Answer:
15
Step-by-step explanation:
Hey! Pretty stranger :D
AsnwEr:
Number of girls in class = 15GivEn:
The ratio of no. of boys to no. of girls in a class is 4:5.Number of boys in class = 12To find:
Number of girls in class?Solution:
☯ Let number of girls be x.
Given that,
The ratio of no. of boys to no. of girls in a class is 4:5.Therefore,
→ 12/x = 4/5
→ x = 12 × 5/4
→ x = 60/4
→ x = 15
∴ Hence, number of girls in a class is 15.
What is the solution to the system of equations graphed below? A (2, 4) B (4,2) C (0,6) D (6,0)
Answer: (4,2)
Step-by-step explanation:
The solution would be where the two lines intersect which is the point (4,2)
Answer:
(4,2)
Step-by-step explanation:
(x=4, y=2)
the solution is the point of intersection of the graph
In the equation 4x + 5 = 21, what does x =
Answer:
X=4
Step-by-step explanation:
In the equation, you have to subtract 5 from both sides.
4x + 5 = 21
-5 -5
4x=16
Then you gotta get rid of the X so divide the 4 from both sides. That gets you X=4
Answer:
x=4
Step-by-step explanation:
21-5=16
16/4=4
Please help fast the bottom one I’ll give brainless an extra points for correct answer
Answer:
2*2*2*3*3*7
Step-by-step explanation:
prime facotrization = 2^3 x 3^2 x 7^1
2 x 2 x 2 x 3 x 3 x 7 = 504
Find the slope and the y-intercept of the line.
Y=-3/2x+7
Answer:
The slope is -3/2 and the y-intercept is 7.
Step-by-step explanation:
hope this helps
Kathy is 33 years old. She is 7 years younger than 5 times her daughter's age. The equation,
5x-7= 33, where x equals her daughter's age, can be used to find the age of Kathy's daughter. How
old is Kathy's daughter?
Answer:
Kathy's daughter is 8 years old
Step-by-step explanation:
What we know:
Kathy is 33 years old.
That is 7 years younger than 5 times her daughter's age.
With that, the equation 5x - 7 = 33 can be used to find x.
Step 1:
Move "- 7" to the right side of the equation, and find the opposite of it.
5x = 33 + 7
Step 2:
Add "33" and "+7" to get "40."
5x = 40
Step 3:
Divide both side by "5."
5x/5 = 40/5
x = 8
Thus, Kathy's daughter is 8 years old.
Answer:
8
Step-by-step explanation:
Write an equation for the graph
No mix numbers or decimals
Picture attached
Please help ASAP
Which point on the number line below is the opposite of
3?
loo
A
B
с
D
-2.
-1
0
1
2
Ο Α
B
С
OD
Step-by-step explanation:
point c
..................
Arc math problem
Thanks
Answer:
Option D
Step-by-step explanation:
17). Area of a sector of a circle = [tex]\frac{\theta}{360}(\text{Area of the circle})[/tex]
= [tex]\frac{\theta}{360}(\pi r^{2} )[/tex]
Here 'r' = radius of the circle
From the picture attached,
r = 10 ft
θ = 300°
Area of the sector = [tex]\frac{300}{360}[\pi (10)^{2}][/tex]
= [tex]\frac{5}{6}(100\pi )[/tex]
= [tex]\frac{250\pi}{3}[/tex]
Area of the sector = [tex]\frac{250\pi}{3}[/tex] ft²
Therefore, Option (D) will be the correct option.
Answer:
area of greater arc/sector=300/360 ×πr²=5/6 ×π10²=250π/3 ft²
The circumference of a circular lawn is 110 feet. If you double the radius, what will the new circumference be?
Answer:
220
Step-by-step explanation:
The new circumference of the circle will be 220 feet if the circumference of a circular lawn is 110 feet.
What is a circle?It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)
We have:
The circumference of a circular lawn is 110 feet.
2πr = 110
r = 55/π
Double the radius:
R = 2r= 110/π
New circumference = 2πR = 2π(110/π) = 220 feet
Thus, the new circumference of the circle will be 220 feet if the circumference of a circular lawn is 110 feet.
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Someone please help me with this
Answer:
11902
Step-by-step explanation:
mean=x=60
replace x with 60
y=-7628+325.5(60)
y=11902
Which point on the unit circle corresponds to -pi?
Answer:
mid point of circle⭕ is a answer
PLEASE HELP FAST AS A MIXED RADICAL READ IT CARFULLY BRAINLIST!
