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podryga [215]
3 years ago
5

Any one know this I’m stuck!

Mathematics
1 answer:
sammy [17]3 years ago
7 0

Answer:

i will have to say b

Step-by-step explanation:

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Millie is converting from pints to gallons. She says "1 gallon is the same as 8 pints, so 2 gallons is the same as 4 pints" is s
Pavlova-9 [17]
No, millie is not correct.
if one gallon = 8 pints, then
two gallons = 16 pints.
8 0
3 years ago
Suppose that u = < u1,u2 > and v = < v1,v2 > are vectors such that | u+v |^2 = | u |^2 + | v |^2. Prove that u and v
AveGali [126]

If u= (u1,u2,u3) andv= (v1,v2,v3), then the dot product of u and v is u·v=u1v1+u2v2+u3v3. For instance, the dot product of u=i−2j−3kandv= 2j−kisu·v= 1·0 + (−2)·2 + (−3)(−1) =−1.

Properties of the Dot Product.

Let u,v, and w be three vectors and let c be a real number. Then u·v=v·u,(u+v)·w=u·w+v·w,(cu)·v=c(u·v).

Further, u·u=|u|2.  

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Orthogonality Two vectors u and v are said to be  orthogonal(perpendicular), if the angle between them is 90◦.Theorem. Two vectors u and v are orthogonal if and only if u·v= 0.

7 0
3 years ago
The diagram below shows a student using a clinometer to measure the height of a flagpole. When the student stands 40 feet away f
AVprozaik [17]
The correct answer is the flagpole is <span>33 feet high</span>.

Explanation:
Please refer to the attached picture.

We know:
CD = 40 feet
AC = 5 feet
∠BDC = α = 35°

Using trigonometry, we know that the definition of the tangent of an angle is the ratio between the opposite side and the adjacent side, therefore:
tan α = BC / CD

Solving for BC:
BC = CD · <span>tan α
      = 40 </span>· tan (35)
      = 28 feet

In order to find the height of the flagpole, we need to add the distance of the clinometer from the ground:
AB = BC + AC
      = 28 + 5
      = 33

Hence, the flagpole is 33 feet high.

5 0
3 years ago
If G(x)=x^2+5x+6, find g(-4)-7
Paraphin [41]
G(x) = (x+2)(x+3), this is from factoring then replace x with -4 and the equation should look like this g(-4)-7= (-4+2)(-4+3)-7= -5, 
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4 years ago
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