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3 years ago

Is the number a rational number? Help me out please!

Mathematics

2 answers:

krek1111 [17]3 years ago

8 0

Answer:

first answer

Step-by-step explanation:

Hi, this is correct because repeating decimals are rational numbers.

Rational numbers can be written by a fraction of integers.

If there is a pattern, it means that this is the division of two integers.

hope this helps

DENIUS [597]3 years ago

7 0

Answer:

yes

Step-by-step explanation:

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Use the diagram of the right triangle above and round your answer to the nearest hundredth.

Svetlanka [38]

Option a: $17.32 \ {m}$ is the length of b

Explanation:

The angle of B is $\angle B=60^{\circ}$ and $a=10 \ m$

We need to determine the length of b.

First, let us determine the angle of A.

Since, ABC is a triangle, then all the angles add up to 180°

Thus, we have,

$\angle A+\angle B+\angle C=180^{\circ}$

$\angle A+60^{\circ}+90^{\circ}=180^{\circ}$

$\angle A+150^{\circ}=180^{\circ}$

$\angle A=30^{\circ}$

Thus, the angle of A is $\angle A=30^{\circ}$

Now, we shall determine the length of b using the sine law formula.

The formula for sine law is given by,

$\frac{a}{\sin A}=\frac{b}{\sin B}$

where $a=10 \ m$ , $\angle A=30^{\circ}$ , $\angle B=60^{\circ}$

Thus, we have,

$\frac{10}{\sin 30}=\frac{b}{\sin 60}$

Simplifying, we get,

$\frac{10}{0.5}=\frac{b}{0.866}$

Multiplying both sides by 0.866, we get,

$\frac{10\times0.866}{0.5}=b$

Multiplying the numerator, we have,

$\frac{8.66}{0.5}=b$

Dividing, we get,

$17.32=b$

Thus, the length of b is $b=17.32 \ m$

Hence, Option a is the correct answer.

7 0

3 years ago

Maths a²(5a - 3b) -3a²

11Alexandr11 [23.1K]

Answer:

$5a^{3} - 3a^{2} b-3a^{2}$

Step-by-step explanation:

$a^{2} (5a-3b)-3a^{2} |$

Expand brackets

$5a^{3} - 3a^{2} b-3a^{2}$

Final Answer is

$5a^{3} - 3a^{2} b-3a^{2}$

4 0

2 years ago

Find the third term and the common difference. 1, 4, 7, 10

dusya [7]

Each term is equal the preceding term plus 3. Therefore the next term is 13 and the difference is +3.

6 0

4 years ago

PLS HELP !!! GIVING OUT BRAINLIEST ANSWER !! PLS HELP ASAP

never [62]

Answer:

The bottom one (D) the end it is sitting on

Step-by-step explanation:

what's there to explain xD

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3 years ago

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const2013 [10]

Answer: y = 4 and x = 1

Step-by-step explanation:

when y is 2, x is 0.5

when y is 4, x is 1

.(+ 2) .(+ 0.5)

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5 0

3 years ago

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