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VashaNatasha [74]
3 years ago
15

A company has two large computers. The slower computer can send all the company's email in 40 minutes. The faster computer can c

omplete the same job in 10 minutes. If both computers are working together, how long will it take them to do the job?
Mathematics
1 answer:
ladessa [460]3 years ago
5 0
X = 40 min 
y = 10 min 

x = 40/60 h --> x = 4/6 h --> x = 2/3 h
y = 10/60 h --> y = 1/6 h
x + y = 2/3 - 1/6 
x+y = 4/6 - 1/6
x+y = 3/6 h = 3*60'/6 = 3*10 = 30 min
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3 years ago
2 to the one fourth minus 3 to the fifth
Sauron [17]
2^4 = 16
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3 0
4 years ago
Mrs.Jenning had 5/7 gallon of paint. She gave 1/7 gallon each to some students. How many students received paint if Mrs.Jennings
yKpoI14uk [10]

Answer:

The number of students who received the paint=5 students

Step-by-step explanation:

Step 1: Determine amount given to each student

Quantity per student=1/7 gallon per student

Step 2: Determine the total amount of paint Mrs. Jennings had

The total quantity of paint Mrs. Jennings is:

Initial quantity of paint=5/7 gallon

Step 3: Calculate number of students who received the paint

The number of students who received the paint can be expressed as;

Initial quantity of paint=Quantity per student×number of students

where;

Initial quantity of paint=5/7 gallons

Quantity per student=1/7 gallons

number of students=n

replacing;

5/7=(1/7)×n

n=(5/7)×7

n=5

The number of students who received the paint=5 students

4 0
3 years ago
Andrew is building a ramp for a snowboarding competition. The rules of the competition say that the height of the ramp must be 8
lara31 [8.8K]

Answer:

The length of the third piece of the ramp is;

D. 9.24 feet

Step-by-step explanation:

The given parameters are;

The height of the ramp = 8 feet

The angle between the piece that forms height and the base = 90°

The angle formed by the third piece connecting the height of the ramp to the furthest point and the 8 foot piece = 30°

Let 'y' represent the 8-foot piece forming the height, and let 'r' represent the third piece, by trigonometric ratio, we have;

cos(30^{\circ}) = \dfrac{y}{r}

Therefore, we get;

cos(30^{\circ}) = \dfrac{8}{r}

r = \dfrac{8 \ feet}{cos(30^{\circ})} = \dfrac{8 \ feet}{\dfrac{\sqrt{3} }{2}  }  = \dfrac{16 \cdot \sqrt{3} \ feet}{3}  \approx 9.24 \ feet

The length of the third piece, r ≈ 9.24 feet

3 0
3 years ago
Solve by using Elimination.
Alexxx [7]
<h3>Answer:</h3>

It is (3, -1)

<em>Hope this helped :)</em>

6 0
3 years ago
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