Answer:
For the time interval 0 to 2 the ball is in the air.
Select the options according to this.
Step-by-step explanation:
The equation should be [tex]h(t)=-16t^{2} -30t+124[/tex]
Let's find the x intercepts to answer this question.
To find x intercept where the h(t) is 0.
[tex]-16t^{2} -30t+124=0[/tex]
Solve the equation for t.
Use quadratic formula to solve the equation.
a=-16
b=-30
c=124
[tex]x=\frac{-b+/- \sqrt{b^{2}-4ac } }{2a}[/tex]
Plug in the values of a, b and c into the formula
[tex]x=\frac{30+/-\sqrt{(-30)^{2}-4(-16)(124) } }{2(-16)}[/tex]
Simplify it
[tex]x=\frac{30+/- \sqrt{900+7936} }{-32}[/tex]
[tex]x=\frac{30+/-\sqrt{8836} }{-32}[/tex]
[tex]x=\frac{30+/-94}{-32}[/tex]
Simplify it to get two values for x
[tex]x=\frac{30+94}{-32} =-3.875\\\\x=\frac{30-94}{-32} =2[/tex]
x can not be negative, here x represents time t.
So, it starts from 0 and remains in the air for 2 seconds.
Answer:
Yo itś C
Step-by-step explanation:
:-)
Vicky reads at a constant rate. She can read 5 pages in 9 minutes write a linear equation in variables that represents the number of pages vicky reads in any given time interval
Answer:
5x=9 and that is the answer
Am i right? Or am i just confused
Answer:
I'm pretty sure your just confused. ^^
Step-by-step explanation:
Answer:
Your right
Step-by-step explanation:
Write the vocabulary word for: A ratio of two quantities with different units.
We dont have vocab words in class so....
Answer:
a rate
Step-by-step explanation:
I looked it up :P
x
+3<4
-7
WHATS THE ANSWER PPL
Answer:
x
12
Step-by-step explanation:
hope it helps
im literally crying because im so stressed and i don't understand if you know the answer please help i will do anything :(
Answer: 9x + 45 = 9x + 45 Infinitely many
Step-by-step explanation: Use distributive property for the left and add like terms for the right
Answer:
9,45,9,45 and infinite
Step-by-step explanation:
ngl im probably wrong but i tried
I need help, If you help me ill give u a cookie
Answer:
9
Step-by-step explanation:
let us suppose that
(-4,-6) is (x1,y1)
and (5, -6) is (x2,y2)
we know that
distance between two points = [tex]\sqrt{(x2-x1)^{2}+(y2-y1)^{2} \\[/tex]
[tex]=\sqrt{(5-(-4))^{2} + (-6-(-6))^{2} } \\= \sqrt{9^{2}+0 } \\= 9 units[/tex]
Plz help ASAP for 5 points
Answer:
the lower limit of first class interval is 15.because ina class intervel the 1st no.is called lower limit so 15.
Mari and Jen each work 20 hours a week at different jobs. Mari earns twice as much as Jen. Together they earn 480. How much does each girl earn?
Answer: Mari earns 320 and jen earns 160
the quotient of a number and 15 plus 1
Answer:
The equation for this is 15÷n+1
Step-by-step explanation:
Hope this helps!
A plane takes off from a runway and begins its climb. The plane takes off at a constant acceleration of 20 LaTeX: m /s^{2} . Once it reaches altitude it moves at 246 m/s, and maintains that speed. If it continues at this speed for 93 min, how far would the plane have traveled from the time took off?
Answer:
The plane have traveled 1512.9 m from the time took off
Step-by-step explanation:
Acceleration [tex]a = 20m/s^2[/tex]
Initial speed = u = 0
Final speed = v = 246 m/s
Time = t = 93
We are supposed to find how far would the plane have traveled from the time took off
We will use equation of motion
[tex]v^2=u^2+2as\\(246)^2=2\times 20 \times s\\\frac{(246)^2}{2 \times 20}=s\\1512.9 m=s[/tex]
Hence The plane have traveled 1512.9 m from the time took off
Misty must pack 365 candles into 15 boxes. Each box must contain an equal number of candles. How many candles does she have left over? (use long division to find the remainder)
A) 1
B) 3
C) 5
D) 7
The answer is 5 because you can fit 365 into 15 24 times and then that would equal 360 and then you have 5 left over.
