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3 years ago

Junnie walked for 2.5 hours at a speed of 3.miles per hour. How far did Junnie walk?

Mathematics

2 answers:

Leona [35]3 years ago

8 0

Answer:

7.5 miles

Step-by-step explanation:

2.5 times 3

hope this can help you :-P

anzhelika [568]3 years ago

8 0

2.5 times 3 = 7.5 in miles per hour per means multiplication

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Break apart the addends to find the sum 33+49

schepotkina [342]

19 if u add all separately but it is 89 it u don't

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3 years ago

Read 2 more answers

5.) How many, and what type of solutions does 2x^2 + 11x + 15 = 0 have?

-Dominant- [34]

Answer: A i think

Step-by-step explanation:

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3 years ago

The graph below plots the values of y for different values of x: (look at graph picture)

Dima020 [189]

Answer:

A: x and y have a strong, positive correlation

Step-by-step explanation:

Correlation coefficient measures the relation between two variable.

it signifies how the value of one variable will change when the change in other variable is made.

Its value ranges from 0 to 1

0 represent no relation
1 represent strong relation

thus, as value increases from 0 to 1 , correlation strength increases.

Correlation coefficient can be negative and positive

negative relation signifies that as value of one variable increases then the value of other will decrease and vice-versa
positive relation signifies that as value of one variable increases then the value of other will also increase and vice versa

Given, that correlation coefficient between x and y is 0.9

since there is no negative sign it means there is positive correlation

value is 0.9

as 0.9 is nearer to 1, it is clear that relation is strong.

based on above discussion

option A

x and y have a strong, positive correlation is correct answer

If we look at graph we can see that as x increases y also increases.

the rate of increase of value of y in response of x is also high.

Thus, graph also shows that there is strong positive correlation

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3 years ago

Loretta places 20 red tiles in a bag. How many blue tiles must be added to the bag to make the probability of randomly drawing a

Galina-37 [17]

Answer:

If the number of blue tiles in the bag is 180, then the probability of randomly drawing a red tile equal to 1/10.

Step-by-step explanation:

Total number of red tiles in a bag = 20

Let us assume the number of blue tiles in a bag = p

So, the total number of tiles in a bag = Red Tiles + Blue tiles

= 20 + p

Now, let us find the probability of drawing a red tile:

$\textrm{The probability of drawing a red tile} = \frac{\textrm{Total Number of red tiles}}{\textrm{Total Tiles}}\\= \frac{20}{20 + p}$

But, here the probability of drawing a red tile = 1/10

$\implies \frac{1}{10} = \frac{20}{20+p} \\\implies 20 + p = 200\\\implies p = 200- 20 = 180$

or, p = 180

Hence, if the number of blue tiles in the bag = 180, then the P Picking out a red tile ) is 1/10.

5 0

3 years ago

Find the percent of change. Round to the nearest tenth of a percent if necessary. 57 people to 65 people. About___ % increase.

kap26 [50]

Answer:

14.0% increase

Step-by-step explanation:

One formula you can use for this is ...

percent change = ((new value)/(old value) -1) × 100%

= (65/57 -1) × 100%

≈ 0.1403 × 100%

≈ 14.0% . . . . . . the positive sign indicates an increase

5 0

3 years ago