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love history [14]
4 years ago
10

What does complementary mean in math terms?

Mathematics
1 answer:
insens350 [35]4 years ago
3 0

Answer:

The complement is the amount you must add to something to make it "whole"

Step-by-step explanation:

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What is the answer for x? <br><br> X+3=5​
svlad2 [7]

Answer: X = 2

Step-by-step explanation: To find the value of "X" in this equation, we first need to subtract 3 from both sides.

Image provided.

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4 years ago
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A gym charges a $49.95 activation fee and $17.50 per month for a membership. If you spend $364.95 for how many months do you hav
olga nikolaevna [1]
18 months.

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3 years ago
An electric sale gives a reading equal to the true weight plus a random error that isnormally distributed with mean 0 and standa
Pepsi [2]

Answer:

a) 95% confidence interval estimate of the true weight is (3.026, 3.274)

b) 99% confidence interval estimate of the true weight is (2.944, 3.356)

Step-by-step explanation:

Confidence Interval can be calculated using M±ME where

  • M is the mean of five successive weightings (3.150)
  • ME is the margin of error from the mean

And margin of error (ME) can be calculated using the formula

ME=\frac{t*s}{\sqrt{N} } where

  • t is the corresponding statistic in the given confidence level and degrees of freedom(t-score)
  • s is the standard deviation of the random error (0.1)
  • N is the sample size (5)

Using the numbers 95% confidence interval estimate of the true weight is:

3.150±\frac{2.776*0.1}{\sqrt{5} }≈3.150±0.124

And 99% confidence interval estimate of the true weight is:

3.150±\frac{4.604*0.1}{\sqrt{5} }≈3.150±0.206

3 0
3 years ago
What formula can we use to find the circumference of a circle?
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Answer:

B plz mrk brainliest

Step-by-step explanation:

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Verify the identity <br> cos ( x + pi/2) = -sin x
IgorLugansk [536]
Hello 
cos ( x + pi/2) =cos(x)cos(pi/2)-sin(x) sin(pi/2) 
                       = cos(x)×0-sin(x) ×1
                    cos ( x + pi/2)   = - sin(x)
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3 years ago
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