Answer:
50%
Step-by-step explanation:
Para resolver este problema vamos a definir 4 variables:
V= número de varones bailando.
M= número de mujeres bailando.
V' = número de varones que no están bailando.
M' = número de mujeres que no están bailando.
Sabemos que hay 40 personas en la fiesta, por lo que podemos construir la siguiente ecuación:
V+M+V'+M'=40
Vamos a suponer que cada mujer que está bailando, está bailando varón respectivamente. (El problema no da más información, entonces podemos suponer esto.)
Entonces si hay 5 mujeres bailando, entonces también hay 5 hombres bailando, por lo que nuestra ecuación se reescribe de la siguiente manera:
5+5+V'+M'=40
y simplificamos:
10+V'+M'=40
V'+M'=40-10
V'+M'=30
Ahora bien, el problem nos dice que el número de varones que no bailan es el doble del número de mujeres que no bailan en un determinado momento. Entonces con esta información podemos construir la siguiente ecuación:
V'=2M'
Y podemos despejar el número de mujeres que no bailan, lo que nos da:
[tex]M'=\frac{V'}{2}[/tex]
Entonces podemos sustituir esto dentro de nuestra ecuación para obtener:
[tex]\frac{V'}{2}+V'=30[/tex]
y podemos entonces despejar V'
[tex]\frac{3V'}{2}=30[/tex]
[tex]V'=\frac{2(30)}{3}[/tex]
V'=20
Entonces hay 20 varones que no están bailando, por lo que la probabilidad de que el varón que se escoge al azar no esté bailando está dada por la siguiente fórmula:
[tex]P=\frac{V'}{total}[/tex]
[tex]P=\frac{20}{40}=\frac{1}{2}[/tex]
P=50%
Recall that two angles are complementary if the sum of their measures is 90°
Find the measures of two complementary angles if one angle is 14º more than three times the other angle.
please help i’ll give brainliest
Answer: 1.5 + 3 = 1.8
Step-by-step explanation: Add both sides.
Answer:
P = 9 cm
Step-by-step explanation:
The Perimeter of a Rectangle
Given a rectangle of dimensions W and L, the perimeter of the rectangle is:
P = 2W + 2L
Or, equivalently:
P = 2(W + L)
The dimensions of the icon for the mobile app are 1.5 cm and 3 cm, thus:
P = 2(1.5 cm + 3 cm)
P = 2(4.5 cm)
P = 9 cm
Find the value of x that makes m
|| n
Answer:
X= 15
Step-by-step explanation:
3x - 15 + 150 = 180
X = 15
PLZ HELP!!!
WILL GIVE BRAIN!!!
Answer:
29
Step-by-step explanation:
An ice cream factory makes 230 quarts of ice cream in 5 hours. What is the constant of proportionality?
A:41
B:46
C:225
D45
Answer:
C
Step-by-step explanation:
6th grade math i mark as brainliest
Answer:
3x5 are factors of 75
Step-by-step explanation:
good day mate
Answer:So, the prime factors of 75 are written as 3 × 5 × 5 or 3 x 5^2, where 3 and 5 are the prime numbers.
Step-by-step explanation:Step 1: Start by dividing the number by the first prime number 2 and continue dividing by 2 until you get a decimal or remainder. Then divide by 3, 5, 7, etc. until the only numbers left are prime numbers. Step 2: Write the number as a product of prime numbers.
mark as the brainliest
A 0.7 kg toy car accelerates at 0.5 m/s2. The FORCE is...
0.35 m/s2
0.35 kg
0.35 N
Answer:
[tex]\boxed {\boxed {\sf 0.35 \ N}}[/tex]
Step-by-step explanation:
Force can be found by multiplying the mass by the acceleration.
[tex]F=m*a[/tex]
The mass of the toy car is 0.7 kilograms and the acceleration is 0.5 m/s²
[tex]m= 0.7 \ kg \\a= 0.5 \ m/s^2[/tex]
Substitute the values into the formula.
[tex]F=0.7 \ kg * 0.5 \ m/s^2[/tex]
Multiply.
[tex]F=0.35 \ kg*m/s^2[/tex]
1 kg*m/s² is equal to 1 Newton. The units for force are Newtons.Therefore, our answer of 0.35 kg*m/s² is also equal to 0.35 Newtons[tex]F= 0.35 \ N[/tex]
The force of the toy car is 0.35 Newtons
Answer:
(45 kg)(4.1 m/s)2 = 120 N
Step-by-step explanation:
please help asap nobody else has answered my other questions. thanks! answer question 2 please!
Answer:
15
Step-by-step explanation:
To find the y intercept set x=0
You are given two points: (7,-6)(-4,27)
y=mx+b
y2-y1=x2-x1
x1=7
y1=-6
x2=-4
y2=27
27-(-6)/-4-7=27+6/-4-7=33/-11=-3
y=-3x+b
-6=-3(7)+b
-6=-21+b
+21 +21
b=15 so, y=-3x+15
PLUG IN O TO THAT EQUATION
y=-3(0)+15
Your y intercept would be 15
10 points
What are a few things that help you focus while doing an assignment? (I need help focusing on a math test)
Please dont say unlogical answers, thanks!
