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3 years ago

15 is decreased to 3 What is the percent decrease? SUPER EASY AND URGENT!

Mathematics

2 answers:

Alenkasestr [34]3 years ago

5 0

Answer:

Its a 20% decrease :)

Step-by-step explanation:

Marta_Voda [28]3 years ago

4 0

Answer:

-20%

Step-by-step explanation:

You might be interested in

In 5 OR MORE SENTENCES, write a short story explaining the graph OR write about the key features of the graph.

rewona [7]

The graph illustrated is divided into three seperate sections namely A, B and C, the short story culled from the graph is described thus:

Rate of change or slope = (Rise/ Run)

Rise = y2 - y1
Run = x2 - x1

SECTION A:

Slope = (40 - 0) ÷ (20 - 0) = 40/20 = 2

Distance traveled = 50 meters

SECTION B :

This section gives an horizontal line, hence, the slope is 0.

Distance covered = 0 ; as there was no change in the distance over the period of time.

SECTION C:

Slope = (80 - 50) ÷ (70 - 60) = 30/10 = 3

The total distance traveled = 80 - 50 = 30 meters

The total distance and time spent traveling :

Total distance traveled = (50 + 30) = 80 meters

Total time spent = 70 seconds (time at the 80 meter mark)

Hence, the story.

Learn more : brainly.com/question/25309609

6 0

3 years ago

In an exam, there is a problem that 60% of students know the correct answer. However, thereis 15% chance that a student picked t

SpyIntel [72]

Answer:

0.231

Step-by-step explanation:

Let the Probability of students that knew the correct answer be: P(A)

P(A) = 60% = 0.6

Let the Probability that the student picked the wrong answer even if he/she knows the right answer be: P(B)

P(B) = 15% =0.15

Let the Probability of the student that do not knew the correct answer Be P(C)

P(C) = 1 - P(A)

P(C) = 1 - 0.6

P(C) = 0.4

Let the Probability that the student does not know the right answer but guessed it correctly be: P(D)

P(D) = 25% = 0.25

Let the Probability that the student picked the right answer even if he/she knows the right answer be: P(E)

P(E) = 1 - P(B)

P(E) = 1 - 0.15

P(E) = 0.85

Probability that the student got the answer wrong = (0.60 X 0.15) + (0.40 X 0.75) = 0.39

P( Student knew answer given he answered wrong) = $\frac{P(Student knew answer) X P(Student answered wrong given he knew the answer}{0.39}$

= $\frac{0.6*0.15}{0.39}$

= $\frac{0.09}{0.39}$

= 0.23076923077

= 0.231

6 0

4 years ago

Express 13 pi/6 as a function of an angle in quadrant i

nadya68 [22]

For this case, the first thing you should do is to know the following transformation:
pi radians = 180 degrees
Applying the transformation we have:
(13pi / 6) * (180 / pi) = 390 degrees
Then, in quadrant 1 we have:
390 - 360 = 30 degrees
Answer:
13 pi / 6 as a function of an angle in quadrant i is:
30 degrees

5 0

4 years ago

Read 2 more answers

Please answer as soon as possible (sorry for any lags)

maxonik [38]

Break into 2 volumes.
I chose 6 times 7 times 2 is 84
I also chose 2 times 3 times 2 is 12
Add to get 96 cm cubed

6 0

2 years ago

What is the arithmetic mean of the following numbers? 8, 10, 10, 10,6,7,8

Sphinxa [80]

Step-by-step explanation:

Arithmetic mean formula is

A=(x1+x2+x3+....+xn)/n

in this case

A=(8+10+10+10+6+7+8)/7=

=59/7=

=8.42857143~=8.4

4 0

3 years ago