Can someone show me step by step on how to do this? I dont know what order to do it in:

1 answer:

5 0

1. parentheses your case you do -2/5=-0.4 then -3/4=-0.75 so it
2. exponents should look like -0.75-(-0.4)+0.4+(-0.75) next
3. multiplication/division add/subtract so it should look like -0.35+-0.35
4. addition/subtraction which equals -0.70

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Susan is on vacation at a tropical bay that has three islands. She rents a boat on Island A and plans to navigate to Island C, w

Sauron [17]

She should navigate at 45° 34' 22.7856" to go to Island C.

Given that Susan is on vacation at a tropical bay that has three islands, and she rents a boat on Island A and plans to navigate to Island C, which is 8 miles away, to determine, based on the figure below, at what angle should she navigate to go to Island C, the following calculation must be carried out, applying the cosine law:

11^2 = 8^2 + 15^2 - (2 x 8 x 15) x cos A
Cos A = (8^2 + 15^2 - 11^2) / (2x8x15)
A = arc cos (8^2 + 15^2 - 11^2) / (2x8x15)
A = arc cos (64 + 225 - 121) / 240
A = arc cos (168 / 240)
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Therefore, she should navigate at 45° 34' 22.7856" to go to Island C.

Learn more in brainly.com/question/24077856

5 0

3 years ago

I want answers for both of them pls

ohaa [14]

Answer:

Step-by-step explanation:

Start by making the percentages decimals

120%=0.12

Then do 100*0.12=12

Add 12 to 100=112

Next problem

0.4*25=10

25+10=35

Hope this helps :)

7 0

3 years ago

Write the standard form of the equation of a circle with radius 10 and center (9,3)

gladu [14]

Answer:

$(x-9)^{2}+(y-3)^{2} =100$

Step-by-step explanation:

The standard form formula for a circle equation is $(x-h)^{2}+(y-k)^{2} =r^{2}$ , where (h,k) represents the center of the circle, and r represents the radius.