Answer:
1) x = 2 and y = 3: 12 students got an A.
2) x = 4 and y = 3 6 students got an A. (from the comments)
Step-by-step explanation:
Hopefully I read this right, but the ratio you're trying to find is A : B = y : x
1) Plug in x = 2 and y = 3 to get 3 : 2. Because we know 8 students got a B we're going to multiply by 4 on each side to get 12 : 8 (12 A students and 8 B students).
2) You asked this in the comments so I answered it as well. Do the same thing as 1):
Plug in x = 4 and y = 3 to get 3 : 4.
We know there's 8 B students so multiply by 2 to get 6 : 9. 6 A students and 9 B students.
If x is 2 and y is 3, the number of students that goat an A is 12.
What are ratios?
Ratio expresses the relationship between two or more numbers. It shows the frequency that one value is contained within other value(s).
How many students got an A?In order to determine this, divide 8 by 2: 8/2 = 4
Multiply 4 by 3 = 12
To learn more about ratios, please check: https://brainly.com/question/25927869
I just want to say thank you for all the people in the brainly community helping me with my classes, but right now I need help
Find the area of a trapezoid with a height of 6 feet and bases that are 7 feet and 9 feet in length.
48 ft2
52.5 ft2
58.5 ft2
96 ft2
Answer:
48ft²
Step-by-step explanation:
A = a + b / 2 h = 7 + 9 / 2 · 6 = 48ft²
Gilbert earns $7.50 per hour washing cars.
70 - Graph the relationship between the
67.5 - number of hour Gibert works and the
60 - total amount of money he earns.
45 - Horizonally: Time worked
37.5- Vertically: Money earne $
30 -
22.5-
15-
7.5- >
0 1 2 3 4 5 6 7 8 9 10
Answer:
You can put the dollars on the y axis and the hours on the x axis. Whenever the hours increase by 1, move over 1 on the x axis and 7.50 up on the y axis.
The first point should be (1, $7.50).
↑ ↑
hours, money earned
The second point then will be (2, $15.00), the third will be (3, $22.50), and so on.
Step-by-step explanation:
The length of a cell phone is 1.81.8 inches and the width is 4.84.8 inches. The company making the cell phone wants to make a new version whose length will be 1.621.62 inches. Assuming the side lengths in the new phone are proportional to the old phone, what will be the width of the new phone?
Answer: 4.32432 inches
Step-by-step explanation:
This is a simple ratio problem:
we are given the old dimensions:
L x W = 1.818 x 4.848
new = 1.62162 x ?
? = (1.62162 x 4.848)/1.818 = 4.32432
The width of the new phone should be 4.32432 inches
pls help meeeeeeeeeeee
Circle A has a radius of 4.0 cm. The shortest distance between B and C on the circle is 3.5 cm.
What is the approximate area of the shaded portion of circle A?
7.0 cm²
14.4 cm²
25.15 cm²
50.3 cm²
Answer:
I thank it is 14.4
Step-by-step explanation:
hope this helps if not let me know
help me please i need step by step explanation to please
Answer: I would say C
Step-by-step explanation: Its not A cuz 7 is a decimal, its not B because of there being 2 p's and same for D
Answer:
D. p + 0.07p
Step-by-step explanation:
Answer choice D is correct because if we were to plug in a variable (e.g. 1 and 2), we would get the same amount when using 1.07p. All the other answer choices either work for only one value or don't work at all.
For example,
1 + 0.07(1) = 1.07(1).1 + 0.07 = 1.07
1.07 = 1.07
2 + 0.07(2) = 1.07(2)2 + 0.14 = 2.14
2.14 = 2.14
of the markets in a certain city, 7/10 offered customers a salad bar in 1999
percent notation:
Answer:
70%
Step-by-step explanation:
7/10 can be expanded to 70/100 and there it is simpler to see the percentage
Why aren’t there infinitely many semi-regular tessellations?
Answer:
The reason there are only eight semi-regular tessellations has to do with the angle measures of various regular polygons.
Step-by-step explanation: hope that this helps you! :)
help please
answer the question
Answer:
Step-by-step explanation:
Along the line 4 squares up the is your answer
Help me please i need step by step explanation to please
Jill used the following slime recipe: 8 oz of Glue; 3 oz of Contact Solution; 1 oz of baking soda; 4 oz of water. Based on the information, if Jill uses 12 oz of Contact Solution how many ounces of water will she need?
