Answer: 35
Step-by-step explanation:
The total number of students who voted is 35.
What is a percentage?A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.
Given:
A class votes for their class president Candidate A receives 21 votes, which is 60% of the vote.
The total number of students who voted,
= 21 x100 / 60
= 2100/60
= 35
Therefore, 35 students voted.
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can someone please help with my work!
Answer:
900 km i think
Step-by-step explanation:
umm so first 8*10=80%, then 4500-80%
Four standard, six-sided dice are to be rolled. If the product of their values turns out to be an even number, what is the probability their sum is odd? Express your answer as a common fraction.
Answer:
Your answer is 8/15.....
Brianna has $2.80 in quarters, dimes and nickels in her purse. She has nine more dimes than quarters and six more nickels than quarters. How many of each coin does she have?
Answer:
She has 4 quarters, 13 dimes, and 10 nickels in her purse
Step-by-step explanation:
Let q be the amount of quarters, d be the amount of dimes, and n be the amount of nickels she has in her purse. We can use this to set up a system of equations:
25q+10d+5n=280
This is because a quarter is 25 cents, a dime is 10 cents, and a nickel is 5 cents. We also have to convert $2.80 to cents since all our other values are in cents.
d=q+9
She has 9 more dimes than quarters
n=q+6
She has 6 more nickels than quarters
We can solve this system using substitution (substitute q+9 for d and q+6 for n)
25q+10(q+9)+5(q+6)=280
25q+10(q)+10(9)+5(q)+5(6)=280
25q+10q+90+5q+30=280
40q+120=280
Subtract 120 from both sides
40q=160
Divide both sides by 40
q=4
Now we plug this back into the other equations to find the amount of nickels and dimes
d=q+9=4+9=13
n=q+6=4+6=10
She has 4 quarters, 13 dimes, and 10 nickels in her purse
hellllllllllllllllllllllllllllllpppppp meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Answer:
That equals to 5x5x5 which 5x5x5 = 125
But the correct answer on that quiz is 1st I think
Step-by-step explanation:
Sorry if im wrong
la edad de selly. e es mayor que 15
please help with step by step.
Answer:
60 ÷ 15
= 4 mins
the constant of proportionality for the number of 4 minutes to read 1 page.
The graph of a function f is shown above. What is the value of [tex]\int\limits^7_0 {f(x)} \, dx[/tex]
==============================================
Explanation:
Split the graph into separate regions (see the diagram below)
The red trapezoid has the parallel vertical sides of b1 = 1 and b2 = 2. The height of the trapezoid is h = 2
The area of the red trapezoid is
A = h*(b1+b2)/2 = 2*(1+2)/2 = 3
--------------
The blue rectangle has a horizontal side of 2 and vertical side of 2. Its area is 2*2 = 4 square units.
--------------
The pink triangle has a base of 1 and height of 2
area = base*height/2 = 1*2/2 = 1 square unit
--------------
The green triangle has an area of base*height/2 = 2*2/2 = 2 square units
--------------
For any region above the x axis, it gets assigned a positive area. Anything below the x axis gets a negative area to counterbalance the positive areas.
The regions above the x axis add to 3+4+1 = 8 square units. Then we subtract off the area of the green triangle to get 8-2 = 6 square units.
Therefore, [tex]\displaystyle \int_{0}^{7}f(x)dx = 6[/tex]
In how many ways can a committee of three men and three women be formed from a group of eight men and seven women
==========================================================
Explanation:
Order doesn't matter when it comes to committees without rankings. Each person on the committee is of equal rank to anyone else. This means we'll use a combination instead of a permutation.
We have 8 men and 3 seats to fill for the men. Plug n = 8 and r = 3 into the nCr combination formula
n C r = (n!)/(r!(n-r)!)
8 C 3 = (8!)/(3!*(8-3)!)
8 C 3 = (8!)/(3!*5!)
8 C 3 = (8*7*6*5*4*3*2*1)/((3*2*1)*(5*4*3*2*1))
8 C 3 = (40320)/((6)*(120))
8 C 3 = (40320)/(720)
8 C 3 = 56
This means there are 56 ways to select the three men from a pool of eight.
