Answer:
75 students
Step-by-step explanation:
100- 36=64
64%=48
36=????
36/64 × 48
= 27 girls
total 27+48=75 students
Answer:
48 / 64% = 75 students total
Step-by-step explanation:
18% of the the students at a school are in year 8 and 16% of the students are in year 9. If the school has 126 tera 8 students, determine the number of year 9 students.
Answer:
112
Step-by-step explanation:
The general form of all percentage questions is: the chunk= (some percentage) (of the whole), or c=p*w
We know that 18% of students are 8th grade and that is 126 students, so p = 0.18 and c=126 (126 students are 18% of the whole school)
126 = (0.18)w, divide both sides by 0.18
126/(0.18) = w = 700
9th graders are 16% of the school or 16% of 700 students
c = (0.16) 700 = 112 students
Desmond is rolling a standard six-sided number cube. He plans to roll it 72 times. About how many times would you expect him to roll an even number? Why?
Answer:
Step-by-step explanation:
3 even numbers are on a number cube. So, 1/3.
1/3 x 72 = 24
Desmond would roll an even number 24 times.
(50 POINTS)
What is the equation of the line that passes through the points (2,6) and (4, 10)?
A: y=2x+4
B: y=2x-2
C: y=2x-4
D: y=2x+2
Answer:
the answer is D: y=2x+2
Step-by-step explanation:
Hope this helps!
Answer:
y=2x+2 (D)
Step-by-step explanation:
Used desmos to plot the points into an equation.
1. 2a+b-c
A. O
B. 1
C. 3
D. 4
Answer:
i think C correct me if im wrong pls
Step-by-step explanation:
1.7 m+ 3.7 m +3.7 m +3 m +5.9 m
answer:
18 m
step-by-step explanation:
simply add up all the numbers given1.7 + 3.7 + 3.7 + 3 + 5.9 = 18 then, put the units givenAnswer:
18m
Step-by-step explanation:
(1.7 + 3.7 + 3.7 + 3 + 5.9)m = 18m
Hope that helps!
Chang has nine new magazines to read
Let M be the number of magazines he would have left to read after reading R
of them
Answer:
Step-by-step explanation:
M=9-R is the equation for it
Decrease 60 by 0.75 of itself
Answer:
15
Step-by-step explanation:
(0.75 of 60)
0.75 * 60 = 45
(decrease 60 by answer)
60 - 45 = 15
Swimming pool was 9 meters wide with an area of 90 square.What is the length of the pool?
Answer:
If the area is 90 square meters then, the answer is 10 meters long (length.)
Step-by-step explanation:
Which number is the value of f–1(–2)?
Answer:
f+2
Step-by-step explanation:
Wrong, the answer is 1 on Edge..
Can Someone Help, Pleasee. ?
Answer:
y = -2/3x + 6 (last option)
Step-by-step explanation:
A parallel line has the same slope as the original line. Since y = -2/3x+6 and y = -2/3x +1 have the same slope, the answer is the last option
Answer:
the last one.
Step-by-step explanation:
It has to have the same angular coefficient (-2/3 in this case)
BEST GETS BRAINLIEST PLS HELP I JUST NEED CONFIRMATION THAT I GOT IT RIGHT
Answer:
that is correct nice job!
Answer:yuh youre right
Step-by-step explanation:
Angelo's yearly salary increased from $18,575 to $21,000 What was the monthly increase? Round your answer to the nearest dollar?
Answer:
The answer is 1750 dollars more than his other yearly salary.
Step-by-step explanation:
I am super sorry if it is wrong. It might be.
A tile pattern on a wall is made up of two identical parallelograms and three identical triangles.
What is the area of the tile pattern?
Enter your answer in the box.
______
|___| in2 ( i tried my best to do a box)
Answer:
448 in²
Step-by-step explanation:
2 parallelograms = 2x10x14=280
3 triangles = 3x1/2x14x8=168
280+168=448 in²
If Maya orders a $1.89 drink, 3 cookies at $.99 each, and 2 slices of pizza at $2.50 each. How much did Maya pay for her order?
ASAP PLZ IM DOING A TEST
Answer:
$9.86
Step-by-step explanation:
Frist you read the problem and you see that she pays $1.89 for one drink
so you write down $1.89
then 3 cookies for $0.99 so you multiply $0.99 by 3 and you get $2.97
so you write down $2.97
next 2 slices of pizza for $2.50 so you multiply 2 by $2.50 and you get $5.00
so you write that down
lastly you and the answers you wrote down and you get $9.86
Maya payed $9.86 for her order.
