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sweet-ann [11.9K]
3 years ago
5

What is the solution to the system of equations? 2x – y = 7 y = 2x + 3

Mathematics
1 answer:
Mars2501 [29]3 years ago
6 0
Hi:))
Additional solutions:)

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Mark rolls 2 fair dice and adds the results from each.
Natali5045456 [20]

Answer:

P ( X > 5 ) = 72,2 %

Step-by-step explanation:

The probability of success ( outcomes bigger than 5 )

If dice  1  outcome is 6 no matter wich outcome we get from dice 2 all events are successful, the we have 6 outcomes

If dice 1 outcome is 5  we also have  6 outcomes

If dice 1  outcomes is 4 we have 5 positive outcomes

If dice 1  outcome is 3  we have 4 positive outcomes

If dice 1  outcome is 2  we have 3 positive outcomes

if dice 1  outcome is 1  we have 2 positive outcomes

Total evaluating dice 1: positive outcomes 26

We will get the sames results analysing  dice 2 then we have a total of

52 successful events

And total numbers of outcomes is 36 + 36 = 72

Then

P ( X > 5 ) = 52/72  

P ( X > 5 ) = 0,722    

P ( X > 5 ) = 72,2 %

7 0
3 years ago
Kayla filled a bucket with 4 gallons of Water , she dumped exactly 1.o34 gallons . How much water is left in the buckets ?
yKpoI14uk [10]
4 - 1.034 = 2.966
There would be 2.966 gallons of water left in the bucket.

I hope this helps!
4 0
3 years ago
What is the formula for calculating the area of a circle.
Tom [10]

Answer:

A=\pi\times r^2

Step-by-step explanation:

In order to find the area of a circle we multiply π by the radius, and to find the radius of a circle we have to look at the line that stops directly in the middle of the circle.

\pi\times r


Once we then have the radius, we simply multiply the radius, (with an exponent of 2) by π and then we will have our answer. Of course, round if needed.

A=\pi\times r^2

Hope this helps.

6 0
2 years ago
Simplify: (2x – 3)2<br><br> 4x2 + 9<br><br><br> 4x2 – 12x + 9<br><br> 4x2 – 12x + 6<br><br> 4x2 – 6
Alexxandr [17]

Answer:

4x^2-12x+9

Step-by-step explanation:

we have

(2x-3)^2

we know that

(a-b)^2=a^2-2ab+b^2

In this problem

a=2x\\b=3

substitute in the formula

(2x-3)^2=(2x)^2-2(2x)(3)+(3)^2

(2x-3)^2=4x^2-12x+9

7 0
3 years ago
Read 2 more answers
NEED HELP ASAP GIVING BRAINLIST!!!!!
lbvjy [14]

Answer:

Top left: x^2 +8x +15

Top right: x^2 +3x -18

Bottom left: x^2 -3x -18

Bottom right: x^2 -10x +16

Step-by-step explanation:

6 0
3 years ago
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