3 years ago

A number x increased by 9 is less than -30.

Mathematics

1 answer:

tatyana61 [14]3 years ago

8 0

Answer:

x + 9 - (-30)

Step-by-step explanation:

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____ [38]

the sum of the expanded angle is 180⇒

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4 years ago

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For a sample of n = 30 scores, X = 45 corresponds to z = 1.50 and X = 40 corresponds to z = +1.00. What are the values for the s

Ber [7]

Answer:

Sample mean = 30

Standard deviation = 10

Step-by-step explanation:

A system with two linear equations can be modeled with the information given in order to find the sample mean (M) and the standard deviation (s):

$z=\frac{X-M}{s}\\\\1.50=\frac{45-M}{s} \\1.00=\frac{40-M}{s}$

Solving the linear system:

$40-M = \frac{45-M}{1.5}\\M=\frac{15}{0.5}\\M=30\\\\s=\frac{45-30}{1.5}\\s=10$

The sample mean is 30 while the standard deviation is 10.

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4 years ago

What is the best estimate for 5.07 x 0.81 ?

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Answer:

I'mma be honest someone else asked the same question and this is the answer they gotten They gotten 4 and 5 and 4.1 but in my opinion I say the answer should be 4

Step-by-step explanation:

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Vesnalui [34]

I looked it up and wrote the 14=5:2 in and this is what it said

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3 years ago

Which of the following is a solution set to the equation x^2-10x+16=0

almond37 [142]

Answer:

x=2. or. x=8

Step-by-step explanation:

x^2-10x+16=0. s=-10

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