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vekshin1
3 years ago
11

All members of a construction crew work at the same pace. Four of them working together can pour a foundation in 32 hours. How m

any hours would the job take if the number of workers: increased 4 times
Mathematics
1 answer:
Mariana [72]3 years ago
3 0

Answer:

16 hrs

Step-by-step explanation:

4 of them doing it in 32 hrs is the equivalent to 4/8hrs (32hrs) days 32÷ 4 = 8

8 of them doing it in 16hrs would be the equivalent to 2/8 hrs( 16hrs) days

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PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!!
Tresset [83]

The measure of the angle R is m \angle R=69.4

Explanation:

It is given that the lengths of the triangle are PQ = 8 and QR = 3

To find the angle of R using the opposite and adjacent side, we shall use the tangent formula.

\tan \theta=\frac{o p p}{a d j}

where opp = 8 and adj = 3

Thus, substituting these values in the formula, we get,

\tan \theta=\frac{8}{3}

Multiplying both sides by tan^{-1}, we get,

\theta=tan^{-1} (\frac{8}{3})

Dividing, we get,

\theta=69.44

Rounding off to the nearest tenth, we have,

\theta=69.4

Thus, the measure of the angle R is m \angle R=69.4

7 0
3 years ago
Find f(x)=(x^2)+x+39, when x=50. (don't write a comma in answer.)
GREYUIT [131]

f(x) = x² + x + 39

f(50) = 50² + 50 + 39

f(50) = 2500 + 89

f(50) = <u>2589</u>

7 0
3 years ago
The points (10, 10) and (0,8) fall on a particular line. What is its equation in slope-intercept
vovikov84 [41]

Answer:

y = 1/5x + 8

Step-by-step explanation:

slope = (change in y)/(change in x)

Slope = (8 -10)/(0 -10)

Slope = -2/-10

Slope = 1/5

Use y = mx + b   substitute m = 1/5  and (0, 8)

      8 = 1/5(0) + b

      8 = 0 + b

      8 = b

The equation of the equation  y = 1/5x +8

 

7 0
3 years ago
A man is planning to take his vacation in three weeks. He determines that there is a 15% chance of rain on any given day in that
mixas84 [53]
Answer: 15%

Explanation: if it has 15% chance of rain on any given day so that’s 15% chance on every day that week and I’d think about rescheduling that vacation for another week
4 0
3 years ago
What time iss it 190 minutes after 9:22 pm?​
Katarina [22]

Answer: 12:32 AM (because its midnight)

Step-by-step explanation:

60 min = 1 hour

60 X 3 = 180

180m + 10m = 190m

= 3 hours 10 min

3:10 + 9:22 = 12:32

3 0
3 years ago
Read 2 more answers
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