In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Joyce has scored 90, 93, and 85 on the first three. What range of scores on the fourth test will give Joyce a C for the semester (an average between 70 and 79, inclusive)? Assume that all test scores have a non-negative value.

Express your answer in interval notation.


HELP ASAP BRAINLEST AND THANKS

Answer:

10

Step-by-step explanation:

2pi(5) is 31.42.

31.42/pi gets you exactly 10pi meters.

Answer:

The number of :

Red carnations sold = x = 692 carnations

Pink carnations sold = y = 231 carnations

Step-by-step explanation:

Let us represent

The number of :

Red carnations = x

Pink carnations = y

The Student Advisory Council here at PC sells red and pink carnations every year for Valentine's Day.

The number of red carnations sold was 1 less than 3 times the number of pink carnations sold.

x = 3y - 1 .....Equation 1

Red carnations were sold for $0.60 each and Pink Carnations sold for $0.80 each. The club made $600.00. .

$0.60 × x + 0.80 × y = $600

0.6x + 0.80y = 600...... Equation 2

Using substitution method:

Let us substitute, 3y - 1 for x in Equation 2

0.6(3y - 1) + 0.80y = 600

1.8y - 0.6 + 0.80y = 600

1.8y + 0.80y = 600 + 0.6

2.6y = 600.6

y = 600.6 ÷ 2.6

y = 231 carnations

Solving for x

x = 3y - 1 .....Equation 1

x = 3(231) - 1

x =693 − 1

x = 692 carnations

Therefore, The number of :

Red carnations = x = 692 carnations

Pink carnations = y = 231 carnations

Answer:

5:05 PM

Step-by-step explanation:

Each 30 minutes, we have a change of -0.75

So in an hour , we will have a change of -0.75 * 2 = -1.5

since -2.1 is greater than -4.6, this indicates that it was a time before 6:45 PM

so, let us find the temperature drop

That would be;

-2.1-(-4.6) = -2.1 + 4.6 = 2.5

So let us find the number of half hours

That would be;

2.5/0.75 = 3 1/3 half hours

3 half hours is 90 minutes

1/3 half hour is 1/3 * 30 = 10 minutes

Total number of minutes is;

90 + 10 = 100 minutes

So let us count 100 minutes before 6:45 PM

120 minutes before would be;

4:45 PM

but we want 100 minutes, so we have to add 20 minutes

That would be;

4:45 PM + 20 minutes

= 4:65 which is 5 : 05 PM

Answer:

sure

Step-by-step explanation:

Answer:

100π in3

Step-by-step explanation:

I took the test

Answer:

V= 100 π ^3

Step-by-step explanation:

V= π r^2 h/3

13^2 = 5^2 + h^2, h=12

V=π 5^2 12/3

V=π. 25. 4

V= 100 π ^3

Answer:

112 meters

Step-by-step explanation:

Step-by-step answer:  

5(12×11)-(5^5)+9

5(12×11)-3,125+9

5(144)-3,125+9

720-3,125+9

-2,405+9

-2,396

Plzzzzz give me Brainliest!!!!!  

Answer: The price has gone up .07.

Step-by-step explanation:

07/2.80   x 100 = 2.5% increase

Answer: 8.5

Step-by-step explanation: we was doing this in class

Answer:

8.4

Step-by-step explanation:

Answer:

42

Step-by-step explanation:

Answer:

I'm not 100% sure about this but i think its 42

Step-by-step explanation:

this is what i did

32/16=2

2*21=42

Answer:

so if you add 15+7=22 and he paid 29 dollars total he will be able to rent it once because 22+22=44 so he will only be able to rent it for 1hr

Step-by-step explanation:

Answer:

12 inches

Step-by-step explanation:

1 x 4 = 4

16 - 4 = 12

Snow after 4 hours: 16 Show after t hours: -1t

Snow after 4 hours:

starting amount =  16

melted snow=   inches per hour×4

=1×4

=

4

final amount=  starting amount−melted snow

=  16−4

=12

​

Snow after t hours:

starting amount=  16

melted snow=  inches per hour×t

=1×t

=1t

final amount=  starting amount−melted snow  =16-1t

​

Answer:

true

Step-by-step explanation:

Answer:

10.15 is 29% of 35.

Step-by-step explanation:

Answer:

Yes.

Step-by-step explanation:

Answer:

5.36/20

0.268 dollars per oz

Step-by-step explanation:

Answer:

the answer is 4

Step-by-step explanation:

|5-3-2|

|2--2|

|2+2|

|4|

4

Answer:

.12

Step-by-step explanation:

The cost of each pencil is 0.12.

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

Given that

Miranda wants to buy pencils printed with the school mascot. The graph below represents the cost for different numbers of pencils.

Number of pencils on x axis and cost on y axis.

We have to take any point from graph.

Let the point be (100,12)

Let x be the cost of each pencil be x.

100x=12

Divide both sides by 100

x=12/100

x=0.12

Therefore cost of each pencil be 0.12

To learn more on Graphs click:

https://brainly.com/question/17267403

#SPJ2

Answer:

k =4

Step-by-step explanation:

you ask your self what + 12 = 16

Answer:

K=4

Step-by-step explanation:

Answer: ? + 12 = 16

Answer:

Someone ples answer this

Step-by-step explanation:

It’s so hard

Answer:

Sophia can drive 3672 miles using 18 gallons of gas.

Step-by-step explanation:

204 x 18 = 3672.

Answer: 35 minutes

Step-by-step explanation: 60 - 25 minutes

Answer:

35 minutes....

Answer:

z=5

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

6z-4z=10

z=5

PlZ Make me brainliest

Answer:

This is a function, because for every x-value, there is exactly one y-value.

The domain is: {-5, -4, -3, -2}, and the range is {-2, -1, 0}

Let me know if this helps!

Answer:

3550 (6th graders)

Step-by-step explanation:

71% of 5000=5000/100*71=3550students

Answer:

1 = 3

2= 21/5

3=5/6

4=3/8

Step-by-step explanation:

1 explanation

3/4 (8/2) =

(3/4) (8/2)=

(3)(4)/(4)(1)

12/4 =3

2 explanation

7/1(3/5) =

(7/1 ) (3/5)  divide tht u get 21/5

3 explanation 5/6(1) =5/6

4 explanation

u rewrite the equation then

(3/4) (1/2

3x 1 is 3 4x 2 is 8 so 3/8

Answer:

24

Step-by-step explanation:

8 times 3 TwT

Answer:

68°+47°+ x = 180°

115°+ x = 180°

115°-115°+x = 180°-115°

x = 65°

hope it's helpful ❤❤❤❤

THANK YOU.