Each of four test scores in Connie’s class is to be weighted equally. On the first three tests, Connie scored 80%, 90% and 95%. What percent must she score on her fourth test to have an overall average of exactly 90%?

Answers

Answer 1

Answer:

95%is the answer

Step-by-step explanation:

Answer 2

Answer:

95%

Step-by-step explanation:

We can use the balancing method to do this.. first what is the total below 90?

The total is 10% because 90-80 which was the only percentage below 90 is 10%. Then, what is the total above 90?

The total is 5% because the only percentage above 90 is 95 and 95-90 is 5%

Now we use the balancing method to get from 5-10.

Using the balancing method we get 95%


Related Questions

The graph shows a proportional relationship.

Which equation matches the graph?

A. y = 1/4x

B. y = 4x

C. y = 12x

D. y = x​

Answers

Answer:

C

Step-by-step explanation:

The equation matches the graph is y= 4x.

the correct option is B.

What is Slope?

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the

change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx where, m is the slope

We have line graph from which we can consider two points as (1, 4) and (3, 12).

So, the slope of line

m = (12 - 4)/ (3-1)

m= 8/ 2

m= 4

Now, using slope intercept form

y= mx+b

y= 4x + b

Now, put x= 1 and y=4 in above equation

4 = 4 + b

b= 0

So, the Equation of line is y= 4x.

Learn more about Slope here:

https://brainly.com/question/3605446

#SPJ7

Which statement best explains the relationship
between lines FG and HJ?
O They are perpendicular because their slopes are
equal.
O They are perpendicular because their slopes are
negative reciprocals.
They are not perpendicular because their slopes
are equal.
They are not perpendicular because their slopes
are not negative reciprocals.

Answers

Answer:

They are not perpendicular because their slopes are not negative reciprocals.

Step-by-step explanation:

Graph the line y=-1/4x+6

Answers

This is your perfect answer



A triangular flag has 2 sides with lengths 2 x and 1 side with length x.

A flag is the shape of an isosceles triangle, with two equal sides and a base. Sara has enough fabric to make a flag with a perimeter of 46.8 cm. She knows the flag needs a base that is half the distance of one of the sides.

What is the base of the largest triangular flag Sara can make?

cm.

Answers

Step-by-step explanation:

Perimeter = x + 2x + 2x = 5x

Since 5x <= 46.8cm, x <= 9.36cm.

The largest base is 9.36cm.

Answer:

9.36 is correct

Step-by-step explanation:

Kelly read 30 pages of her 300-page book in 6 hours. At this rate, how long will it take her to read the entire book? (5 points) 6 hours 5 hours 60 hours 30 hours

Answers

Answer:

It is 60 hours

Step-by-step explanation: 30 pages = 6 hours

30 × 10 = 300

6 × 10 = 60

Answer:

60

Step-by-step explanation:

trust me

2.3a+3.5b-1.8a-2.7b simplify. Show work.

Answers

Answer:

a = -1.6b

Step-by-step explanation:

Simplifying

2.3a + -1.8a + 3.5b + -2.7b = 0

Combine like terms: 2.3a + -1.8a = 0.5a

0.5a + 3.5b + -2.7b = 0

Combine like terms: 3.5b + -2.7b = 0.8b

0.5a + 0.8b = 0

Solving

0.5a + 0.8b = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-0.8b' to each side of the equation.

0.5a + 0.8b + -0.8b = 0 + -0.8b

Combine like terms: 0.8b + -0.8b = 0.0

0.5a + 0.0 = 0 + -0.8b

0.5a = 0 + -0.8b

Remove the zero:

0.5a = -0.8b

Divide each side by '0.5'.

a = -1.6b

Write the statement as an equation Anumber decreased by six is five more than twice the number.

Answers

let the numbers be x

x-6-5=2x

Answer:

x - 6 = 2x + 5

Step-by-step explanation:

Let's break down the statement.

A number decreased by six means a number/variable subtracted by six. So, we have x - 6.

Five more than twice a number means five plus two times a number/variable. So, we have 2x + 5.

The 'is' in the middle of the statement signifies that they are equal to each other.

The equation would be x - 6 = 2x + 5.

Hope that helps.

