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Leno4ka [110]
3 years ago
13

Pls help me 20 points

Mathematics
2 answers:
Dominik [7]3 years ago
7 0
True, Every fraction is a rational number but a rational number need not be a fraction. ... Since every natural number is an integer. Therefore, a and b are integers. Thus, the fraction a/b is the quotient of two integers such that b ≠ 0.
Svetllana [295]3 years ago
7 0

Ture

Step-by-step explanation:

Every fraction is a rational number becaus its a fraction if that make sense

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What is the answer to the equation: 6/4=15/x ?
Nat2105 [25]
To be able to find the value of X, we have to cross multiply the two fractions then solve the equation.
As so,

6/4 = 15/x

Cross Multiply:

6 x X = 6x
4 x 15 = 60

We cross multiplied, now we can set up the equation:

6x = 60

Simplify: (Get X by itself)

Divide 6 on each side

6 / 6x = 60 / 6
x = 60 / 6
x = 10

Now we have the total of X! To check our answer, we can substitute X for 10 in the original equation.
As so:

6/4 = 15/10

6/4 = 1.5
15/10 = 1.5

Correct! Our answer is X = 10!

Hope I could help you out! If my math is incorrect, or I provided an answer you were not looking for, please let me know and I will be sure to assist you further! However, if my math was well, and correctly, explained, please consider marking my answer as <em>Brainliest!</em> :)

Have a good one!
God Bless.
7 0
3 years ago
Help please with question 5-8, show the solution
ludmilkaskok [199]

For each of these problems, remember SOH-CAH-TOA.

Sine = opposite/hypotenuse

Cosine = adjacent/hypotenuse

Tangent = opposite/adjacent

5) Here we are looking for the cosine of the 30 degree angle. Cosine uses the adjacent side to the angle over the hypotenuse. Therefore, cos(30) = 43/50.

6) We have an unknown side length, of which is adjacent to 22 degrees, and the length of the hypotenuse. Since we know the adjacent side and the hypotenuse, we should use Cosine. Therefore, our equation to find the missing side length is cos(22) = x / 15.

7) When finding an angle, we always use the inverse of the trigonometry function we originally used. Therefore, if sin(A) = 12/15, then the inverse of that would be sin^-1 (12/15) = A.

8) We are again using an inverse trigonometry function here. We know the hypotenuse, as well as the side adjacent to the angle. Therefore, we should use the inverse cosine function. Using the inverse cosine function gives us cos^-1 (9/13) = 46 degrees.

Hope this helps!

8 0
3 years ago
PLS HELP! What are the solutions of 4x^2-8x+5=0
Shkiper50 [21]
<span><span> x = -1/2 = -0.500
</span><span> x = 5/2 = 2.500

EITHER ONE WORKS</span></span>
3 0
3 years ago
Read 2 more answers
When i muiltplyied 3.675 x 10 i got 36.75. my question is why did the decimal move? and how.
qaws [65]

Answer:

It moved because of this:

Step-by-step explanation:

the number 10 has one 0 in it.

you move the decimal place over how many times depending on how many 0s there are, so because there is <u>one</u><u> </u>0 in 10, you move it over <u>once</u>.

hope this helped!

3 0
3 years ago
I am so lost on this question. I’ve never heard of a matrices so I have no clue where to even start to solve this problem.
balu736 [363]

Answer:

thas multiple matrix bro

Step-by-step explanation:

5 0
3 years ago
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