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3 years ago

5

Please help for math in 2 min or less

1 answer:

yuradex [85]3 years ago

6 0

Pretty sure the area is 9

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A rain gutter is made from sheets of aluminum that are 20 inches wide by turning up the edges to form right angles. Determine th

Mice21 [21]

<span>For the answer to this question,

Let x = depth of the gutter
then
18 - 2x = width of the gutter
Cross section area
A = depth x width

</span><span> = x(18 - 2x)
A = 18x - 2x^2
:
Axis of symmetry will give x value for max area:

x = -b/(2a)
x = -18/(2x(-2))

x = 4.5 inches is the depth for max area

</span><span>Max area: 4.5 * 9 = 40.5 sq/in

I hope my answer helped you.</span>

3 0

3 years ago

Solve the second equation.<br>2x - y = 8<br>First, solve for (-y).<br>--y =<br>

kicyunya [14]

Answer:

$-y=-2x+8\\y=2x-8$

Step-by-step explanation:

To solve, first subtract 2x from both sides.

$2x-y=8\\-y=-2x+8$

You appear to want the solution for -y, so I've included it. Given that you also want the solution for y, divide both sides by -1.

$-y=-2x+8\\y=2x-8$

5 0

3 years ago

CAN I HAVE HELLLLLLLPPPPPPP

uranmaximum [27]

Step-by-step explanation:

6t-13t+18t6t-13t+18t6t-13t+18t

4 0

3 years ago

A one day trip to new york, mary spent $6.25 for breakfast and 8.95 for lunch. She can spend no more than an average of $8.50. H

zysi [14]

Mary spent $10.30 on dinner to stay in budget.

Step-by-step explanation:

Amount spent on breakfast = $6.25

Amount spent on lunch = $8.95

Amount spent on dinner = x

Average = $8.50

Average = $\frac{Sum\ of\ values}{No.\ of\ values}$

$8.50 = \frac{6.25+8.95+x}{3}\\8.50=\frac{15.20+x}{3}$

Multiplying both sides by 3

$8.50*3=\frac{15.20+x}{3}*3\\25.50=15.20+x\\25.50-15.20=x\\x=10.30$

Mary spent $10.30 on dinner to stay in budget.

Keywords: Average, addition

Learn more about addition at:

#LearnwithBrainly

7 0

4 years ago

Each of 7 students reported the number of movies they saw in the past year. Here is what they reported. 15,11,15,18,13,4,5. Find

mars1129 [50]

Answer:

11.6

Step-by-step explanation:

Add all numbers together and divide by 7.

7 0

3 years ago