Add the ratios: 5 + 4 = 9
Divide total students by 9:
27/9 =3
Girls are listed first so the 5 part of the ratio is girls.
Multiply 5 by the 3 from above:
5 x 3 = 15
There are 15 girls.
Answer:
There are 12 girls in the classroom because if you take 4+4+4=12 and you do the same with 5 so 5+5+5=15 then add them together you get 27. So, therefore, your answer would be 12
Step-by-step explanation:
Can someone help? Will give brainliest!! Ty
Solve the equation
-3x - 5 =16
What does x =??
Answer:
x=-7
Step-by-step explanation:
[tex]x = 21 \div - 3 \\ x = - 7[/tex]
Answer: -7
Step-by-step explanation:
Move all terms that don't contain
x
x
to the right side and solve
Select the correct answer.
Which equation is true for the value b= 10?
O A. 2(b + 4) = 16
OB.
2(b + 2) = 40
OC. 316 - 2) = 24
OD. 2(8 + b) = 42
O E. 3(b - 4) = 20
Answer:
C. 3(b - 2) = 24Step-by-step explanation:
b = 10
Substitute b in every equation below and compare the results
A. 2(b + 4) = 16
2(10 + 4) = 2(14) = 28 ≠ 16, incorrectB. 2(b + 2) = 40
2(10 + 2) = 2(12) = 24 ≠ 40, incorrectC. 3(b - 2) = 24
3(10 - 2) = 3(8) = 24, correctD. 2(8 + b) = 42
2(8 + 10) = 2(18) = 36 ≠ 42, incorrectE. 3(b - 4) = 20
3(10 - 4) = 3(6) = 18 ≠ 20, incorrectAnswer:
C. 3(b - 2) = 24..
Please someone help me!
9514 1404 393
Answer:
P = (8, 0)
Step-by-step explanation:
The coordinates of point P are the weighted average of the end points. The weights are the reverse of the segment divisions.
P = (2/5)A +(3/5)B
P = (2(-4, -6) +3(16, 4))/5 = (-8+48, -12 +12)/5 = (40, 0)/5
P = (8, 0)
NEED HEP WILL GIVE BRAINLIEST IF YOU SOLVE ALL 3
Answer:
1) cant solve, you accidentally cropped out the bottom
2) ∠ABC=60°
3) x=25°
Step-by-step explanation:
1) cant solve, you accidentally cropped out the bottom. Let me know what the figure opposite the angle (5x-70) is and I can figure out the answer.
2)∠ABC=(45+15) (VERTICALLY OPPOSITE)
∠ABC=60°
(x=12.5°)
3) (x) + (3x-10) =90
4x -10 = 90
4x=100
x=25°
Find the dimensions of the rectangle of maximum area with sides parallel to the coordinate axes that can be inscribed in the ellipse 4x^2 16y^2
Answer:
The answer is below
Step-by-step explanation:
Find the dimensions of the rectangle of maximum area with sides parallel to the coordinate axes that can be inscribed in the ellipse 4x² + 16y² = 16
Solution:
Given that the ellipse has the equation: 4x² + 16y² = 16
let us make x the subject of the formula, hence:
4x² + 16y² = 16
4x² = 16 - 16y²
Dividing through by 4:
x² = (16 - 16y²)/4
x² = 4 - 4y²
Taking square root of both sides:
[tex]x=\sqrt{4-4y^2 }\\[/tex]
The points of the rectangle vertices is at (x,y), (-x,y), (x,-y), (-x,-y). Hence the rectangle has length and width of 2x and 2y.
