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Margarita [4]
3 years ago
11

Three over four times one over five

Mathematics
2 answers:
kobusy [5.1K]3 years ago
6 0

Answer:

(3/4)*(1/5) is equal to 0.15

kramer3 years ago
6 0

Answer:

Use criss-cross

3/4 x 1/5

3 x 5 =15

4 x 1 = 4

Add 15 + 4/20 (20  is common denominator)

Answer:  19/20

find common denominator (20)

Step-by-step explanation:

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Speed = distance / time

Time = distance/ Speed

Distance = Speed x time

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Una alberca, tiene las siguientes dimensiones: 15 metros de largo, 4 metros de ancho y una profundidad de 1.8 metros. Si se dese
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Answer:

please transalate

porfavor transalate

Step-by-step explanation:

7 0
2 years ago
A lake polluted by bacteria is treated with an antibacterial chemical. Aftertdays, thenumber N of bacteria per milliliter of wat
jeyben [28]

Answer:

N(1)=50 is a minimum

N(15)=4391.7 is a maximum

Step-by-step explanation:

<u>Extrema values of functions </u>

If the first and second derivative of a function f exists, then f'(a)=0 will produce values for a called critical points. If a is a critical point and f''(a) is negative, then x=a is a local maximum, if f''(a) is positive, then x=a is a local minimum.  

We are given a function (corrected)

N(t) = 20(t^2-lnt^2)+ 30

N(t) = 20(t^2-2lnt)+ 30

(a)

First, we take its derivative

N'(t) = 20(2t-\frac{2}{t})

Solve N'(t)=0

20(2t-\frac{2}{t})=0

Simplifying

2t^2-2=0

Solving for t

t=1\ ,t=-1

Only t=1 belongs to the valid interval 1\leqslant t\leqslant 15

Taking the second derivative

N''(t) = 20(2+\frac{2}{t^2})

Which is always positive, so t=1 is a minimum

(b)

N(1)=20(1^2-2ln1)+ 30

N(1)=50 is a minimum

(c) Since no local maximum can be found, we test for the endpoints. t=1 was already determined as a minimum, we take t=15

(d)

N(15)=20(15^2-2ln15)+ 30

N(15)=4391.7 is a maximum

7 0
3 years ago
If f(x)=6x^2-4 what is f(-1)
Nana76 [90]

Answer:

2

Step-by-step explanation:

3 0
2 years ago
You invest $1000 in a friend's new business. If the business and its value are
Wewaii [24]

Answer:

y = 1000 x .30 (+ 1000)

Step-by-step explanation:

since it grows by 30%, you multiply .30 (the decimal version of 30%) and 1000 (your initial amount) to find how much it grows. Then you add $1000 at the very end, because that is how much you started with.

8 0
2 years ago
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