Jill would like an increase in the hourly wage she receives from the Mathematics Research Center, where she works in the mail room. Her boss gives her an equation to solve, telling her that her raise is the solution to the equation, but only if she can solve it. The equation is x 2- 6x + 9 = 0. What was the amount of her raise per hour? Answer:

Answers

Answer:

Jill will receive an increase of $3 per hour

Step-by-step explanation:

The Quadratic Equation

The quadratic equation can be represented in the standard form as:

[tex]ax^2+bx+c=0[/tex]

being a,b, and c are constants.

It can be solved by using the quadratic formula:

[tex]\displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

Jill would like an increase in her hourly wage. The increase will come as the solution for a maths equation.

She must solve the equation:

[tex]x^2-6x+9=0[/tex]

The solution to the equation, or value of x, is the increase in her hourly wage.

Comparing with the general form, we have a=1, b=-6, c=9. Thus, the solutions are:

[tex]\displaystyle x=\frac{-(-6)\pm \sqrt{(-6)^2-4(1)(9)}}{2(1)}[/tex]

[tex]\displaystyle x=\frac{6\pm \sqrt{36-36}}{2}[/tex]

[tex]\displaystyle x=\frac{6\pm \sqrt{0}}{2}[/tex]

The square root is 0, therefore is only one solution:

[tex]\displaystyle x=\frac{6}{2}=3[/tex]

x = 3

Thus, her raise per hour is $3.

Given m||n, find the value of x;

Answers

Answer:

i think its 24 because its the alternate exterior so it should be the same.

Step-by-step explanation:

Answer:

24

Step-by-step explanation:

KJananwnwwnnwnwnwnwnw

What is the product of 12 and 5 decreased by 17

Answers

Answer:

43

Step-by-step explanation:

Answer: 43

Step-by-step explanation:

12x5-17 would be the equation

60-17 multiplication due to PEMDAS

43 subtraction

In the game of rock, paper,scissors, two people play, and equally likely that you will win, lose or tie. Find the probability of having different outcomes in two tries.
A) 2/3
B) 1/2
C)1/3
D)5/9

Answers

The answer is C I think

Prove that for any natural value of n the value of the expression (n+2)^2-(n-2)^2 is a multiple of 8.

Answers

Answer:

We have the expression:

(n + 2)^2 - (n - 2)^2

Let´s break the parentheses:

(n + 2)^2 = n^2 + 4*n + 4

(n - 2)^2 = n^2 - 4n + 4

Then:

(n + 2)^2  - (n - 2)^2 = (n^2 + 4*n + 4) - (n^2 - 4n + 4) =

                                 = (n^2 - n^2) + (4 - 4) + (4n - (-4n)) = 4n - (-4n) = 8*n

Then for any natural value of n, 8*n will be a multiple of 8.

Write the linear equation in slope-intercept form, 5x − 2y = 10

Answers

Answer:

y=5x-2

Step-by-step explanation:

Free Brainliest
There are 7 red, 6 blue, 12 green and 9 yellow marbles in a bag. What is the probability of not selecting a red or yellow marble?

Answers

Answer:

there are 5 red marbles, 8 blue marbles, and 12 green marbles in a bag.

Step-by-step explanation:

Answer:

I believe its 52.94% (53 rounded)

Step-by-step explanation: First add all the numbers to see the total amount of marbles (34) Second is add the marbles that are NOT red or yellow (18).Then the final step is divide 18/34

Hope this helps and have a great day

Which of the following situations results in a sum of 1 1/2 ? Select all that apply .

1. I painted 5/8 of one room and 7/8 of another .

2. I gained 6 1/2 pounds and my wife lost 8 pounds .

3. I had 4 1/4 bottles of juice and drank 1 3/4 of them .


4. I cut 3 1/3 inches from my grass. The grass grew 1 5/6 inches over the next week .

5.I used up 1/4 of a pound of coffee and bought 1 1/4 of a Pound of coffee from the store .

6. I used 3/4 of a pound of ground beef to make burgers and purchased 2 1/4 of a pound of ground beef .

Answers ASAP!!!!

Answers

Answer:

A, E, And D

Step-by-step explanation:

i did the quiz :)

These points are linear. Find the slope.

Answers

Answer:

Slope = 3/2

Step-by-step explanation:

The slope of an equation is rise/run, or y/x.

