Answer:
x = 3
x + 3 = 6
√45
Step-by-step explanation:
the general theorem is
a^2 + b^2 = c^2
Givens
a = x
b = x + 3
c = √45
Solution
x^2 + (x + 3)^2 = (√45)^2 Substitute
x^2 + x^2 + 6x + 9 = 45 Expand the brackets. Square √45
2x^2 + 6x + 9 = 45 Subtract 45 from both sides
2x^2 + 6x - 36 = 0 Divide by 2
x^2 + 3x - 18 = 0 Factor
(x + 6)(x - 3) = 0 x+ 6 has no meaning in the real world.
x - 3 = 0
x = 3
Answer
a) 3
b) 6
c) √45
Answer:
28a
Step-by-step explanation:
add the 13 and the 15 but make sure you put the a back on the end
Length of rectangle is 10.5 cm if width = 4 cm and area is 42 cm^2
Step-by-step explanation:
If length = 6 and width = 7 cm the area is 42 cm^2
We need to find length of rectangle if width = 4 cm and area is 42 cm^2
The formula used to find area of rectangle is:
Putting values and finding length:
Divide both sides by 4
So, length of rectangle is 10.5 cm if width = 4 cm and area is 42 cm^2
Keywords: Area of rectangle
Learn more about area of rectangle at:
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<u>Step-by-step explanation:</u>
Set Equation 1 equal to Equation 2 and substitute z per Equation 3
Solve for y when x = 0:
Notice that x + y is in the denominator and denominator cannot equal zero so x = 0 is an invalid solution.
Answer:
try multiplying 3x7 would be 21
Step-by-step explanation: