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Citrus2011 [14]
3 years ago
9

What did I do wrong help

Mathematics
1 answer:
Savatey [412]3 years ago
7 0

Answer:

The slope of the line is -1

Step-by-step explanation:

I can help you better if you show me your work, but this is my work

2 of the coordinate points are (-4,1) and (-2,-1)

You can use Y2-y1/X2-X1

Substitute the numbers in and your answer will be -1

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The area of the trapezoid is 40 square units.
Whitepunk [10]

Answer:

5 units

Step-by-step explanation:

Image of the trapezoid is attached.

To find the height of the trapezoid (image attached), let's take the formula for area of a trapezoid.

The formula for area of a trapezoid is:

A = (\frac{a + b}{2}) h

Here, a and b represents the bases of the trapezoid.

a = 6

b = 10

h which represents height is unknown.

A = 40

Substitute figures:

40 = (\frac{6 + 10}{2}) h

40 = (\frac{16}{2}) h

40 = 8 * h

Solve for h:

h = \frac{40}{8}

h = 5

The height of the trapezoid is 5 units

4 0
3 years ago
Read 2 more answers
Please I need it for today
DaniilM [7]

Answer:

Which one?

Step-by-step explanation:

7 0
3 years ago
The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the e
Viefleur [7K]

Answer:

The 95% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level is (0.2087, 0.2507).

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}.

For this problem, we have that:

Suppose a sample of 1537 tenth graders is drawn. Of the students sampled, 1184 read above the eighth grade level. So 1537 - 1184 = 353 read at or below this level. Then

n = 1537, \pi = \frac{353}{1537} = 0.2297

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2297 - 1.96\sqrt{\frac{0.2297*0.7703}{1537}} = 0.2087

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2297 + 1.96\sqrt{\frac{0.2297*0.7703}{1537}} = 0.2507

The 95% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level is (0.2087, 0.2507).

7 0
3 years ago
Division of fractions 12/15 divided by 1/5
zimovet [89]
12/15÷1/5

when dividing fractions, all you have to do is multiply the first number by the second number's reciprocal
(reciprocal is denominator over numerator)

12/15÷1/5
12/15×5/1

remember when multiplying fractions it's the the two numerators multiplied together over the two denominators multiplied

12/15×5/1
60/15
4

The answer is 4
4 0
3 years ago
Read 2 more answers
Simplify your expression 3.7-5.3n-4n+5 can somebody help?
ArbitrLikvidat [17]

Answer:

-9.3n + 8.7

Step-by-step explanation:

5 0
3 years ago
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