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
bagirrra123 [75]
3 years ago
13

Identify the law illustrated by:20x +50 is the same as 50+20x​

Mathematics
2 answers:
Alisiya [41]3 years ago
8 0

Answer:

The law is the Inverse law of Addition/Multiplication

Step-by-step explanation:

lions [1.4K]3 years ago
7 0

Answer:

commutative law of addition

Step-by-step explanation:

commutative law of addition is: a+b=b+a

In your example a=20x and b=50.

You might be interested in
Charlotte started soccer practice at 5:30 pm. Practice lasted for 1 hour and 45 minutes. What time was practice over?
andreyandreev [35.5K]
It ended at 7:15 PM
4 0
3 years ago
Read 2 more answers
A data set lists weights​ (lb) of plastic discarded by households. The highest weight is 5.24 ​lb, the mean of all of the weight
Vladimir [108]

Answer:

a) 3.308 lb

b) That difference is 2.91 standard deviations.

c) Z = 2.91

d) We have that Z = 2.91 > 2, so the weight of 5.24lb is significantly high.

Step-by-step explanation:

The z-score formula is given by:

Z = \frac{X - \mu}{\sigma}

In which: X is the weight we are going to find the z-score of, \mu is the mean of all the weights and \sigma is the standard deviation of all the weights.

The problems gives these following informations:

The highest weight is 5.24 ​lb

The mean of all the weights is 1.932 lb

The standard deviation of all the weights is 1.135 lb

a. What is the difference between the weight of 5.24 lb and the mean of the​ weights?

D = 5.24lb - 1.932lb = 3.308lb

b. How many standard deviations is that​ [the difference found in part​ (a)]?

The difference found in (a) is 3.308lb.

This can be calculated by a simple rule of three.

1 standard deviation - 1.135lb

x standard deviations - 3.308lb

1.135x = 3.308

x = \frac{3.308}{1.135}

x = 2.91

That difference is 2.91 standard deviations.

c. Convert the weight of 5.24 lb to a z score.

We have that:

X = 5.24, \mu = 1.932 and \sigma = 1.135. So:

Z = \frac{X - \mu}{\sigma} = \frac{5.24 - 1.932}{1.135} = 2.91

3 0
3 years ago
How do you get the answer for 820 decreased by 25%
pentagon [3]
So in this one, we are DECREASING by 25%, so we say 25% of 820...

25% × 820 =
.25 × 820 = 205

Now since we are decreasing by 25%, we take our answer and subtract it from the original amount, 820.

820 - 205 = 615

820 decreased by 25% is
615.
7 0
3 years ago
In a certain Algebra 2 class of 26 students, 5 of them play basketball and 12 of them play baseball. There are 12 students who p
AlladinOne [14]

Answer:

15/27

Step-by-step explanation:

If 12 of the kids don't play either sport, you take the class size (26) minus the number of kids who don't play sports (12) to get 15. Therefore, 15 of the kids play one of those two sports, hence 15/27, or 55.55%

4 0
3 years ago
If you are framing a photo that is 4in by 7 in, and you want the frame to be the same width all around, and the total area of th
aliina [53]

Answer:

<em>3.36in</em>

Step-by-step explanation:

The total surface area of the cardboard is expressed as;

TSA = 2(LW + LH + WH)

L is the length = 4in

W is the width

H is the height = 7in

TSA = 130in²

Substitute the given values into the formula and get the width W

TSA = 2(LW + LH + WH)

130 = 2(4W+4(7) + 7W)

130 = 2(11W+28)

130 = 22W+56

22W = 130 - 56

22S = 74

W = 74/22

<em>W = 3.36in</em>

<em>hence the width of the photo is 3.36in</em>

4 0
2 years ago
Other questions:
  • What two numbers multiply together to equal -32 and add together to equal positive four
    5·2 answers
  • Sandra has a cylindrical mold for making candles with a radius of 3.4 cm and a height of 6 cm. If Sandra uses a rectangular bloc
    15·1 answer
  • A piece of art is in the shape of an equilateral triangle with sides of 6 in. Find the area of the piece of art. Round your answ
    12·2 answers
  • Melissa averages a rate of 1.5 steps per second while walking. How many steps will she take in an hour if this rate continues?
    13·1 answer
  • The subject of the formula below is y. y=x-5 rearrange the formula to make x the subject
    8·1 answer
  • Use formulas to find the lateral area and surface area of the given prism. round your answer to the nearest whole number.
    13·1 answer
  • 35 Points!!!!! select all of the following in which an object will remain congruent with its transformations.
    13·1 answer
  • The natural numbers are a subset of all of the following sets except the _____.
    15·2 answers
  • The blanks are the ones that are pointed please answer them thx!
    8·1 answer
  • Must look at pick please help
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!