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
IceJOKER [234]
3 years ago
5

How many students scored below 80?

Mathematics
2 answers:
Sholpan [36]3 years ago
8 0
The answer to this question is 11
sladkih [1.3K]3 years ago
6 0

Answer:

11

Step-by-step explanation:

You might be interested in
9. If you invest $2000 an account that pays 8 % interest
marissa [1.9K]

Answer:

2000 * 1.08 * 1.08 * 1,08 ....

well, since we are multiplying the same number over and over, let's just write

2000 \times {1.08}^{20}

equals

$9321.91

7 0
3 years ago
The length of a rectangle is 5ft longer than twice the width if the perimeter is 58 ft find the length and width of the rectangl
Travka [436]
----------------------------------
Define x :
----------------------------------
Let the width be x.
Width = x
Length = 2x + 5                // Length is 5ft longer than twice the width

----------------------------------
Formula for Perimeter :
----------------------------------
Perimeter = 2 (Length + Width)

----------------------------------
Find Width :
----------------------------------
58 = 2 ( 2x + 5 + x)         // Substitute Length and Width into formula
58 = 2 (3x + 5)                // Combine like terms
58 = 6x + 10                    // Apply distributive property
48 = 6x                            // Take away 10 from both sides
6x = 48                            // Switch sides. Make x the subject
x = 8                                // Divide by 6 on both sides

----------------------------------
Find Length and Width :
----------------------------------
Width = x = 8 ft
Length = 2x + 5 = 2(8) + 5 = 21 ft

--------------------------------------------------------------------
Answer: The length is 21 ft and the width is 8 ft.
--------------------------------------------------------------------

3 0
3 years ago
Read 2 more answers
For safety reasons, 3 different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hills
r-ruslan [8.4K]

Answer:

0.998272 (0.998 in 3sf)

Step-by-step explanation:

Probability(detects) = 0.88

Probability(doesn't detect) = 1 - 0.88 = 0.12

Total probability is always 1

Probability of atleast one detecting = 1 - probability(all not detecting)

= 1 - (0.12×0.12×0.12)

= 1 - 0.001728

= 0.998272

3 0
4 years ago
At 5 seconds, an object's velocity is 9 meters per second. At 8 seconds, the object's velocity is 25 meters per second. Assuming
ivanzaharov [21]
The formula for acceleration is (∆v)/(∆t), or (final velocity - initial velocity)/(final time - initial time). If you input your values the problem would work out as followed: 

A = <span>(∆v)/(∆t)
A = (25-9)/(8-5)
A = 16/3
A = 21.33 (rounded to the nearest hundredth)</span>
8 0
3 years ago
Please help ASAP will give brainliest
umka21 [38]

Answer:

B and E

Step-by-step explanation:

Hope it helps

4 0
4 years ago
Read 2 more answers
Other questions:
  • 7/4 times what equals 56
    14·1 answer
  • At a local restaurant, the amount of time that customers have to wait for their food is normally distributed with a mean of 18 m
    5·1 answer
  • Arrange the circles (represented by their equations in general form) in ascending order of their radius lengths.
    6·2 answers
  • Help me solve this problem please
    15·1 answer
  • The volume of a cylinder is 62.8 cubic meters and the radius is 2 meters.
    12·1 answer
  • A scuba diver is 31 feet below the surface of the water. She dives down an additional 16 feet. How far would she have to rise to
    5·1 answer
  • . What is the slope of a line with the equation y = 5x + 35 ? ​
    9·1 answer
  • Use the order of operations to simplify + 8(2.5 – 0.5).
    7·2 answers
  • PLEASE HELP!!!!
    9·1 answer
  • Which property is this an example of?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!