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Veseljchak [2.6K]
2 years ago
7

use the formula for the area of a trapizoid A=(b₁+b₂/2), where A is area, and b₁ and b₂ are the length of the bases, and h is th

e height, to answer the question how many square feet of grass are there on a trapizoidal field with a height of 75ft and bases of 125ft and 81ft?
Mathematics
2 answers:
11Alexandr11 [23.1K]2 years ago
8 0

Answer:

  • 7725 ft²

Step-by-step explanation:

<u>Use the formula:</u>

  • A = (b₁ + b₂) h / 2

<u>Substitute the values and calculate:</u>

  • A = (125 + 81)*75/2 = 7725 ft²
lisabon 2012 [21]2 years ago
5 0

7725ft²

Answer:

Solution given:

Area =(b₁+b₂)h/2

where A is area, and b₁ and b₂ are the length of the bases, and h is the height

We have

b₁=125ft

b₂=81ft

h=75ft

Now substituting value we get

Area of trapezoid=(125+81)*75/2=7725ft²

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Answer:

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Step-by-step explanation:

* Lets study how to make an equation of the line from two point

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- The form of the equation is y = mx + c, where m is the slope of the

 line and c is the y-intercept

- The rule of the slope is m = (y2 - y1)/(x2 - x1)

- The y-intercept means the line intersect the y-axis at point (0 ,c)

* Now lets solve the problem

∵ The line passes through points (-3 , 13) and (4 , -1)

- Let (-3 , 13) is (x1 , y1) and (4 , -1) is (x2 , y2)

∵ m = (y2 - y1)/(x2 - x1)

∴ m = (-1 - 13)/(4 - -3)

∴ m = (-14)/7 = -2

- Lets write the form of the equation

∵ y = mx + c ⇒ substitute the value of m

∴ y = -2x + c

- To find the value of c use one of the two points to substitute the

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∵ The line passes through (4 , -1)

∴ -1 = -2(4) + c

∴ -1 = -8 + c ⇒ add 8 to both sides

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* The equation of the line is y = -2x + 7

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2 years ago
Charmaine's Coffee shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Charmaine $5.75 per pound, a
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3 years ago
1. Pilar and her sister Marisol live near the beach. Pilar has 80 seashells in her collection when Marisol started collecting se
jeka94

Answer:

a. 20x > 10x + 80

b.  •20x > 10x + 80

• Subtract 10x from both sides: 20x -10x > 10x + 80 - 10x

• Simplify: 10x > 80

• Divide both sides by 10:   10x/10 > 80/10

• Simplify: x > 8

Step-by-step explanation:

10x + 80 = number of seashells Pilar has.

20x = number of seashells Marisol has.  

answer for a:  20x > 10x + 80

answer for b: 20x > 10x + 80

• Subtract 10x from both sides: 20x -10x > 10x + 80 - 10x

• Simplify: 10x > 80

• Divide both sides by 10:   10x/10 > 80/10

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The angle in the dilated figure is the same as the original angle in each case, a fact that should be confirmed by the way the answer choices are shown.

∠A = ∠A'

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∠A = 4·11 -4 = 40 . . . . . . doesn't match any offered choice

___

∠B = ∠B'

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∠C = ∠C'

... 8x -13 = 6x +9

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... ∠C = 6·11 +9 = 75

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Answer:

Upper left corner

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