3 years ago

Help please (will give brainliest)

Mathematics

2 answers:

levacccp [35]3 years ago

7 0

We know that sin(a)=80/82.
sin(a)=0.9756
sin^-1(0.9756)=a
a=77.3

klemol [59]3 years ago

3 0

I belive you would subtract 18 from 90????

You might be interested in

An airport shuttle charges 15$ plus 1.15$ per mile. An equation is written as y = mx + b, where y is the cost for x miles. (plea

fomenos

Y=15$ and x=1.15$ per mile

8 0

2 years ago

Find the reciprocal of 19/13

mariarad [96]

Answer:

13/19

Step-by-step explanation:

To find the reciprocal, flip the number.

The reciprocal of 19/13 is 13/19

7 0

2 years ago

Read 2 more answers

Find f(-3) for f(x) = 4(2)^x. ОА. 1/8 O B. -32 O C. -24 OD. 1/2

Ipatiy [6.2K]

Answer:

Step-by-step explanation:

using the rule of exponents

$a^{-m}$ = $\frac{1}{a^{m} }$

substitute x = - 3 into f(x)

f(- 3) = 4( $(2)^{-3}$ = 4 × $\frac{1}{2^{3} }$ = 4 × $\frac{1}{8}$ = $\frac{1}{2}$

5 0

1 year ago

Combine the like terms to create an equivalent expression. 4r+14−r−6

Maksim231197 [3]

Answer:

3r+8

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

2 A and B please with explanation! BIG POINTS please explain

dedylja [7]

Answer:

see explanation

Step-by-step explanation:

Using the ratio equality for circles

$\frac{arc}{C}$ = $\frac{angleatcentre}{360}$

(a)

Note the angle at the centre of the shaded arc is 360° - 90° = 270°, thus

$\frac{45}{C}$ = $\frac{270}{360}$ = $\frac{3}{4}$ ( cross- multiply )

3C = 180 ( divide both sides by 3 )

C = 60 mm

(b)

Note the angle at the centre of the shaded arc is 360° - 135° = 225°, thus

$\frac{3.3}{C}$ = $\frac{225}{360}$ ( cross- multiply )

225C = 1188 ( divide both sides by 225 )

C = 5.28 cm

8 0

2 years ago