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diamong [38]
3 years ago
9

The expression 2l + 2w is used to find the perimeter of a rectangle with length l and width w. What is the perimeter of a rectan

gle with length 14 cm and width 4 cm?
Mathematics
1 answer:
goldfiish [28.3K]3 years ago
5 0

Answer:

<u>3</u><u>6</u><u>cm</u>

Step-by-step explanation:

2l + 25

l=14cm, w= 4cm

2(14cm+4cm)=

28cm + 8cm=

<u>36cm</u>

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S=n(a1+an)/2 gives the partial sum of an arithmetic sequence. What is the formula solved for an?
Veseljchak [2.6K]
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6 0
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Read 2 more answers
How to solve an expression with variables in the exponents?
gtnhenbr [62]

Answer:

  use logarithms

Step-by-step explanation:

Taking the logarithm of an expression with a variable in the exponent makes the exponent become a coefficient of the logarithm of the base.

__

You will note that this approach works well enough for ...

  a^(x+3) = b^(x-6) . . . . . . . . . . . variables in the exponents

  (x+3)log(a) = (x-6)log(b) . . . . . a linear equation after taking logs

but doesn't do anything to help you solve ...

  x +3 = b^(x -6)

There is no algebraic way to solve equations that are a mix of polynomial and exponential functions.

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Some functions have been defined to help in certain situations. For example, the "product log" function (or its inverse) can be used to solve a certain class of equations with variables in the exponent. However, these functions and their use are not normally studied in algebra courses.

In any event, I find a graphing calculator to be an extremely useful tool for solving exponential equations.

8 0
3 years ago
Is 7 - -4 positive or negative?<br> positive<br> negative
djverab [1.8K]

Answer:

Positive.

Step-by-step explanation:

When you see two negative signs directly next to each other (as shown in the given expression), it will become a positive sign:

7 - (-4) = 7 + 4 = 11

Positive is your answer.

* To be fair, even if there is only one negative sign, the answer will still be positive, however, I am assuming you are suggesting only the sign, and not the answer.

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7 0
3 years ago
Who speak spanish? Oh and also solve this =
Lelechka [254]
The answer to your question is 95,460
4 0
3 years ago
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