Answer:
[tex]2\sqrt[3]{2}[/tex]
Step-by-step explanation:
This is equal to [tex]\sqrt[3]{8} * \sqrt[3]{2} = 2\sqrt[3]{2}[/tex]
i dont get 4 digit by 1 digit multiplcation
Answer:
we know
Step-by-step explanation:
A particular type of cell doubles in number every hour. What fuction can be used to find the number of cells presented at the end of h hours if there are intentially 4 of these cells.
Answer:
nis maigeo/a
Step-by-step explanation:
Which value is equivalent to 5 + 4 x 2?
A) 11
B) 13
C) 18
D) 22
Find y
A. 18
B. 12
C. 6
D. 4.5
Answer:
D. 4.5
Step-by-step explanation:
brainest plz
i though originally the answer was 1/4x+4 but tgats not it please help
Answer:
what is that
Step-by-step explanation:
me cant see
Answer:
y = 4x
Step-by-step explanation:
You were close, its positive 4 rather than negative 4.
whats -33 + -20 , show how you can describe it.”
Step-by-step explanation:
-33 + -20 is -53. and I don't how
Find the volume for 2 different spheres by randomly choosing different radii.
Using the same radii values, find the volume of 2 cylinders where the height of the cylinder is the same as the diameter of the sphere.
Answer:
The volume of a sphere of radius r is:
S = (4/3)*pi*r^3
The volume of a cylinder of radius r and height h is:
C = pi*r^2*h
For this problem the height of the cylinders will be equal to the diameter of the spheres, which is equal to two times the radius.
First, let's use the radius: r = 2.
The volume of the sphere will be:
S = (4/3)*3.14*(2)^3 = 33.49
The volume of the cylinder, where h = 2*2 = 4, is:
C = 3.14*(2^2)*4 = 50.24
Now, let's choose the radius r = 3.
The volume of the sphere will be:
S = (4/3)*3.14*3^3 = 113.04
The volume of a cylinder with this radius and h = 3*2 = 6, is:
C = 3.14*(3^2)*6 = 169.56
How do you calculate slope in pre algebra
Answer:
Find the slope from a graph
Locate two points on the line whose coordinates are integers.
Starting with the point on the left, sketch a right triangle, going from the first point to the second point.
Count the rise and the run on the legs of the triangle.
Take the ratio of rise over run to find the slope. m = rise / run.
What are the solutions to the quadratic equation 5x2 – 8= –12x?
djjdjdjeiwiwueuwhhww
On the first visit to the veterinarian's office, Cora's kitten weighed 550 grams. On the second visit, the kitten had gained 350 grams. On the third visit, the kitten had gained another 300 grams.
What is the percent increase since the first visit in the kitten’s weight rounded to the nearest percent?
Answer:
118%
Step-by-step explanation:
550 grams and 300+350 grams = 650 grams
650/550 grams x 100 = 118.18
So 118.18 % rounded is 118%
Hope this helps plz hit the crown :D
Answer:
The kitten has gained a 218% more weight since the first visit to the vet.
Step-by-step explanation:
In order to get the percentage the kitten has gained you have to add all the weight together and divide the first visit by the total weight.
TO find the total weight is found by adding all the weights together:
550 + 350 + 300 = 1200
now we divide 1200 by 550 to get a decimal which allows us to find the percentage:
1200 / 550 = 2.18181818182
now we multiply 0.45833333333 by 100 to turn the decimal to a percentage:
2.18181818182 * 100 = 218.181818182%
Now we round up to the nearest percentage which is:
218.181818182% = 218%
PLS HELP ME 80 - 4^2 ÷ 8
Answer:
I think it's 79
Step-by-step explanation:
.... Hi don't be mad if you get wrong
Answer:
80 - 16 ÷ 8 80 - 2= 78
Step-by-step explanation:
Forty-seven percent of fish in a river are catfish. Imagine scooping out a simple random sample of 25 fish from the river and observing the sample proportion of catfish. What is the standard deviation of the sampling distribution? Determine whether the 10% condition is met.
Question options:
The standard deviation is 0.0998. The 10% condition is not met because there are less than 250 fish in the river.
The standard deviation is 0.0998. The 10% condition is met because it is very likely there are more than 250 fish in the river.
The standard deviation is 0.9002. The 10% condition is met because it is very likely there are more than 250 fish in the river.
The standard deviation is 0.9002. The 10% condition is not met because there are less than 250 fish in the river.
