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2 years ago

NEED HELP FAST PLEASE

Mathematics

1 answer:

Sedaia [141]2 years ago

5 0

Answer:

The scatter plot shows a positive association

Step-by-step explanation:

the points show an increasing tendency

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Solve for .<br> Simplify your answer as much as possible.

ludmilkaskok [199]

Answer:

v=5.75

Step-by-step explanation:

7/8=v+3/10

first do cross multiplication to get

7×10=8(v+3)

70=8v+24

70-24=8v

46=8v

46÷8=v

v=5.75

6 0

3 years ago

1500 personnes ont participé à un sondage. Les sept vingt-cinquièmes d'entre elles ont moins de 18 ans. Combien mineurs ont été

aliya0001 [1]

Answer:

Step-by-step explanation:

6 0

3 years ago

Use the three steps to solve the problem.

sukhopar [10]

Try this option (see the attacthed file; answer is marked with red colour); note, that

$t_{c-} = upstream \ time; \ t_{c+}=downstream \ time.$

answer: 2 m/h.

6 0

4 years ago

Read 2 more answers

nikki grows 12 tomato plants. she measures their heights to the nearest centimetre, and writes them down. Complete the frequency

sdas [7]

Answer:

Nikki grows 20 tomato plants and she measures their heights.

We want to complete the frequency table.

All we have to do is count the number of values that fall between each range.

The values are:

5 10 12 16 14

17 20 15 10 7

13 11 6 18 15

6 12 17 8 12

Height Frequency

-> 5 ≤ h < 10 5

10 ≤ h < 15 8

15 ≤ h < 20 6

20 ≤ h < 25 1

5 0

4 years ago

If a person rows to his favorite fishing spot 14 miles downstream in the same amount of time that he rows 2 miles upstream and i

Maru [420]

We will use distance formula which states:

$d=r \times t$

where 'd' is the distance, 'r' is rate or speed and 't' is time taken.

So, $t=\frac{d}{r}$

Let 'u' be the speed of boat in still water.

A person rows 14 miles downstream to the fishing spot.

So, the speed of boat downstream = (u+6) mph

Time taken by boat to go downstream = $\frac{14}{u+6}$ hr

He rows 2 miles upstream from the fishing spot.

So, the speed of boat upstream = (u-6) mph

Time taken by boat to go upstream = $\frac{2}{u-6}$ hr

Since, The person took same amount of time in going downstream and then going upstream.

So, $\frac{14}{u+6}=\frac{2}{u-6}$

Cross multiplying, we get

$14 (u-6)= 2(u+6)$

$14u - 84 = 2u + 12$

$12u = 96$

u = 8

So, speed of boat in still water is 8mph.

Now, Time taken in going downstream = $\frac{14}{u+6}$

= $\frac{14}{8+6}$

= 1 hr

Now, Time taken in going upstream = $\frac{2}{u-6}$

= $\frac{2}{8-6}$

= 1 hr

So, total time taken to cover 16 miles is 2 hours.

8 0

3 years ago