Last year, Greg got a new job managing the gift shop at the Bern Valley Zoo. One of his responsibilities was to track the shop's total sales each day. This box plot shows the results. Gift shop sales ($) 200 250 300 350 400 450 What percent of the time did the gift shop have sales of $350 or less? %
Answer:
Step-by-step explanation:
There were 4 days when sales were 350 or less out of 6 days so
100(4/6)=400/6=[tex]66\frac{2}{3}\% $ or rounded to 66.67% $ [/tex]
The percentage of the time did the gift shop have sales of $350 or less should be considered as the 66.67%.
Calculation of the percentage:Sinceas we can see that there are total 6 things out of which 4 should be within 350 or less than 350
So here the percentage be like
[tex]= 4\div 6[/tex]
= 66.67%
Hence, The percentage of the time did the gift shop have sales of $350 or less should be considered as the 66.67%.
Learn more about percentage here: https://brainly.com/question/24552083
How long does it take an account with a principal of $500 to earn $75 in interest at a simple annual interest rate of 3%?
Answer:
about 5 years
Step-by-step explanation:
year 1)500*0.03= 15
year 2)515*0.03= 15.45+515=530.45
year 3)530.45*0.03= 15.91+530.45=546.36
year 4)546.36*0.03=16.39+546.36=562.75
year 5)562.75*0.03=16.88+562.75=579.63
The number of typos made by a student follows Poisson distribution with the rate of 1.5 typos per page. Assume that the numbers of typos on different pages are independent. (a) Find the probability that there are at most 2 typos on a page. (b) Find the probability that there are exactly 10 typos in a 5-page paper. (c) Find the probability that there are exactly 2 typos on each page in a 5-page paper. (d) Find the probability that there is at least one page with no typos in a 5-page paper. (e) Find the probability that there are exactly two pages with no typos in a 5-page paper.
Answer:
a) 0.8088 = 80.88% probability that there are at most 2 typos on a page.
b) 0.0858 = 8.58% probability that there are exactly 10 typos in a 5-page paper.
c) 0.001 = 0.1% probability that there are exactly 2 typos on each page in a 5-page paper.
d) 0.717 = 71.7% probability that there is at least one page with no typos in a 5-page paper.
e) 0.2334 = 23.34% probability that there are exactly two pages with no typos in a 5-page paper.
Step-by-step explanation:
Poisson distribution:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
In which
x is the number of sucesses
e = 2.71828 is the Euler number
[tex]\mu[/tex] is the mean in the given interval.
Binomial distribution:
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
The number of typos made by a student follows Poisson distribution with the rate of 1.5 typos per page.
This means that [tex]\mu = 1.5n[/tex], in which n is the number of pages.
(a) Find the probability that there are at most 2 typos on a page.
One page, which means that [tex]\mu = 1.5[/tex]
This is
[tex]P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2)[/tex]
In which
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
[tex]P(X = 0) = \frac{e^{-1.5}*(1.5)^{0}}{(0)!} = 0.2231[/tex]
[tex]P(X = 1) = \frac{e^{-1.5}*(1.5)^{1}}{(1)!} = 0.3347[/tex]
[tex]P(X = 2) = \frac{e^{-1.5}*(1.5)^{2}}{(2)!} = 0.2510[/tex]
[tex]P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2) = 0.2231 + 0.3347 + 0.2510 = 0.8088[/tex]
0.8088 = 80.88% probability that there are at most 2 typos on a page.
(b) Find the probability that there are exactly 10 typos in a 5-page paper.
5 pages, which means that [tex]n = 5, \mu = 5(1.5) = 7.5[/tex].
This is P(X = 10). So
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
[tex]P(X = 10) = \frac{e^{-7.5}*(7.5)^{10}}{(10)!} = 0.0858[/tex]
0.0858 = 8.58% probability that there are exactly 10 typos in a 5-page paper.
(c) Find the probability that there are exactly 2 typos on each page in a 5-page paper.
Two typos on a page: 0.2510 probability.
Two typos on each of the 5 pages: (0.251)^5 = 0.001
0.001 = 0.1% probability that there are exactly 2 typos on each page in a 5-page paper.
(d) Find the probability that there is at least one page with no typos in a 5-page paper.
