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julia-pushkina [17]
3 years ago
5

Please tell i really need the answer:

Mathematics
1 answer:
Ghella [55]3 years ago
4 0

Answer:

26m

Step-by-step explanation:

8m x 2 = 16

5m x 2 = 10

16m + 10m = 26m of wires

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IS THIS RIGHT <br> JUST ANSWER YES OR NO
Ivanshal [37]

Answer:

B

Step-by-step explanation:

x^3 + 2x^2 - 9x - 18 = x^2(x + 2) - 9(x + 2) = (x + 2)*(x^2 - 9)

(x + 2)/(x + 2)(x^2 - 9) = 1 / (x^2 - 9)

==============

1/(x^2 - 9) * (x^2 - 9)/(3x  + 1) = 1/(3x + 1)


Yes B is correct.


4 0
3 years ago
Read 2 more answers
Y = 3/5x + 1, 5y = 3x - 2, 10x - 6y = -4<br> is it perpendicular, parallel, neither
Ber [7]

Answer:

y=\frac{3}{5} x+1 and 5y=3x-2 are parallel.

10x-6y=-4 is neither parallel nor perpendicular.

Step-by-step explanation:

First, you have to simplify each equation in terms of y.

y=\frac{3}{5} x+1\\5y=3x-2\\10x-6y=-4

Your first equation is already in terms of x, so simplify your second equation.

5y=3x-2\\y=\frac{3}{5} x-\frac{2}{5}

Now you can simplify your third equation.

10x-6y=-4\\-6y=-10x-4\\y=\frac{5}{3} x+\frac{2}{3}

These are your three equations in terms of y:

y=\frac{3}{5} x+1\\\\y=\frac{3}{5} x-\frac{2}{5} \\\\y=\frac{5}{3} x+\frac{2}{3}

Now, all you have to know is how to tell using your slope if a line is parallel or perpendicular to another.

Two parallel lines will have the exact same slope.

Two perpendicular lines will have slopes which are opposite reciprocals. For example, a line with a slope of 2 is perpendicular to a line with a slope of -\frac{1}{2}, as they have opposite signs and are reciprocal (2/1 versus 1/2) to each other.

Your first two equations have the same slope and are therefore parallel.

Your third equation is a reciprocal, but it is not opposite, and is therefore not parallel nor perpendicular.

5 0
3 years ago
The Petersons deposited $1,000 in an account that earns 2% annual simple interest. How many years will it take the amount in the
Svetlanka [38]
Each year it will gain $10 so it will take 50 years.

1,000 × .02 = 20
1,000 ÷ 20 = 50
7 0
3 years ago
Which is the completely factored form of 4x2 + 28x + 49?
Gelneren [198K]

Answer:

57+28x

Step-by-step explanation:

only this

i don't know you 4x2 or 4x+2

7 0
3 years ago
How can you write an inequality to describe a situation?
LiRa [457]
For example let’s use something simple.

1+1 < 3+6
Why is this?
Because 1 +1 = 2 and that is less than 3 + 6 which is 9. Next time, apply this to something harder you might learn. I hope this helped <3
3 0
2 years ago
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