Answer:
16 oz of water
Step-by-step explanation:
if you multiply 3 by 4 its 12 if you multiply 4 by 4 its 16
Question 1)
Convenience Store Your friends know that you stop at the local convenience store every morning on your way to school and get a bottle of juice. For your birthday, they get you a $50 gift card. Suppose that a small bottle of juice costs $2 and all you ever buy at the store is juice.1.(a)W rite a function, f, that can be used to track your gift card balance in terms of the number of bottles of juice, x, you have purchased.(b)What is the rate of change of this function? What does this mean for this scenario?(c)What will the graph of the function look like? How do you know?(d)What does )(=f“246” mean in the context of the problem?(e)Using the format given below, complete the table representing your function by choosing several different values representing the number of bottles of juiceyou have purchased and computing the remaining balance on your gift card. Then, use your table to construct ordered pairs of the form(xf,(x)).
Question 2)
Practice with Linear Functions For questions 1 and 2: Evaluate the function at the specified inputs for x. Write the input–output pairs in function notation and in a table of values. Graph each line by plotting the points you generated from the function.1.Consider the function given by fx()=-2x3. Use the tables below to determine the value of f at various x-values. Consider the function given by1gx()=+x12. Use the tables below to determine the values of g at various x-values.
Question 3)
write an algebraic function rule that can be used to model each scenario. Then explain what the slope and the vertical intercept mean in the context of the problem.7.At a local pumpkin patch you can pick your own pumpkins. There is a $5 chargeto enter the patch and then a $0.25 charge per pound of pumpkin. Let p representthe weight of the pumpkin you choose and Cp() represent the total cost of thepumpkin in terms of the weight of the pumpkin.8.You are skiing down a 1,350 meter ski slope at 60 meters per second. Let trepresent your skiing time in seconds and dt() represent the distance from thebottom of the ski slope.9.The basement of a building is 40 feet below ground level. The building’s elevatorrises at a rate of 5 feet per second. You enter the elevator in the basement. Let trepresent the number of seconds you are in the elevator and ht() represent howhigh the elevator has risen (in feet) in t seconds.10.There is a stack of old algebra books in the library. Each book is114inches thick .Let b represent the number of books in a stack and sb() represent the total height of the stack in inches.
an expression is shown
5/6 m + 12 - 2/3 m-6
a student wrote the steps she used to determine an expression equivalent to the expression shown.
step 1: 5/6 m+12-2/3 m-6
step 2: 5/6 m-2/3 m + 12-6
step 3:(5/6) (- 2/3) m +12-6
step 4: - 10/18 m +6
in which step did the student make her first error?
explain your response
write the correct expression for this step
explain your response
Answer:
Step-by-step explanation:
[tex]\frac{5}{6}m+12-\frac{2}{3}-6[/tex]
*Note that [tex]-\frac{2}{3}[/tex] is equivalent to [tex]-\frac{4}{6}[/tex]*
[tex]Step\ 1\ \frac{5}{6}m+12-\frac{2}{3}m-6 \\\\[/tex]
[tex]Step\ 2\ \frac{5}{6}m-\frac{2}{3}m+12-6 \\\\[/tex]
[tex]Step\ 3\ (\frac{5}{6})(-\frac{2}{3})m+12-6 \\\\[/tex] <== this is where the mistake was made.
[tex]Step\ 4\ -\frac{10}{6}m+6[/tex]
Questions:
1. In which step did the student make her first error?
Explanation: The students made her first error in Step 3 because she multiplied the fractions, instead of subtracting them.
2. Write the correct expression for this step
The correct expression for Step 3:
[tex]Step\ 2\ \frac{5}{6}m-\frac{2}{3}m+12-6\\\\[/tex]
[tex]\frac{5}{6}m-\frac{4}{6}m+12-6\\\\[/tex]
[tex]\frac{1}{6}m+12-6\\[/tex]
[tex]\frac{1}{6}m+6[/tex]
Explanation: First, I converted [tex]-\frac{2}{3}[/tex] to [tex]-\frac{4}{6}[/tex]. Then subtracted the fraction. After, I subtracted the number (integers).
Hope this helps!
Solve the equation
y = - 1/3 x + 4
What ordered pairs in the form of ( x, y ) could be solutions to the equation?
Answer:
(12,4)
Step-by-step explanation:
BRAINLIEST IF YOU ANSWER FAST AND 100 POINTS!? Both are two different answers.
