MARKING BRAINLIEST Simplify into one fraction

Mathematics

1 answer:

Vitek1552 [10]3 years ago

3 0

The correct answer would be A.

You got it correct! Good job. Have a nice day:)

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Alan had 6 books. he read 1/3 of the books last week. how many books did alan read last week?

Elodia [21]

Alan read two books last week as you divide 6 by 3 which gives you an answer of two!

4 0

3 years ago

If X and Y are any random variables with E(X) = 5, E(Y) = 6, E(XY) = 21, V(X) = 9 and V(Y) = 10, then the relationship between X

natka813 [3]

Answer:

We have a strong negative relationship between the variables.

Step-by-step explanation:

Given two random variables X and Y, it is possible to calculate the covariance as Cov(X, Y) = E(XY)-E(X)E(Y). We have E(X)=5, E(Y)=6 and E(XY)=21. Therefore Cov(X,Y)=21-(5)(6)=21-30=-9. On the other hand, we know that the correlation of X and Y is the number defined by $Cov(X,Y)/\sqrt{Var(X)}\sqrt{Var(Y)}$ and because in this particular case we have V(X)=9 and V(Y)=10, we have $-9/\sqrt{9}\sqrt{10}$ = -0.9487. Therefore, we have a strong negative relationship between the variables.

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3 years ago

19. Express 9/4

DochEvi [55]

9/4

(8+1)/4

8/4 + 1/4

2 + 0,25

2,25

3 0

3 years ago

Find the measure of x in each figure.

Alex

Step-by-step explanation:

Because 2x and 40° are complementary angles.

$\therefore \: (2x) \degree + 40 \degree = 90 \degree \\ \\ \therefore \: (2x) \degree = 90 \degree - 40 \degree \\ \\ \therefore \: (2x) \degree = 50 \degree \\ \\ \therefore \: 2x = 50 \\ \\ \therefore \: x = \frac{50}{2} \\ \\ \huge \red{ \boxed{ \therefore \: x = 25}}$

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4 years ago

When the smaller of two consecutive integers is added to to two times the larger, the result is 29

KengaRu [80]

Let the numbers be X and X+1. X+2(X+1)=29 X+2X+2=29 3X=29-2 X=27/3 X=9. Thus, the Numbers are therefore 9 and 9+1=10 i.e 9 & 10. Thus, when 9 is added to (2*10=20), the result is 29.

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3 years ago