Since the graph indicates that y rises by 3 and x rises by 2, the slope would be 3/2

Answer:

[tex]\frac{3}{2}[/tex]

Step-by-step explanation:

To find the slope of a line, you need to find the [tex]\frac{rise}{run}[/tex] between two points. I will be calculating the slope using the two points (2, 3) and (4, 6).

Slope = [tex]\frac{rise}{run}[/tex]

          = [tex]\frac{6-3}{4-2}[/tex]

          = [tex]\frac{3}{2}[/tex]

Find the reference angle for a rotation of 220°.

Answers

Answer:

ans is 40 degree

i hope this is correct

I think it’s 140. 360-220=140

Pls help a girl out :/ and show work pls

Answers

I’m guessing the answer would be b

Answer:

it is B

Step-by-step explanation:


Help I’ll thank you a lot :)

Answers

the equation is y=1/3x+3

the absolute value of 15.3 is the opposite of 15.3?​

Answers

Answer:

No. The absolute value of 15.3 is 15.3, not the opposite.

Step-by-step explanation:

Absolute value makes any number its positive form. For example -2 in absolute form is 2. So 15.3 in absolute form is still positive 15.3.

You run 6 miles in one hour and 24 miles in four hours.
a. 6 miles
per hour
c. 4 hours
b. 4 miles per hour
d. 6 miles

Answers

Answer:b

Step-by-step explanation:

A is carrect 24/4 6 mile

There is 10 inches of water in a bucket. The water is leaking out of the bucket at a rate of 1 inch per hour. How many hours will it take for the bucket
to fully empty?
Type your answer...

Answers

10 is the answer as 1x10=10 so 10 hours

a) Solve x² + 4x - 8 = 0 by completing the square​

Answers

Answer:

x = 2 + 2i, x = 2 - 2i

Step-by-step explanation:

[tex] {x}^{2} - 4x + 8 = 0 \\ \\ {x}^{2} - 4x + 4 + 4= 0 \\ \\ {x}^{2} - 4x + {(2)}^{2} = - 4 \\ \\ {(x - 2)}^{2} = - 4 \\ \\ x - 2 = \pm \sqrt{ - 4} \\ \\ x - 2 = 2i \\ \\ x = 2 \pm 2i \\ \\ x = 2 + 2i, \: \: \: x = 2 - 2i[/tex]

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Answers

Answer:

monke

Step-by-step explanation:

delicious

someone sells a product for 10 cents and he sells 1000 products, how much money did he earn

Answers

Answer:

$100

Step-by-step explanation:

10¢ × 1,000 = 10,000¢To convert to dollars: Cents ÷ cents in 1 dollarTo convert to dollars: 10,000¢ ÷ 100¢ = $100

I hope this helps!

He earns $100 from selling

If the point (x, y) is in Quadrant IV, which of the following must be true?

Answers

Answer:

Any coordinate point with (positive x, negative y)

Value of 5.3x10 4.2x10 scientific notation

Answers

what????????????????

Help with both please the picture has the instructions:)

Answers

Question 1.

The equation is y = 2x + 5

If you put in any x value given in the table the answer given in the y table of values is incorrect.

For example :

y = 2x + 5

y = 2 x -3 + 5

y = -1

Question 2.

The equation is y = x + 4

Sub an x value into the equation

X = 2

y = 2 + 4

y = 6

He subtracted 4 instead of added.




A boat traveled 54 km with the stream and 42 km against the stream spending a total of as much time as it would spend while travelling 96 km in a lake. Find the speed of boat while it is travelling in the lake, if the current of the river is 3 km/hour.

Answers

Answer:

18 miles / hour

✨help✨

Madonna loves records. She has 338 of them. Her grand father gives her some for her birthday. She ends up with 456 after her birthday. At what percent did her grandfather give her. (I know it's a funky question. You have to divide the amount and then round it to the nearest hundred)

Answers

Answer:

34.9%

Step-by-step explanation:

Ok, we need to express this number as a percent of increase. So, what we'll do is write this as a proportion.

456/338 = x/100

456 x 100 = 338x

45600 = 338x

x = 134.911242604

A 34.9% increase

Answer:

17.53%

Step-by-step explanation:

Initial number = 388Final number = 456

Increase in number:

456 - 388 = 68

Increase in percent:

68/388*100% = 17.53% rounded to the nearest hundreds
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