1. G (7, 3), H (-1, 1), and I (-3, 4) are the coordinates of a triangle's vertices. If the triangle is reflected over the x-axis, what are the coordinates of the image?
G '(7, -3), H '(-1, -1), I '(-3, -4)
G '(7, 3), H '(-1, -1), I '(-3, 4)
G '(7, 3), H '(-1, 1), I '(-3, -4)
G '(7, -3), H '(1, -1), I '(-3, -4)
2. A (2, 5), B (6, -3), and C (8, 0) are the coordinates of a triangle's vertices. If the triangle is reflected over the y-axis, what are the coordinates of the image?
A '(-2, -5), B '(-6, -3), C '(8, 0)
A '(-2, 5), B '(-6, 3), C '(-8, 0)
A '(-2, 5), B '(-6, -3), C '(-8, 0)
A '(2, -5), B '(6, 3), C '(8, 0)
Answer:
Under a reflection in the x- axis
a point (x, y ) → (x, - y ), hence
G(- 2, 1) → G'(- 2, - 1)
H(- 7, 4) → H'(- 7, - 4)
Find the surface area of the cube
Answer:
24 cm²
easy way to find surface area of a cube.
use the formula: 6a²
[tex]\hookrightarrow 6(2)^2[/tex]
[tex]\hookrightarrow 6(4)[/tex]
[tex]\hookrightarrow24[/tex]
We know that:
[tex]\space\ Surface \space\ area \space\ of \space\ cube=\s Area \space\ of \space\ it's \space\ faces[/tex]
This means that:
[tex]\space\ Surface \space\ area = [(2)(2)] + [(2)(2)] + [(2)(2)] + [(2)(2)] + [(2)(2)] + [(2)(2)][/tex]
Simplify the expression to find the surface area.
Simplifying the expression:
[tex][(2)(2)] + [(2)(2)] + [(2)(2)] + [(2)(2)] + [(2)(2)] + [(2)(2)] \\\\\ [4] + [4] + [4] + [4] + [4] + [4]\\\\ 4[6] \\\\ 24 \space\ cm^{2}[/tex]
Hence, the surface area is 24 cm².
I will give brainliest for right answer!
A history test has 30 questions. A student answers 90% of the questions correctly.
How many questions did the student answer correctly?
Enter your answer in the box.
questions
Answer:
27 questions.
Step-by-step explanation:
Total questions in history test = 30
Number of questions answered correctly:
90% of 30
= 90/100 × 30
= 27
=》The student answered 27 questions out of 30 correctly.
___________
Hope it helps ⚜
Answer:
27
Step-by-step explanation:
I took the k12 test
2. Martha ran 2 miles in 15 minutes.
At this rate, how many miles
would she run in 2 hours?
Answer:
4 fifteen minute periods make up one hour, so she will run 8 miles in one hour. Since it’s 2 hours, you would multiply that by 2 to get 16. So, Martha ran 16 miles
Step-by-step explanation:
this is not my answer but i hope it helps :D
Answer:
8 miles
Step-by-step explanation:
i think
What number completes the following equation? 8 X (40 + 7) = (8 X_) + (8 X 7)
Hello everyone if you could help me that would be awesome
715,000 ___ 7.15 × 10 5 a. > b. = c. <
Answer:
b. =
Step-by-step explanation:
First, we have to figure out 7.15x10^5.
10^5=100,000
100,000x7.15=715,000
So, 715,000 is equal to 7.15x10^5.
715,000=7.15x10^5
Hope this helped...have a nice day c:
Answer:
b)=
Step-by-step explanation:
7.15* 10^5=
10^5= 100000
(1 with 5 zeros at the end)
7.15*100000= 715,000
715,000 compared 715,000:
715,000 = 715,000
Please help
Construct an isosceles triangle with one 70* angle and two 4 inch sides. Is this a unique triangle? Explain why or why not.
The isosceles triangle has 2 equal sides of 4 inches and a vertex angle measure of 70 degrees, and it is a unique triangle
How to determine if the triangle is unique?The given parameters are:
Triangle type = Isosceles triangle
Side length = 4 inches
Angle measure = 70 degrees
Since the triangle is an isosceles triangle, then the equal angles would be:
Ф = 180 - 2 * 70
Ф = 40
The length (L) of the third side is:
L/2 = 7 * cos(40)
Multiply both sides by 2
L = 14 * cos(40)
L = 10.7
So, the angles in the triangle are 70 and 40 degrees; while the side lengths are 4 and 10.7 inches
See attachment for the figure of the isosceles triangle
Read more about isosceles triangles at:
https://brainly.com/question/10187910
Determine the length of the unknown side of the right triangle. If it is not an exact answer, what integer is it closest to? (Don't forget to include units!)
