer:
The formula for the volume of a cylinder is V=Bh (where B is the base) or V=πr2h . The radius of the cylinder is 9 ft and the height is 6 ft. Substitute 9 for r and 6 for h in the formula V=πr2h = (3.14) (9) (2) (6) =339.12
Step-by-step explanation:
Now C=339.12 round to the nearest tenth is 339.1
A function is shown
f(x)=2/3x+3 what is the value of f(12)
Answer:
11
Step-by-step explanation:
f(12) = 2/3x+3
So, replace x with 12.
2/3(12) + 3
2/3 x 12 = 8
8 + 3 = 11
7th grade math please helpp i have alot of questions due in 10mins
Answer:
V=247.8
Step-by-step explanation:
V=whl
V = (4.2)(5)(11.8)
Find the value of x.
A
28
20
B
9x – 8
С
Answer:
The question is incorrect. please provide a diagram.
Lin runs 5 laps a track in six minutes how many minutes per lap is that
Answer:
1.2 minutes
Step-by-step explanation:
6 divided by 5 = 1.2
To do this, you take the total number of minutes, which is 6, and divide by the number of laps that Lin ran, which was 5.
Answer:
1.2 minutes
Step-by-step explanation:
5 laps/6 minutes = 1 lap/x minutes
To convert the ratio from 5 laps to one laps, 5 was divided by 5. Therefore, to keep the same ratio, 6 must also be divided by 5, making the answer:
1 lap/1.2 minutes
A(n) ______________ is a change in size or position of an object.
a) Translation
b) Transformation
c) Rotation
d) Dilation
Answer:
I am guessing transformation
Can someone help me with this question pls and thank you
Answer:
x>2
Step-by-step explanation:
Longer than two hours is >.
How many degrees is -6.2 rotations clockwise
Question 4
Solve the system of equations and choose the correct answer from the list of options.
x+y=-3
y = 2x + 2
A) ( 5/3,4/3)
B) (-5/3,-4/3)
C) (-2/5,-3/4)
D) ( 3/4,3/5)
just answer with the scale factor pleaseee
1.5 :)
Step-by-step explanation:
you would divide the 2 numbers, then youre left with the sf
A bus going 45km/h travels nonstop from the northern end of town to the southern end of town in 15 minutes. How far does the bus travel?
Step-by-step explanation:
15 minutes = 0.25 hours.
Distance the bus travels
= (0.25h)(45km/h)
= 11.25km.
Is (4, 2) is the solution to the system below?
Explain how you know by recording an audio response or by showing your work.
y=2x-6
x+y=8
PLEASEEEEEE HELPP ME EEEE :)