The area of a rectangle inscribed inside an ellipse is given by:
Area (A) = 4xy
A = 4xy
[tex]A=4(\sqrt{4-4y^2} )y\\\\A=4y\sqrt{4-4y^2}=4\sqrt{4y^2-4y^4} \\\\The\ maximum\ area\ of\ the\ rectangle\ is\ at\ \frac{dA}{dy}=0\\\\ \frac{dA}{dy}=4(\frac{4-8y^2}{\sqrt{4-4y^2} } )\\\\4(\frac{4-8y^2}{\sqrt{4-4y^2} } )=0\\\\4-8y^2=0\\\\8y^2=4\\\\y^2=1/2\\\\y=\frac{1}{\sqrt{2} }\\\\x=\sqrt{4-4(\frac{1}{\sqrt{2} })^2}=\sqrt{2}[/tex]
Therefore the length = 2x = 2√2, the width = 2y = 2/√2
PLEASE ANSWER ASAP !!!!!!!!!!!!!!!!!!! WILL GET BRAINLEST IF CORRECT!!!!!!!!!!!!!!!!!!!!!!
Drag and drop the angle pairs to correctly match their description.
Answer: top left goes to top bottom left goes to bottom, top right goes to 3rd box and bottom right goes to the 2nd box
37. Simplify to find x:
3-(4 X 3) = x
(483) - 7
Answer:
-0.003 x 2+.195 x -.483=0. -0.003x^2+.195x-.483=0 2,3,3,3,5,3,2,3,
Prime factors. 1000,200,1000
square root of (x-(65/2))2 is (x-(65/2))2/2 = (x-(65/2))1 = x-(65/2)
Step-by-step explanation:
−0.003 x 2+.195 x −.483=0. Enter an ... -0.003x^2+.195x-.483=0 ... {Left,Right}. 2, 3, 3, 3. 5, 3, 2, 3. Product of all. Prime Factors, 1000, 200, 1000 ... Step 7 : ... Note that the square root of (x-(65/2))2 is (x-(65/2))2/2 = (x-(65/2))1 = x-(65/2)
Please answer number 4 please
Answer:
x < -2.5
Step-by-step explanation:
N/A
The Time series graph gives some information about the number of umbrellas sold in a shop in the first 6 months of 2015.
The sales target for the first 6 month of 2015 was to sell a mean of 65 umbrellas per month.
Did the shop meet this target? Show how you got your answer.
Thanks :)
Answer:
no
Step-by-step explanation:
Please help, I will give brainliest, I am struggling badly.
Answer: y = 5/2x - 4
Step-by-step explanation:
the equation is y = ax + b (a ≠ 0)
because the slope of the line is 5/2 => a = 5/2
the line passes through (0; -4) => -4 = b
=> the equation is y = 5/2.x - 4
A 16-oz bottle of parmesan cheese costs $5.78, while an 8-oz bottle costs $3.97. Which is the better buy? Round
your answer to the nearest cent if necessary.
Answer:
The 16-oz bottle is a better buy
Step-by-step explanation:
Find the better buy by finding which one has a lower price per ounce:
Calculate the price per ounce of both bottles by dividing the cost by the number of ounces
5.78/16
= 0.36
3.97/8
= 0.5
Since 0.36 is smaller than 0.5, the 16 ounce bottle is a better buy.
Answer:
The 16-oz bottle of parmesan cheese is the better buy.
Step-by-step explanation:
It is the better buy because, if you compare the prices and the ounces, I say that the 16-oz is the best buy.
Please help!!!!!
(50 points)
Answer:Hope this helps
Step-by-step explanation:
Cost price = $675 and loss% = 92%
100 point please help me
Answer:
it says 5 points
Step-by-step explanation:
Answer:
2m+4
(twice the students in maths(2m) plus four more (+4))
which equation is parrel to the equation y=3x-4
y=3x-8
y=4x+2
y=x-9
y=-1/3x+4
Answer:
Parallel means they have the same slope so, y=3x-8
The sum of the quotients of 25x2/5x and the quotient of 8x2/x is
HELP PLEAE GIVING BRAINLIEST! MEAN A LOT IF YOU HELP! :)
HELP SOLVE
Answer:
160
Step-by-step explanation:
Muliply both sides by 20/3 to get e=20/3*24=160
Answer:
e = 160
Step-by-step explanation:
20 * 3/20e = 24 * 20
3e = 480
3e/3 = 480/3
e = 160
Round 694 to the nearest 100
Answer:
700
Step-by-step explanation:
694 is closer to 700 than it is to 600.
