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3 years ago

11

Y=6 x=5 xy+7-yplease help mee

1 answer:

Afina-wow [57]3 years ago

4 0

5•6+7-6
30+7-6
37-6
=31

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Crazy boy [7]

Answer:

x < 7

Step-by-step explanation:

7x < 49 (Given)

x < 7 (Divided 7 on both sides)

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2 years ago

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For every integer k from 1 to 10, inclusive the kth term of a certain sequence is given by [(−1)^(k+1)]∗[1/2^(k)].

jarptica [38.1K]

For every integer k from 1 to 10, inclusive the kth term of a certain sequence is given by [(−1)^(k+1)]∗[1/2^(k)].
If T is the sum of the first 10 terms in the sequence, then T is:

B.

A. Greater than 2
B. Between 1 and 2
C. Between 1/2 and 1
D. Between 1/4 and 1/2
E. Less than 1/4

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3 years ago

The number of DVDs in a random person’s home collection is counted for a sample population of 80 people. The mean of the sample

VLD [36.1K]

Answer:

$E = 3.46\ movies$

Step-by-step explanation:

The formula to find the error is:

$E = z_{\frac{\alpha}{2}}\frac{\sigma}{\sqrt{n}}$

Where:

$\sigma$ is the standard deviation

n is the sample size

So

n = 80 people

$\sigma$ = 12 movies

Then

$1- \alpha$ = confidence level = 0.99

$\alpha= 1-0.99$

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We look for the Z value: $Z_{0.005}$

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Therefore:

$E =2.58*\frac{12}{\sqrt{80}}\\\\E = 3.46\ movies$

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3 years ago

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Vesnalui [34]

Answer:

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9 9/14

Step-by-step explanation:

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2 years ago

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user100 [1]

Answer:

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3 years ago

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