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Natalka [10]
3 years ago
5

Please expand it (c-7d)2

Mathematics
1 answer:
asambeis [7]3 years ago
8 0

Answer:

c² - 14cd + 49d²

Step-by-step explanation:

Given

(c - 7d)²

= (c - 7d)(c - 7d)

Each term in the second factor is multiplied by each term in the first factor, that is

c(c - 7d) - 7d(c - 7d) ← distribute both parenthesis

= c² - 7cd - 7cd + 49d² ← collect like terms

= c² - 14cd + 49d²

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Oksanka [162]
5 points, because I think you’re saying they started off with 30 points and they answered a question wrong a lost 25 so 30-25 is 5.
8 0
3 years ago
The number of bacteria in a culture is expected to grow 82% per hour over the next several hours. The predicted change in the nu
Advocard [28]
If my simplification is valid the answer is:

1.4 % growth each minute

I don’t feel like the representation
P = 120(1.82) is important in this certain problem.

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4 0
1 year ago
Question 2 Multiple Choice Worth 5 points)
DerKrebs [107]

Answer:

√20 units.

Step-by-step explanation:

Please see attached photo for diagram.

The other leg of the triangle is x as shown in the attached photo.

Using the pythagoras theory, we can obtain the the value of x as follow:

x² = 4² + 2²

x² = 16 + 4

x² = 20

Take the square root of both side.

x = √20 units

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5 0
3 years ago
HELP FAST 20 POINTS PLEASE HELP IM BEGGINGGg
Kobotan [32]

Answer:

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Step-by-step explanation:

For every $3.5 is 1 mile.

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S_A_V [24]

Answer:

x = 15

Step-by-step explanation:

isolate the variable by dividing each side by the factors that don’t contain the variable

6 0
3 years ago
Read 2 more answers
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