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2 years ago

Here is my question:

Mathematics

1 answer:

sergiy2304 [10]2 years ago

6 0

Answer:

$\frac{2}{3} - \frac{1}{2} = \frac{1}{6} \times \frac{8}{9} = \frac{4}{27}$

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At the base of a pyramid, a surveyor determines that the angle of elevation to the top is °. At a point meters from the base, th

riadik2000 [5.3K]

Answer:

$\frac{(\sin 18^\circ)}{75} = \frac{(\sin 35^\circ)}{x}$

Step-by-step explanation:

Incomplete question:

$\angle CBD = 53^\circ$

$\angle CAB = 35^\circ$

$AB = 75$

See attachment for complete question

Required

Determine the equation to find x

First, is to complete the angles of the triangle (ABC and ACB)

$\angle ABC + \angle CBD = 180$ --- angle on a straight line

$\angle ABC + 53= 180$

Collect like terms

$\angle ABC =- 53+ 180$

$\angle ABC =127^\circ$

$\angle ABC + \angle ACB + \angle CAB = 180$ --- angles in a triangle

$\angle ACB + 127 + 35 = 180$

Collect like terms

$\angle ACB =- 127 - 35 + 180$

$\angle ACB =18$

Apply sine rule

$\frac{\sin A}{a} = \frac{\sin B}{b}$

In this case:

$\frac{\sin ACB}{AB} = \frac{\sin CAB}{x}$

This gives:

$\frac{(\sin 18^\circ)}{75} = \frac{(\sin 35^\circ)}{x}$

4 0

3 years ago

Read 2 more answers

What is -2x+5>11 graphed out on a number line?

grin007 [14]

Step-by-step explanation:

-2x>11-5

x<6/-2

x<-3

Make sure the circle in the number line isnt coloured in!

5 0

3 years ago

QUICK I NEED HELP!!

natta225 [31]

7 (6) + 14!!! And this needs to be 20 characters long so I’m adding this

4 0

3 years ago

11/28+4/7 = simplest form

MatroZZZ [7]

The answer to this question is 27/28

4 0

3 years ago

the senior class has 350 students. How much is the total bill if the student government wants to buy each senior a T-shirt costi

lorasvet [3.4K]

7.20+24.75=31.95
so 31.95 per student

31.95*350=11,182.50

This will cost the student body $11,182.50

7 0

3 years ago