A contractor has 12 gallons of paint which will cover 2,712 square feet. Which of the following rates best represents the relationships between the number of square feet and the number of gallons of paint?
A. 226 gallons of paint per square foot
B. 2,712 gallons of paint per square foot
C. 226 square feet per gallon of paint
D. 12 square feet per gallon of paint
Evaluate the expression when x = 3/4 and y= - 1/2: 2x +y
Answer:
1
Step-by-step explanation:
2(3/4)-1/2=
The 2 cancels out the 4 making it 3/2.
3/2-1/2=2/2
=1
Can someone answer this question for me
Question 5 (4 points)
(06.01)
Evaluate the expression 43+ (7 - 3) * 2. (4 points)
Blank 1:
Answer:
43+ (7 - 3) * 2 = 51
Step-by-step explanation:
43 + (7 - 3) x 2
First, you want to do what is in the parenthesis
43 + 4 x 2
Now, you want to multiply.
43 + 8
Next, you simplify.
51
Consider a cookie recipe in which 1 1/2 cups of chocolate chips to make cookies. Lara wants to double the number of 25 cookies. How many cups of chocolate chips should she use?
Answer:
3 cups
Step-by-step explanation:
Double 1.5 to get 3.
Lara would need 3 cups of chocolate chips
The cookie recipe uses of [tex]1\frac{1}{2}[/tex] cups of chocolate chips to make 25 cookies. The ratio of chocolate chips to cookies is [tex]1\frac{1}{2}[/tex] : 25
If Lara wants to double the number of cookies she wants to make, it means she wants to make 50 cookies (25 x 2). In order to determine the cups of chocolate chips that she would need, we also need to double the cups of chocolate chips
Chocolate chips needed = [tex]1\frac{1}{2}[/tex] x 2
Convert the mixed fraction to an improper fraction
3/2 x 2
= 3 cups
A similar question was solved here : https://brainly.com/question/14379402?referrer=searchResults
What’s the volume of this question
Answer:
A. 618.74 cubic inches.
Explanation:
V cylinder= πr²×h
V rectangular prism= w×h×l
Answer:
Option A is the right answer
Simplify one or both sides by combing like terms X=8-3
Answer:
x=5
Step-by-step explanation:
All you have to do is subtract 8-3 and you get 5, which makes ur answer simplified, you cant simplify x.
Answer:
[tex]x = 5[/tex]
Step-by-step explanation:
[tex]x = 8 - 3[/tex]
[tex]x = 5[/tex]
Caitlyn purchased a ring for her jewelry store at the wholesale price of $220 and marked up the price 35%. What is the list price of the ring?
Answer:
$297
Step-by-step explanation:
220 increase 35% =
220 × (1 + 35%) = 220 × (1 + 0.35) = 297
Give three examples of equations where there would be no solution
Answer:
1) 2x+1 = 2x-4
2) 6x+2=3(2x+1)
3) -4x -5=-2(2x)+2
Step-by-step explanation:
We need to give three examples of equations where there would be no solution.
First we will define equation with no solution.
If solving an equation you get the result as 3=5 but 3 is not equal to 5, so the equation has no solution.
Examples of equations where there would be no solution
1) 2x+1 = 2x-4
2x-2x=-4-1
0=-1 ( false)
So, the equation has no solution.
2) 6x+2=3(2x+1)
6x+2=6x+1
6x-6x=1-2
0=-2 (false)
So, the equation has no solution.
3) -4x -5=-2(2x)+2
-4x-5=-4x+2
-4x+4x=2+5
0=7 (false)
So, the equation has no solution.
A man spend 10% of his salary on rent, 25% on food, 18% on transportation and the balance he saves. If his salary is $1500 per month, how much does he save each month?
Answer:
He saved $705 pls mark brainliest
Step-by-step explanation:
So 10% is $150 and 25% is 375 and 18% is 270 so you would add all those togeather to get 795 and 1500-795 is 705 so he saved $705!