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morpeh [17]
3 years ago
13

Maths I’ll give the brainiest

Mathematics
1 answer:
Helga [31]3 years ago
4 0

Answer:

x= 4/5

y= 2/5

Step-by-step explanation:

3x-y=2

2x+y=5

solve them so that they are in y=mx+b form

3x-y-3x=2-3x

-y= -3x+2

y= 3x -2

2x+y -2x= 2-2x

y= -2x+2

now use the substitution method to get your points

3x -2= -2x+2

3x -2+2= -2x+2+2

3x= -2x+4

3x+2x= -2x+4+2x

5x=4

x= 4/5

now substitute x into any of the 2 equations

y= 3x -2

y= 3(4/5) -2

y= 2 2/5 -2

y= 2/5

Hope this helped!

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Dec 23, 8:45:08 PM
Gemiola [76]

Answer:

3, 5, 7

Step-by-step explanation:

Let the first of the three positive consecutive odd numbers be x.

Now, the second odd number = x+2\\

And, the third odd number = x+4

As per question statement, the multiplication of the first and third odd number is 9 lesser than the 6 times the second integer.

Writing the equation, we get:

x(x+4) = 6(x+2)-9\\\Rightarrow x^{2} +4x=6x+12-9\\\Rightarrow x^{2} +4x-6x = 3\\\Rightarrow x^{2} -2x - 3=0\\\text{Solving the above equation by factorization method:}\\\Rightarrow x^{2} -3x +x - 3=0\\\Rightarrow x(x -3) + 1(x - 3)=0\\\Rightarrow (x -3) (x+ 1)=0\\\Rightarrow x =3, -1

As, we got a quadratic equation, so we have two solutions here.

One is positive integer and other one is negative.

So, solution is x=3

First number is 3.

Second number is 3 + 2 = 5

Third number is 5 + 2 = 7

3 0
3 years ago
Chloe drive from her house to grandmas house 48 miles away in an hour and 12 minutes how far could you travel nine minutes
Stels [109]

Answer:

The Answer is 36 miles in nine minutes

6 0
4 years ago
The results from the last quiz that Mr. Tham gave his class are 10, 15, 25, 75, 75, 77, 80, 83, 85, and 90. Which statistical me
Anika [276]
Using average makes these scores seem overall low: because it you add them up and divide them by the quantity you get 61.5 as the average which is low for a quiz grade
7 0
4 years ago
Read 2 more answers
A cereal box is 6.2 inches high, 8 inches long, and 2.5 inches wide. What is the volume
Gwar [14]

Answer:

124

Step-by-step explanation:

v = l×w×h

v = 6.2 × 8 × 2.5

v = 124

4 0
3 years ago
Super ez im just slow plz help<br> -3x+15-6x=30+32x
strojnjashka [21]

Answer:

-15/41

Step-by-step explanation:

-3x + 15 - 6x = 30 + 32x

~Combine like terms

-9x + 15 = 30 + 32x

~Subtract 15 to both sides

-9x = 15 + 32x

~Subtract 32x to both sides

-41x = 15

~Divide -41 to both sides

x = -15/41

Best of Luck!

7 0
3 years ago
Read 2 more answers
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