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ad-work [718]
3 years ago
7

13 12 20 Find the area

Mathematics
1 answer:
DerKrebs [107]3 years ago
3 0

Answer:

no clue

Step-by-step explanation:

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Help pls and ty! What is the area of this trapezoid?
Gnesinka [82]

Answer:

88 units^2

Step-by-step explanation:

The area of a trapezoid is equal to \frac{a+b}{2}h, where a and b are the top and bottom of the trapezoid and h is height.

We can see that a (top) equals 17, and b (bottom) equals 5 + 17 + 5 = 27. Then, the height of the trapezoid is 4.

  • \frac{17+27}{2} * 4
  • \frac{44}{2} * 4
  • 22 * 4
  • 88

Therefore, the answer is 88 units^2.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

6 0
2 years ago
Read 2 more answers
Using Cramer's rule to solve linear systems.
Rzqust [24]

Answer: Last Option

x=2,\ y=-5

Step-by-step explanation:

Cramer's rule says that given a system of equations of two variables x and y then:

x =\frac{Det(A_X)}{Det(A)}

y =\frac{Det(A_Y)}{Det(A)}

For this problem we know that:

Det(A) = |A|=\left|\begin{array}{ccc}4&-6\\8&-2\\\end{array}\right|

Solving we have:

|A|= 4*(-2) -(-6)*8\\\\|A|=40

Det(A_X) = |A_X|=\left|\begin{array}{ccc}38&-6\\26&-2\\\end{array}\right|

Solving we have:

|A_X|=38*(-2) - (-6)*26\\\\|A_X|=80

Det(A_Y) = |A_Y|=\left|\begin{array}{ccc}4&38\\8&26\\\end{array}\right|

Solving we have:

|A_Y|=4*(26) - (38)*8\\\\|A_Y|=-200

Finally

x =\frac{|A_X|}{|A|} = \frac{80}{40}\\\\x=2

y =\frac{|A_Y|}{|A|} = \frac{-200}{40}\\\\y=-5

4 0
2 years ago
Find the exact angular velocity in radians per hour wind W= 4.1 rpm
nataly862011 [7]

Answer:

1545.66 rad/h

Step-by-step explanation:

We need to find the angular velocity in rad/hour when wind is moving with a speed of 4.1 rpm.

We know that,

1 revolution = 2π rad

1 hour = 60 minute

So,

4.1\ rmm = 4.1\times \dfrac{2\pi }{(\dfrac{1}{60})}\ rad/h\\\\=1545.66\ rad/h

So, the required angular velocity is 1545.66 rad/h.

6 0
3 years ago
Pllllllllllllllllllllllllllllssssssssssssssssssssssssssss
cupoosta [38]

Answer:

50.24 units^2

Step-by-step explanation:

Area of circle formula: \pir^2

r = 4, \pi = 3.14

3.14 * (4^2) = 3.14 * 16 = 50.24

5 0
2 years ago
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System AAA \text{\quad}start text, end text System BBB
lisabon 2012 [21]

Answer:

replace one question with itself where the same quantity is added to both sides and yes

Step-by-step explanation:

The other answer is wrong :)

4 0
2 years ago
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