Answers
Answer:
a) 80%
b) 20%
90 plus 70 divided by 200 x 100
=160/200
=0.8
0.8x100= 80% of passing
100-80= 20
20% of both failing
Related Questions
A book contains 800 pages and 2 of those pages have pictures.
What percent of the pages in the book have pictures?
Enter your answer as a decimal or as a fractiohfin simplest form in the box.
Answers
Answer: 0.25 percent.
Step-by-step explanation:
You know that you have 800 pages. So, 2 out of 800 is 0.25 percent.
I need some help with this one.
Answers
Answer:
B
Step-by-step explanation:
In the middle of the kite, there are 4 angles that are the same (90*)
So using the given angle 54 and the 90* we can find the last angle
54 + 90 = 144
180 - 144 = 36
The left-over angle is 36*
A rocket was launched into the air from a podium 6 feet off the ground. The rocket path is represented by the equation h(t)=-16t2+120t +6, where h(t) represents the height, in feet, and t is the time, in seconds. Find the average rate of change from the initial launch to the maximum height.
Answers
Answer:
60
Step-by-step explanation:
The given function is:
The average rate of change of h(t) from t=a to t=b is given by:
We can rewrite this function as:
The maximum height of the rocket is 231 and it occurs at t=3.75
The initial launch occurs at: t=0
and
The average rate of change from the initial launch to the maximum height is
The average rate of change from the initial launch to the maximum height is 59.21 ft/s.
We have a equation that represents the Rocket path.
We have to find the average rate of change from the initial launch to the maximum height.
What do you mean by a Time - varying quantity ?A time varying quantity is the quantity whose absolute value change with time. For example - y = f(t) = 2t - 1 , where y is the displacement and it varies as y = 2t - 1 with time.
According to the question, we have -
Equation → [tex]h(t) = -16t^{2} +120t+6[/tex]
Height of podium → 6 feet.
Initial velocity (u) = 0
Now -
[tex]h(t) = - 16t^{2} +120t+6[/tex]
Differentiating w.r.t time, we get →
[tex]$\frac{dh}{dt} = - 32t + 120[/tex]
For maximum height → [tex]$\frac{dh}{dt} = 0[/tex]
-32t + 120 = 0
32t = 120
t = 3.8 seconds
This means that at t = 3.8 seconds the rocket will reach its maximum height. Therefore, the maximum height will be -
h(t) = - 16 x 3.8 x 3.8 + 120 x 3.8 + 6
h(t) = - 231.04 + 456 + 6
h(t) = 224.96 + 6
h(t) = 230.96 = 231
The maximum height reached by the rocket is 231 feet's.
Now -
Initial height = 6 feet
Initial time = 0 s
Final height (max) = 231
Time at maximum height = 3.8
Therefore, the average rate of change from the initial launch to the maximum height will be -
[tex]$v_{avg} = \frac{231-6}{3.8-0}=59.21[/tex]
v (avg) = 59.21 ft/s
Hence, the average rate of change from the initial launch to the maximum height is 59.21 ft/s
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You have $20 to spend on pizza. It costs $16 plus $1.25 for each additional topping, tax included. a) Write an inequality to determine the maximum number of toppings the pizza can have. b) Solve the inequality from part a. c) Use your answer to decide how many toppings you can get on your pizza. *You can't get part of a topping!
Answers
Answer:
3 toppings??, sorry if its wrong im confused on the last part (c)
Step-by-step explanation:
16+1.25x≥20
-16 -16
1.25x ≥4
1.25 ≥ 1.25 4/1.25=
x ≥ 3.2
How do you find the probability of getting one correct?
Answers
Answer: The probability she gets at least one right is 1 minus this, or 0.988470785. In other words, she has an approximately 99% chance of getting at least one right.
Step-by-step explanation: IF CORRECT MARK ME BRAINLIEST
Line m passes through point (-2,-1) and is perpendicular to the graph of y=-2/3x+6. Line n is parallel to line m and passes through the point (4,-3). What is the equation in slope-intercept form of line n?
