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3 years ago

10

PLEASE HELP 10 POINTS!

2 answers:

valentina_108 [34]3 years ago

6 0

Answer: Point C :&382&:$

Veronika [31]3 years ago

3 0

Answer:

point c is right answer

Step-by-step explanation:

you can also count after -7 d is at -5 the number and then c is located between -7 and -8 so its -7.75

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A boat is heading towards a lighthouse, whose beacon-light is 113 feet above the water. From point AA, the boat’s crew measures

Blababa [14]

The distance between points A and B and the boat is an illustration of elevation and distance

The distance from point A to point B is 346 feet

<h3>How to calculate the distance AB</h3>

The height of the lighthouse is given as:

h = 113

The distance between point A and the base of the lighthouse is calculated using the following tangent ratio

$\tan(10) = \frac{113}{A}$

Make A, the subject

$A = \frac{113}{\tan(10)}$

$A = 640.85$

The distance between point B and the base of the lighthouse is calculated using the following tangent ratio

$\tan(21) = \frac{113}{B}$

Make B, the subject

$B= \frac{113}{\tan(21)}$

$B= 294.38$

The distance AB, is then calculated as:

$AB = A - B$

$AB = 640.85 - 294.38$

$AB = 346.47$

Approximate

$AB = 346$

Hence, the distance from point A to point B is 346 feet

Read more about elevation and distance at:

brainly.com/question/7243416

3 0

2 years ago

Let p0, p1, and p2 be the orthogonal polynomials described below, where the inner product on P4 is given by evaluation at -2, -1

Mamont248 [21]

Answer:

$\frac{51}{5}t$

Step-by-step explanation:

Let W = $(p_0, p_1, p_2)$ be orthogonal polynomials which is equal to $(4, 3t, t^2 -2)$ , which defines the inner products as

$(f,g)=f(-2)g(-2)+f(-1)g(-1)+f(0)g(0)+f(1)g(1)+f(2)g(2)$

Now, we find the orthogonal projection of $p=3t^3$ on W.

So the projection is

$Proj_W p = \frac{(p_0,p)}{(p_0,p_0)}p_0+\frac{(p_1,p)}{(p_1,p_1)}p_1+\frac{(p_2,p)}{(p_2,p_2)}p_2$

$(p_0,p)=p_0(-2)p(-2)+p_0(-1)p(-1)+p_0(0)p(0)+p_0(1)p(1)+p_0(2)p(2)$

$=4(-24)+4(-3)+4(0)+4(3)+4(24)=0$

$(p_0,p_0)=p_0(-2)p_0(-2)+p_0(-1)p_0(-1)+p_0(0)p_0(0)+p_0(1)p_0(1)+p_0(2)p_0(2)$

$=4(4)+4(4)+4(4)+4(4)+4(4)=80$

$(p_1,p)=p_1(-2)p(-2)+p_1(-1)p(-1)+p_1(0)p(0)+p_1(1)p(1)+p_1(2)p(2)$

$=(-6)(-24)+(-3)(-3)+0(0)+3(3)+6(24)=306$

$(p_1,p_1)=p_1(-2)p_1(-2)+p_1(-1)p_1(-1)+p_1(0)p_1(0)+p_1(1)p_1(1)+p_1(2)p_1(2)$

$=(-6)(-6)+(-3)(-3)+0(0)+3(3)+6(6)=90$

$(p_2,p)=p_2(-2)p(-2)+p_2(-1)p(-1)+p_2(0)p(0)+p_2(1)p(1)+p_2(2)p(2)$

$=2(-24)+(-1)(-3)+(-2)(0)+(-1)(3)+2(24)=0$

$(p_2,p_2)=p_2(-2)p_2(-2)+p_2(-1)p_2(-1)+p_2(0)p_2(0)+p_2(1)p_2(1)+p_2(2)p_2(2)$

$=(2)(2)+(-1)(-1)+(-2)(-2)+(-1)(-1)+2(2)=14$

Therefore,

$Proj_W p = \frac{(p_0,p)}{(p_0,p_0)}p_0+\frac{(p_1,p)}{(p_1,p_1)}p_1+\frac{(p_2,p)}{(p_2,p_2)}p_2$

$=\frac{0}{80}(4)+\frac{306}{90}(3t)+\frac{0}{14}(t^2-2)$

$=\frac{51}{5}t$

6 0

3 years ago

Which expression is equivalent to the given expression? 5x−2

kompoz [17]

The second one is same !

as 2x-2+3x= 5x-2 .....so answer is B

8 0

3 years ago

Read 2 more answers

Will give 15 points !!! Help me please

kotykmax [81]

Answer:

the answer is b.

a little tip is if your between to answers and for exanple a and b pick b because d and b are more used for answers than a and c.

Step-by-step explanation:

3 0

3 years ago

Can you please help I will reward more than 6 points and thanks!

sdas [7]

The answers are A and C because you need to be able to convert simple decimals like those

7 0

3 years ago