Answer:
Values for x = -1 + 7i and -1 - 7i
Step-by-step explanation:
we have an equation,
(x+1)^2 = -49
We need to solve this equation for all values of x:
(x+1)^2 = - 49
Taking square root both sides
√((x +1)^2) = √-49
x + 1 = ± 7i
Subtract both sides by 1
x = -1 ± 7i
Hence we get two values for x = -1 + 7i and -1 - 7i
Answer: a = 0
Step-by-step explanation:
ok we got . Our task is to choose a value for so that "the tangent line to at passes through ."
Well , and . So our tangent line looks like this:
We know this must contain the point , so
The weight of each small tables and chairs in the United States is 15lbs and 3.5lbs respectively.
<h3>Simultaneous equation</h3>
Let
- Weight of tables = x
- Weight of chairs = y
- Cost of 3 tables and 5 chairs is 62.5lbs
- Cost of 3 tables and 2 chairs is 52lbs
3x + 5y = 62.5
3x + 2y = 52
- Subtract the equation to eliminate x
5y - 2y = 62.5 - 52
3y = 10.5
y = 10.5/3
y = 3.5 lbs
Substitute y = 3.5 into
3x + 2y = 52
3x + 2(3.5) = 52
3x + 7 = 52
3x = 52 - 7
3x = 45
x = 45/3
x = 15 lbs
Therefore, the weight of each small tables and chairs in the United States is 15lbs and 3.5lbs respectively.
Learn more about simultaneous equation:
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We need the length, the width and the height
Step-by-step explanation:
1)
2 1/10 + 3/100 = 200/100 + 10/100 + 3/100 = 213/100 =
= 2 13/100
2)
2 1/10 + 5 3/100 = 200/100 + 10/100 + 500/100 + 3/100 =
= 713/100 = 7 13/100
3)
2.1 + 00.3 = 2.4
or did you mean + 100.3 ? then is is 102.4
4)
24/100 + 7/10 = 24/100 + 70/100 = 94/100 = 47/50
5)
3 24/100 + 8 7/10 =
= 300/100 + 24/100 + 800/100 + 70/100 =
= 1194/100 = 11 94/100 = 11 47/50