Answers
Related Questions
A rock is thrown down from a cliff that is 180 m high. The function
h(t) = -5t^2 – 10t + 180 gives the approximate height of the rock
above the water, where h(t) is the height in metres and t is the time
in seconds. When will the rock reach a ledge that is 105 m above
the water?
Answers
Answer:
t = 3
Step-by-step explanation:
105 = -5t^2 -10t + 180
-75 = -5t^2 -10t
15 = t^2 +2t
t^2 +2t -15 = 0
(t+5)(t-3)
t = -5, 3
There's no such thing as negative time so you use the positive answer
Which of the following ordered pairs
make this equation true?
y = 3x - 2
A. (7,3)
B. (2,4)
C. (13,5)
D. (-1,5)
Answers
Answer:
B
Step-by-step explanation:
Identify the following as perfect squares, difference of squares, or trinomials.
Answers
PLEASE HELP I DONT KNOW THE ANSWER !! THIS IS ALGEBRA 2
Answers
Answer:
f(g(x)) = (5x)^2 = 25x^2
Step-by-step explanation:
If f(x) = x^2 and g(x) = 5x, then
f(g(x)) = (5x)^2 = 25x^2
Given that ABCD is a parallelogram. Find the following
Answers
Answer:
abcd is parallelogram and opposite sides of parallelogram are equal.
5x-9=3x+1
5x-3x=1+9
2x=10
10/2=x
5=x
bc=
5x-9=5×5-9
=16
ad=3x+1
=3×5-1
=15-1
=14
Is it a function? Explain
Answers
Answer:
Yes.
Step-by-step explanation:
For a graph to be a function, it must have precisely one y-value for every x-value.
In this case, this graph is a function because it meets the requirements of having one y-value for every x-value.
Let me know if this helps!
Which one is it ? (You cannot click it ) (22 points)!
Answers
Answer:
the answer is 0.01 your welcome
how to solve this one
Answers
A dotted line is not included in the solution so there is no equal sign.
The blue area is to the right of the dotted line so the solution is >
The line crosses the x axis at -2
The answer is : x-y > -2
A Kindergarten teacher observes that 65% of her students arrive in her class knowing the
alphabet letters. If she takes a random sample of 17 students, what is the probability that
10 will know their alphabet?
Answers
Answer:it is most lickley.
Step-by-step explanation:
1 4/8 + 2 2/8 = plzzzzzzzzzzzzzzzzzzzzzz
Answers
hope thst helps
Answer:
15/4
hope it's helpful ❤❤❤❤
THANK YOU.
#
PLSSS HELP IT'S THE LAST QUESTIONN 11. A ladder is leaning against the side of a house. If the ladder's base is 10 feet from the base of the house and the top of the ladder is 7.5 feet above the ground, how long is the ladder?
Answers
Answer:
17.5 is the correct answer
Answer:
12.5 ft
Step-by-step explanation:
7.5 squared and 10 squared
you add both of the squared numbers and then do the sqaure root of that number
please can someone actually help me with this! ( fake answers will be reported)
Answers
A circle is 360 degrees.
360-280=80
Y=80
110 80
—- • ——
7 x
Cross multiply
110x=560
X=approximately 5.1
Plz don’t report I’m not sure if I did it right.
Only use this as a last choice or if u have several try
se lanza una pelota verticalmente hacia arriba con una velocidad de 5m/s ¿cuál es el tiempo que dura la pelota en el aire?
Answers
9) Andres needs to save $97.50 for the seventh grade field trip. He has 15 weeks to save the money. If he saves the same amount of money each week, how much money must Andres save
Answers
Answer:
6.5
Step-by-step explanation:
97.50 divided by 15=6.5
1.8+ (-6)
How would I solve this? I need help
Answers
Answer:
-4.2
Step-by-step explanation:
1.8+ (-6)
Explain: 1.8-6
Helllllllllp. Please
Answers
Answer:
Orange area
area=x^2+x-12
Step-by-step explanation:
width=x+3
length=x-4
area=width x length
area=(x+3)(x-4)
area=x^2-4x+3x-12 = x^2+x-12
The square of the difference between a number and 10.
Answers
Answer:
an integer
Step-by-step explanation:
it is the correct answer
(x – 7x4 + 6) + (8x4 – 6 – 5x)
Answers
Answer:
The answer is x^4 - 4x
Step-by-step explanation:
Simplify the expression.
Hoped this helped!
Brainly, Please?
A salesman's commission rate is 6%. What is the commission from the sale of 36,000 worth of furnaces?