Through similar steps, you should plug n = 7 and r = 3 into the nCr combination formula to get 7 C 3 = 35. This means there are 35 ways to pick the three women from a pool of seven.
Overall, there are 56*35 = 1960 ways to select the entire committee of 3 men and 3 women (from a pool of 8 men and 7 women).
2x
P
10nº
8 nº
R
S
x + 3
PQRS is a parallelogram. Find each measure.
RS-
type your answer....
angle S =
type your answer...
angle R=
type your answer...
Answer: The simplified sum is
Step-by-step explanation: we have
Which matrix respresents the system of equations shown below?
4x - 2y = 12
2x - 3y = 8
Answer:
Hey, kevinlopez1225, your answer is Number one!
Astradele
lots of points for correct answer!
Gina plotted the points (-3, 4), (4, 4), (-3, -2), and (4, -2) on the coordinate plane.
Determine the height of the quadrilateral. -
Determine the length of the quadrilateral. -
What shape do the points form?
What is the area of the quadrilateral?
What is the perimeter of the quadrilateral?
Answer:
height: 6 unitslength: 7 unitsshape: rectanglearea 42 square unitsperimeter: 26 unitsStep-by-step explanation:
Height
The height of it is the distance between the bottom and the top. You can count grid squares (6), or you can subtract y-coordinates:
4 -(-2) = 4 +2 = 6
The height of the figure is 6 units.
__
Length
The length is the difference between the left side and the right side. Once again, you can count grid squares (7), or you can subtract x-coordinates:
4 -(-3) = 4 +3 = 7
The length of the figure is 7 units.
__
Shape
The two upper points are on the same horizontal line, as are the two lower points. The two left-side points are on the same vertical line, as are the two right-side points. Vertical and horizontal lines are at right angles, so all of the corner angles are 90°. The quadrilateral is a rectangle.
__
Area
The area of the quadrilateral is the product of its length and height:
A = LH
A = (7 units)(6 units) = 42 units²
The area is 42 square units.
__
Perimeter
The perimeter is the sum of the lengths of the four sides. There are to sides that are 6 units long, and 2 sides that are 7 units long.
P = 2(6 +7) = 26
The perimeter is 26 units.
Can you please help
The area of a rectangle is 576 cm² and it's breadth is one-fourth of its length.Find the length and breadth of the rectangle.
Answer:
Hope this helps you.......
Step-by-step explanation:
[tex] \boxed{\blue{\frak{DisneyPrincess29}}}[/tex]
Answer:
breadth = 12 cm and Length is 48 cm
Explanation:
Let the length be x,
then the breadth will be [tex]\frac{1}{4}[/tex]x
Formula for area of rectangle:
length * breadth
using the formula:
x * [tex]\frac{1}{4} x[/tex] = 576
x² = 4(576)
x² = 2304
x = √2304
x = 48
Therefore the Length is 48 cm
Then the breadth [tex]\frac{1}{4}[/tex] * 48 = 12 cm
Betty is having invitations printed for a holiday party. It costs $3.90 to set up the printing machine and $2.44 per invitation. In the equation below, x represents the number of invitations Betty is having printed, and y represents the cost to print the invitations.
y = $2.44x + $3.90
How much will it cost Betty to print 100 invitations?
A.
$392.44
B.
$251.80
C.
$103.90
D.
$247.90
Answer:
D) $247.90
Step-by-step explanation:
Understanding the equation:[tex] \underline{\sf{y = 2.44x + 3.90}}[/tex]
y is the dependent function whereas x is the independent function.
(What does this mean?)
The values of y depend on the values of x, I.e., any change in the value of x causes a change in the value of y, meanwhile, the opposite doesn't happen.
x represents the number of invitations y represents the cost to print the invitationsThe cost to print the invitation depends on the number of invitations, for real.
Solution to the problem:The question asks us to find the cost of printing 100 invitations.
Substituting x for 100:
y = (2.44 × 100) + 3.90
y = 244 + 3.90
y = 247.90
Answer:The value of y obtained for x = 100 is the cost of printing 100 invitations – $ 247.90
Which of the following is not a right triangle?
a
30, 40, 50
b
9, 40, 41
c
24, 32, 40
d
40, 76, 86
Answer:
D) 40, 76, 86
Step-by-step explanation:
..........
