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Vinvika [58]
3 years ago
11

What’s the opposite of -1.1?

Mathematics
2 answers:
MrRissso [65]3 years ago
8 0

Answer:

thw opposite of -1.1 is 1.1

frozen [14]3 years ago
3 0

Answer:

+1.1

Step-by-step explanation:

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Two sides of a triangle measure 9 cm and 23 cm what could be the measurement of the third side of the triangle
Vladimir79 [104]
Pythagorean Theorem: a^2+b^2=c^2
(9)^2 + b^2 = (23)^2
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If 9 times a number is added to 18, the result is -27.<br> Find the number.
denis23 [38]

Answer:

-5

Step-by-step explanation:

9x +18=-27

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3 years ago
Which statement is true about the equations –3x + 4y = 12 and x – y = 1?
Anastaziya [24]

The answer is the 4th choice

4 0
3 years ago
A physician wants to develop criteria for determining whether a patient's pulse rate is atypical, and she wants to determine whe
valkas [14]

Answer:

a) 66.1 < μ < 82.7

b) 71.9 < μ < 97.7

c) D. No, because the two confidence intervals overlap, we cannot conclude that the two population means are different.

Step-by-step explanation:

Confidence interval is given by the formula

M±t×(\frac{s}{\sqrt{N} }) where

  • M is the sample mean
  • t is the corresponding t value for 95 confidence level
  • s is the sample standard deviation
  • N is the sample size

<u>a. Construct a 95% confidence interval estimate of the mean pulse rate for males.</u>

For men:

M=74.4 t=2.262 s=11.6207 N=10 then confidence interval is:

74.4±2.262×(\frac{11.6207}{\sqrt{10 } }) ≈ 74.4±8.3

<u>b. Construct a 95% confidence interval estimate of the mean pulse rate for females.</u>

For women:

M=84.8 t=2.262 s=18.0488 N=10 then confidence interval is:

84.8±2.262×(\frac{18.0488 }{\sqrt{10 } }) ≈ 84.8±12.9

<u>c. Compare the preceding results. Can we conclude that the population means for males and females are different?</u>

Difference of Population means for males and females are not statistically significant, since confidence intervals overlap.

<u />

4 0
3 years ago
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