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3 years ago

The formula P=2(l + w)relates the perimeter P, in decimeters, with the length and width of a rectangle.

Mathematics

1 answer:

Degger [83]3 years ago

8 0

Answer:

3. w=P/2-L

Step-by-step explanation:

Given formula:

P=2(l + w)

Solving for w:

P=2(l + w)
P/2 = 2(l + w)/2
P/2 = l + w
P/2 - l = l + w - l
P/2 - l = w
w = P/2 - l

Correct answer choice is:

3. w=P/2-L

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Which of the following strategies is appropriate for factoring polynomials with 4 terms?

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Mary has $65,000 to invest in two accounts. The first account is a private savings offering 6% annual interest and the second ac

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Answer:

first account with 6% interest ( x ) = $46000

second account with 4% interest ( y ) = $19000

Step-by-step explanation:

Principal = $65000

first interest rate = 6%

second interest rate = 4%

assuming ; X = money invested in first account , Y = money invested in second account

hence :

( 65000 - y ) * 6% + ( 65000 - x ) * 4% = 3520

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0.04 x + 0.06 y = 2980 ----- ( 1)

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0.06 x + 0.06 y = 3900 ------- ( 4 )

subtract equation 3 form equation 4

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therefore y = $65000 - $46000 = $19000

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3 years ago

What is the stem and leaf plot

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3 years ago

7/8 and 3/4 in addition to complete the fraction box?

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7/8 and 3/4
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3 years ago

Let K and T be the current ages of two siblings, Katie and Thomas. Katie is currently twice the age of Thomas. In 6 years, Katie

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Answer:

Katie is 6 years old and Thomas is 3 years old

Step-by-step explanation:

Given that we should let K and T be the current ages of two siblings, Katie and Thomas.

If Katie is currently twice the age of Thomas then,

K = 2T

and in 6 years, Katie will be 4 times Thomas's current age then

K + 6 = 4T

Solving both equations simultaneously by substituting the value of K given in the first equation into the second

2T + 6 = 4T

Collect like terms

6 = 4T - 2T

6 = 2T

Divide both sides by 2

T = 3

Recall that K = 2T

K = 2 * 3

= 6

Hence Katie is 6 years old while Thomas is 3 years old

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2 years ago