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Flura [38]
3 years ago
7

The amount of time t (in hours) it takes to complete a certain job varies inversely with the number of workers, w. The constant

of variation is 28. Find the time it takes to complete the job when the number of workers is 16.
A.1.75 hours

B.0.57 hours

C.12 hours

D.448 hour
Mathematics
1 answer:
Vlad [161]3 years ago
5 0

Answer: should be A: 1.75 hours

Step-by-step explanation: divide 28/16 to give you 7/4, then you should turn this into a decimal which gives you 1.75

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I really need help with these three questions, urgent!
kow [346]

6.

Intersecting chords:

RT x ST = PT x TQ

2 x 6 = 3 x TQ

12 = 3TQ

TQ = 12/3

TQ = 4

7.

AD = 90 -BE = 90-18 = 72

ADE = 180. DE = 180 - AD = 180-72 = 108

AE = 180.  AB = 180-18 = 162

DE = 108

BD = BE +DE = 18 + 108 = 126

DAB = 72 +   162 = 234

ADE = 90 degrees

8.

AB^2 = BC* (BC +x)

8^2 = 2 * (2 +x)

64 = 4 + 2x

60 = 2x

X = 60/2

X = 30

6 0
3 years ago
<img src="https://tex.z-dn.net/?f=8%20-%20%20%7B2%7D%5E%7B2%7D%20%20%2B%203%20-%205" id="TexFormula1" title="8 - {2}^{2} + 3 -
Vlad1618 [11]

The answer should be 8+[(2^2)+3]-5

Hope this helps!


3 0
3 years ago
Abby earns $9.95 per hour doing landscape work. She worked 8.5 hours last week.
Salsk061 [2.6K]

Answer:

$84.58

Step-by-step explanation:

You would do 9.95 times 8.5 which gives you 84.575 which in money case you round to two decimal places you keep the 5 but 7 you round to 8 because "5 or more you add one more"

Hope this helps

8 0
2 years ago
A large rock has a mass of 9,000 grams. What is the mass of the rock in kilograms ?
katovenus [111]
The mass of the rock in kg is 90,000 kg
4 0
3 years ago
Read 2 more answers
Y=<br> Pls help solve for
miss Akunina [59]

Answer:

y=39\degree

Step-by-step explanation:

The given triangle is a right angle triangle .

The known sides of the triangle that is opposite to angle y is 8 units while the side adjacent is 10 units.

The value of y can be calculated using the tangent ratio.


\tan(y)=\frac{8}{10}

We solve for y to get,

y=arctan(\frac{4}{5})

We evaluate to obtain,

y=38.66


y=39\degree to the nearest degree


8 0
3 years ago
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