1 year ago

PLEASE HELP ME I WILL GIVE POINTS

Mathematics

1 answer:

Brrunno [24]1 year ago

5 0

Answer:

1) 69.08

2) 90

Step-by-step explanation:

Hope this helps!

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A washer and a dryer cost $664 combined. The washer costs $86 less than the dryer. What is the cost of the dryer?

andreyandreev [35.5K]

Answer:

The dryer is 375 dollars

Step-by-step explanation:

The equation would be

664=(D)+(D-86) or

664=(375)+(375-86)

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2 years ago

What is the weight of the plane with 81 gallons of fuel in its tanks?

JulijaS [17]

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2 years ago

7x + 5 = 3x - 15 solve for x

Digiron [165]

7x +5 = 3x -15

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2 years ago

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The function f(x)=-(x-3)^2 +9 can be used to represent the area of a rectangle with the perimeter of 12 units, as a function of

Ivenika [448]

Maximum area of the rectangle is $9cm^{2}$

Explanation:

Considering the dimensions to be in cm

$f(x) = -(x-3)^{2} +9\\f(x) = -(x^{2} +9 - 6x)+9\\f(x) = -x^{2} +6x\\f'(x) = -2x+6\\-2x+6 = 0\\2x=6\\x=3cm\\\\$

Putting the value of x = 3

$Perimeter = 2(x+b)\\12 = 2(3+b)\\6 = 3+b\\b= 3cm$

$Area of rectangle = x X b\\ = 3 X 3\\ = 9cm^{2}$

Therefore, maximum area of the rectangle is $9cm^{2}$

7 0

2 years ago

Measure of Angle 1 is 5x. Measure of Angle 3 is x-24. What is the measure of Angle 1?

olga55 [171]

Answer:

The answer to your question is: 30°

Step-by-step explanation:

Data

m∠ 1 = 5x

m∠ 3 = x - 24

Process

m ∠ 1 = m ∠ 3 because they are vertical angles

5x = x - 24

5x - x = 24

4x = 24

x = 24 / 4

x = 6

Angle 1 = 5(6)

= 30°

4 0

2 years ago