Please HELP IN 10 MINS!!!!!!!!!!!!!!!!!!!!Lisa, Melinda, and Rahul love the same board game. The game must
be played by at least two people. Lisa can play every two days,
Melinda can play every three days, and Rahul can play every four
days. Today, all three played 1 game together. What is the total
number of games they will play from Day 1 to Day 50 if today is
Day 1? (Exactly 1 game is played per day.)
Answer:
25 games were played
Step-by-step explanation:
I first found how many games were played in 10 days
and then multiplied it by 5 to know how many games were played in 50 days
(but I am not sure if it is correct since it said that 1 game was played everyday and with rules I am not sure if it is even possible)
feel free to correct me
Answer: 17
Step-by-step explanation:
Lisa and Melinda will play together 8 times
Lisa and Rahul will play together 12 times
Melinda and Rahul will play together 4 times
So total games are 24 -- but they all will play together 4 times.
Since, "exactly 1 game is played per day", they cannot play 2 and 3 together at any day.
So total number will be: (8-4) + (12-4) + (4-4) = 12
Now, we must consider 4 where they played all 3 together; so total number: 12 + 4 = 16
Also, they already played 1 game at 1st day; so total number: 16 + 1 = 17
Amelia had 26 sea shells. Then, she collected 10 more sea shells. After that, she gave S sea shells to her little sister. Which of the following shows how many sea shells she has currently?
A. 26 + S + 10
B. 26 - 10 - S
C. 26 + S - 10
D. 26 + 10 - S
Answer:
26+10-S
Step-by-step explanation:
Answer:
26+10-S or 36-S
Step-by-step explanation:
She has 26 shells and collected 10 more
26+10
And the she gave her sister S shells
26+10-S or 36-S
Add the decimals.
3.0001 +72
=
Answer:
75.0001
Step-by-step explanation:
Used a calculator
standard from 4x100+7x10+6x1+6x(1/10)+3x(1/100)+7x(1/1000)
[tex]{{\boxed{{\tt{\color{blue}{✎A\color{red}{n\color{green}{s\color{lime}{w\color{skyblue}{e\color{cyan}{r\color{blue}{\color{purple}{}}}}}}}}}}}}}[/tex]
4x100+7x10+6x1+6x(1/10)+3x(1/100)+7x(1/1000)
[tex]x(4x {}^{99} + 7x {}^{9} + \frac{6637}{1000} [/tex]PLEASE HELP ME
ILL GIVE BRAINLIEST
Answer:
r=8cm/2=4cm
using Pythagoras theorem.
(Slant height)²=radius²+height²
slant height²=(4cm)²+(9cm)²
s²=16cm²+81cm²
s²=97cm²
s=(97cm²)⁰'⁵
s=9.8cm
hope it was helpful.
the slant height is 9.8cm
-7(5k - 4)
Simplify expression
Answer:
−35k+28
Step-by-step explanation:
the answer is -35k+28
i hope its right
The sum of several consecutive natural numbers is 2012. How many numbers were in that sum
Answer:
8
Step-by-step explanation:
first number = a, there are n numbers
so last number is a + n - 1
sum = [a + (a + n - 1)} * n/2 = (2a + n - 1) / 2 = 2012
n * (2a + n - 1) = 2012 * 2 = 4024
4024 is even, so n must be even, divisible by 2, 4, 8
4024 = 2 * 2012 = 4 * 1006 = 8 * 503
If n = 2, 2a + n - 1 = 2012, 2a + 2 - 1 = 2012, 2a = 2011, impossible.
If n = 4, 2a + n - 1 = 1006, 2a + 4 - 1 = 2a + 3 = 1006, 2a = 1003, impossible
If n = 8, 2a + n - 1 = 503, 2a + 8 - 1 = 2a + 7 = 503, a = 248
so n = 8, a = 248
What is the prob of an event that must happen.
