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3 years ago

Which system of inequalities does the graph represent? Which test point satisfies both of the inequalities in that system?

Mathematics

1 answer:

densk [106]3 years ago

6 0

Eliminate B and C because the solid lines means there is a equal sign
between A and D, the line with the intercept of 3/2 has the area underneath shaded, so the sign should be < than, the line with the intercept of 1/2 has the area above it shaded, so the sign should be >.
A satisfies both conditions, so A is the answer

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What is f×e where e={1,2,13} and f={44,8,2}?

alexandr1967 [171]

Answer:

$f\times e=\{(1,44),(1,8),(1,2),(2,44),(2,8),(2,2),(13,44),(13,8),(13,2)\}$

Step-by-step explanation:

The Cartesian Product of two sets is all <u>pairs</u> in which the first element of each pair comes from the first set, and the second element comes from the second set.

$f\times e=\{(1,44),(1,8),(1,2),(2,44),(2,8),(2,2),(13,44),(13,8),(13,2)\}$

This was built using 1 from the first set paired with each number in the second set, then using 2 from the first set paired with each number in the second set, then 13 from the first set paired with each number in the second set.

Bad English! Good solution!

5 0

3 years ago

After comparing response times between the audio and picture portions of the MIT test, the t-test resulted in a t-value of 2.97.

Veronika [31]

Answer:

e. reject the null hypothesis the p value is less than 0.05. therefore the difference is significant.

Step-by-step explanation:

given that after comparing response times between the audio and picture portions of the MIT test, the t-test resulted in a t-value of 2.97.

test statistic t = 2.97

Sample size n =250

Critical value of t at 95% is 1.96

We find that test statistic absolute value is greater than 1.96

So p value would be less than 0.05

This implies that null hypothesis stands in the rejected region.

So reject null hypothesis would be correct conclusion. Sample size cannot be said to be small as more than 30 itself is a good sample size.

e. reject the null hypothesis the p value is less than 0.05. therefore the difference is significant.

5 0

3 years ago

Is this inequality statement true? (Y or N) <br><br> -13 < -5

Kisachek [45]

Answer:

yes

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Solving systems of equations using substitution y=7 3x-3y=-18

oksano4ka [1.4K]

Answer:

x = 1

Step-by-step explanation:

If you have any questions feel free to ask in the comments

5 0

2 years ago

A grocery store has a 13%-off sale on all bread you decide to purchase 6 loaves of bread let b be the original price of a loaf o

Sonbull [250]

Answer:

Step-by-step explanation:

A grocery store has a 13%-off sale on all bread.

Let b represent the original price of a loaf of bread.

This means that the amount by which the price of bread was reduced would be

13/100 × b = 0.13 × b = 0.13b

The new price for the loaf of bread would be

b - 0.13b

you decide to purchase 6 loaves of bread. The expression would be

6(b - 0.13b)

Expanding the expression, it becomes

6b - 0.78b

7 0

2 years ago