0.2231 probability that a page has no typo, so 1 - 0.2231 = 0.7769 probability that there is at least one typo in a page.
(0.7769)^5 = 0.283 probability that every page has at least one typo.
1 - 0.283 = 0.717 probability that there is at least one page with no typos in a 5-page paper.
(e) Find the probability that there are exactly two pages with no typos in a 5-page paper.
Here, we use the binomial distribution.
0.2231 probability that a page has no typo, so [tex]p = 0.02231[/tex]
5 pages, so [tex]n = 5[/tex]
We want P(X = 2). So
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 2) = C_{5,2}.(0.2231)^{2}.(0.7769)^{3} = 0.2334[/tex]
0.2334 = 23.34% probability that there are exactly two pages with no typos in a 5-page paper.
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA POINTS*..
IM GIVING 40 POINTS !! DONT SKIP :((.
Answer:
m=2, b=2
y=2x+2
The slope is positive, and the equation is proportional.
Answer:
m = 2 b = -1
equation: y = 2x -1
Proportional and a positive slope
5x-8y=29 find y when x= -1
Answer:
-4.25
Step-by-step explanation:
When x = -1, the equation is 5(-1) - 8y = 29. This simplifies to -5 - 8y = 29. Add 5 to both sides to get -8y = 34. Divide -8 from both sides to get y = -4.25.
Hope it helps!
HELLPPPPP AGAIN PLSSSSSSS COME ON MATHS
Step-by-step explanation:
according to question triangle is concurrent so two traingle= 1rectangle
so finally ans is 6×2(12+2)=168
Which option equals tan 40°? Select all that apply.
A) sin50°/cos 50°
B) cos50°/sin 50°
C) cos40°/sin 40°
D) sin40°/cos 40°
Simplify the fractions using the greatest common factor and division 4/8 =
Answer:
2/4
Step-by-step explanation:
use prime factorization to find the greatest common factor of 56 and 84
Answer:
28
Step-by-step explanation:
Hope this helped.
Papi has 148 slices of pizza in his shop. He sells 56 slices. How many slices does Papi have left? Draw a math Mountain to solve each word problem.
Answer:
92
Step-by-step explanation:
148 - 56 = 92
Hope this helped
Answer:
The answer is 92
Step-by-step explanation:
148 - 56 = 92
Need help On question 1. for geo
Classify by angle = obtuse (one angle in the triangle is obtuse)
Classify by sides = isosceles (has two equivalent sides)
Triangle 2 :Classify by angles = right (an angle in the triangle is equal to 90°)
Classify by sides = scalene (none of the sides in this triangle is equal)
Helpppp i dont understand
Find the value of x y and m
Answer:
x = 33
y = 66
m<BGK = 71°
Step-by-step explanation:
✔️(2x + 5) + (3x + 10) = 180° (consecutive interior angles)
Solve for x
2x + 5 + 3x + 10 = 180
Add like terms
5x + 15 = 180
5x = 180 - 15 (subtraction property of equality)
5x = 165
Divide both sides by 5
x = 33
✔️(2x + 5) = (y + 5) (alternate interior angles are congruent)
Plug in the value of x
2(33) + 5 = y + 5
66 + 5 = y + 5
71 = y + 5
71 - 5 = y
66 = y
y = 66
✔️m<BGK = (y + 5) (vertical angles)
Plug in the value of y
m<BGK = (66 + 5)
m<BGK = 71°
simplyfly
x+3/x-5 - x+5/x-3
Answer:
-8x - 8
_____
8
Step-by-step explanation:
Answer:
16/(x-3)(x-5)
Step-by-step explanation:
The graph of the function F(x)= x2
is shown above. Which of the functions below would be a reflection of AX) across the x-axis?
Answer:
d is the answer of graph function
The figure has an area of 42 yd? Which equation can be
used to find the value of x?
A 13x + 1 = 42
B 14x = 42
C 15x -1 = 42
D 16x=42
Answer:
B. 14x = 42
Step-by-step explanation:
The figure is composed of a rectangle and a trapezium
(L*W) + [½(a + b)h] = Area of the figure
Where,
Area = 42
L = 2x
W = 3
a = 3 + 4 = 7
b = 9
h = x
Plug in the values
(2x*3) + [½(7 + 9)x] = 42
6x + [½(16x)] = 42
6x + 8x = 42
14x = 42