15x24=360 365
- 360
____
5
Answer:
C
Step-by-step explanation:
10 can go into 365 10 times leaving 5 left over.
Rob peeled 125 oranges in 5 hours. At that rate, how many oranges
would he peel in 12 minutes?
Answer:
5 oranges in 12 minutes
Step-by-step explanation:
[tex]125 \div 5 = 25[/tex]
[tex]25 \div 60 = 0.41[/tex]
[tex]0.41 \times 12 = 5[/tex]
what i did here was I took the original amount (125), divided it by 5 which is 25 oranges per hour
1 hr = 60 mins
then I divided 25 oranges by 60 mins, then times it by 12 to get 5 around 5 oranges in 12 minutes.
Answer:
[tex]\boxed {\tt 5 \ oranges}[/tex]
Step-by-step explanation:
Let's set up a proportion.
[tex]\frac{oranges}{minutes} =\frac{oranges}{minutes}[/tex]
He can peel 125 oranges in 5 hours. First, let's find the minutes in 5 hours.
There are 60 minutes in 1 hour, so multiply 60 and 5 (60*5=300). There are 300 minutes in 5 hours.
[tex]\frac{125 \ oranges}{300 \ minutes}=\frac{oranges}{minutes}[/tex]
We don't know how many oranges he can peel in 12 minutes. So we say he can peel x oranges in 12 minutes.
[tex]\frac{125 \ oranges}{300 \ minutes}=\frac{x \ oranges}{12 \ minutes}[/tex]
[tex]\frac{125 \ }{300 \ }=\frac{x \ }{12 }[/tex]
Solve for x by isolating it. x is being divided by 12. The inverse of division is multiplication. Multiply both sides of the proportion by 12.
[tex]12*\frac{125 \ }{300 \ }=\frac{x \ }{12 \ }*12[/tex]
[tex]12*\frac{125 \ }{300 \ }=x[/tex]
[tex]12*0.416666667=x[/tex]
[tex]5=x[/tex]
Rob can peel 5 oranges in 12 minutes.
please help me if you can :) i gave as many points as i could.
Answer:
6. 2
7. (-3/2)
Step-by-step explanation:
6. 4x - 2y = 8
-4x -4x
-2y = -4x + 8
y = 2x + 4
y = 2/3x + 1
reciprocal of 2/3 is -3/2
Answer:
see explanation
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
(6)
Given
4x - 2y = 8 ( subtract 4x from both sides )
- 2y = - 4x + 8 ( divide all 3 terms by - 2 )
y = 2x - 4 ← in slope- intercept form
with slope m = 2
Parallel lines have equal slopes, thus
Slope of parallel line is m = 2
----------------------------------------------------------
(7)
Given
y = [tex]\frac{2}{3}[/tex] x + 1 ← in slope- intercept form
with slope m = [tex]\frac{2}{3}[/tex]
Given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{\frac{2}{3} }[/tex] = - [tex]\frac{3}{2}[/tex]
Alisa bought 3 shirts for $29 each and then spent $15 on lunch. She has $31 left. How much money did she have before?
Answer:
$133
Step-by-step explanation:
which graph represents the solution set for 1/2x
Answer:solve for y
y -1/2x ≥ 4
y ≥ 1/2x + 4
The y intercept is 4, and the slope is positive, so the only graph with that conditions is B.
Step-by-step explanation:
What is the slope of the line that passes through the points -15,-1 and -5,5
Write the equation -11x+9y=-12 in slope intercept form. what are the slope and y intercept?
Answer:
Step-by-step explanation:
first solve for y (or x) I chose y.
-11 + 9y = -12
(-11) - (-12) = 1
9y = 1
9/1 = 1
y=1, now for x.
-11x + 9 = -12
-12 - 9 = -21
-11x = -21
-21/-11 = -32
x = -32.
A hall has 35 rows. Each successive row contains two additional seat. If the first row has 20 seats, how many seats are in the hall?
