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3 years ago

Which direction would the graph of y=-|x|+9 open?

Mathematics

1 answer:

tamaranim1 [39]3 years ago

5 0

Towards the north west i.e in the positive y-axis and negative x-axis

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How does an indirect proof different from a regular proof

prisoha [69]

Answer:

Regular proof is a method of proving the statement directly. In this method, we just proved it by using direct formula or theorem. whereas, Indirect proof is a way of proving by contradiction

Step-by-step explanation:

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3 years ago

maya wants to burs 600 calories, so far, she burned 584.3 calories. how many more calories must maya burn

MrMuchimi

Answer:

15.7

Step-by-step explanation:

600 - 584.3 = 15.7

5 0

2 years ago

4. Solve the inequality.<br>

olga2289 [7]

Answer:

Step-by-step explanation:

Given

- 12 ≤ 2x - 4 < 10 ( add 4 to all 3 intervals )

- 8 ≤ 2x < 14 ( divide all 3 intervals by 2 )

- 4 ≤ x < 7

7 0

3 years ago

9/10 - 1/2 can you help

Lubov Fominskaja [6]

Answer:

4/10 or 2/5

Step-by-step explanation:

9/10-1/2 = 9/10-5/10 = 4/10 = 2/5

4 0

3 years ago

Read 2 more answers

Find the variance of this probability distribution. Round to two decimal places.

attashe74 [19]

Answer:

Variance = 4.68

Step-by-step explanation:

The formula for the variance is:

$\sigma^{2} =\frac{\Sigma(X- \mu)^{2}}{N} \\or \\ \sigma^{2} =\frac{\Sigma(X)^{2}}{N} -\mu^{2} \\$

Where:

$X: Values \\\mu: Mean \\N: Number\ of\ values$

The mean can be calculated as each value multiplied by its probability

$\mu = 0*0.4 + 1*0.3 + 2*0.1+3*0.15+ 4*0.05=1.15$

$\frac{\Sigma (X)^{2}}{N} =\frac{(0^{2}+1^{2}+2^{2}+3^{2}+4^{2})}{5} =6$

Replacing the mean and the summatory of X:

$\sigma^{2} = \frac{\Sigma(X)^{2}}{N} -\mu^{2} \\= 6 - 1.15^{2}\\= 4.6775$

4 0

4 years ago