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umka2103 [35]
3 years ago
6

Find the number, if 2.5 of it is 0.75

Mathematics
1 answer:
garri49 [273]3 years ago
8 0

Step-by-step explanation:

Let number be X

Therefore 2.5 of X = 0.75

X = 0.75/2.5

= 0.3

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Simplify x^2-4x+4/x^2-4
MatroZZZ [7]

Answer:

x2 - 4x - 4

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    x - 2  

Step-by-step explanation:

4 0
2 years ago
Explain how Sergio use three lengths of a ribbon 2 ½ feet long to wrap packages. How many feet of ribbon did he us
andreyandreev [35.5K]

Answer:

rate this 5 stars or your gay

Step-by-step explanation:

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2 years ago
Modeling Exponential Growth and Decay In Exercises 119 and 120, Find the exponential function
Lubov Fominskaja [6]

Answer:

There is no exponential function passing through (1,1) and (5,5).

Step-by-step explanation:

We have the following exponential function

y = Ce^{kt}

The function passes through these two points:

(1,1): This means that when t = 1, y = 1

(5,5): This means that when t = 5, y = 5.

So

(1,1)

y = Ce^{kt}

Ce^{k} = 1

e^{k} = \frac{1}{C}

(5,5)

y = Ce^{kt}

5Ce^{k} = 1

Ce^{k} = \frac{1}{5}

From above, we have that:

e^{k} = \frac{1}{C}

C\frac{1}{C} = \frac{1}{5}

1 = \frac{1}{5}

1 cannot be equal to 1/5, so this is wrong.

This means that there is no exponential function passing through (1,1) and (5,5).

5 0
3 years ago
If the 897 step stairwell has 50 landings, how many steps would be between landings
guapka [62]

Answer:

17.94

I think you would do 897 divided by 50. Tell me if im wrong.

8 0
2 years ago
A man standing on a lighthouse at a height of 124 feet sights two boats directly in front of him. One is at an angle of depressi
Ksivusya [100]

Answer:

125\ ft

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

In the right triangle ABC find the length side BC

we know that

tan(62\°)=\frac{124}{BC}

BC=\frac{124}{tan(62\°)}

step 2

In the right triangle ABD find the length side BD

we know that

tan(33\°)=\frac{124}{BD}

BD=\frac{124}{tan(33\°)}

step 3

we know that

The distance between the two boats is the length side CD

CD=BD-BC

substitute the values  

CD=\frac{124}{tan(33\°)}-\frac{124}{tan(62\°)}=125\ ft

5 0
3 years ago
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