3 years ago

Evaluate the expression. -3 + (-2)

Mathematics

1 answer:

mart [117]3 years ago

6 0

That's answer exactly is -5

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On September 16, 2011, the New York Times reported that the American public's approval rating of Congress had sunk to an all-tim

777dan777 [17]

Answer:

The sample size is $n = 451$

Step-by-step explanation:

From the question we are told that

The margin of error is E = 0.03

The sample proportion is $\^ p = 0.12$

From the question we are told the confidence level is 95% , hence the level of significance is

$\alpha = (100 - 95 ) \%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the sample size is mathematically represented as

$n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )$

=> $n = [\frac{1.96}{0.03} ]^2 *0.12 (1 - 0.12 )$

=> $n = 451$

3 0

3 years ago

Edgar is getting better at math. On his first quiz he scored 57 points, then he scores 61 and 65 on his next two quizzes. If his

mario62 [17]

Answer:

His score is increasing by four each time, so on his 9th quiz, his score will be 89

hope that helps!

Step-by-step explanation:

4 0

4 years ago

Find the surface area of a tissue box that is 6 inches wide, 10 inches long, and 5 inches tall

MissTica

Answer:

140

Step-by-step explanation:

SA=lw+lh+hw

6*10=60

10*5=50

5*6=30

60+50+30=140

6 0

3 years ago

A. 33 <br> B. 11<br> C. 22<br> D. 66

noname [10]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What is a 5% increase from $79?

amid [387]

We can use the rule of three to figure out what's 5% of 79:

100/79=5/x

x= (79*5/100)=3.95
Let's add said 5% to 79:
79+3.95=82.95

5 0

3 years ago