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2 years ago

Help me pls ill give extra points

Mathematics

2 answers:

Sonja [21]2 years ago

6 0

It’s true
Hope you have a great day

OLga [1]2 years ago

5 0

Answer:

false

Step-by-step explanation:

i dont need extra points jus gimme brainliest

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It takes 32 hours for a motorboat moving downriver to get from pier A to pier B. The return journey takes 48 hours. How long doe

lina2011 [118]

Answer:

Time taken by the un powered raft to cover this distance is T = 192.12 hr

Step-by-step explanation:

Let speed of boat = u $\frac{km}{hr}$

Speed of current = v $\frac{km}{hr}$

Let distance between A & B = 100 km

Time taken in downstream = 32 hours

$32 = \frac{100}{u +v}$

$u + v = \frac{100}{32}$

u + v = 3.125 ------ (1)

Time taken in upstream = 48 hours

$48 = \frac{100}{u -v}$

$u -v = \frac{100}{48}$

u - v = 2.084 ------- (2)

By solving equation (1) & (2)

u = 2.6045 $\frac{km}{hr}$

v = 0.5205 $\frac{km}{hr}$

Now the time taken by the un powered raft to cover this distance

$T = \frac{100}{v}$

Because un powered raft travel with the speed of the current.

$T = \frac{100}{0.5205}$

T = 192.12 hr

Therefore the time taken by the un powered raft to cover this distance is

T = 192.12 hr

3 0

3 years ago

Read 2 more answers

URGENT !!! ANSWER NUMBER 7, right answer will get the brainlest!!!!

ra1l [238]

Answer:

Most likely wrong but i thinkkk C

Step-by-step explanation:

5 0

2 years ago

Pls help guys ur my only hope pls i need a good grade pls help plssssssss

juin [17]

Answer: The answer is B, 6 1/2

Step-by-step explanation:

6+5= 11

1/2+1/2= 1

11+1= 12

12-3=9

7 0

2 years ago

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15s^11-25s^4 factorised <br><br> plz tell me. :)

saveliy_v [14]

For the numeric part, you'll have to find the GCD of 15 and 25, which is 5. So, we can factor a 5 and we have

$5(3s^{11}-5s^4)$

As for the literal part, you can factor $s^4$ because it's the power of s with the smallest denominator. So, we have

$5s^4(3s^7-5)$

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3 years ago

Abby takes a 75-centimeter by 40-centimeter rectangle of fabric and cuts from one corner of

Grace [21]

answer: 195cm

the photo should explain

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2 years ago