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Nitella [24]
3 years ago
11

Which polynomial identity will prove that 65 = 81 - 16

Mathematics
1 answer:
steposvetlana [31]3 years ago
8 0
9^2 - 4^2 = (9 + 4)(9 - 4)
So the polynomial identity used here is
(x + y)(x - y) =  {x}^{2}  - {y}^{2}
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A piece of cable 8.5 cm long weighs 52 grams. How much does a cable that is 10 cm long weigh
Arturiano [62]
8.5 cm cable weighs = 52 grams

1 cm of cable weighs = \frac{52}{8.5}grams
                                      
                                      = 52/ \frac{85}{10} grams
                                      = 52* \frac{10}{85} grams
                                      = \frac{520}{85} grams
                                      = 6.11764 grams
Rounding it up = 6. 10000 grams

Then, 

10 cm of cable weighs = 6.10*10 grams
                                            <span>    </span>= 61.0 grams

6 0
3 years ago
Jodie bought some shirt for $6. Marge bought soñé shirts por $8 each. The girls spent the same amount of money on shirt. What is
qwelly [4]
Hi!

6 × 8 = 48

The least amount they could've spent is $48. =)

7 0
3 years ago
Can someone help me already gosh<br> ill give brainliest
Mumz [18]

Step-by-step explanation:

1.1 yards

5 0
3 years ago
Olivia decides to hire an electrician. The electrician charges $35 to come out to Olivia's
atroni [7]

Answer:

Step-by-step explanation:

Total cost

C (x) = 35+ 60x

Where,

Fixed cost= $35

Variable cost = 60x

x= number of hours of work

Total cost is the addition of fixed and variable cost

C (x) = 35+ 60x

C(5)= 35 + 60(5)

= 35 + 300

=335

C(5) = 335

C(5) = 335 is Olivia's total cost of hiring the electrician

x=5 is the electrician's number of hours of work

35= fixed cost of hiring the electrician

60(5) = 300 is the variable cost of hiring the electrician for 5 hours

5 0
3 years ago
Mike has $68 more than Min. Mike has $94. How much money does Min have?
yaroslaw [1]
94 MINUS 68 EQUAL 26 DOLLARS MIN HAS
4 0
3 years ago
Read 2 more answers
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