Combine like terms: 2y^2 + 2(4y^2 − 3)

Mathematics

1 answer:

nadya68 [22]3 years ago

8 0

Answer:

10y^2-6

Step-by-step explanation:

2y^2=2(4y^2-3)

2x4y^2=8y^2

2x(-3)=(-6)

2y^2+8y^2-6

10y^2-6

You might be interested in

What is the first step in simplifying

seraphim [82]

Distribute the negative b and negative one to he terms in the parentheses
In an expression, if there area brackets, you always have to expand THEN solve it

7 0

3 years ago

A basketball player makes 70% of his free throws the random numbers below represent 20 trials for a simulation let the numbers 0

Nesterboy [21]

Answer:

40%

Step-by-step explanation:

Given the result of the simulation below:

(5,5) (0,6) (9,6) (7,4) (9,1) (7,3) (0,4) (9,3) (2,9) (1,4)

(6,8) (5,3) (1,7) (1,7) (1,8) (3,5) (7,2) (2,1) (0,6) (1,8)

n(S)=20

The numbers 0 to 6 represent a made free throw .
The numbers 7 to 9 represent a missed free throw.
Therefore, any result containing 7 to 9 does not satisfy our requirement that the player makes both throws.

Let Event A be the event that the player made both throws

The pairs in which the player made both throws are:

(5,5) (0,6) (0,4) (1,4) (5,3) (3,5) (2,1) (0,6)

n(A)=8

Therefore:

$P(A)=\frac{n(A)}{n(S)}=\frac{8}{20}=0.4\\$