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2 years ago

Given the two points (2,4) and (-3,2), what is the slope of the line that goes through both of these points?

2 answers:

5 0

With the formula: m=(y1-y2)/(x1-x2) you can sub in the values to get the slope (m).

m=(4-2)/(2-(-3))
= 2/5

Therefore the slope is 2/5.

Katyanochek1 [597]2 years ago

4 0

For points (x1,y1) and (x2,y2)
the slope of the line going through those points is
(y2-y1)/(x2-x1)
given
(2,4) and (-3,2)
x1=2
y1=4
x2=-3
y2=2

slope=(2-4)/(-3-2)=-2/-5=2/5

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Maria has added 2 liters of pure alcohol to 8 liters of a 48% alcohol solution. What is the alcohol concentration of the resulti

ss7ja [257]

Answer:

The alcohol concentration of the resulting solution is 58.4%

Step-by-step explanation:

- At first we must to find the quantity of pure alcohol in the 8 liters

∵ The alcohol concentration is 48% in 8 liters

∴ The quantity of pure alcoholic = $\frac{48}{100}*8=3.84$ liters

- She added 2 liters pure alcohol to the solution that means the solution

increased by 2 liters and alcohol quantity increased by 2 liters

∵ She added 2 liters pure alcohol

∴ The quantity of pure alcohol = 2 + 3.84 = 5.84 liters

∴ The resulting solution = 2 + 8 = 10 liters

- Now we need to find the concentration of alcohol in the resulting

solution

∵ The quantity of pure alcohol = 5.84 liters

∵ The resulting solution = 10 liters

∴ The concentrate of alcohol = $\frac{5.84}{10}*100$ % = 58.4%

The alcohol concentration of the resulting solution is 58.4%

5 0

3 years ago

Read 2 more answers

WORTH 25 POINT PLEASE HELP WILL MARK THE BRAINLIST

AleksandrR [38]

Answer:

sure

Step-by-step explanation:

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4 0

2 years ago

8.6 x10^-9 in standard form

katen-ka-za [31]

-9 in power means that the value is in fractional and the 10 base is multipied 9 times and put it on denominator.

8.6 = 86 x 10^-1

Let's multiply :

86 x 10^-1 x 10^-9

= 86 x 10^-10

= 86/10000000000

=0,0000000086

Note : if you don't know about how 10^-1 x 10^-9 returns 10^-10, it's because of exponential rules. If the base are same wuth each other, then just do the addition operation in the exponent like this :

10^(-1+(-9))

= 10^(-1-9)

=10^-10

Hope it helps :)

4 0

2 years ago

A farmer took 2/3 of the strawberries that he harvested to a market. At the market, the farmer sold 1/4

Aliun [14]

Answer: If you are wondering how much he has left, there are 4/25 strawberries left

Step-by-step explanation:

5 0

2 years ago

Select the correct answer.

FrozenT [24]

Shouldn't the equation read " (x - 4)² = 81 ", instead of "(1 - 4)² = 81" ?

If so, then the solutions are x = -5 and x = 13 .

If it's really "(1 - 4)² = 81", then that's not even an equation, and there's no solution.

3 0

2 years ago