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alina1380 [7]
2 years ago
12

Sheryl has a Christmas lighting project. She is going to put lights around outside of 15 windows with a height of 4 feet and a w

idth of 2 feet. She also wants to put lights around 3 garage doors that are 9 ft wide and 9 ft long. How many feet of Christmas lights will be needed
Mathematics
1 answer:
Monica [59]2 years ago
5 0
She will need 288 ft of Christmas lights

Step by Step:
First we find how many feet is needed to go around 1 window. We do this by adding up all four of its sides.
4+4+2+2= 12
Because there are 15 windows be multiply the feet needed for 1 window by 15.
12•15=180
Repeat the first two steps for the garage doors to find that she needs 108ft of lights for 3 garage doors and add the feet needed for the windows to the feet needed for the garages
180+108=288
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Option B) 3 hours is the time spent by Jenna on the e-mail this week.

<u>Step-by-step explanation:</u>

Jenna spent 30 hours on the computer this week.

The amount of time she spends on computer to work on various fields in given in the pie-chart.

This 30 hours represents her 100% work on computer.

From the figure shown,

She spent 10% of her total work on e-mail.

Therefore, 10% of 30 is the work done in hours by her on e-mail.

⇒ (10/100) × 30

⇒ 0.1 × 30

⇒ 3 hours

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7 0
3 years ago
1. What is the solution to the system of equations?
inysia [295]
<span> Use the substitution method to justify that the given system of equations has no solution.</span>
4 0
3 years ago
Read 2 more answers
Willy Wonka has 2 candies, Wonka bars and Everlasting Gobstoppers. Both have both natural sugar and sucrose in them. Each Wonka
love history [14]

Answer:

Wonka bars=3 and  Everlasting Gobstoppers=24

Step-by-step explanation:

let the wonka bars be X

and everlasting gobstoppers be Y

the objective is to

maximize 1.3x+3.2y=P

subject to constraints

natural sugar

4x+2y=60------1

sucrose

x+3y=75---------2

x>0, y>0

solving 1 and 2 simultaneously we have

4x+2y=60----1

x+3y=75------2

multiply equation 2 by 4 and equation 1 by 1 to eliminate x we have

 4x+2y=60

 4x+12y=300

-0-10y=-240

10y=240

y=240/10

y=24

put y=24 in equation 2 we have'

x+3y=75

x+3(24)=75

x+72=75

x=75-72

x=3

put x=3 and y=24 in the objective function we have

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1.3(3)+3.2(24)=P

3.9+76.8=P

80.7=P

P=$80.9

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3 years ago
Find the surface area of the regular pyramid. _____sq. cm.
snow_tiger [21]
Ashes2049, are you good at geometry?
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3 years ago
Radium-226 has a half life of 1622 years. If you start off with a 200
sweet [91]

Answer:

≈23.6 kg left.

Step-by-step explanation:

For determining this, we can simply use an exponential decay equation representing this scenario:

y= a(0.5)^{\frac{t}{h} }

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t: the amount of time

h: the half life

Now, substitute the numbers into the equation:

y=200(0.5)^{\frac{5000}{1622} }

Now, solve this equation:

y=220(0.5)^{3.08}

Use a calculator to solve for y:

y= 200(0.118)

y≈23.6 kg left.

3 0
3 years ago
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