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torisob [31]
4 years ago
9

Multiply (2t^2-t-8)(2t^2+2t-1)

Mathematics
1 answer:
algol134 years ago
5 0

(2t^2−t−8)(2t^2+2t−1)

= (2t^2+−t+−8)(2t^2+2t+−1)

= (2t^2)(2t^2) + (2t^2)(2t) + (2t^2)(−1) + (−t)(2t^2) + (−t)(2t) + (−t)(−1) + (−8)(2t^2) + (−8)(2t) + (−8)(−1)

=4t^4+4t^3−2t^2−2t^3−2t^2+t−16t^2−16t+8

=4t^4+2t^3−20t^2−15t+8

Sorry if I made it too complicated

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Suppose you construct lines L, M, and N so that L is perpendicular to M and L is parallel to N. which of the following is true.
Blizzard [7]

In the question we are given three lines L,M and N such that:

Line L is perpendicular to M

and line L is parallel to line N

so the option is (C) M is perpendicular N

Step-by-step explanation

We are given three lines L,M and N such that:

  • Line L is perpendicular to M
  • Line L is parallel to line N

<u>We know that when one line parallel to the second line and is perpendicular to the third line then the second line is also perpendicular to the third line.</u>

<u></u>

So,the answer is  (C) M is perpendicular N

3 0
3 years ago
The cost of C (in dollars) of making n watches is represented by C=15n+85. How many watches are made when the cost is $385?
hichkok12 [17]

well...

15 x 20 = 300

300+85 = 385


you can get 20 watches for $385


4 0
3 years ago
I am struggling hard out with linear algebra in math level one
Elena L [17]
I would recommend "Introduction to Linear Algebra," by Gilbert Strang. It is a compact but very helpful textbook reference written by a well-known MIT professor. There is a corresponding online MIT course that is free, so that's a bonus. I am currently using it to study linear algebra with no class or previous experience, and I think it does a solid job of explaining things. Each section in the book has a set of questions for you to work through, and answers to selected questions appear in an appendix at the end of the book. Hope this helps!
4 0
3 years ago
Pi High School ordered 40 science books. The next week, the school ordered 30 algebra books. The bill for the first order was $3
maria [59]

Answer:

Each algebra book costs $60.

Step-by-step explanation:

A=bill for algebra books; S=bill for science books=A+$360

S+A=$3960 Substitute for S

A+$360+A=$3960 Subtract $360 from each side.

2A=$3600 Divide each side by 2.

A=$1800 The order for 30 algebra books cost $1800.

Individual book=A/30

individual book=$1800/30=$60 ANSWER: Each algebra book cost $60.

4 0
3 years ago
Find x if f(x) = 2x + 7 and f(x) = -1.<br> A.5<br> B.-4<br> C.-4
faltersainse [42]

Answer:

x = - 4

Step-by-step explanation:

Hi there !

 if f(x) = 2x + 7 and f(x) = -1 =>

2x + 7 = - 1

2x = - 1 - 7

2x = - 8

x = - 8 ÷ 2

x = - 4

Good luck !

5 0
3 years ago
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