Question complète:
150 garçons et 250 filles sont inscrits au conservatoire. 20% des garçons et 30% des filles sont pianistes. Calculer le pourcentage de pianistes au conservatoire
Répondre:
26,25%
Explication étape par étape:
Nombre de garçons = 150
Nombre de filles = 250
Pianiste masculin = 20% des garçons
Pianiste masculin = 0,2 * 150 = 30 garçons
Pianiste féminine: = 30% des filles
Pianiste féminine = 0,3 * 250 = 75 filles
Nombre total de pianistes:
(30 + 75) = 105 pianiste
Population du conservatoire = (150 + 250) = 400
Pourcentage de pianiste:
105/400 * 100%
0,2625 * 100%
26,25%
Hitoshi spends 30 minutes an history homework, 60 minutes on English homework, and x minutes on math homework, one fourth of his total homework time is spent on math which equation can be used to find the amount of time Hitoshi spends on his math homework
The price of a video game system dropped by 18%. What is the current price if it used to be $140?
Answer:
$114.80
Step-by-step explanation:
Multiply 18% and 140 to find the drop price.
.18 x 140= $25.20 now subtr. this from the original price
$140.00-$25.20=$114.80 is the sale price
What is the value of in the solution of the
system of equations 3x + 2y = 12 and 5x – 2y = 4?
Answer:
x = 2
y = 3
Step-by-step explanation:
add the 2 together and the y-values drop out and you are left with:
8x = 16
x = 2
3(2) + 2y = 12
2y = 6
y = 3
please help me!! 8th grade math, Pythagorean Theorem
Answer:
Step-by-step explanation:
-To find the incline do:6^2+14^2=x^2
Than whatever your 6 and 14 equal, find the square root of it
A) are un număr de 6 vârfuri, 9 muchii, 5 feţe. b) bazele prismei sunt ......................................................................... c) muchiile laterale sunt .......................................... Pe planele bazelor. 2) Pentru o prismă triunghiulară regulată cu latura bazei de 6 cm şi înălţimea de 43cm: a) suma lungimilor tuturor muchiilor este de .................. Cm; b) aria bazei este de ......... Cm2; c) aria laterală este de ......... Cm2; d) aria totală este de ......... Cm2; e) volumul este de ......... Cm3.
Answer:
A
Step-by-step explanation:
Nalani says the expression 9+7r cannot be factored using the GCF. Is she correct? Explain why or why not
Answer:
Nalani is correct.
Step-by-step explanation:
Given - Nalani says the expression 9+7r cannot be factored using the GCF.
To find - Is she correct? Explain why or why not.
Proof -
GCF - Greater Common factor
Given that, the expression is - 9 + 7r
As
HCF(9, 7) = 1
So , we can not factor the expression.
i.e. there does not exist any number who is a multiple of 9 and 7 both.
So,
Nalani is correct.
Example -
Let the expression be 24 + 18x
HCF(24, 18) = 6
So,
24 + 18x = 6(4 + 3x)
Evaluate the function.
f(x)= -2x^2 + 8x - 10
Answer:
i think its f(x)=-2(x-2)(by the power of 2)-2
Step-by-step explanation:
factorize (x+3)+5(x+3)
6x + 18, that is the answer
Find the value of angle A and angle B
Pls help me with those questions ):
Answer:
5) A= 153
B= 27
6) A= 80
B= 100
7) A=88
B=92
8) A= 30
B= 150
Step-by-step explanation:
if you look closely all the values are equal to those opposite of them
sorry if its wrong
Find the volume of the rectangular
prism
[?] units3
18
16
22
pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp its 22Step-by-step explanation:
please someone help me with this iready question id appericiate it xx
Answer:
3
Step-by-step explanation:
Because y/x=k and the point you're given is (5,15), so when you use the formula on that point it would be 15/5, which would simplify into 3/1 or 3.
Write in Slope-Intercept Form an equation of the line that passes through the given points.
(-3,1) and (3,9)
Answer:
do u hate people like that to who tell you to downlaod viruses
Step-by-step explanation:
821 X ______ = 8,210
decrease £85 by 20%
help plssss
Answer:
68
Step-by-step explanation:
(1a) There is a closed carton of eggs in Mai's refrigerator. The carton contains e eggs and it can hold 12 eggs. What does the inequality e<12 mean in this context?
Answer:
e<12 mean in this context means that the number of eggs in the carton is not up to 12
Step-by-step explanation:
The number of eggs in the carton = 12
The capacity of egg carton is depicted as e
Hence, the inequality e<12 in this context means that :
The number of eggs in the carton is less than the capacity of the egg carton
Thus we can conclude that the number of eggs in the carton is not up to 12, which is the number of eggs the carton can hold.
