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alexandr402 [8]
3 years ago
15

Really stumped. If someone could help me, that would be amazing

Mathematics
1 answer:
LenKa [72]3 years ago
6 0
For this, take the number inside the square and find its square root. You'll get a number. Type the answers at the bottom into a calculator to find their values and just match them up with the numbers you get from the squares.
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The equation of line CD is Y=3X -3. Write an equation of a line perpendicular to line CD in slope intercept form that contains p
OLga [1]
(I'm learning this right now!)

y = 3x - 3
If a line is perpendicular to another line, they have negative reciprocal slopes.
So you would use the slope -1/3.

Use y - y₁ = m(x - x₁) to get an equation in slope intercept form.
Plug the numbers in.

y - 1 = -1/3(x - 3)
y - 1 = -1/3x + 1
y = -1/3x + 2

An equation of a line perpendicular to line CD is y = -1/3x + 2.
8 0
3 years ago
What is the length of CD
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Answer:

20 yds.

Step-by-step explanation:

From C to E 10 yds. so if you double that you get 20 yds.

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4 years ago
What is the y-intercept of the graph of 4y -1=3?
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Answer:

(0,1)

Step-by-step explanation:

Simplify the equation to y = 1

A horizontal line always crosses the y axis.

5 0
4 years ago
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Sara collected $135 in donations for the hospital. This represents 5 percent of total collected. How much did the class collect
PIT_PIT [208]

Answer:

$2,700

Step-by-step explanation:

Find the total donation amount by dividing 135 by 0.05:

135/0.05

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5 0
3 years ago
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A Gallup Poll in July 2015 found that 26% of the 675 coffee drinkers in the sample said they were addicted to coffee. Gallup ann
emmasim [6.3K]

Answer:

The 95% confidence interval for the percent of all coffee drinkers who would say they are addicted to coffee is between 21% and 31%.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

A confidence interval has two bounds, the lower and the upper

Lower bound:

\pi - M

Upper bound:

\pi + M

In this problem, we have that:

\pi = 0.26, M = 0.05

Lower bound:

\pi - M = 0.26 - 0.05 = 0.21

Upper bound:

\pi + M = 0.26 + 0.05 = 0.31

The 95% confidence interval for the percent of all coffee drinkers who would say they are addicted to coffee is between 21% and 31%.

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3 years ago
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