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denis23 [38]
2 years ago
12

Calculate the area of the Parallelogram.I will mark as brainliest, Please help quick!

Mathematics
1 answer:
scZoUnD [109]2 years ago
3 0

Answer:

A = 42 cm²

Step-by-step explanation:

the area (A) of a parallelogram is calculated as

A = bh ( b is the base and h the perpendicular height )

here b = 6 and h = 7 , then

A = 6 × 7 = 42 cm²

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Is RS perpendicular to DF? Select Yes or No for each statement. R (6, −2), S (−1, 8), D (−1, 11), and F (11 ,4) R (1, 3), S (4,7
guajiro [1.7K]

I'll do the first one to get you started.  

Find the slope of the line between R (6,-2) and S (-1,8) to get

m = (y2-y1)/(x2-x1)

m = (8-(-2))/(-1-6)

m = (8+2)/(-1-6)

m = 10/(-7)

m = -10/7

The slope of line RS is -10/7

Next, we find the slope of line DF

m = (y2 - y1)/(x2 - x1)

m = (4-11)/(11-(-1))

m = (4-11)/(11+1)

m = -7/12

From here, we multiply the two slope values

(slope of RS)*(slope of DF) = (-10/7)*(-7/12)

(slope of RS)*(slope of DF) = (-10*(-7))/(7*12)

(slope of RS)*(slope of DF) = 10/12

(slope of RS)*(slope of DF) = 5/6

Because the result is not -1, this means we do not have perpendicular lines here. Any pair of perpendicular lines always has their slopes multiply to -1. This is assuming neither line is vertical.

I'll let you do the two other ones. Let me know what you get so I can check your work.

3 0
3 years ago
Add the following polynomials:<br> 3a3 + 8a - 6 and 4a2 - 9a + 11
liubo4ka [24]
<span> 3a^3+8a-6
+4a^2-9a+11
=3a^3+4a^2-a+5

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3 0
3 years ago
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An exam consists of 15 true-or-false questions. If a student guesses at every answer, what is the probability that he or she wil
Bas_tet [7]
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4 0
3 years ago
Suppose a city with population 600, 000 been growing at a rate of 3% per year. If this rate continues, find the population of th
Yanka [14]

Answer:

600,000(1+0.03)^20 that’s your equation. use a calculator. remove decimals from your answer because its not possible

5 0
3 years ago
One year, the population of a city was 225,000. Several years later it was 236,250. Find the percent increase.
vampirchik [111]

Based on the information given the percentage increase is 5%.

<h3>Percentage increase</h3>

Using this formula

Percentage increase=Population several years later-Population for year/Population for one year×100%

Let plug in the formula

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Percentage increase=5%

Inconclusion  the percentage increase is 5%.

Learn more about percentage increase here:brainly.com/question/11360390

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