Answer:
x = 6
Step-by-step explanation:
to evaluate this 1/2 (4x + 16) = 20 we need to open the bracket and then cross multiply and finally evaluate for the value of x
1/2 (4x + 16) = 20
4x + 16 = 2 x 20 ............................... using cross multiplication
4x + 16 = 40
combine the like terms together
4x = 40 -16
4x = 24
divide both sides by the coefficient of x
4x/4 = 24/4
x = 6
therefore the value of x in the expression 1/2 (4x + 16) = 20 is evaluated to be equals to 6
Solve the following system using elimination:
{x - 2 y = -23 | (equation 1)
{x - y = 7 | (equation 2)
Subtract equation 1 from equation 2:
{x - 2 y = -23 | (equation 1)
{0 x+y = 30 | (equation 2)
Add 2 × (equation 2) to equation 1:
{x+0 y = 37 | (equation 1)
{0 x+y = 30 | (equation 2)
Collect results:
Answer: {x = 37 , y = 30
Answer:
Unless that is a right triangle we cannot calculate an exact answer.
The third side has to be greater than 2 (because 19 -17 = 2) and must be less than 36 (because 19 + 17 = 36)
Step-by-step explanation:
Answer:2
Step-by-step explanation:
Answer:
20 is the LCM of 5 and 20.
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