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DedPeter [7]
3 years ago
14

What is the product of the polynomials below?

Mathematics
2 answers:
AysviL [449]3 years ago
8 0
Hi there! The answer is C.

(5 {x}^{2}  + 5x + 7)(8x + 6) =  \\ work \: out \: parenthesis \\  \\  40 {x}^{3}  + 30 {x}^{2}  + 40 {x}^{2}  + 30x + 56x + 42 =  \\ collect \: terms \\  \\ 40 {x}^{3}  + 70 {x}^{2}  + 86x + 42
drek231 [11]3 years ago
6 0
The answer is C

40x3 + 70x2 + 86x + 42
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8a – 6+2=-7+ 7a solve the
Kisachek [45]

A = -3

8a-6+2=-7+7a

Add 2 to -6

8a-4=-7+7a

Subtract 7a from 8a

Add 4 to -7

Then you get

A= -3

7 0
3 years ago
For how many movies is the cost of the plans the same?
sesenic [268]

Answer:

For 36 movies the cost of both the plans is same.

Step-by-step explanation:

Let us assume foe m movies, both the plans cost same.

Now, PLAN A:

Annual Fee = $45

Cost per movie  =  $2.50

⇒The cost of watching m movies  = m x (Cost of 1 movie)

= m x ($2.50) = 2.5  m

So, the total cost of Plan  A  = Annual Fee + Cost of m moves

                                                 = 45 + 2.50 m

PLAN B:

Cost per movie  =  $3.75

⇒The cost of watching m movies  = m x (Cost of 1 movie)

= m x ($3.75) = 3.75  m

ACCORDING TO QUESTION:

for m movies,  Cost of plan A = Cost of plan B

⇒45 + 2.50 m  = 3.75  m

or, 3.75 m  - 2.5 m = 45

or, m  = 45/1.25 = 36

or, m  = 36

Hence, for 36 movies the  cost of  both the plans is same.

5 0
3 years ago
Which irrational number can be added to Pi to get a sum that is rational?
s2008m [1.1K]

Answer:

letter b

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
First, complete the story below so that it can be represented by the equation 14x- 15 = 11x
dedylja [7]
Answer would be 65 copies
4 0
2 years ago
Anybody know this ? Please help :(
Ad libitum [116K]

Answer:

D

Step-by-step explanation:

5.50. 5.50+0.25= 5.75, 5.75+0.25= 6.00, 6.00+0.25= 6.25, 6.25+0.25= 6.50

Option D is the answer:

5.50, 5.75, 6.00, 6.25, 6.50...

5 0
3 years ago
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