Answer:
There are 1,890 seats in the hall
Step-by-step explanation:
The number of seats in the first row = 20 seats
The number of rows in the hall = 35 rows
The number of additional seat per row = 2 Seat
Therefore, the sequence of seats in the hall is an arithmetic sequence with the first term, a = 25, the common difference, d = 2, and the number of terms, n = 35
The formula for finding the sum of n-terms of an arithmetic progression, Sₙ is given as follows;
Sₙ = n/2 × [2·a + (n - 1)·d]
Plugging in the values, we get;
Sₙ = 35/2 × [2 × 25 + (35 - 1)×2] = 1890 seats
Therefore, there are 1,890 seats in the hall.
please help me with this asap
Answer:
I think the answer is A
hope this helps :3
sorry if im wrong
what is the equivalent ratio for the given ratio 10/18
Answer:
5/9
Step-by-step explanation:
All you have to do is simplify the ratio or multiply it by something.
Hope this helps!
Identify h (x) = [x] + 4
A.
direct variation function
B.
constant function
C.
absolute value function
D.
greatest integer function
Answer:A- direct variation function
Step-by-step explanation:
h(x) = [x] + 4 is in A. direct variation function as we increase the value of x the function h(x) will also increase and vice versa.
What is proportion?Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.
In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.
Given, h(x) = [x] + 4, as we increase the value of x the function h(x) will also increase and vice versa.
So, h(x) = [x] + 4 is in direct variation.
learn more about direct variation here :
https://brainly.com/question/14254277
#SPJ2
A geologist digs 5 feet down into the ground before taking a break. This process is repeated 3 times to create a hole that has a total depth of 15 feet. Which equation represents the hole’s depth in relation to ground level?
Answer:
38
Step-by-step explan
bc ik
Select three ratios that are equivalent to 8:58,
Choose 3 answers:
(Choice A)
A
16:10
(Choice B)
B
50:80
(Choice C)
C
48:30
(Choice D)
D
32:20
(Choice E)
E
64:35
Answer:
Step-by-step explanation:
Given expression:
The ratio equivalent to 8:58
let us first reduce this ratio to the simplest term:
Divide by 2;
4 : 29
A. 16: 10
Reduce to the simplest term by dividing by 2;
4 : 5
B . 50:80
Reduce to the simplest term by dividing by 10;
5 : 8
C. 48 : 30
Reduce to the simplest term by dividing by 6:
8 : 5
D. 32 : 20
Divide through by 4;
8 : 5
E. 64 : 35
Cannot be further simplified
The East River High School math teachers are buying ice cream cones for all of the algebra students. Dairy Queen charges a one time fee of $15 to deliver the treats to the school and each cone cost $2. Write an equation in y=mx+b form (NO SPACES) that can be used to find the total cost of ice cream cones for ERHS students.
Answer:
y = 2x + 15
Step-by-step explanation:
Let y represent the total amount paid by the teachers.
It is provided that the Dairy Queen charges a one time fee of $15 to deliver the treats to the school and each cone cost $2.
Let x represent the number of cones bought.
Then the equation that can be used to find the total cost of ice cream cones for ERHS students is:
y = 2x + 15
what is the solution of x-y=4 and 4x+y=1
Answer:
x= 4+y and the next answer is y= -4x+1
Step-by-step explanation:
First one solve for x and the other one I solved for y
Find f(-3) when f(x) = -x²+1
Answer:
3x²- 1
Step-by-step explanation:
f(-3) when f(x) = -x²+1
(-x²+1) × -3
3x²- 1
The distance between -2 1/4 and 1 1/2
Answer:
its 3 3/4 :)
Step-by-step explanation:
is 1,2 a function?
If it’s correct I will cashapp you :))
Answer:
yes
Step-by-step explanation:
Since there is one value of y for every value of x, this relation is a function.
The relation is a function.
If T is the midpoint of SU what are ST, TU, and SU?
Answer:
x=7, SU=63, TU=63, SU=126
Step-by-step explanation:
The mid point of SU is T meaning, ST=TU
we find value of x as 7.
replace x by 7 and find the value of given lines.
3. What is the slope of a line with the
equation y = 5x + 2?
/5
Answer:
5
Step-by-step explanation:
this is in slope intercept form or y=mx+b
m represents slope and m is 5
Answer: [tex]m = 5[/tex]
The slope of the line in this equation is 5.
y = mx + b
the m multiplied with x is the slope.
