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ra1l [238]
3 years ago
5

Stacie has seven more cats than Steve. Write an expression that illustrates how many cats Stacie has. Use x to represent how man

y cats Steve has
Mathematics
2 answers:
Juli2301 [7.4K]3 years ago
5 0

Answer:

7+x

Step-by-step explanation:

Romashka [77]3 years ago
3 0

let x represent the number of cats of Steve.

Statcie's cat

= 7 + x

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Find the quotient................................
Wittaler [7]

Answer:

A


Step-by-step explanation:


To find this quotient, we divide each term inside the parenthesis by 2a. Then we simplify. So we have:

\frac{4a^4}{2a}+\frac{6a^3}{2a}-\frac{10a^2}{2a}\\=2a^{4-1}+3a^{3-1}-5a^{2-1}\\=2a^3+3a^2-5a


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6 0
4 years ago
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A simple random sample of items resulted in a sample mean of . The population standard deviation is . a. Compute the confidence
damaskus [11]

Answer:

Following are the solution to this question

Step-by-step explanation:

Please find the complete question in the attached file.

In point a:

a=0.05 \\\\| Z(0.025)|= 1.96  \text{(check in normal table)} \\\\ 95 \% \  CI \\\\\bar x  \pm  \ Z \times \frac{s}{\sqrt{n}}\\\\\to 80 \pm  1.96 \times \frac{15}{\sqrt{60}} \\\\\to (76.20448, 83.79552)

In point b:

95 \%  \ CI \ is \\\\ \bar x  \pm  Z \times \frac{s}{\sqrt{n}}\\\\\to  80 \pm 1.96 \times \frac {15}{\sqrt{120}}\\\\\to (77.31616,  82.68384)

In point c:

A large sample is a smaller error margin.

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3 years ago
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