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2 years ago

What is the value of w?

Mathematics

2 answers:

zvonat [6]2 years ago

6 0

Answer:El vatio1 o watt2 (símbolo: W) es la unidad derivada coherente del Sistema Internacional de Unidades (SI) para la potencia. Es igual a 1 julio por segundo (1 J/s).

El vatio, sus múltiplos y submúltiplos son unidades aplicables a cualquier potencia, sea esta mecánica, eléctrica, magnética, acústica, o de cualquier otra índole. Debido a que el vatio es una unidad pequeña, es común expresar la potencia también en kilovatios (kW = 1000 W) o megavatios (MW = 1 000 000 W).

Step-by-step explanation:

Tpy6a [65]2 years ago

5 0

Answer:

w = 10

Step-by-step explanation:

10w + 3w + w + 40 = 180 Combine like terms

14w + 40 = 180 Subtract 40 from both sides

14w = 140 Divide 14 from both sides

w = 10

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It took two people to complete carpeting in 10 days. How many more workers need to be hired to complete the same job in 4 days?

IRISSAK [1]

so two fellows did all the carpeting in 10 days.

now, how long did "1" fellow work only? well, it worked for 10 days.

how long did the other fellow work for? well, it was working alongside the first one, and it was there for also 10 days.

so the two guys working together, really did 10+10 = 20 "days worth of work". So that the whole carpeting job can be done in 20 "days worth of work".

now if we want to finish it in 4 days, 20 ÷ 4 = 5.

so if we hire 5 guys, since each one will do 4 days worth, 5*4 = 20 <- the whole job.

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3 years ago

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A vegetable garden with an area of 200 square feet is to be fertilized. If the length of the garden is 1 foot less than three ti

charle [14.2K]

Ok so I like to go in steps with these questions- first draw a picture and identify your variables.

W=width
L= 3w-1

Now we know that length times width gets us area so we plug in our variables into the area equation.

200 = w(3w-1)

When you foil that equation you end up with a quadratic : 3w^2-w-200 = 0

Either factor that or use the quadratic formula to get
w= 8.33 and w= -8

Since you can't have a negative dimension you need to use 8.33 and plug it back into your length equation.

Final answer:

w= 8.33ft
l= 23.99ft

*Now I simplified the decimals a little bit so you end up with 199.8ft^2 for the area so just add a few decimals on here and there*

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2 years ago

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Leticia charges 8$ per hour to babysit. She babysat Friday night for 4 hours ,and then she babysat again on saturday.She earned

BaLLatris [955]

Leticia babysat on Saturday for 5 hours. She already babysat for 4 hours which makes it (8 x 4) =$32 But she earned $72 so the rest $40 / 8 =5 hours

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3 years ago

You and your sister went to the store. Your mom gave you $35 to buy a few things. The store charges $4 an hour for parking plus

Sav [38]

Answer:6.5

Step-by-step explanation:35-15=20, 20-12=8, 8-1.50=6.5

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2 years ago

Solve the equation <img src="https://tex.z-dn.net/?f=8x%5E2%3D-36" id="TexFormula1" title="8x^2=-36" alt="8x^2=-36" align="absmi

chubhunter [2.5K]

Answer: 4(2x²+9) or $i\frac{3\sqrt{2} }{2}$

Step-by-step explanation:

To solve the equation by factoring, we want to set the equation to zero. In order to have the equation equal to zero, we want to add both sides by 36.

8x²=-36 [add both sides by 36]

8x²+36=0

When it comes to factoring, we want to pull out numbers or variables that are common in each term.

8x²+36=0 [take out a 4 in each term]

4(2x²+9)=0

It may seem that 2x²+9 can be factored further, it actually can't. This tells us that the factored form of the equation is 4(2x²+9)=0.

To solve the equation, we want to find the value of x. We already know the graph does not cross the x-axis because the y-intercept or vertex is (0,9).

4(2x²+9)=0 [divide both sides by 4]

2x²+9=0 [subtract both sides by 9]

2x²=-9 [divide both sides by 2]

x²=-9/2 [square root both sides]

$x=\sqrt{-\frac{9}{2} }$ or $x=i\frac{3\sqrt{2} }{2}$

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3 years ago

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