Answer:
chewing gum can help
also taking breaks every time you feel like you need one, make sure you eat before doing a test as-well
Step-by-step explanation:
Answer:
i like to make sure i have a healthy breakfast and a big glass of water, that always helps. sometimes going for a 30 minute walk could help, listening to music also helps me
Step-by-step explanation:
hope this helps ;)
Can you help me please
2.5
Step-by-step explanation:
Multiply 2.5 by y and you get x
Claire is making picnic lunches. She has 12 sandwiches, 18 apples and 30 pieces of candy. What is the greatest number of lunches she can make if she wants to have the same number of each kind of food in each lunch? *
PLEASE HELP!!
Answer:
57472
Step-by-step explanation:
One factor of this polynomial is (2x − 1).
2x^3 + 5x^2 - 27x +12
Use long division to determine which expression represents the other factor.
answer choices:
x2 − 3x + 12
x2 + 3x − 12
x2 − 12x + 3
x2 + 12x − 3
Answer:
B: x^2+3x-12
Step-by-step explanation:
Given: If you live in Orlando, then you live in Florida.
Given: Morgan does not live in Orlando.
Conclusion: Morgan does not live in Florida.
Is this sentence Law of Detachment, Law of syllogism, or invalid
Answer:
The law of detachment and syllogism is valid here
Explanation:
The law of detachment and syllogism is associated with inductive reasoning. This law states that a conclusion is valid if the premise or hypothesis is valid, therefore if a then b. In others a results in b.
The law of detachment is denoted
[(a→b)∧a]→b
The law of syllogism derives from the law of detachment. Syllogism says that if a results in b and b results in c, then a results in c. In other words since a causes b and b causes c, then if a then c.
It is denoted
[(a→b)∧(b→c)]→(a→c)
In the above example, given: If you live in Orlando, then you live in Florida
Morgan does not live in Orlando, therefore it is concluded that he does not live in Florida
The manager of a shopping center wishes to obtain information on the shopping habits of people in the area. The area contains four neighborhoods of varying populations. The manager suspects that the shopping habits may be different in different-sized neighborhoods. Which of the following sampling designs would be most effective in gathering the information the manager requires?
A. a convenience sample from the area
B. a simple random sample from the area
C. a cluster sample using the neighborhoods as clusters
D. a stratified sample from the neighborhoods in the area
E. an online poll that invites all people from the neighborhoods in the area to participate
Answer:
defintly A
Step-by-step explanation:
because all the others are inconvenient and bad
Answer:
D
Step-by-step explanation:
Because you want to be able to see data from all neighborhoods.
Solve equation. -15 + (-8)=
Answer:
The answer is - 23
Step-by-step explanation:
- 15 + (-8) =
- 23
PLS HELP!!!
I HAVE THE ANSWER!
I ONLY NEED TO SHOW THE WORK
Find the value of x by using the exterior angle theorem.
Answer: B
What’s the value for y? PLEASE!!
Answer:
the answers Is c or 13 because 3*5=15-2=13
what is 7.5% of 61.13
Answer:
Step-by-step explanation:
61.13*7.5%=4.58
61.13+4.58=65.71
Replace * with a monomial so that the expression represents the square of a binomial: *+24x+9
Answer:
* is [tex]7x^{2}[/tex]
Step-by-step explanation:
(7x + 3)(x + 3)
= [tex]7x^{2}[/tex] + 24x + 9
Answer:
7x²
Step-by-step explanation:
Write an equation in slope-intercept form of the line that passes through (-1, 4) and (0, 2)
Answer:
y = -2x + 2
General Formulas and Concepts
Pre-Alg
Order of Operations: BPEMDASAlgebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptSlope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Step-by-step explanation:
Step 1: Define
Point (-1, 4)
y-intercept (0, 2)
Step 2: Find slope m
Substitute: [tex]m=\frac{2-4}{0+1}[/tex]Subtract/Add: [tex]m=\frac{-2}{1}[/tex]Divide: [tex]m=-2[/tex]Step 3: Write linear equation
y = -2x + 2
Arya travels at an average speed of 30 mph for 40 miles. Without stopping, Arya then travels 120 miles in 2.25 hours. Find her average speed for the entire journey to 2 dp.
Answer:
44.69 mphStep-by-step explanation:
Speed = distance/time
Distance is:
40 miles + 120 miles = 160 milesTime is:
40/30 + 2.25 = 3.58 hoursAverage speed:
160/3.58 = 44.69 mphAt a desert resort, the temperature at 7 a.m. was 3°C. The temperature increased by an average of 3.4°C each hour until it reached 30.2°C. How long did it take to reach this temperature?
