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4 years ago

Kala runs 10 miles in 85 minutes. At the same rate, how many minutes would she take to run 8 miles

1 answer:

4 0

$\text{First, lets find how many miles she can run in 1 minute}\\\\\text{To find this, divide 85 by 10}\\\\85\div10=8.5\\\\\text{Now multiply 8.5 by 8 to see how many minutes she would take:}\\\\8.5 \cdot8 = 68\\\\\text{This means that it'll take her 68 minutes to run 8 miles}\\\\\boxed{68\,\text{minutes}}$

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1. Is the relation a function and why or why not? {(1, 2), (2, 3), (1, 6), (4,3)}

weqwewe [10]

Answer:

Its not a function, D

Step-by-step explanation:

its not a function because the x value, 1, repeats. input is x and output is y, so the input of 1 has more than one output.

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3 years ago

I need to simplify this expression 1+4(2x-3)-x

IceJOKER [234]

Answer:quit

Step-by-step explanation:

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4 years ago

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9. If the area of square 1 is 250 units?, and the area of square 3 is

Aleks [24]

Answer:

185 units.

Step-by-step explanation:

So first, I subtracted: 250 - 120 = 130

I divided 130 by 2. I got 65.

I subtracted 65 from 250 and I got 185.

Proof it is correct:

185 - 120 = 65

AND

250 - 185 = 65

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3 years ago

What is the distance between the points (2,10) and (-6, 4) on the coordinate

stellarik [79]

Answer:

The distance between the given points (2,10) and (-6, 4) on the coordinate plane is 10units

Therefore distance s=10 units

Step-by-step explanation:

Given points are (2,10) and (-6, 4) on the coordinate plane

To distance between the given points :

The distance formula is $s=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ units

Let $(x_1,y_1)$ , $(x_2,y_2)$ be the given points (2,10) and (-6, 4) respectively

Now substituting the values in the distance formula we get

$s=\sqrt{(-6-2)^2+(4-10)^2}$

$=\sqrt{(-8)^2+(-6)^2}$

$=\sqrt{8^2+6^2}$

$=\sqrt{64+36}$

$=\sqrt{100}$

$=10$

Therefore s=10 units

The distance between the given points (2,10) and (-6, 4) on the coordinate plane is 10units

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4 years ago

The water level as a river recedes after a flood is measured at regular intervals, and its height relative to normal, in inches,

Tems11 [23]

Answer:

-26

Step-by-step explanation:

Given the sequence:

16, 9, 2, –5, ...,

To find:

7th measurement, if the above sequence continues:

Solution:

Let us examine the given sequence first:

First term is 16

Second term = 9

Third term = 2

Fourth term = -5

Difference between 2nd and 1st term = 9 - 16 = -7

Difference between 3rd and 2nd term = 2 - 9 = -7

Difference between 4th and 3rd term = -5 - 2 = -7

We can see that there is a common difference of -7 between each term.

That means, the sequence is in Arithmetic Progression.

whose first term, $a=16$

Common difference, $d=-7$

To find:

7th term i.e. $a_7=?$

Solution:

Formula for $nth$ term of an Arithmetic Progression is given as:

$a_n=a+(n-1)d$

Let us put $n=7$

$a_7=16+(7-1)\times (-7)\\\Rightarrow a_7=16+6\times (-7)\\\Rightarrow a_7=16-42\\\Rightarrow \bold{a_7=-26}$

7th measurement will be -26.

6 0

3 years ago

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