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3 years ago

Write the equation of a line that has a slope of -3 and y-intercept of 10

Mathematics

1 answer:

Helen [10]3 years ago

8 0

Answer:

y=-3x+10

Step-by-step explanation:

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Express (0.0006) in engineering notation.

Alla [95]

.6 x 10^-3 (Move the decimal in a multiple of 3 and don't forget it's 6 tenths not the whole number 6) In scientific notation this would be;
(the whole number)6 x 10^-4

4 0

3 years ago

Simplify completely:<br> 4V10 – V6 +3710<br> Show all work for full credit.

schepotkina [342]

The answer is 7√10−√6

5 0

3 years ago

Which inequality is represented by this graph? <br>

erica [24]

Answer:

x > 4

Step-by-step explanation:

Because x is greater than 4

6 0

2 years ago

A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salari

guajiro [1.7K]

Answer:

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

$F_{critical} = 1.8608$

$F = 2.9085$

The decision rule is

Reject the null hypothesis

There is sufficient evidence to support the researchers claim

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 30$

The sample variance for elementary school is $s^2_1 = 8324$

The second sample size is $n_2 = 30$

The sample variance for the secondary school is $s^2_2 = 2862$

The significance level is $\alpha = 0.05$

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

Generally from the F statistics table the critical value of $\alpha = 0.05$ at first and second degree of freedom $df_1 = n_1 - 1 = 30 - 1 = 29$ and $df_2 = n_2 - 1 = 30 - 1 = 29$ is