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Sidana [21]
3 years ago
11

Find the inner product for (3,1,4) * (2,8,-2) and state whether the vectors are perpendicular.

Mathematics
1 answer:
erica [24]3 years ago
4 0

Answer:

6

Not perpendicular

Step-by-step explanation:

Generally, when we have two vectors, (x1, x2, x3...xn) and (y1, y2, y3...yn) the inner product is given by x1*y1+(x2*y2)+(x3*y3).....(xnyn)

If the above sum is zero then the two vectors are perpendicular else they are not.

Given (3, 1, 4) and (2, 8, -2)

The inner product will be

(3*2)+(1*8)+(4*-2)=6+8-8=6

The inner product is 6 hence not perpendicular.

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Let's find 1/4+1/12
xxMikexx [17]

Answer:

\frac{4}{12} or \frac{1}{3}

Step-by-step explanation:

\frac{1}{4} + \frac{1}{12} = \frac{3}{12}  + \frac{1}{12} = \frac{4}{12}

5 0
2 years ago
Find the sum and product of the roots. 3x^<br> 2 - 4x - 7 = 0
victus00 [196]
Given the quadratic function, to get the roots we factorize:
3x²-4x-7=0

3x²+3x-7x-7=0
3x(x+1)-7(x+1)=0
(3x-7)(x+1)=0
thus the roots are
x=-1 or x=3/7
thus the sum of the roots will be:
-1+3/7
=-4/7
6 0
3 years ago
The height, h, in meters above the ground, of a projectile at any time, t, in seconds, after the launch is defined by the functi
Ivanshal [37]
The equation h(t) =-6t^2 + 15t + 2 <span>sets the parabola. You can find the parabola vertex as:
</span>
t_v= \frac{-b}{2a} =- \frac{15}{2\cdot (-6)} = \frac{15}{12}= \frac{5}{4}=1.25

then 

h( \frac{5}{4} )=-6\cdot  (\frac{5}{4} )^2+15\cdot \frac{5}{4} +2= \frac{91}{8} =11.375

This means that the maximum height is 11.375 m and <span>a projectilereaches this height at 1.25 seconds.</span><span /><span>
</span><span>
</span><span>The projectile initially launched at time t=0, so the initial height is h(0)=2 m</span>


6 0
4 years ago
Arithmetic or geometric 18,13,8
guapka [62]

Answer:

That is Arithmetic

Step-by-step explanation:

Arithmetic Sequence is described as a list of numbers, in which each new term differs from a preceding term by a constant quantity. Which is -5 in this case.

Hope this helps

5 0
3 years ago
Find the quotient.n^12 / n^4 =There is a picture if you need it.
Alja [10]

ANSWER:

n^8

STEP-BY-STEP EXPLANATION:

We have the following expression

n^{12}\div n^4

In this case, the exponents are subtracted since it is a division, therefore we would have:

\begin{gathered} n^{12}\div n^4=n^{12-4} \\ n^{12}\div n^4=n^8 \end{gathered}

8 0
1 year ago
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