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uysha [10]
3 years ago
14

The time t (in hours) that it takes a group of volunteers to build a

Mathematics
2 answers:
weeeeeb [17]3 years ago
5 0

It will take 9 hours

Oduvanchick [21]3 years ago
5 0

Answer:

8 hours

Step-by-step explanation:

10 × 12 = 15 × t

t = 8

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Solve for (0,2π]<br> 2cos ß * sin ß = cos ß
Temka [501]

Given :

An equation, 2cos ß sin ß = cos ß .

To Find :

The value for above equation in (0, 2π ] .

Solution :

Now, 2cos ß sin ß = cos ß

2 sin ß = 1

sin ß = 1/2

We know, sin ß = sin (π/6)  or sin ß = sin (5π/6) in  ( 0, 2π ] .

Therefore,

\beta = \dfrac{\pi}{6}\ or\ \beta = \dfrac{5\pi}{6}

Hence, this is the required solution.

4 0
2 years ago
The probability of event A occurring is 3/5, while the probability of event B occurring is 2/7. If the probability of events A a
Harman [31]

Answer:

I think they are independent

Step-by-step explanation:

7 0
3 years ago
Kinda need some help
aksik [14]

Answer:

1) x=10

2) x=6

3) x=13

Step-by-step explanation:

1) 15x-17+4x+7=180

19x-10=180

19x=190

x=10

2) 13x+5=16x-13

5+13=16x-13x

18=3x

x=6

3) 9x+7=11x-19

7+19=11x-9x

26=2x

x=13

6 0
3 years ago
The length of a rectangle is 5 inches more than it's width, x. The area of a rectangle can be represented by the equation.x^2+5x
Digiron [165]

Answer:

the width=15; the length=20

Step-by-step explanation:

1. to solve the given equation: x²+5x-300=0;

x₁= -20; x₂=15, where 'x' can be only positive value. It means x=15;

2. according to the condtition the length is more, it means 15+5=20.

3. the width is x=15; the length is 20.

8 0
3 years ago
Which inequality represents “35 is less than 3 times 4 more than a number”
Natasha2012 [34]
I believe it would be 3×4x<35
6 0
3 years ago
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