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Dovator [93]
2 years ago
9

Twice a number added to six results in thirsty

Mathematics
1 answer:
horsena [70]2 years ago
7 0

Answer: 6+2n=30

Step-by-step explanation:

Since you did not say what you need to do, I will assume that you need to write an equation.

In order to solve this exercise it is important to remember the following:

1. The word "Twice" indicates you must multiply by 2.

2. The word "result" indicates an equal sign = .

Then, based on the explained above, you know that "Twice a number" can be represented with the following expression:

2n

Where "n" is the number mentioned.

Then, you know that "Twice a number added to six" can be expressed as following:

6+2n

 Therefore, you can conclude that "Twice a number added to six results in thirsty" can be represented with the following equation:

6+2n=30

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Part c. And also if I did A & B right.
Bezzdna [24]
Part a. and part b. are definitely correct
To do part c. you have to take into account that a triangle is 180degrees. So angle 1= 70, angle 2= 65 so angle 1+ angle 2+ angle 7=180degrees
angle 7= 180-65-70=45


Ans: 45degrees
7 0
3 years ago
A room with poor air quality has a particle concentration of 80 units. ​A fan removes 50% of the remaining particles each hour.
Eddi Din [679]

Answer:

20 units

Step-by-step explanation:

Initial particle concentration = 80 units

Particles removed each hour = 50% of the remaining particles

To find:

Particle concentration after 2 hours = ?

Solution:

Particles removed in 1 hour = 50% of remaining particles

i.e. Particles removed in 1 hour = 50% of initial concentration

Particles removed in 1 hour = 50% of 80 = 40

Particles removed in next 1 hour = 50% of remaining particles

i.e. Particles removed in next 1 hour = 50% of concentration after 1 hour

Particles removed in next 1 hour = 50% of 40 = 20

Total particles concentration removed in 2 hours = 40 + 20 = 60 units

Therefore, particle concentration after 2 hours = Initial concentration - Total particle concentration removed in 2 hours

= 80 - 60 = <em>20 units</em>

8 0
3 years ago
The length of the rectangle is increased by 10%.
jonny [76]

Answer:

8% increase

Step-by-step explanation:

The length after the increase:

30 x 1.1 = 33cm

The width after the increase:

20 x 1.05 = 21cm

New perimeter:

2(33 + 21) = 108 cm^2

Old perimeter:

2(30 + 20) = 100 cm^2

Percentage increase of area:

108 / 100 = 1.08 = 8% increase

3 0
2 years ago
Read 2 more answers
Locus <br>which figure is described below ? midpoints of radii of a circle
Oksana_A [137]

Answer:

<h2><u>B. Circle</u></h2>

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Suppose that light travels from water to another substance, with an angle of Incidence of 10.0º and an angle of refraction of 14
SVEN [57.7K]

The index of the refraction is 0.898 and the index of the refraction is less than one which is unreasonable because the speed of the light can't be more than c.

<h3>What is refraction?</h3>

The phenomenon bending of a wave as it crosses from one medium to another is said to be refraction. The difference in density is the cause of the bending.

Refraction is a term that is used to describe the phenomenon of refraction."The change in direction of a wave traveling through one medium to another is known as refraction."

From the Snell's law:

nsinФ = n'sin∅

We have n' = 1.33, ∅ = 10.0°, Ф = 14.9°

nsin110.0° = 1.33×sin14.9°

n = 0.898

Because the speed of light cannot be greater than c, the index of refraction is less than one, which is illogical.

It is illogical to assume that the angle of refraction is excessively large in relation to the angle of incidence.

Thus, the index of the refraction is 0.898 and the index of the refraction is less than one which is unreasonable because the speed of the light can't be more than c.

Learn more about the refraction here:

brainly.com/question/17156275

#SPJ1

4 0
2 years ago
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