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lesantik [10]
3 years ago
14

Hi, Please help me solve 28

Mathematics
1 answer:
Yuliya22 [10]3 years ago
7 0
B is 50 and A is all of them?
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Find the next numbers 5, 1, 7, 0, 9, -1, 11...
slamgirl [31]

Answer:

7,13,6

Step-by-step explanation:

you must take the number minus 4 then add 6 minus 7 then add 9, minus 10 then add 12.

3 0
3 years ago
Dave Flip a coin 20 times and got heads on eight of the flips Based on Dave's results what is the experimental probability of th
Alex Ar [27]

Answer:

Experimental probability of head = 2 / 5 or 40%

Step-by-step explanation:

Given:

Total chances of getting head = 20 times

Number of heads come = 8

Find:

Experimental probability of head

Computation:

Experimental probability of head = Number of heads come / Total chances of getting head

Experimental probability of head = 8 / 20

Experimental probability of head = 2 / 5 or 40%

3 0
3 years ago
A boat travels 33 miles downstream in 4 hours. The return trip takes the boat 7 hours. Find the speed of the boat in still water
Paha777 [63]

<u>Answer:</u>

Speed of the boat in still water = 6.125 miles/hour

<u>Step-by-step explanation:</u>

We are given that a boat travels 33 miles downstream in 4 hours and the return trip takes the boat 7 hours.

We are to find the speed of the boat in the still water.

Assuming S_b to be the speed of the boat in still water and S_w to be the speed of the water.

The speeds of the boat add up when the boat and water travel in the same direction.

Speed = \frac{distance}{time}

S_b+S_w=\frac{d}{t_1}=\frac{33 miles}{4 hours}

And the speed of the water is subtracted from the speed of the boat when the boat is moving upstream.

S_b-S_w=\frac{d}{t_2}=\frac{33 miles}{7 hours}

Adding the two equations to get:

   S_b+S_w=\frac{d}{t_1}

+  S_b-S_w=\frac{d}{t_2}

___________________________

2S_b=\frac{d}{t_1} +\frac{d}{t_2}

Solving this equation for S_b and substituting the given values for d,t_1, t_2:

S_b=\frac{(t_1+t_2)d}{2t_1t_2}

S_b=\frac{(4 hour + 7hour)33 mi}{2(4hour)(7hour)}

S_b=\frac{(11 hour)(33mi)}{56hour^2}

S_b=6.125 mi/hr

Therefore, the speed of the boat in still water is 6.125 miles/hour.

6 0
3 years ago
Read 2 more answers
Geometry help please
-BARSIC- [3]

Answer: angle 1 is 121 and the reasoning is corresponding angle

Step-by-step explanation:

5 0
3 years ago
Roberta Arthur had the following reciepts for the week of April 12th: 50$ gift; 25$ rebate; April 13th, 2.45$ refund on aluminum
oksian1 [2.3K]

Answer:

$329.44

Step-by-step explanation:

 $50-25= 25

 25.00-2.45=22.55

 299.89+22.55=322.44

322.44+7.00= 329.44

I didnt see april 15 if its supposed to be added i there just add 299.89 to the total.

7 0
3 years ago
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