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Vikki [24]
3 years ago
10

If the sun of a number is tripled, the result is nine less than twice the number. Find the number

Mathematics
1 answer:
Cloud [144]3 years ago
7 0
Attached the solution and work.

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X + 2y = 5 3x + 5y = 14 Solve the system of equations. (3, 1) (7, -1) (2, 3/2)
aniked [119]

Answer:

The solution is (3 , 1)

Step-by-step explanation:

To solve the system of the equation you can use the elimination method or substitution method.

We will use the substitution method

From the first equation x + 2y = 5⇒get  x = 5 - 2y

In the second equation 3x + 5y = 14⇒we will substitute x by 5 - 2y

3(5 - 2y) + 5y =14

15 - 6y + 5y = 14

-6y + 5y = 14 - 15

-y = -1

y = 1

Substitute the value of y in x = 5 - 2y

x = 5 - 2(1) = 5 -2 =3

∴ The solution of the system of equations is (3 , 1)

4 0
3 years ago
Read 2 more answers
Solve. x 2 −5x−8=0 x2−5x−8=0 Enter your answers, as exact values, in the boxes. x = or x =
Sidana [21]

Answer:

x2-5x-8=0  

Step-by-step explanation:

Two solutions were found :

x =(5-√57)/2=-1.275

x =(5+√57)/2= 6.275

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x2"   was replaced by   "x^2".  

Step by step solution :

Step  1  :

Trying to factor by splitting the middle term

1.1     Factoring  x2-5x-8  

The first term is,  x2  its coefficient is  1 .

The middle term is,  -5x  its coefficient is  -5 .

The last term, "the constant", is  -8  

Step-1 : Multiply the coefficient of the first term by the constant   1 • -8 = -8  

Step-2 : Find two factors of  -8  whose sum equals the coefficient of the middle term, which is   -5 .

    -8 + 1 = -7  

    -4+  2 = -2  

    -2+  4 = 2  

    -1 +   8 = 7  

5 0
3 years ago
Read 2 more answers
Is this wrong?? If so whats the answer?
mart [117]

Answer:2/12

2/12 because there is 12 answers and only 2 of them have an apple and milk. (not 100% sure but this is what I think) Please give brainliest!

4 0
2 years ago
Read 2 more answers
Please help i don't know what to do​
Alik [6]

Answer:

The answer is A .

Step-by-step explanation:

Hope it helps u , good luck ^.^

4 0
2 years ago
Use the drop-down menus to complete the statements about Euler's life after he lost his sight. After the cataract took Euler's s
Sav [38]

Answer: after the cataract took Euler’s sight he wrote more books and articles. He wrote 450 books after he lost his eye sight.

Step-by-step explanation:

Got it correct on edge.

5 0
3 years ago
Read 2 more answers
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