Answer:
=> The third side of the triangle is √53 mm
Step-by-step explanation:
We know that this is a right angled triangle ,
so , by using Pythagoras theorem we can find out the third side of the triangle ,
=> P²+B²= H²
=> 7²+2² = H²
=> 49+4 = H²
=> 53 = H²
=> √53 = H
The third side of the triangle is √53mm
I need help answer with explanation please
Answer:
1. Changing speed. It does not stay constant instead it changes speed.
2. 1.86
Step-by-step explanation:
You would find how much it multiples by on the chart to the left and find its never the same number which would make it change speed but also for number 2 you would put all the numbers in order that you have gotten and the middle number would be your average.
Hope this helps
Have a good day!
Find the area of the polygon.
I think the area is 420
Step-by-step explanation:
Answer this question.
98^2+89*5/4=?
Answer:
9715.25
Step-by-step explanation:
Answer:
9715.25
Step-by-step explanation:
\text{Time (hours)}Time (hours) \text{Earnings (dollars)}Earnings (dollars) 4 \$70.8099 \$159.30 28 \$495.60 How long does it take him to make \$132.75
Answer:
7.5 hrs.
Step-by-step explanation:
First we need to find how much Magan earns per hour using the slope-intercept form: y = mx + b
Slope (m) = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
We will be using: (4, 70.80) and (9, 159.30) to find the slope of this table..
[tex]m=\frac{y_2-y_1}{x_2-x_1} \\\\m=\frac{159.30-70.80}{9-4} \\\\m=\frac{88.50}{5} \\\\m=17.7[/tex]
y = mx + b
y = 17.7x + b
I will be using (4, 70.80) to find the value of b
(4, 70.80)
y = 17.7x + b
70.80 = 17.7(4) + b
70.80 = 70.80 + b
-70.80 -70.80
0 = b
y = 17.7x + b ==> y = 17.7x + 0 = OR y = 17.7x (since the value of b is 0)
The question wants us to find out how long it took Magan to make $132.75
y = 17.7x
132.75 = 17.7x
/17.7 /17.7
7.5 = x
This means that it took him 7.5 (seven and a half) hours to make $132.72
*View the attached graph to confirm the answer*
Hope this helps!
Answer:
7.5 hrs.
Hope this helps! Good luck! :)
3x + 3 = -2x - 7 what is the value of x hurry!!
Answer: x=-2
Step-by-step explanation:
Adam steps on a scale holding four bricks of equal weight. The scale reads 360 pounds. Write an equation relating Adam's weight and the weight of the bricks to the total weight shown on the scale. Use 'A' for Adam's weight and 'b' for the weight of a single brick.
Bananas cost $0.47 per pound and Amanda purchased x pounds. She spent a total of $1.41. Which equation expresses the amount Amanda spent on bananas?
0.47 + x = 1.41
0.47 - x = 1.41
0.47x = 1.41
1.41x = 0.47
[tex]0.47x = 1.41[/tex]
[tex]x = \frac{1.41}{0.47} = 3[/tex]
( PLEASE HURRY. ITS DUE IN 5 MINUTES. WILL GIVE BRAINLIEST)
In the diagram below. ∠A is 50. What is ∠B, and ∠C?
Given:
∠A = 50°In the diagram given, we can tell that:
∠A and ∠B are a linear pair.∠B and ∠C are a linear pair.This means that:
∠A + ∠B = 180°∠B + ∠C = 180°Step-1: Find ∠B.
∠A + ∠B = 180°=> 50 + ∠B = 180°=> ∠B = 180 - 50=> ∠B = 130°Step-2: Find ∠C.
∠A = ∠C (Vertically opposite angles=> ∠C = 50°∠A+∠B = 180° [Linear pair]
50+ ∠B = 180°
∠B = 180-50
∠B = 130°
[tex]\red{ \rule{35pt}{2pt}} \orange{ \rule{35pt}{2pt}} \color{yellow}{ \rule{35pt} {2pt}} \green{ \rule{35pt} {2pt}} \blue{ \rule{35pt} {2pt}} \purple{ \rule{35pt} {2pt}}[/tex]
Final answer ⤵️∠A = 50°∠B = 130°∠C = 50°