What is the value of x in the equation 7x 2y = 48 , when y = 3?
Answers
What is the value of x in the equation 7x + 2y = 48
Given y=3
We plug in 3 for y and solve for x
7x + 2y = 48
7x + 2(3) = 48
7x + 6 = 48 ( subtract 6 on both sides)
7x + 6 - 6 = 48 -6
7x = 42
Divide by 7 on both sides
x = 6
the value of x = 6
We can say the value of x=6 when the value of y = 3
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Six students are working to simplify the expression shown. Drag each student's answer to a box to show whether it is fully simplified, equivalent to the given expression but not fully simplified, or not equivalent to the given expression. 15 + 12x -5x +4y -7
Answers
3x is your final answer :)
(3√x)^2 or
3√(x^2)
if it is
(3√x)^2 then that equals
(3√x)(3√x)=(3)(3)(√x)(√x)=(9)(x)=9x
if it is3√(x^2) then
3 times √(x^2)=3 times x since the exponent cancels out
if
(3√x)^2 then answer is 9x
3√(x^2) then answer is 3x
B.f(x) = (x – 1)2 + 2
C.f(x) = 2(x + 1)2 + 2
D.f(x) = 2(x – 1)2 + 2
Answers
Canonical form of the function
f(x) = a* (x - p)² + q
A .f(x) = (x + 1)² + 2 ⇔ p= -1 , q = 2
B. f(x) = (x – 1)² + 2 we reject
C. f(x) = 2(x + 1)² + 2 ⇔ p = -1 , q = 2
D .f(x) = 2(x – 1)² + 2 we reject
The point (2,20) substitute
A f(x) = (x +1)² + 2
20 = (2 + 1 )² + 2
20 ≠ 9 +2
20 ≠ 11 we reject
D f(x) = 2* (x + 1)² + 2
20 = 2* (2+1)² + 2
20 = 2 * 3² + 2
20 = 2 * 9 + 2
20 = 18 + 2
Reply C
Answers
There is a number line
Start on -7 and move forward 3
-6 -5 -4
Therefore yoy are left on -4
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Answers
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Hope this helps :)