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RideAnS [48]
4 years ago
6

(-5x² + 5x – 8) + (-x² – x– 9)

Mathematics
1 answer:
ELEN [110]4 years ago
8 0

Answer:

-6x^2 + 4x - 17.

Step-by-step explanation:

(-5x² + 5x – 8) + (-x² – x– 9) :

= -5x^2 + 5x - 8  - x^2 - x - 9

= -6x^2 + 4x - 17.

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T= hp+2b solving for b
N76 [4]
B=-1/3 hp+1/3 t


hope this helps
8 0
4 years ago
The square pyramids are similar. Find the volume of the smaller pyramid. Round your answer to the nearest hundredth.
frozen [14]

Answer:

A

Step-by-step explanation:

Since the pyramids are similar, the scale factor will be 3. So the height of the small pyramid is 6.3/3=2.1. The volume will be (1/3)*(2.1)*(2.3)^2=3.70

8 0
3 years ago
The classes at the middle school want to raise money. The sixth grade runs a bake sale for 55 hours and makes $170. The seventh
Jet001 [13]
The sixth grade runs a bake sale for 55 hours and makes $170.
So in one hour, they made 170/55 = 3.09 dollars.
Rate: $3.09/h

The seventh grade sets up a dunking booth for 44 hours and makes $112.
So in one hour, they made 112/44 = 2.54 dollars.
Rate: $2.54/h

The eight grade has a car wash and makes $192 in 66 hours.
So in one hour, they made 192/66 = 2.90 dollars.
Rate $2.90/h

3.09 > 2.90 > 2.54
So R(6th) > R(8th) > R(7th)

Which means that the sixth grade has the highest rate for raising money.

Hope this helps! :)
6 0
3 years ago
Read 2 more answers
Rashon breaks a granola bar in half and eats
mafiozo [28]
Rashon eats the least amount because kelly eats one extra peice
4 0
3 years ago
Find a vector function, r(t), that represents the curve of intersection of the two surfaces. the paraboloid z = 9x2 y2 and the p
dolphi86 [110]

The vector function is, r(t) =  \bold{ < t,2t^2,9t^2+4t^4 > }

Given two surfaces for which the vector function corresponding to the intersection of the two need to be found.

First surface is the paraboloid, z=9x^2+y^2

Second equation is of the parabolic cylinder, y=2x^2

Now to find the intersection of these surfaces, we change these equations into its parametrical representations.

Let x = t

Then, from the equation of parabolic cylinder,  y=2t^2.

Now substituting x and y into the equation of the paraboloid, we get,

z=9t^2+(2t^2)^2 = 9t^2+4t^4

Now the vector function, r(t) = <x, y, z>

So r(t) = \bold{ < t,2t^2,9t^2+4t^4 > }

Learn more about vector functions at brainly.com/question/28479805

#SPJ4

7 0
2 years ago
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