Answer: It will take 8 hours to reach this temperature.
Step-by-step explanation:
Given: At a desert resort, the temperature at 7 a.m. was 3°C.
The temperature increased by an average of 3.4°C each hour until it reached 30.2°C.
Let x be the number of hours taken to reach 30.2°C..
As per given ,
Initial temperature +(average increase in temperature) (Number of hours) = 30.2
⇒3+3.4x=30.2
⇒3.4x=30.2-3
⇒3.4x=27.2
⇒ x=8 [Divide both sides by 3.4]
Hence, it will take 8 hours to reach this temperature.
Which Student is walking Faster E or F
Answer:
E
Step-by-step explanation:
the steeper the slope the faster the something
Lily plans to paint a stencil design on the wall in her room the stencils has one part yellow 3 Part Blue and 4 parts are blue and 4 parts are white .The area of the the walls that she must paint is 480 square feet a quart of paint approximately covers 80 square feet .what is the minimum amount of paint that Lily needs to buy
Answer and explanation:
Since a quarter(1/4) of paint covers 80 square feet, a whole paint would cover 80×4= 320 square feet of the wall
Remaining part of the wall left unpainted after using one whole paint
480-320= 160 square feet
Therefore paint required for remaining unpainted part
= 160/80= 2 quarters of paint(1/4+1/4)= 1/2 paint
Total paint required for the wall = one whole paint + half paint = 1+1/2= 1 1/2
Total paint required is one and half
Or
We divide area of wall by area of wall covered by each quarter
480/80=6 quarters of paint
6 quarters of paint = 1/4+1/4+1/4+1/4+1/4+1/4
We still get same answer
= 1 1/2
Answer: A 1 quart yellow, 2 quarts blue, 3 quarts white
Step-by-step explanation:
if u divide 480 by 80 you will get 6 so u will only need 6 quarts of paint.
If using the method of completing the square to solve the quadratic equation x2 + 15x + 4 = 0, which number would have to be added to "complete the square"?
Answer:
The number which number would have to be added to "complete the square" is [tex]\mathbf{(\frac{15}{2})^2 }[/tex]
Step-by-step explanation:
We need to solve the equation [tex]x^2 + 15x + 4 = 0[/tex] by completing square method.
The general form is [tex]x^2+2(x)(y)+y^2=(x+y)^2[/tex]
Solving equation using completing square method
[tex]x^2 + 15x + 4 = 0[/tex]
We would be adding and subtracting 15/2 to make it a complete square
[tex]x^2+2(1)(\frac{15}{2} )+(\frac{15}{2})^2+4-(\frac{15}{2})^2=0[/tex]
So, now it can be written in form of [tex](x+y)^2[/tex]
[tex](x+\frac{15}{2})^2+4-\frac{225}{4}=0\\(x+\frac{15}{2})^2+4-\frac{225}{4}=0\\(x+\frac{15}{2})^2+\frac{4*4-225}{4}=0\\(x+\frac{15}{2})^2+\frac{16-225}{4}=0\\(x+\frac{15}{2})^2+\frac{-209}{4}=0\\(x+\frac{15}{2})^2-\frac{209}{4}=0[/tex]
So,using the method of completing the square to solve the quadratic equation x2 + 15x + 4 = 0 we get [tex]\mathbf{(x+\frac{15}{2})^2-\frac{209}{4}=0}[/tex]
The number which number would have to be added to "complete the square" is [tex]\mathbf{(\frac{15}{2})^2 }[/tex]
Answer:
it's 56.25
Step-by-step explanation:
Already Completed it on K12
PLEASE HELP!Find the slope of the line on the graph.
Write your answer as a fraction or a whole
number, not a mixed number or decimal
Answer:
3/1 or 3
Step-by-step explanation:
It rises up three and to the side one
Answer: The slope is 3.
Find the area of a sector with a central angle of 126 degrees and a radius of 11.8 m. Round to the nearest tenth.
Answer:
The area would be 13.
Step-by-step explanation:
Which number is a rational number?
Answer:sq rt of 49
Step-by-step explanation:
apples cost $1 each and oranges cost $2 each. Noah has $10 to spend at the produce market. Can he buy 7 apples and 2 oranges? Explain or s reasoning. HELP NEEDED ASAP WILL GIVE 5 STARS AND BRAINLIEST
Answer:
apple= $1
orange=$2
Noah has total $10
He can't buy 7 apples and 2 orange
Step-by-step explanation:
7 apple= $7
2 orange= $4
7+4=11
And Noah only has $10
Luka wants to buy peaches and a watermelon . Peaches cost $2.99 a pound, and watermelon costs $4.50. he has $15.00 to spend
Answer:
2.99: 3 4.50: 5
Step-by-step explanation:
5 plus 3 equals 8.
If he has 15.00 to spend he would get 7 dollars as change.