Answers
keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above
[tex]y=\stackrel{\stackrel{m}{\downarrow }}{-\cfrac{2}{3}} x+6\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}[/tex]
well, we know that "m" is perpendicular to the line above, so that means that line "m" has a slope of
[tex]\stackrel{~\hspace{5em}\textit{perpendicular lines have \underline{negative reciprocal} slopes}~\hspace{5em}} {\stackrel{slope}{-\cfrac{2}{3}} ~\hfill \stackrel{reciprocal}{-\cfrac{3}{2}} ~\hfill \stackrel{negative~reciprocal}{-\cfrac{3}{-2}\implies \cfrac{3}{2}}}[/tex]
keeping in mind that parallel lines have exactly the same slope, and since we know that "n" is parallel with "m", that means that if "m" has a slope of 3/2 than "n" must have the same slope.
so we're really looking for the equation of a line whose slope is 3/2 and passes through (4 , -3)
[tex](\stackrel{x_1}{4}~,~\stackrel{y_1}{-3})\qquad \qquad \stackrel{slope}{m}\implies \cfrac{3}{2} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-3)}=\stackrel{m}{\cfrac{3}{2}}(x-\stackrel{x_1}{4}) \\\\\\ y+3=\cfrac{3}{2}x-6\implies y=\cfrac{3}{2}x-9[/tex]
please help me !!! please The area, A, in square feet, of the base of a rectangular storage bin in a warehouse is given by the function A(x)=−2x^2+36x, where x is the width, in feet, of the storage bin. John said that factoring would be a more efficient way to solve for the maximum area compared to completing the square. Do you agree or disagree with John? I must Explain.
Answers
The area of the garden is the amount of space it occupies
John's claim is not true
How to determine if John's claim is trueThe function is given as:
[tex]A(x) = -2x^2 + 36x[/tex]
To determine the maximum area, we do not need to factorize the expression or apply completing the square.
Hence, John's claim is not true
Read more about areas at:
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Evaluate:
–7.68 (–1.6)
A. –48
B. –4.8
C. 4.8
D. 48
Answers
In conclusion answer is D for anyone who did not read explanation above
Your Answer Should Be C.
I need help please
Answers
Answer:
1+1=2
Step-by-step explanation:
Given that 10 cm is approximately equal to 4 inches, which of the following expressions models a way to find out approximately how many inches are equivalent to 350 cm?
A
350×(104)
B
350×(410)
C
(10−4)×350
D
(350−10)×4
Answers
Answer: I don't Know
Step-by-step explanation: Thanks for the point tho :)
What is the slope of the line that passes through the points (4,7) and (7, 16)? Write
your answer in simplest form.
Answers
Your answer would be either:
[tex]\frac{3}{1}[/tex] or just 3
Step-by-step explanation:
To solve, we used Rise over run [tex]\frac{rise}{run}[/tex]
m = [tex]\frac{16-7}{7-4}[/tex] we get 9/3 and simplify it to 3/1 or 3
I need a lot of help sooo….
Answers
What is the value of x?
Answers
Answer: 3√2
Step-by-step explanation:
The middle line is also 3 so if you use a^2 + b^2 = c^2 you can find the hypotenuse
Mr. Appleman own a rectangle apple orchard that measure 18m long and has a diagonal length of 25m. What is the width of his Orchard to the nearest the tenth of a metre?
Answers
Answer:
length = 17.3 m
Step-by-step explanation:
Rectangles have four right angles, so the diagonal and its sides will form a right triangle. This allows us to use the Pythagorean Theorem to find the length.
l^2 + 18^2 = 25^2
sqrt l^2 = sqrt (25^2 - 18^2), where l = 17.349 = 17.3 m
If $5000 is invested at a rate of 3% interest compounded
quarterly, what is the value of the investment in 5 years?
(Use the formula A = P (1 + )", where A is the amount
accrued, P is the principal, r is the interest rate, n is the
number of times per year the money is compounded, and t
is the length of time, in years.)
Answers
Answer:
$5805.92
Step-by-step explanation:
A= P(1+i)^n
= 5000(1+3%/4)^5×4
=$5805.92
someone help it’s urgent! I’ll brainlist you.
Answers
Answer:
Constant: -17
Coefficient: 7
Number of terms: 3
Step-by-step explanation:
Constant: -17
-> This is the number that doesn't change. No matter what m or p is, -17 will be -17
Coefficient: 7
-> The coefficient is the number next to the variable. In this case, the number "with" (being multiplied by) p is 7
Number of terms: 3
-> There are three terms. A term includes positive/negative, number, variables, etc.
-> The terms are:
[] [tex]9m^{4}[/tex]
[] [tex]7p[/tex]
[] [tex]-17[/tex]
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
an event has even odds when the odds in favor of (or against) the event are 1:1. What is the probability of an event with even odds?
Answers
Answer:
1:1
Step-by-step explanation:
have a good day friend :)
Determine if the statement is true or false.
