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Effectus [21]
3 years ago
9

Please ignore my work. Can you please solve and show all work, thanks

Mathematics
1 answer:
valina [46]3 years ago
3 0

Answer:

Answer is (1): 2 times (x^2 -13)

Step-by-step explanation:

Using the FOIL method, you can conclude that (x-5)(x+5) is X^2 -5x +5x -25. Since the two middle terms cancel, you are left with X^2 -25. For the right side of the equation, (x-1)(x+1), using the FOIL method gets you x^2 -x +x -1. Once again, the -x and x cancel out and you end up with X^2 -1. To add both of these together, you can get rid of all parentheses and do the work. Two x^2 added together is 2X^2, and -25-1 is negative 26. After this, you end up with 2x^2 -26. To get to your final answer you need to take out the GCF of both terms, (the largest number that can go into 2x^2 and -26), which is 2. Taking the two out leaves us with 2(x^2 -13), which is your final answer. It looks like you were on the right track.

FOIL Property

Multiply first terms

Then Outside terms

Then inside terms

Then the last terms

Hope this helps!

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What is the surface area of the triangular prism represented by the net below?
Blizzard [7]

Answer:

608 cm^2

Step-by-step explanation:

<em>Top and bottom rectangles: </em>

2(10*16)

       = 2(160)

       = 320

<em>Middle rectangle:</em>

(12*16)

       = 192

<em>Two triangles:</em>

2((12*8)/2)

       = 2(96/2)

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<em>Surface area of the whole prism:</em>

320 + 192 +96

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6 0
3 years ago
Please help with this math question'
lianna [129]

Answer:

The rocket's maximum height will be 1424 feet.

It will reach that height in 4 seconds.

It will reach the ground  in 8 seconds.

Step-by-step explanation:

One easy way to find the peak is to find the derivative and solve for zero:

h(t) = -16t² + 128t + 1680

To find the derivative of each term in that format, you simply multiply the coefficient by the exponent, and reduce the exponent by one.  In the case of terms with no variable, they disappear.  That gives us:

h'(t) = -32t + 128

This derivative describes the rate of change of h with respect to t, so to find the peak, we simply need to solve it for zero:

0 = -32t + 128

32t = 128

t = 4

So the maximum height occurs when t = 4.  Let's plug it in to the original equation:

h(t) = -16t² + 128t + 1680

h(4) = -256 + 512 + 1680

h(4) = 1424

So the rocket's maxiumum height is 1424 feet.

And we've already answered the second question, it happens at 4 seconds.

Also, the amount of time going up will be the same as the amount of time going down, which means that it will reach the ground in twice that time, or 8 seconds.

6 0
3 years ago
Convert the given amount to the given unit.<br> 27 yd; ft<br> 27 yd = ft
timurjin [86]

Answer:

81 ft

Step-by-step explanation:

1 yard=3ft

27 x 3=81

So the answer is 81 ft

4 0
3 years ago
Read 2 more answers
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kipiarov [429]
Ok circumference= 2pi r. So r= 32.5. Area = pi*r*2 do the answer should be either C or D
3 0
4 years ago
Read 2 more answers
Find the area of this parallelogram​
mixer [17]

Answer:

Area of this parallelogram​ A = base x height = 11 x 6 = 66 (cm2)

Hope this helps!

:)

5 0
3 years ago
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