Unsecured, but this is in the wrong section.
Answer:
The numbers are 20 and - 13
Step-by-step explanation:
Given as ;
The sum of two numbers = 7
Two times a number and three times another number = 13
So ,Let The first number = x
and The second number = y
According to question
x + y = 7 and ...A
2 × x + 3 × y = 1 ....B
Multiply eq A by 2
I.e 2 × ( x + y ) = 2 × 7
Or, 2 × x + 2 × y = 14
Now solve the both equation
( 2 × x + 3 × y ) - ( 2 × x + 2 × y ) = 1 - 14
Or. ( 2 x - 2 x ) + ( 3 y - 2 y ) = - 13
Or, 0 + y = - 13
∴ y = - 13
Put The value of y in eq A
x + y = 7
Or , x = 7 - y
Or, x = 7 - ( - 13 )
so, x = 7 + 13
∴ x =20
Hence The numbers are 20 and - 13 Answer
Answer: (A) 2(x + 4)
Step-by-step explanation: We know that the measure of one side of the square is (x + 4). But, we first will need to find the total area and perimeter of the square in order to find the difference between them.
The area is length x width, so multiply 2(x + 4) Since all the sides are the same.
2(x + 4) = 2x + 8. The area is 2x + 8.
To find the perimeter simply add x + 4, four times. 4(x + 4).
4(x + 4) = 4x + 16 as the total perimeter of the square.
Now subtract the area from the perimeter.
4x + 16 - (2x + 8) --Distribute negative sign.
4x + 16 - 2x - 8 --Combine like terms
4x - 2x + 16 - 8
2x + 8.
2(x + 4) is equivalent to 2x + 8 and is therefore the answer.
We are given the equation 3k+5=17 and we need to solve for k.
3k+5 = 17
Substract 5 from each side:
3k+5-5=17-5
3k=12
Now divide each side by 3 so we can have the variable k on a side and its value on the next side:
(3k)/3 = 12/3
k = 4
So for 3k+5=17 we have k=4
Hope this helps! :)
Real number, rational number, and integer