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4 years ago

Free points what is 2+2

Mathematics

2 answers:

olganol [36]4 years ago

5 0

Answer:

Step-by-step explanation:

thanks so much 2+2 equals 4 because that what it equals theres bo ther way

Scrat [10]4 years ago

3 0

Answer:

its not 4 :) its 4444444444444444444444444444444444444444444444444444444444444444444444444444

Step-by-step explanation:

lol thanks

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Between a mixture and substance which can be separated into components & what are the two ways?

notka56 [123]

Answer:

Step-by-step explanation:

Introduction:

Mixtures are not unique to chemistry; we encounter them on a daily basis. The food and drinks

we consume, the fuel we use in our vehicles, building materials, soil, air, and ordinary water are

all mixtures. In fact, very few common materials in the world are pure. Any material made up

of two or more substances that are not chemically combined is a mixture. It is not difficult to

separate the components of a mixture if you take advantage of differences in physical properties

of the components.

1. Sublimation. Some substances change directly from a solid to a gas when they

are heated. The reverse process, when the vapor goes back to the solid phase

without a liquid state in between, is called deposition. Some solids which sublime

are iodine, caffeine, and paradichlorobenzene (mothballs). Dry ice sublimes also.

2 Extraction. This uses a solvent to selectively dissolve one component of the

solid mixture. With this technique, a soluble substance can be separated from an

insoluble substance.

3. Decantation. This separates a liquid from insoluble solid sediment by carefully

pouring the liquid from the solid without disturbing the solid.

4. Filtration. This separates a solid from a liquid through the use of a porous

material as a filter. Paper, charcoal, or sand can serve as a filter. These materials

trap the solid but let the liquid pass through (see diagram in Procedure section).

5. Evaporation. This is the process of heating a mixture in order to remove a

liquid that evaporates easily, leaving a dry residue.

6 0

4 years ago

Read 2 more answers

jasmine wants to eat at 8:00 pm. her meal takes 65 minutes to cook. what time does she need to put the meal in the oven?

lidiya [134]

6:55 pm
60 minutes in an hour, so go back 1 hour which makes 7:00. Minus the extra 5 minutes which makes 6:55 pm

5 0

4 years ago

An angle measure 20 more than the measure of its supplementary angle.What is the measure of each angle?

SOVA2 [1]

Based on the definition of supplementary angles, the measure of both angles are: 80° and 100°.

<h3>What are Supplementary Angles?</h3>

The sum of angles that are supplementary to each other equals 180 degrees.

Let the measure of the supplementary angle be x.

The other angle will be: x + 20.

(x + 20) + x = 180

x + 20 + x = 180

2x + 20 = 180

2x = 180 - 20

2x = 160

x = 160/2

x = 80°

The other angle will be x + 20 = 80 + 20 = 100°.

The measure of the angles are: 80° and 100°.

Learn more about supplementary angles on:

brainly.com/question/8992900

#SPJ1

4 0

2 years ago

Voltage sags and swells. Refer to the Electrical Engineering (Vol. 95, 2013) study of transformer voltage sags and swells, Exerc

Artist 52 [7]

Answer:

a. z-score for the number of sags for this transformer is ≈ 1.57 . The number of sags found in this transformer is within the highest 6% of the number of sags found in the transformers.

b. z-score for the number of swells for this transformer is ≈ -3.36. The number of swells found in the transformer is extremely low and within the lowest 1%

Step-by-step explanation:

z score of sags and swells of a randomly selected transformer can be calculated using the equation

z= $\frac{X-M}{s}$ where

X is the number of sags/swells found

M is the mean number of sags/swells

s is the standard deviation

z-score for the number of sags for this transformer is:

z= $\frac{400-353}{30}$ ≈ 1.57

the number of sags found in the transformer is within the highest 6% of the number of sags found in the transformers.

z-score for the number of swells for this transformer is:

z= $\frac{100-184}{25}$ ≈ -3.36

the number of swells found in the transformer is extremely low and within the lowest 1%

5 0

3 years ago

(3n-1)+(4-n) please answer my question!!!!!

prisoha [69]

Collect the like terms
So 3n-n=2n and -1+4=3
(3n-1)+(4-n)=2n+3

7 0

3 years ago