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Lina20 [59]
3 years ago
14

How to tell if angles are complementary s

Mathematics
1 answer:
Tomtit [17]3 years ago
8 0
Complementary triangle angles add up to 90 degrees.
It's easy to remember because the C in complementary is the C in corner, they make a perfect corner.

Supplementary triangle angles add up to 180 degrees.
It's easy to remember because the S is supplementary is the S in straight line, they make a straight line.
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Round the following numbers to the nearest 10<br> a) 83<br> b) 127<br> c) 245
dolphi86 [110]
I believe the answer is-
a) 80
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c) 250
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Michael walked 30 meters in 20 seconds how many meters does he walk per second
Kipish [7]

Answer:

1.5 m/s or 1.5 meters per second

Step-by-step explanation:

Distance/Time=Speed

30m/20s= 1.5 m/s or 1.5 meters per second

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Can someone help me again with these math work?
Evgen [1.6K]

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HELP AGAIN!!! Plzzzzz thank you!!!
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Absolute value of -1/3 is 1/3
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3 years ago
Ten young adults living in California rated the taste of a newly developed sushi pizza topped with tuna, rice, and kelp on a sca
timurjin [86]

Answer: For California: μ = 33.1; σ² = 1120.50; Range = 32;

For Iowa: μ = 24.5; σ² = 32.73; Range = 19

Step-by-step explanation:

Mean is the average of a population or a sample. It is defined as

μ = ∑x / n, where

x is each number of the set;

n is the total individuals in the sample.

Calculating the <u>Mean</u> for sample of taste of pizza in <u>California</u>:

μ₁ = \frac{34+39+40+46+33+31+34+14+15+45}{10} = 33.1

Calculating the <u>Mean</u> for the sample in Iowa:

μ₂ = \frac{28+25+35+16+25+29+24+26+17+20}{10} = 24.5

Variance measures how far the number in the set is from the mean. Its formula is

σ² = (∑x-μ)² / n -1

which means to find the variance, you have to get the difference between the number and the mean, square the result, add all of them and then divide by (n-1) individuals.

The <u>Variance</u> for the sample in <u>California</u> is

σ² = \frac{(34 - 33.1)^{2}+(39-33.1)^{2}+(40-33.1)^{2}+(46-33.1)^{2}+(33-33.1)^{2}+(34-33.1)^{2}+(14-33.1)^{2}+(15-33.1)^{2}+(45-33.1)^{2}}{9}σ² = 120.50

The <u>Variance</u> for the sample in <u>Iowa</u> is

σ² = 32.73

Range is the difference between the highest and the lowest number of the set: range = highest - lowest

For the sample in <u>California</u>, the <u>Range</u> is

range = 46 - 14 = 32

For the sample in Iowa:

range = 35 - 16 = 19

For California:

  • Mean = 33.1;
  • Variance = 120.50;
  • Range = 32;

For Iowa:

  • Mean = 24.5;
  • Variance = 32.73;
  • Range = 19;

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6 0
3 years ago
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