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
True [87]
3 years ago
13

6.5 kg to 3.9 kg, what was the percent decrease

Mathematics
1 answer:
igomit [66]3 years ago
6 0

Answer: 40%

Step-by-step explanation:

Given,

Initial mass = 6.5kg

final mass = 3.9kg

So, Change in mass = initial mass - final mass

                                  = 6.5 - 3.9

                                  = 2.6 kg

and,

Change in percentage of mass = \frac{change in mass}{original mass} * 100

Change in percentage of mass = \frac{2.6}{6.5} * 100

                                                    = 40

You might be interested in
Help!!! pre cal! willl give points
RoseWind [281]

Answer:

1.6

Step-by-step explanation:

5 0
4 years ago
PLEASE I JUST WANT A GOOD GRADE The spinner below shows 10 equally sized slices. Diane spun the dial 50 times and got the follow
Andreyy89

Part (a)

The experimental or empirical probability is based on the results shown in the table. There are 13 instances of grey out of 50 spins total. Therefore, we end up with an experimental probability of 13/50. This converts to the decimal form 0.26

<h3>Answer:  0.26</h3>

===============================================

Part (b)

Since each slice is of equal size, this means theoretically each slice should have the same chance of being landed on. We have 3 grey slices out of 10 total. The probability of landing on a grey space is 3/10 = 0.3

<h3>Answer:  0.3</h3>

===============================================

Part (c)

<h3>Answer: Choice A) </h3>

As the number of spins increases, we expect the experimental and theoretical probabilities to become closer, though they might not be equal.

The theoretical probability is locked to 0.3 the whole time (only the experimental probability changes). This is according to the Law of Large Numbers.

7 0
3 years ago
During an experiment, Mrs. Melsoner uses an analytical scale to measure the mass of a substance. The analytical scale says she h
stich3 [128]

Answer:

hii there

The correct answer is ( D )

hope it helps you

have a nice day

7 0
3 years ago
In 2012, New York had a population of about 19 million people,
alexandr1967 [171]

Answer:

B(if the option is 10^7 instead of  107

Step-by-step explanation:

no. of people in New York=19000000

no. of people in Vermont =626,000

difference in populations = 19000000-626,000 =18374000

therefore, the difference in populations is 18374000

(which can also be written as 1.8374x10^7)

7 0
3 years ago
3q+4+9=-14 <br> what is Q
BlackZzzverrR [31]

Hi! Your answer is q = -9

Please see an explanation for a better and clear understanding to your problem.

Any questions about my answer and explanation can be asked through comments! :)

Step-by-step explanation:

Since we want to solve for q-term. That means we are going to isolate q-term.

\huge{3q+4+9=-14}

We can add 4 and 9 together.

\huge{3q+13=-14}

Because we want to know the value of q. That means we have to isolate q-term by subtracting both sides by 13.

\huge{3q+13-13=-14-13}\\\huge{3q=-27}

We are reaching to the final step where we divide the whole equation by 3.

\huge{\frac{3q}{3}=-\frac{27}{3}}\\\huge{q=-9}

Finally, the solution for this equation is q = -9. But what if you are not certain or sure about the answer? Let's check it out!

To check the answer, simply substitute q = -9 in the equation.

\huge{3q+4+9=-14}\\\huge{3(-9)+13=-14}\\\huge{-27+13=-14}\\\huge{-14=-14}

Notice that the equation is true for q = -9. Hence, we can conclude that the solution for this equation is q = -9.

Hope this helps!

5 0
3 years ago
Other questions:
  • Find the quotient 6 divided 27L 600 mL
    14·1 answer
  • How many times greater is the value of the 2 in 420,300 than the value of the 2 in 65,126
    10·2 answers
  • Which equation is the inverse of y = 100 – x2?
    13·2 answers
  • A traffic officer is monitoring traffic on a windy section of road that has a speed limit of 55 miles per hour. A car speeds pas
    13·1 answer
  • You had a pool party that ended up costing
    15·1 answer
  • On a test, the number of questions Pam answered correctly was
    9·1 answer
  • Can someone help me with this?
    7·1 answer
  • What sample size is needed to give a margin of error within +-6 in estimating a population mean with 95% confidence, assuming a
    12·1 answer
  • Find the area of the patio
    12·1 answer
  • What is 5x-2y=4 6x+3y=-6
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!