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fredd [130]
3 years ago
10

I am a 4 digit while number. My digits decrease by 2 from the thousands place to the ones place. Each of my digits is an even nu

mber. What number am I ?
Mathematics
1 answer:
mixer [17]3 years ago
4 0

Answer:

Step-by-step explanation:

8642 or 6420

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Find the angle between 4i−6j and −i 5j. (round to the nearest tenth of a degree if necessary. ) The angle between the vectors is
GarryVolchara [31]

If the vectors are 4i-6j and -i-5j then the angle between both the vectors is approximately 45°.

Given two vectors be  4i-6j and -i-5j.

We are required to find the angle between vectors  4i-6j and -i-5j.

A vector is basically an equation involving a linear combination of vctors with possibly unkown coefficients. Vector is basically a quantity that has both magnitude and direction but not possition.

Angle is basically measure of inclination of something with the surface.

The angles between two vectors can be find out by the following formula:

cos Θ=[dot product of both the vectors/(product of magnitude of both the vectors)

cos Θ=[4*(-1)+(-6)*(-5)]/\sqrt{4^{2} +(-6)^{2} } *\sqrt{(-1)^{2} +(-5)^{2} }

cos Θ=(-4+30)/\sqrt{52}\sqrt{26}

cos Θ=26/\sqrt{1352}

cos Θ=26/26.77

cos Θ=0.7070

Θ=cos^{-1}(0.707)

Θ=45.008

Approximately 45°.

Hence if the vectors are 4i-6j and -i-5j then the angle between both the vectors is approximately 45°.

Learn more about vectors at brainly.com/question/25705666

#SPJ4

3 0
2 years ago
3X^2+3 and 4x^2-1 Enter your answer in simplest form in the boxes.
RideAnS [48]

Answer:

(12) (x^4) (2)

Hope it helps.

Step-by-step explanation:

(3x^2 + 3) (4x^2 - 1)

(3 x 4) (x^2 X x^2) (3 - 1)

(12) (x^4) (2)

4 0
3 years ago
Chicken ran up to a top speed of 9 miles per hour, find the top speed of the chicken in miles per minute. Round to the nearest 1
vladimir1956 [14]

the answer is rounded to 0.2 miles but the answer is 0.15 because you divide the number 9 by minutes in an hour and you get 0.15 (rounded up to 0.2)

8 0
3 years ago
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What is the slope-intercept equation for the line below?
nordsb [41]
D 5/4 x - 4
You find the slope using the slope formula, 1-(-4)/4-0 which should give you 5/4 and then you substitute 5/4 into the equation y=mx+c . y=5/4x+ c. You take the x and y values of any of the two points and substitute them into this equation to solve for c which should give you -4.The equation of the line is 5/4x -4.Hope this helps!
6 0
3 years ago
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How do I divide 20 by 0.5?
Ostrovityanka [42]
Whenever you divide by 0.5 just double the number for the answer. Double 20 is 40. 40 is the answer.
5 0
3 years ago
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