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BartSMP [9]
3 years ago
6

(3x²-5x4) + (-x²-7x+5)

Mathematics
1 answer:
lara [203]3 years ago
5 0

Simplify

3x^2 - 5x^4 - x^2 - 7x + 5

Collect like terms

(3x^2 - x^2) - 5x^4 - 7x + 5

Simplify

<u>2x^2 - 5x^4 - 7x + 5</u>

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30% of the employees at a company picnic ate a hot dog for lunch. If 18 employees ate a hotdog, how many people were at the picn
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There are 60 marbles in a leather bag. Some of the marbles are blue, some are green, some are clear, some are gold, and some are
mr_godi [17]

Answer:12 blue marbles

Step-by-step explanation:

I by 5 percent chance of blue marble

Let the number of blue marbles be x

X/60=1/5

5x=60

X=60/5

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Complete the equation of the line whose y-intercept is (0.-1) and slope is 4.
meriva
Well just by looking at the information provided, you can tell that the equation would look like y = 4x -1. The y-intercept is -1 because the x value is 0. But if you want to see how to solve it algebraically, here’s an explanation... You need to substitute the y-intercept into the equation in order to solve for b, which would then complete the equation. Take the equation y=mx+b. Substitute in the slope and xy values, (-1) = 4(0) + b. Now the equation should look like this: -1 = b. So now that you have the value of b, the complete equation should be y=4x-1
3 0
3 years ago
Two concentric circles with different radii share how many common tangent lines?
Dominik [7]
The answer is a.0

Concentric means these circles would have the same center, thus, the smaller circle must be inside the bigger circle. Any tangent line to the smaller circle wont be a tangent line to the bigger circle, since that tangent line would intersect at the bigger circle at 2 points. Any tangent line to the big circle will not touch the small circle... so the answer would be 0.
7 0
3 years ago
For the point P (-17,25) and Q(-10,30), fins the distance d(P,Q) and the coordinates of the midpoint M of the segment PQ.
Nonamiya [84]

Answer:

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M = (-13.5,27.5)

Step-by-step explanation:

Distance = \sqrt{(x_{2 }- x_{1 })^2 + (y_{2 }- y_{1 })^2

= \sqrt{(-10_ }- (-17)_{ })^2 + (30_{ }- 25_{ })^2

= \sqrt{(-10_{ }+ 17_{ })^2 + 5^2_

= \sqrt{7^2+5^2}

= \sqrt{49+25}

= \sqrt{74}

= 8.6

Midpoint = (\frac{x_{2}+x_{1}}{2};\frac{y_{2}+y_{1}}{2})

= (-10+(-17)) ÷ 2 ; (30+25) ÷ 2

= -27 ÷2 ; 55 ÷ 2

= -13.5, 27.5

3 0
2 years ago
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