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2 years ago

Two boats start their journey from the same point A and travel along directions AC and AD, as shown below

Mathematics

2 answers:

adell [148]2 years ago

4 0

Answer:

Step-by-step explanation:

Paladinen [302]2 years ago

3 0

Find BD

Remember soh-cah-toa?

opposite/adjacent

tan30=400/x

xtan30=400

x = 400/tan30

Find BC

Still toa. . . still toa

90 + 60 = 150

180-150 = 30

BAC = 30

tan30=x/400

400tan30=x

BD-BC=CD

If you followed my steps, your answer should come to you.

If you didn't and are a lazy pr*ck who relies on others to do their semester exam problems for them, the answer is A. Or 461.

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Which of the following is a solution of x2 + 4x = −8?

Vladimir [108]

$x^{2}+4x = -8
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x^{2}+4x+8 = 0
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\Delta = b^{2}-4ac
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\Delta = (4)^{2}-4 \cdot (1) \cdot (8)
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\Delta = 16-32
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3 years ago

Select the correct answer

Sidana [21]

Answer:

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2 years ago

If you take of a number and add 4, you get 16. The equation represents this situation. If x represents the original number, what

babunello [35]

Answer:

x = 12

Step-by-step explanation:

equation:

x + 4 = 16

to solve for x, subttract 4 on each side:

x + 4 - 4 = 16 - 4

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2 years ago

I will give brainliest to whoever helps me with this question. Also, if you could please explain to me how you solved it I would

cluponka [151]

Answer:

12.8 feet

Step-by-step explanation:

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2 years ago

Read 2 more answers

Fran swims at a speed of 2.8 mph in still water. The Lazy River flows at a speed of 0.6 mph. How long will it take Fran to swim

kati45 [8]

Answer:

1. Upstream Time: 1 hour (or 60 minutes)

2. Downstream Time: 0.65 hour (or 39 minutes)

Step-by-step explanation:

The time it will take goes by the distance formula:

$D=RT$ , where D is the distance, R is the rate (speed), and T is the time.

For Upstream, you are going against the current, so your still water speed slows down. So upstream rate is still water rate - stream rate. So 2.8 - 0.6 = 2.2mph

Time it will take him to swim 2.2 miles, is:

$D=RT\\2.2=2.2(T)\\T=\frac{2.2}{2.2}=1$

So, 1 hour

For Downstream, you are going with the current, so your still water speed increases. So downstream rate is still water rate + stream rate. So 2.8 + 0.6 = 3.4 mph

Time it will take him to swim 2.2 miles, is:

$D=RT\\2.2=3.4(T)\\T=\frac{2.2}{3.4}=0.65$

So, 0.65 hours (or 0.65*60=39 minutes)

5 0

3 years ago