11 = 4 (mod 7)
Answers
Answer:
false
Step-by-step explanation:
11 ≠ 4
11=11
4=4
Calculate the area of the right triangle that has vertices at A(626, 200), B(726, 200), and (025,10)
Answers
Answer:
Calculate the area of the right triangle that has vertices at A(626, 200), B(726, 200), and (025,10)
Under her cell phone plan, Leah pays a flat cost of $42 per month and $4 per
gigabyte. She wants to keep her bill at $48.80 per month. Write and solve an
equation which can be used to determine g, the number of gigabytes of data Leah can
use while staying within her budget.
Answers
Our goal is to isolate g. We can do that by subtracting 42 from both sides. This gives us 4g = 6.8. Then, we need to divide both sides by 4. This gives us g = 1.7.
The equation we can use to represent this situation is 4g + 42 = 48.80, and she can only spend 1.7 gigabytes or less to stay within her budget. (I am not sure if 1.7 should be rounded, but if so, it should be rounded down to 1.)
Point P, located at (-3, -4), is reflected across the y-axis.
What are the coordinates of this point after this transformation?
A. (3, -4)
B. (3, 4)
C. (4, 3)
D. (-3, 4)
Answers
Answer:
A. (3,-4)
Step-by-step explanation:
The rule to follow for reflecting a point across the y-axis is to take the original coordinate (x, y) and change it to (−x, y)
A cone-shaped container is completely filled with liquid. The container has a radius of 60 cm and an height of 210 cm. The liquid is drained from the container at a rate of 1099 cm³ per hour. How many hours will it take to drain all of the liquid? Use 3. 14 to approximate pi. Enter your answer in the box. Hours.
Answers
Find the volume of the cylinder to know how much liquid is in it:
volume of a cylinder = Pi x r^2 x height.
Volume = 3.14 x 60^2 x 210
Volume = 2,373,840 cubic cm
now to find the length of time divide total cubic cm by the drainage rate:
2,373,840 / 1099 = 2,160 hours
Answer: 2,160 hours
how do i solve –1.8c + 5.1d for c = 2.9 and d = -4.2.
Answers
Answer:
See below
Step-by-step explanation:
-1.8c + 5.1d plug the numbers in that you were given.
-1.8(2.9) + 5.1(-4.2)
Multiply the first and second group of numbers
-1.8 x 2.9 = - 5.22
5.1 x -4.2 = - 21.42
Now add the two numbers together but remember they are both negative numbers. So when you add them together, it will end up being a more negative number.
-5.22 + -21.42 = - 26.64
Which of the following has the solution set
{}?
o |x| > 5
o |x| < -5
o |x|< 10
o |x|> -10
Answers
Answer:
why?
Step-by-step explanation:
What must be added to 70 so it will divide exactly into five groups of 16
Answers
Answer:
10
Step-by-step explanation:
[tex]x+70=16(5)\\\\x+70=80\\\\x=10[/tex]
Therefore, the number is 10
What is the y‐intercept of the graph of y=5x ?
5
1
25
0
Answers
Answer:
0 is your y intercept and 5 is the x intercept
Prem has $45000 to invest for 1 year. The bank tells him the interest rate is 6%. Calculate how much the investment is worth at the end of the year…
1) If the interest is paid every 6 months
2) If interest is paid quarterly
Answers
Answer:
1) $47,740.50
2) $47,761.36
Step-by-step explanation:
hope this helps :)
You are considering making a major purchase on your credit card. You should ask yourself the following questions, except which answer choice? a. Would it cost me less if I came up with a different purchasing plan? b. What else can I purchase to reach my full credit limit? c. Will I receive any incentives from my credit card company for making this purchase? d. How much will my purchase really end up costing if I don’t pay off the balance immediately? Please select the best answer from the choices provided A B C D.
Answers
Answer:
D would be the wisest choice.
Step-by-step explanation:
Consider the taxes and extra expenses the purchase may have. They may raise the actual payment, plus if you don't pay the balance immediately it'll keep growing and growing until you're in deeper debt.
Hope this helped, have a nice day!
In a data set, the number of items that are in a particular category is called the.
Answers
In a data set, the number of items that are in a particular category is called the frequency
What is frequency?Frequency can be defined as the number of items that are in a particular category in a data set.
It is also described as the number of times the value \appears in the data set.
The distribution of a variable is defined by the pattern of frequencies, this means that, the set of all possible values and the frequencies associated with these values
Frequency distributions are also portrayed as frequency in tables or charts,
It is also important to note that relative frequency is the proportion of items in a particular category in a data set.
Hence, it is the frequency
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Need help please I only have 50 more min to turn this in so can anyone help