1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marina CMI [18]
3 years ago
14

The graph show the grades that students received on a test. What percent of the students received a grade of A ?

Mathematics
1 answer:
Tema [17]3 years ago
7 0

Answer:

what graph..show the graph

Step-by-step explanation:

You might be interested in
Yesterday morning, at 6:00 AM, water started leaking from a tank at a constant rate. The tank contained8,496liters of water at 6
GREYUIT [131]

A linear equation can be written as:

y = a*x + b

where a is the slope and b is the y-intercept.

If we know that the line passes through the points (x₁, y₁) and (x₂, y₂) the slope is:

a = \frac{y_2 - y_1}{x_2 - x_1}

The answers are:

a) y = (-12 L/min)*t + 9,000 L

b) 6,840 L

a) Here we know that we can model this situation with a linear equation, we know that the leak starts at 6:00 am, then we define t = 0 as 6:00 am

We know that at 6:42 am  (at t = 42 mins) the tank has 8,496 liters.

And at 7:15 am (at t = 75 mins) the tank has 8,100 liters.

Then we have two points of the line:

(42 mins, 8,496 liters)

(75 mins, 8,100 liters)

Then the slope is:

a = \frac{8,100 liters - 8,496 liters }{75 mins -42 mins } = -12 L/min

So the line will be something like:

y = (-12 L/min)*t + b

To find the value of b, which is the initial volume of water in the tank, we use the point (75 mins, 8,100 liters)

This means that if t = 75 mins, then we have y = 8,100 L

So we can replace these two on the above equation:

8,100 L = (-12 L/min)*75 mins + b

8,100L = -900L + b

8,100L + 900L = b = 9,000 L

Then the linear equation is:

y = (-12 L/min)*t + 9,000 L

b) Now we want to know how much water is in the tank at 9:00 am.

Notice that 9:00 am is 3 hours after 6:00 am, our t = 0.

Then  9:00am is equivalent to t = 180 mins.

So to know the volume of water that there is in the tank at 9:00 am, we just need to evaluate the linear function at t = 180 mins.

y = (-12 L/min)*180 mins + 9,000 L = 6,840 L

If you want to learn more, you can read:

brainly.com/question/24594539

7 0
3 years ago
What is the volume cubic inches of a box when the length is 8 inches, the width is 3 inches and the height is 10 inches?
erica [24]

Answer:

240 inches cubed

Step-by-step explanation:

Volume = L x W x H

Take 8 x 10x 3 = 240

dont forget to put inches cubed (in.^3)

4 0
3 years ago
Read 2 more answers
Evaluate each expression If X equals six 4(x-5)
DochEvi [55]

Answer:

4

Step-by-step explanation:

Let us plug x in to the equation given that it equals 6.

4(6-5)=

4*1=

4

<em>Hope this helps! :)</em>

3 0
3 years ago
True of False:
Paul [167]
Probably:

True.

Probably.
3 0
3 years ago
Factor the expression using the GCF 21+15
Svet_ta [14]

Answer:

3(7+5)

Step-by-step explanation:

21+15

Each term is divisible by 3

3*7 +3*5

3(7+5)

6 0
3 years ago
Other questions:
  • (Can Someone PLEASE Help me) Which of the following steps in this proof contains a flaw?
    12·1 answer
  • If y = 4.5 when x = 2.5, find y when x = 12.
    6·1 answer
  • Write (-32)^-2 as an expression without a negative exponent please
    7·1 answer
  • What is 15 ft. × 18 ft.
    12·2 answers
  • Hello!
    5·1 answer
  • Last year 200 students participated in the Coastal Clean-Up.This year,260 students participated.What was the percent of change?
    9·1 answer
  • Solve for x pls i need the answer asap
    12·1 answer
  • A new car costs $23,000 and is depreciating by $900 each year.
    14·1 answer
  • What is -1/2 + (3/4 x 4/9)
    14·2 answers
  • Can someone help me out please??​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!