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2 years ago

The expression below represents the perimeter, in feet, of Manual’s garden.

Mathematics

1 answer:

agasfer [191]2 years ago

6 0

a) Shawn's error was that he Multiplied 15 by 2x only. He didn't Multiply 15 by 7

b) The difference, in square feet, between the actual area of Shawn’s garden and the area found using his expression is given as 98 square feet

<h3>What is the perimeter?</h3>

The perimeter is defined as the sum of all the sides of the figure. Now we have The area in, square feet, of Shawn’s garden is found be calculating 15(2x + 7). Shawn incorrectly says the area can also be found using the expression 30x + 7.

The correct area =15(2x + 7).

= 30x + 105 square feet

The error in Shawn’s expression is

= 15(2x + 7)

= 30x + 7 square feet

Shawn's error was that he Multiplied 15 by 2x only. He didn't Multiply 15 by 7

The difference, in square feet, between the actual area of Shawn’s garden and the area found using his expression is given as

30x + 105 square feet - 30x + 7 square feet

= 30x + 105 - (30x + 7)

= 30x - 30x + 105 - 7

= 98 square feet

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Step-by-step explanation:

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3 years ago

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Shkiper50 [21]

Answer:

Line A m = 2

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Step-by-step explanation:

1. Choose two points from each line.

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3. Check for negative reciprocals

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Point 1 (1, 1) x₁ = 1 y₁ = 1

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Substitute the information into the formula

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Line B:

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The negative reciprocal of a number is switching its top and bottom fraction, then changing the negative/positive.

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3 years ago

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3 years ago

Please help, this chapter was on derivatives...

Usimov [2.4K]

<h3>Answer: ds/dt = 11</h3>

================================================

Work Shown:

Before we can use derivatives, we need to find the value of s when (x,y) = (15,20)

s^2 = x^2+y^2

s^2 = 15^2+20^2

s^2 = 225+400

s^2 = 625

s = sqrt(625)

s = 25

-----------

Now we can apply the derivative to both sides to get the following. Don't forget to use the chain rule.

s^2 = x^2 + y^2

d/dt[s^2] = d/dt[x^2 + y^2]

d/dt[s^2] = d/dt[x^2] + d/dt[y^2]

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Side note: The information t = 40 is never used. It's just extra info.

8 0

3 years ago

20 points!! Pls help there will also be a part two

statuscvo [17]

the height of the poster must be multiplied by the ratio which is 1 to 2.5 which is 40 cm.

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3 years ago