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2 years ago

Which are equivalent to each other 6a-4a+2, 2+5a+5a and 9a+a+2 WHO EVER ANSWERS I WILL MARK BRAINLIEST

Mathematics

1 answer:

Tanya [424]2 years ago

6 0

Answer:

2+5a+5a and 9a+a+2

Step-by-step explanation:

It is the answer as

6a-4a+2= 2a+2

2+5a+5a= 10a+2

& 9a+a+2= 10a+2

PLEASE MARK ME AS BRAINLIEST!!!

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3 years ago

Urgent. There are 12 coloured counters in a bag. The counters are black, white or grey A counter is chosen at random. The probab

Nastasia [14]

Answer:

1/12

Step-by-step explanation:

Needed information

$\sf Probability\:of\:an\:event\:occurring = \dfrac{Number\:of\:ways\:it\:can\:occur}{Total\:number\:of\:possible\:outcomes}$

The sum of the probabilities of all outcomes must equal 1

Solution

We are told that the probability that the counter is not black is 3/4.

As the sum of the probabilities of all outcomes must equal 1, we can work out the probability that the counter is black by subtracting 3/4 from 1:

$\sf P(counter\:not\:black)=\dfrac34$

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We are told that the probability that the counter is not white is 2/3.

As the sum of the probabilities of all outcomes must equal 1, we can work out the probability that the counter is white by subtracting 2/3 from 1:

$\sf P(counter\:not\:white)=\dfrac23$

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We are told that there are black, white and grey counters in the bag. We also know that the sum of the probabilities of all outcomes must equal 1. Therefore, we can work out the probability the counter is grey by subtracting the probability the counter is black and the probability the counter is white from 1:

$\begin{aligned}\sf P(counter\:grey) & = \sf1-P(counter\:black)-P(counter\:white)\\\\ & =\sf 1-\dfrac14-\dfrac13\\\\ & = \sf \dfrac{12}{12}-\dfrac{3}{12}-\dfrac{4}{12}\\\\ & = \sf \dfrac{12-3-4}{12}\\\\ & = \sf \dfrac{5}{12}\end{aligned}$

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2 years ago

18. What is the y-intercept of the line that passes through the points (1, 1) and (5, 13)?

TEA [102]

Answer:

-2

(The coordinate point is (0,-2))

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First, make an equation of the line.

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So the answer is -2.

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