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2 years ago

50 Points For All these Answers

Mathematics

2 answers:

Blizzard [7]2 years ago

8 0

Answer:

1.B

2.D

3.C

Step-by-step explanation:

NARA [144]2 years ago

8 0

Step-by-step explanation:

please mark me as brainlest

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Choose the graph that represents the equation y=x-2

amid [387]

Step-by-step explanation:

The choices are not given but the graph looks like the above picture.

8 0

2 years ago

Read 2 more answers

At noon, ship A is 130 km west of ship B. Ship A is sailing east at 25 km/h and ship B is sailing north at 20 km/h. How fast is

Hitman42 [59]

Answer:

answer = 12.87 km/h

Step-by-step explanation:

Given

Ship A is sailing east at 25 km/h = $\frac{dx}{dt}$

ship B is sailing north at 20 km/h = $\frac{dy}{dt}$

here x and y are the sailing at t = 4 : 00 pm for ship A and B respectively

so we get x = 4 ×25 =100 km/h

y = 4× 20 = 80 km/h

let z is the distance between the ships, we need to find $\frac{dz}{dt}$ at t = 4 hr

At noon, ship A is 130 km west of ship B (12:00 pm)

so equation will be

$z^2 = (130-x)^2 + y^2......................(i)\\put x = 100 and y = 80 \\\\we | | get \\$

$z^2 = 30^2 + 80^2\\z =\sqrt{7300} km/h$

derivative first equation w . r. to t we get

$2z\frac{dz}{dt} =$ $-2(130-x)\frac{dx}{dt}$ $+2y\frac{dy}{dt}$

$\frac{dz}{dt} =\frac{1}{z}[(x -130)\frac{dx}{dt} +y\frac{dy}{dt}]$

$\frac{dz}{dt} = \frac{( -20\times25 + 80\times20)}{\sqrt{7300} }$

$= \frac{1100}{85.44}\\ = 12.87km/h$

8 0

3 years ago

Hellpppppppppp pleaseee

Nina [5.8K]

B and c

give me brainliest plsss

4 0

3 years ago

How much fabric is needed to create the lateral faces of the tent?

jek_recluse [69]

Left and right side: 6.4*7=44.8
44.8+44.8=89.6
front (where the zipper is) and back: half of 5*8=20
20+20=40

40+89.6=129.6

the area of the bottom is 7*8=56

the total area is 129.6+56=185.6

I am not sure what lateral area includes. To me, the answer should be 129.6, but 129.6 is not a choice.
I'd suggest 185.6, the total surface area.

7 0

3 years ago

Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.028; confi

TiliK225 [7]

The answer I think it’s number b

3 0

3 years ago