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3 years ago

Plzzzz answer the two questions it asks!!!

Mathematics

1 answer:

hammer [34]3 years ago

5 0

Perimeter is 10x^2 y + 6y^3
Area is 15x^2 y^3

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An airplane flies 3,080 km from Houston to New York at a speed of 770 km/h. How long did it take the plane to travel that distan

garik1379 [7]

Answer:

time = distance/speed

3080/770 = 4

So it took 4 hours.

Step-by-step explanation:

5 0

3 years ago

If the measure of DEF is 65 what is the measure of DE. PLEASE HELP FAST

Wittaler [7]

EF is tangent to the circle we'll assume; otherwise there's no progress.

Call the center C. ECD is isosceles, formed from two radii and the chord.

Angle CED is complementary to DEF

CED = 90 - 65 = 25 degrees

CDE is congruent, isosceles triangle and all that: CDE=25

That leaves DCE=180-25-25=130 degrees

That's the measure of arc DE as well:

Answer: 130 degrees, choice A

8 0

3 years ago

Read 2 more answers

What is the correct Algebraic Inequality for the given graph?<br>plsss help

Anna71 [15]

Answer:

X < 9

The hallow circle means just greater than or less than

The numberline is pointing downwards showing that 9 is greater than x(unknown value)

The point is also on 9

6 0

3 years ago

Could someone please help me

labwork [276]

The 2nd one is D I think

8 0

4 years ago

The following are the last 7 days adjusted closing stock prices (in $) for Citigroup: 22, 25, 20, 15, 40, 55, 28 A) Compute the

son4ous [18]

Answer:

(A) The 25th percentile is 20.

(B) The mean of the data set is 20 and the median of the data set is 25. The data set is left-skewed.

Step-by-step explanation:

The data set arranged in ascending order is:

S = {15, 20, 22, 25, 28, 40, 55}

(A)

Compute the 25th percentile as follows:

$25^{th} \text{Percentile}=[\frac{n+1}{4}]^{th}obs.\\\\=[\frac{7+1}{4}]^{th}obs.\\\\=2^{nd}obs.\\\\=20$

Thus, the 25th percentile is 20. This value implies that exactly 25% of the observations are less than 20.

(B)

Compute the sample mean as follows:

$\text{Mean}=\frac{22+25+20+15+40+55+28}{7}=\frac{205}{7}=29.29$

Compute the median as follows:

For a set with odd number of observations, the median value if the middle value.

The middle value is 25.

Thus, the mean of the data set is 20 and the median of the data set is 25.

The Mean < Median.

This implies that the data set is left-skewed.

4 0

3 years ago