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Mamont248 [21]
3 years ago
11

Simplify the following algebraic expression 2(x^2+3x)-10(x^2+2)

Mathematics
1 answer:
4vir4ik [10]3 years ago
6 0

Answer:

-8x^2+6x-20

Step-by-step explanation:

2(x^2+3x)-10(x^2+2)

2x^2+6x-10x^2-20

(2x^2-10x^2)+6x-20

-8x^2+6x-20

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Answer:
x=-38/37
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Read 2 more answers
If john can drink one barrel of water in 6 days, and mary can drink one barrel of water in 12 days, how long would it take them
krek1111 [17]
Hello,

A good first step to take would be to calculate how much of a barrel John and Mary can drink together in 1 day.


If John can drink 1 barrel in 6 days, then every day he can drink 1/6 of a barrel.
If Mary can drink 1 barrel in 12 days, then every day she can drink 1/12 of a barrel. 

Every day, the total that John and Mary can drink will be (1/6) + (1/12) = (1/4) of a barrel.

If we want to know how many days it will take for them to drink 1 barrel of water together, and they drink 1/4 of a gallon every day, we do 

(1) / (1/4) = 1 * (4/1) = 4 days

It will take 4 days for John and Mary to drink 1 barrel together.

Hope this helps!


6 0
3 years ago
A theme park has a Ferris wheel that takes 2 minutes to go around its 450-foot circumference. The equation · (130) = 450 relates
olchik [2.2K]

Answer: The Ferris wheel’s speed in feet per hour.

Step-by-step explanation:

3 0
3 years ago
Find RA, 90: (2,5) given that point A is located at (-3, -3).
Anna71 [15]

Answer:

The value of RA is " 9.43".

Step-by-step explanation:

In the given question there is some typing mistake so, the points are:

R =(2, 5)

A= (-3, -3)

Find:

RA= ? where it is a distance (D).

Formula:

D= \sqrt{(x_2-x_1)^2+ (y_2-y_1)^2} \\\\\ compare  \ the \ value \\\\x_1 = 2\\y_1=5\\x_2=-3\\y_2= -3

put the value in the formula:

\Rightarrow D =\sqrt{(-3-2)^2+(-3-5)^2} \\\\\Rightarrow D =\sqrt{(-5)^2+(-8)^2} \\\\\Rightarrow D =\sqrt{25+64} \\\\\Rightarrow D =\sqrt{89} \\\\\Rightarrow D = 9.43\\

4 0
3 years ago
Need help fast i'll give the brainiest to who ever is right! tell me where to but the dots
Dmitriy789 [7]
Y-2= -3/4(x-6)
y=-3/4(x-6)+2
y=-3/4x+9/2+2
y=-3/4x+13/2

so for example if x=1 then y=5.76
or if x= 5 then y=2.75
7 0
4 years ago
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