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Cloud
3 months ago
8

A rectangle has area 64 m2. Express the perimeter of the rectangle as a function of the length L of one of its sides. State the

domain of P
Mathematics
1 answer:
Leona [12.6K]3 months ago
3 0
A rectangle is defined as a two-dimensional figure that features two pairs of equal, parallel sides. Its dimensions consist of length (L) and width (W). The area of a rectangle can be calculated using the formula that multiplies these two dimensions together. The perimeter can be expressed as

P = 2L + 2W.

Given that
A = LW = 64
therefore, W = 64/L.
Substituting this value into the perimeter formula yields

P = 2L + 2(64/L)
P = 2L + 128/L.
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Two runners are saving money to attend a marathon. The first runner has $112 in savings, received a $45 gift from a friend, and
zzz [12365]

Response:

The accurate answer is the last choice, specifically 112 + 25m + 45 = 50 + 60m

Detailed explanation:

The initial runner has $112 saved, received a $45 gift from a friend, and intends to save $25 monthly. Consequently, after m months, this first runner's account balance will total: 112+45+25m

The second runner starts with $50 and will put away $60 each month. Therefore, the second runner's account total after m months works out to: 50 + 60m

To find at what point both account totals align, the equation established is:

112+45+25m=50+60m

By applying the commutative property to the left side, we obtain:

112+25m+45=50+60m

Thus, it is evident that the last option is the correct response.

7 0
2 months ago
Read 2 more answers
Which triangle results from a reflection across the line x = 1?
Zina [12379]
The correct answer is option D. Detailed explanation: As per the attached image. Observing the image, the coordinates are outlined. To determine the reflection of a point across a line, the distances from the points to the line must be equal. Point A(1,1) sits on the line x = 1, meaning its reflection A' remains at A'(1,1). Point C(2,5) is a distance of 1 from x = 1 on the right, hence its reflected position C' shifts left by the same distance — subtracting 1 from its x-coordinate places it at C'(1 - 1, 5) or C'(0, 5). Point B(4,1) is positioned 3 from x = 1 on the right; therefore, its reflection B' would also move left by 3 – leading to B'(1 - 3, 1) or B'(-2, 1). Plotting A', B', and C' confirms option D as the correct choice.
7 0
2 months ago
Read 2 more answers
Ella spent her whole allowance of $2.00, plus the 16¢ she had left over from last week, in bubble gum. If the pieces of gum had
Zina [12379]
Determining the answer here is quite straightforward. Ella has a total of $2.16, and we need to ascertain the cost per piece of gum.
It is known that if the gum cost one cent less, she would have acquired three more pieces.
 Currently, with 8 pieces priced at 27 cents each, a reduced price would allow her to have 8.64 pieces. This outcome, even after rounding, is incorrect as it does not yield 11.
 For 9 pieces at 24 cents each, a cheaper price would mean she could have 9.39 pieces, which still does not round to 12, indicating it's incorrect.
 At 16 pieces costing 13.5 cents each, at one cent less, she would acquire 17.28 pieces, which also confirms it's wrong because rounding does not yield 19.
 When purchasing 24 pieces at 9 cents each, with the cheaper price, she could buy 27 pieces, which is valid since 27-24 equals 3.
 Therefore, the correct answer is D) 24
3 0
2 months ago
Read 2 more answers
Which number can each term of the equation be multiplied by to eliminate the fractions before solving? m – negative StartFractio
zzz [12365]

Answer: To remove fractions prior to solving, each term in the equation must be multiplied by 4.

Step-by-step explanation:

Consider the given expression:

-\frac{3}{4}m-\frac{1}{2}=2+\frac{1}{4}m

It is essential to simplify this before attempting to solve it.

Since the denominators differ, identifying the Least Common Denominator (LCD) is necessary.

Break down the denominators into their prime components:

4=2*2=2^2\\2=2

Select 2^2, as it possesses the greatest exponent. Thus:

LCD=2^2=4

Ultimately, to remove the fractions before solving, multiply both sides by 4:

(4)(-\frac{3}{4}m)-(4)(\frac{1}{2})=(4)(2)+(4)(\frac{1}{4}m)\\\\-3m-2=8+m

7 0
3 months ago
Darryl wants to add enough water to 8 gallons of a 10% bleach solution to make a 5% bleach solution. Which equation can he use t
lawyer [12517]

Response:- 0.8/8+x=5/100

Detailed explanation:

6 0
3 months ago
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