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Dafna11 [192]
1 year ago
13

Please please help !!!!!!!!

Mathematics
1 answer:
adoni [48]1 year ago
8 0

Answer:

98°

142°

83°

97°

Step-by-step explanation:

m(arc)JL = 2 × 49° = 98°

m(arc)MJ = 360° - 120° - 98° = 142°

m<KJM = (120° + 46°)/2 = 83°

m<KLM = (360° - 120° - 46°)/2 = 97°

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Help please match with the words
12345 [234]

Answer:

Perpendicular

Skew

Parallel

Step-by-step explanation:

First one : the lines intersect and they form right angles

The second one : they don't intersect and appear on separate planes

The last : they are both sides of a rectangle on the same plane

8 0
3 years ago
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When evaluating (6.28x10^12)/(3.14x10^4) what will be the exponent of 10 in the quotient?
alexdok [17]
2*10^8
the exponent would be 8
hope this helps!
4 0
3 years ago
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Which of these answers best describes the core?
lesya [120]
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3 years ago
Find the angle between u = (8.- 3) and v = (-3,- 8) Round to the nearest tenth of a degree.
Nimfa-mama [501]

Answer:

<h2>90°</h2>

Step-by-step explanation:

First you must calculate the module or the magnitude of both vectors

The module of u is:

|u|=\sqrt{(8)^2 + (-3)^2} \\\\|u|=\sqrt{64 + 9}\\\\|u|=8.544

The module of v is:

|v|=\sqrt{(-3)^2 + (-8)^2} \\\\|u|=\sqrt{9 + 64}\\\\|u|=8.544

Now we calculate the scalar product between both vectors

u*v = 8*(-3) + (-3)*(-8)\\\\u*v = -24+ 24=0

Finally we know that the scalar product of two vectors is equal to:

u*v = |u||v|*cos(\theta)

Where \theta is the angle between the vectors u and v. Now we solve the equation for \theta

0 = 8.544*8.544*cos(\theta)\\\\0 = cos(\theta)\\\\\theta= arcos(0)\\\\\theta=90\°

the answer is 90°

Whenever the scalar product of two vectors is equals to zero it means that the angle between them is 90 °

5 0
3 years ago
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You give up a full-time salary of $45,000 a year to go to school for 2 years. The total cost of going to school is $30,000. If y
Sloan [31]
I say that answer would be C:

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TOTAL cost of school = 30K 

sum of investment 
(90K+30K) = 120K 

5 years to recover investment 
(120K/5yrs) = 24K per year 

Salary plus amount required to recover investment 
<span>(24K+45K) = 69K


I hope my answer has come to your help. God bless and have a nice day ahead!</span>
5 0
3 years ago
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