Answer:
%100 Elon Musk going to Mars
Step-by-step explanation:
yes yes yes
i don't know if this is the answer you want
please mark brainliest i need 3 more
Suppose the mean GMAT score is 550 with a standard deviation of 100. Hayden takes the GMAT and is told his z-score is 2.5. Interpret the meaning of a z-score in this context. And what's Hayden's Score?
z-scores are used to describe normal distributions
The interpretation of a 2.5 z score is that, Hayden's score is 2.5 standard deviations below the 550
How to interpret the z-scoresThe z-score is given as:
z = 2.5
The mean and the standard deviation are:
Mean = 550
Standard deviation = 100
A z-score is the number of standard deviations above or below the mean.
Hence, a 2.5 z score is that, Hayden's score is 2.5 standard deviations below the 550
Read more about z scores at:
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factor 1/3 out of 1/3p-2/3
Answer:
[tex]\frac{1}{3}(p-2)[/tex] , 1/3(p-2)
Step-by-step explanation:
[tex]\frac{1}{3} p-\frac{2}{3}[/tex]
[tex]\frac{1}{3}(p-2)[/tex]
A class must have fewer than 18 students due to the number of desks that can be placed in the classroom. Write an inequality that represents this situation. Use the variable n to represent the number of students.
In order for a class to participate in the school's trivia contest, the class must have at least 15 students. Write an inequality that represents this situation.
Answer:
n < 18n ≥ 15Step-by-step explanation:
The wording "fewer than" is translated to the math symbol "less than". The variable n represents the number of students.
the number of students is fewer than 18
translates to ...
n < 18
__
The wording "at least" translates to the math symbol "greater than or equal to."
the number of students is at least 15
translates to ...
n ≥ 15
Multiply 3.4 x 104 times 2.1 x 108 by using scientific notation. Write your
answer in scientific notation.
(Round your answer to the nearest tenth.)
Answer:
[tex]7.14\times10^{12}[/tex]
Step-by-step explanation:
Given the following question:
[tex]3.4\times10^4\times2.1\times10^8[/tex]
In order to find the answer to this question we convert both scientific notations into standard form, multiply, and then convert back into scientific notation.
[tex]3.4\times10^4\times2.1\times10^8[/tex]
[tex]3.4\times10^4[/tex]
[tex]3.4\times10^4=3.4.0.0.0.=34000[/tex]
[tex]2.1\times10^8=2.1.0.0.0.0.0.0.0.=210000000[/tex]
[tex]34000\times210000000[/tex]
[tex]34000\times210000000=7140000000000[/tex]
[tex]7140000000000=7.14\times10^{12}[/tex]
[tex]7.14\times10^{12}[/tex]
Hope this helps.
Help please 10 points
Answer:
1, -2, -4, -6, -6.9, -6.99, -6.999
simplify the radical below
3√x^18
The radical is 3sqrt(x^18)
18/2=9
so, the radical is
3x^9
Two consecutive angles of a parallelogram are supplementary. 4. Always true C Never true 5 Sometimes true D. Sometimes false Which of the following statements are NOT TRUE about parallelograms? A Adjacent sides are congruent. e The opposite angles are congruent. C. Consecutive angies are supplementary Diagonals bisect each other. Two consecutive angles of a parallelogram have measures of (2x + 7 3x - 2)". What is the measure of the larger angle? A 103 C. 1339 B 73 D. 107 What is the measure of 22 in rhombus TRUE? 90" 80° 3/ 100 2 R Refer to the figure at rhombus TRUE in item 7. What is the measure of 21 is 100 A 80 C. 110 B 90 D 100° Which of the following group of quadrilaterals have diagonal tha perpendicular A Rectangle square C.Rhombus, rectangle Rhombus square D. Rectangle, rhombus, and s 10 Which of the following is NOT a characteristic of parallelograms? A Diagonals are angle bisector B. Diagonals bisect each other Opposite angies are congruent o Consecutive sides are congruent . We the following is NOT ar
Adjacent sides of a parallelogram are not congruent.
QuadrilateralA quadrilateral is a polygon with four sides and and four angles. A parallelogram has opposite sides parallel and equal. Two consecutive angles of a parallelogram are supplementary. Opposite angles and diagonals are congruent. The diagonals bisect each other.
(2x + 7) + (3x - 2) = 180 (consecutive angles)
x = 35°
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