We are unable to determine the standard deviation because we do not know the sample mean. The 10% condition is met because it is very likely there are more than 250 fish in the river
Answer:
The standard deviation is 0.0998. The 10% condition is met because it is very likely there are more than 250 fish in the river
Explanation:
Formula to calculate standard deviation = √p(1-p)/n
Given p= population proportion
n= sample size
From the question,
We are given p(population proportion of catfish in the river)= 0.47
n(sample size of fish collected from river) = 25
The standard deviation using the formula above = √0.47(1-0.47)/25
= 0.0998
The 10% condition demands that a sample size be not less than 10% of the population
To check if the 10% condition was met, we know that a river will likely have up to 250 fish in it and so,
10% of 250= 0.10×250=25 fish
Therefore the option B chosen is correct
If you use Desmos and know the answer to this question, please help me.
Answer:
Step-by-step explanation:
If you look at Desmos you will see that when you put in the (x,y) coordinates in the x,y positions in your inequality that lines your plot and the shaded areas are different. If you put in each of the coordinates in the inequality you will see all the differenences between the shaded and the lines. I would do that in Desmos and you should be able to figure it out. There is an example picture below.
I hope this helps!
If you have any questions or need any help, please ask.
Consider the graph showing two functions.
Which answer can be used to find the solution to the system of equations?
According to the graph, it is found that it represents the solution of the following system:
Option B [tex]x=\frac{9}{x}[/tex] is correct.
What are system of equations?A system of equations is a collection of two or more equations with a same set of unknowns. In solving a system of equations, we try to find values for each of the unknowns that will satisfy every equation in the system.
The equations in the system can be linear or non-linear.
In the graph, two equations intersect at [tex]x = -3[/tex] and at [tex]x = 3.[/tex]
One is a straight line, in which the x-coordinate is equals to the y-coordinate, thus it is the line [tex]y = x.[/tex]
The other is an exponential equation, that goes to 0 as x goes to infinity, so x is in the denominator. At [tex]x = -3, y = -3,[/tex] and at [tex]x = 3, y = -3.[/tex] Thus, the function that has this graph is [tex]\frac{9}{x}[/tex], which means that the correct option is:
B [tex]x=\frac{9}{x}[/tex].
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Isabella is ordering pizza for a family dinner. If 2 pizzas will feed 4 people, how many pizzas does she need to order for 12 people?
Answer:
She needs to order 6 pizzas.
Step-by-step explanation:
(My bad I thought it was one pizza that fed 4 people not two)
Answer:
6 pizzas
Step-by-step explanation:
2pizza=4 people
12/4=3
3*2=6
i forget how to do this
A recipe for salad dressing calls for 3 tablespoons of oil for every 2 tablespoons of vinegar. The line represents the relationship between the amount of oil and the amount of vinegar needed to make salad dressing according to this recipe. The point ( 1, 1.5) is on the line.
a. Label the axes appropriately with the quantities they represent.
· b. Write an equation that represents the proportional relationship between oil and vinegar. Indicate the meaning of each variable.
Equation: ___________________________________________________________ ·c. Explain the meaning of the point (1, 1.5) in terms of the situation.
Explanation: __________________________________________________________
What's B and C?? Please help.
a.(answer):
Y represents table spoons in oil and the X represents the table spoons in vinegar.
b.(answer):
oil needed is one(1) tablespoon the amount of vinegar used is 1.5 tablespoons to make the salad dressing the correct and for it to be proportional.
linear equation
y = 3/2x
c.(answer)
For every 1 tablespoon of vinegar there is 1.5 table spoons of oil X=1,Y=1.5.
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Determine the solution for the equation, 5w - 9= 44.
Answer:
w=2
Step-by-step explanation:
Simplifying
4w + -9(6 + -5w) = 44
4w + (6 * -9 + -5w * -9) = 44
4w + (-54 + 45w) = 44
Reorder the terms:
-54 + 4w + 45w = 44
Combine like terms: 4w + 45w = 49w
-54 + 49w = 44
Solving
-54 + 49w = 44
Solving for variable 'w'.
Move all terms containing w to the left, all other terms to the right.
Add '54' to each side of the equation.
-54 + 54 + 49w = 44 + 54
Combine like terms: -54 + 54 = 0
0 + 49w = 44 + 54
49w = 44 + 54
Combine like terms: 44 + 54 = 98
49w = 98
Divide each side by '49'.
w = 2
Simplifying
w = 2
Answer:
w has multiple forms
exact w = 53/5
decimal w = 10.6
mixed number w = 10 3/5
5 x 53/5 - 9 = 44