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Sphinxa [80]
3 years ago
5

Please help. I’ll mark you as brainliest if correct!

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
3 0

Answer:

x, 15y

y, 3-3x

not sure....

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AFLATI 2 NUMERE STIIND CA AL DOILEA NUMAR ESTE DE 7 ORI MAI MARE DECITPRIMUL IAR SUMA DINTRE DUBLUL PRIMULUI NUMAR SI TRIPLUL CE
postnew [5]

Answer:

The numbers are 20 and 140

Step-by-step explanation:

<u><em>The question in English is</em></u>

Find 2 numbers knowing that the second number is 7 times greater than the first, and the sum between the double of the first number and the triple of the second is 460

Define the variables

Let

x ----> the first number

y ----> the second number

we know that

y=7x -----> equation A

2x+3y=460 ----> equation B

Solve the system of equations by substitution

Substitute equation A in equation B

2x+3(7x)=460

solve for x

2x+21x=460

23x=460

x=20

<em>Find the value of y</em>

y=7x  ----> y=7(20)=140

The numbers are 20 and 140

6 0
3 years ago
Solve for x -3+8×-5=-8
Art [367]

Answer:

x is 0

Step-by-step explanation:

subtract the number 3 5 and 8 then combine like terms and 8 on both sides of the equation then simplify after that divide both sides of the equation by the same term then simplify

5 0
2 years ago
F(x) = x2 + 1 g(x) = 5 – x (f – g)(x) =
Blizzard [7]

Answer:

x^2+x-4

Step-by-step explanation:

(f-g)=(x^2+1)-(5-x)

     =x^2+1-5+x

     =x^2+x-4

4 0
3 years ago
What is 25% of 40? I need the answer quickly!! First gets 5 stars and a thank you!!
eimsori [14]

Answer:

The answer is 10

I hope this helped and please mark me as brainliest!

6 0
2 years ago
Read 2 more answers
3. Simplify: 13.6 - 4.1 - 3.8 + 6.7
Art [367]

Answer:

12.4 is the answer

=13.6+6.7-4.1-3.8

=20.3-7.9

=12.4

5 0
3 years ago
Read 2 more answers
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