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Anna [14]
3 years ago
12

Is the square root of 21 is an irratoinal number true or false explain

Mathematics
1 answer:
MrRa [10]3 years ago
3 0

Yes it is because it has no square factors.

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Question 7(Multiple Choice Worth 1 points) (08.02 LC) Eva conducted a survey to find out the amount of time high schoolers spend
Lady bird [3.3K]

Answer:

The answer is "Option B".

Step-by-step explanation:

The difference between most time and also the least spending time on Internet surfing is 3 hours. Since we do not have charts for tables etc., only 3 can be used we need. A range is defined as the difference between the largest and the smallest amounts. The range between both the largest as well as the smallest is unique. In this reply, it tells us that the gap between most time and the fewer hours invested surfing the web is 3 hours.

  • In option A, it is wrong since the range has nothing to do with formulas. (Of course, the dividend with a divisor results in a quotient). Only subtraction and not division may be achieved.
  • In option C, when all surf for exactly one hour, it could take the largest time of 3 hours and 3 hours, the last time. Add it into the equation and the range of the data present would've been 0.
  • In option D, It is erroneous even as the range is not the mean, and the mean seems to be the average. We search for both the range, not the mean.

3 0
2 years ago
A substance has a density of 0.70 g/mL, if it has a volume of 3.0 mL, what is its mass?
Naddika [18.5K]

Answer:

<h2>2.1 g</h2>

Step-by-step explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 0.70 × 3

We have the final answer as

<h3>2.1 g</h3>

Hope this helps you

4 0
3 years ago
Reba needs to simplify the expression below. 6 1/2+3.5x2-7 divided by 3 Which operation should she perform first?
Veseljchak [2.6K]

Answer:

mutipication

Step-by-step explanation:

4 0
2 years ago
Question is on the photo. Thanks!
Elanso [62]

g(x) = 4x + 2

Step-by-step explanation:

f(x) = x + 2

f(4x) = 4x + 2

8 0
2 years ago
94 POINTS AND BRAINLIEST TO BEST ANSWER!!!
Schach [20]

Answer:

54

Step-by-step explanation:

Diagonals are perpendicular so

2x+ 90 + 3x = 180  since this forms a triangle

Combine like terms

5x+ 90 = 180

Subtract 90 from each side

5x +90-90 =180-90

5x = 90

Divide each side by 5

5x/5 = 90/5

x =18

We want to find Angle ABD

ABD = 3x = 3*18 = 54

7 0
3 years ago
Read 2 more answers
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