Answers
Answer:
2160
Step-by-step explanation:
36000*6/100=2160
I REALLY NEED HELP!!
Find the area of the composite figure
Answers
Answer:
I honestly don't know how to solve anything like this but my best guess is 135
Step-by-step explanation:
I used the area of a circle formula to find the area of the two semi-circles, and then added it to the area of the rectangle. (Once again, I really do not know xD)
find the quotient of $68.20 , 3.1
PLS HELP ME
Answers
Answer:
$68.20 divided by 3.1 = $22
Step-by-step explanation:
in a book containing 290 pages, Diana read 210 pages. What fraction of the book did she read?
Answers
Answer:
72% or 72.4%
Step-by-step explanation:
if the price continues to rise at a constant rate each year, what will be the price of a concert ticket in 2020?
Answers
Answer:
77.00
Step-by-step explanation:
the price is going by 1.50 a year so it would be 77.00 in 2020
Perform the following operation and express the answer in scientific notation. 6.900x1010 = 4.000x108 [?]x10 Coefficient (green) Exponent (yellow) Enter
Answers
9514 1404 393
Answer:
1.725×10²
Step-by-step explanation:
Your calculator or a spreadsheet can format the result of this division in scientific notation for you.
For the powers of 10, the applicable rule of exponents is ...
(10^a)/(10^b) = 10^(a-b)
__
[tex]6.900\times10^{10}\div4.000\times10^8=\dfrac{6.9}{4}\times10^{10-8}\\\\=\boxed{1.725\times10^2}[/tex]
Show work Plss oooooooo
Answers
Answer:
22.5 mins
Step-by-step explanation:
To find what that video's length must be, subtract the previous videos' lengths from the requirement, 5 hours. (x is the video length of her fourth video)
7/8 + 1 1/4 + 2 1/2 + x = 5
To make adding these fractions easier, find a common denominator.
7/8 + 1 2/8 + 2 4/8 + x = 5
4 5/8 + x = 5
x = 3/8, or 22.5 minutes.
Answer:
[tex]\frac{3}{8} \text{ hours.}[/tex]
Step-by-step explanation:
Her first three videos totalled up to
[tex]\frac{7}{8} + 1\frac{1}{4} + 2\frac{1}{2}\\=\frac{7}{8} + \frac{5}{4} + \frac{5}{2}\\=\frac{7}{8} + \frac{5}{4} \cdot \frac{2}{2} + \frac{5}{2} \cdot \frac{4}{4}\\=\frac{7}{8} + \frac{10}{8} + \frac{20}{8}\\=\frac{7+10+20}{8}\\=\frac{37}{8}[/tex]hours. To meet the [tex]5 = \frac{40}{8}[/tex] hour goal the shortest fouth video she can make is [tex]\frac{40}{8} - \frac{37}{8} = \frac{3}{8}[/tex] hours, because if the fourth video was any shorter, she'd end up with less than [tex]\frac{37}{8} + \frac{3}{8} = \frac{40}{8} = 5[/tex] hours in total (this is called a proof by contradiction). We are now done.
What is an algebraic expression for "41 more than y "?
Answers
y+14
There are 600 seats in the Marshall Middles School Auditorium. Students are sitting in 4/5 of the seats in the auditorium. Teachers are sitting in 55 of the seats. How many seats are not being used?
A. 60
B. 65
C. 70
D. 75
Answers
Answer:
B. 65
Step-by-step explanation:
600 * 4/5 = 480 seats used by students
55 teachers + 480 students= 535 seats used
600-535 = 65 seats left over
If d = 5, then
d3 equals
Answers
Answer:
15
Step-by-step explanation:
Multiply 5 by 3, 15
d=5
d3= 5(3)
5(3)=15
Marie is saving $75 each week so she can buy a new laptop which costs $1200. She has already saved $125. Find the minimum number of weeks she will have to save in order to be able to make this purchase.
Answers
Answer:
18 weeks
Step-by-step explanation:
Answer:
the minimum number of weeks she will have to save in order to be able to make this purchase is 15
Step-by-step explanation:
1200 divided by 75=16
and 75 go into 125 one time so u take and
16-1 =15
there for 15 is ur answer
please help me. i don't remember how to do this stuff so please explain it.
Answers
Answer:
which class are you read in?
actually don't know ans
Step-by-step explanation:
hope it's helpful to you
gud nyt
sweet dreams
Answer:
ncnggvbbjhgujgkgcffjd7jh