Kiran’s mother gets a restaurant bill for $25.
She has a coupon for 15% off.
After the discount is applied, she adds 20% as a tip.
What is the total after the discount and tip? Explain or show your reasoning.
Answer:
$25.46
Step-by-step explanation:
3. Choose the equation of the line parallel to the line 5 = -10x - 5y that passes through the point (-2,5). A y=-2x + 1 C y=x-5 By=-12x + 5 D y = 5x + 11
Answer:
y = -2x + 1
Step-by-step explanation:
The equation is in standard form, first, we need to convert it to slope-intercept form.
5 = -10x - 5y
5 + 10x = -5y
Divide both sides by -5 to isolate y variable.
y = -2x - 1
If the line is parallel, the slope remains the same.
To find the y-intercept, you need to plug the values of x and y into the equation, which is y = 2x + b
5 = -2(-2) + b
5 = 4 + b
1 = b
The equation is -2x + 1
Find the indicated side of the
triangle.
a
7.
30°
D
b = [ ? IV
Ed solved a puzzle 3/4 faster than Brett. Brett solved the puzzle in 135 seconds. How long did it take Ed to solve the puzzle.
Answer:
101.25 seconds.
Step-by-step explanation:
We know that Ed solved the puzzle 3/4 faster than Brett.
Then if Brett solved the puzzle in a time T, Ed solved the puzzle in a time (3/4)*T.
We know that Brett solved the puzzle in 135 seconds, then:
T = 135s
This means that Ed solved the puzzle in:
time = (3/4)*T = (3/4)*135s = 101.25 seconds.
Which phrase describes the shape of the data? Please help I will give brainleist
sunglasses cost 70 euros. the exchange rate is 1 euro = 0.859
Answer: 60.13 USD
Step-by-step explanation: 0.859 x 70 = 60.13
*PLEASE HELP ME* (math attachment) IT'S PAST MIDNIGHT I'M TIRED AND DESPERATE
D
Step-by-step explanation:let's rewrite this
x + y = 11 - equation 1
- x = - y - 9 - equation 2
solve the first equation for x
x + y = 11 (add -y to both sides to get x by itself)
x = -y + 11 - equation 3
now substitute -y + 11 for x in the second equation
y - 11 = - y - 9 (2 negative signs next to each other equals positive)
2y - 11 = -9 (add y to both sides)
2y = 2 (add 11 to both sides)
y = 1 (divide both sides by 2)
now substitute y = 1 into equation 3
x = -1 + 11
x = 10
therefore, x = 10 and y = 1. in coordinates, x goes before y
therefore, the coordinates are (10, 1)
therefore the answer is D
good luck my friend! hope this helped a lot! also, i found a website if you don't fully understand this, its called MathPapa, i didn't use it to work this out so my working might be different but it definitely helps me sometimes. for an equation like this, type it likes this: x+y=11; -x=-y-9
-cheesetoasty
A language arts teacher at Patton Middle School conducts a random survey of the student body and finds that 15% of the students would be
interested in a summer creative writing program if it were offered. If there are 720 students in the school, how many of them should the teacher
predict will participate in the program?
A) 15 students
B) 84 students
C) 108 students
D) 115 students
Answer:
115
Step-by-step explanation:
The number of students that should the teacher predict will participate in the program is option C. 108 students
Calculation of the number of students:Since 15% of the students would be interested in a summer creative writing program and there are 720 students
So, the number of students should be
= 15% of 720
= 108
Therefore, The number of students that should the teacher predict will participate in the program is option C. 108 students
Learn more about survey here: https://brainly.com/question/24292263
In Figure 3, F k is equal in magnitude but opposite in direction to the kinetic force of friction.
TrueFalse
no random links to random files pls!!!
Answer:
True
Step-by-step explanation:
At Sunrise Donuts you can buy 6 donuts and 2 kolaches for $8.84. One kolache and 4 donuts would cost $5.36. What is the price for one donut at Sunrise Donuts?
Answer:
1.34
Step-by-step explanation:
Will mark brainliest
Answer: Volume of prism is LxWxH which is 360
Step-by-step explanation:
Which expression is equivalent to −13(6x+15)−3?
True Or False? When the group gets to Camamzotz, Mrs. Whatsit says the 3 ladies will stay with them the whole time.
Answer:
false
Step-by-step explanation:
find the rate of change (slope) for the graph below ( simplify answer)
Simplify the following question:
