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SVETLANKA909090 [29]
3 years ago
7

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

Mathematics
1 answer:
Fynjy0 [20]3 years ago
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)
  • A = arc cos 0.7
  • A = 45.572996

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.

r=10

(h,k)= (9,3)

(x-h)^{2}+(y-k)^{2} =r^{2}

(x-9)^{2}+(y-3)^{2} =10^{2}\\(x-9)^{2}+(y-3)^{2} =100

8 0
3 years ago
Simplify i^7/i x i^3<br><br><br> A. i^4<br> B.i^11<br> C.i^3<br> D. 1
Liula [17]

Answer:

c.i^ 3

Step-by-step explanation:

i^7/i x i^3

i ^ 7 / i ^ 4

i^ 7 - 4

i^ 3

5 0
3 years ago
Read 2 more answers
Please help! Simplify -4/3 divided by 2/-6
love history [14]

Answer:

0.1

Step-by-step explanation:

Just google the answer and it will give it to you and if it is not 0.1 then try 0.11 because there is a LOT of 1's.

3 0
4 years ago
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