2 years ago

How to find angle of elevation

Mathematics

1 answer:

Nina [5.8K]2 years ago

3 0

The angle of elevation in this diagram is given. It's 49 degrees.

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A survey of a random sample of voters shows that 29% plan to vote for Martin and 71% plan to vote for

Iteru [2.4K]

Range=±7%

Martin=71%, Lang=29%

Range for Martin=71%±7%

So, highest %=71%+7%=78%

Lowest %=71%-7%=64%

Therefore,range for Martin is between 64%-78% which is 14%

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2 years ago

For the following problem, assume that all given angles are in simplest form, so that if A is in QIV you may assume that 270° &l

d1i1m1o1n [39]

Answer:

Step-by-step explanation:

Given that angle A is in IV quadrant

So A/2 would be in II quadrant.

sin A = -1/3

cos A = $\sqrt{1-sin^2 A} =\frac{2\sqrt{2} }{3}$

(cos A is positive since in IV quadrant)

Using this we can find cos A/2

$cosA = 2cos^2 \frac{A}{2} -1\\Or cos \frac{A}{2} =-\sqrt{\frac{1+cosA}{2} } =-\sqrt{\frac{3+2\sqrt{2} }{6} }$

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2 years ago

What is the explicit equation for this series 25,21,17,13

Neko [114]

Answer:

The explicit rule is:

Step-by-step explanation:

The explicit rule is given by:

$a_n=a_1+d(n-1)$

The given sequence is 25,21,17,13

$a_1=25$

d=21-25

d=-4

We plug in the values into the formula to get;

$a_n=25+-4(n-1)$

$a_n=25-4n+4$

$a_n=29-4n$

6 0

2 years ago

A student ticket for a high school basketball game costs $3.00. A monthly game pass costs $20.00. Which inequality represents th

Nana76 [90]

3x greater than or equal to 20
3x = 20
X= 7 games for the pass to be better
3(7)=21

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2 years ago

Read 2 more answers

Given: 3x < -9. Choose the solution set. {x | x < 3} {x | x > -1/3} {x | x < -3} {x | x > -3}

Mars2501 [29]

Divid both sides by 3
x<-3

{x | x<-3}

3rd choice

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2 years ago