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solong [7]
3 years ago
15

(35 points) answer 5 and 7 only please

Mathematics
1 answer:
tatyana61 [14]3 years ago
3 0
A2+b2=c2 and get your answer

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Find the equation of the plane with the given description. contains the lines r1(t) = 2, 1, 0 + t, 2t, 4t and r2(t) = 2, 1, 0 +
Genrish500 [490]
The intersection point of the two lines is (2,1,0).
The respective direction vectors are
L1: <1,2,4>
L2: <4,1,15> 
Since the normal vector of the required plane is perpendicular to both direction vectors, the normal vector of the plane is obtained by the cross product of L1 and L2.
i  j    k
1 2  4
4 1 15
=<30-4, 16-15, 1-8>
=<26, 1, -7>

We know that the plane must pass through (2,1,0), the equation of the plane is

26(x-2)+1(y-1)-7(z-0)=0
simplifying,
26x+y-7z=52+1+0=53
or
26x+y-7z=53

Check:
Put points on L1 in the plane
26(t+2)+(2t+1)-7(4t+0)=53   ok
For L2,
26(4t+2)+(t+1)-7(15t+0)=53  ok
8 0
3 years ago
Layla calculates the mean of the ages of 10 students on her bus, and she discovers the average(mean) age is 12.8. What will happ
Leni [432]

Answer:

The mean will increase

Step-by-step explanation:

6 0
2 years ago
Kiran wrote the expression x-10 for this number puzzle: "Pick a number, add -2, and multiply by 5."
ioda

Answer:

If you pick the number 2, you will get (2) - 10 = 8

But the way he said it, it would be:  (2) - 2 * 5 = 0

The correct way would be to write the expression:  (x - 3) * 5

7 0
3 years ago
Need help.  arrange the polynomial in descending order,  x5+x+2x³+6+2x²= ______
kirill [66]
X⁵+ x +2x³ + 6+ 2x²     =        x⁵ + 2x³ +2x² + x + 6
5 0
3 years ago
Read 2 more answers
What is the unit distance, Rounded to the nearest hundredth, between the points (-5, 2) and (3, 7)?
Lostsunrise [7]

Answer:

Distance=9.43 units

Step-by-step explanation:

When you have two coordinates and you need to find the distance between them, you can use the distance formula.

D=sqrt(7-2)^2+(3-(-5))^2

D=sqrt(5^2+8^2)

D=sqrt(25+64)

D=sqrt89

D=9.43, rounded to the nearest hundredth.

Therefore, your distance would be 9.43 units.

I hope this helped! Have a good rest of your day~

3 0
3 years ago
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