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Aneli [31]
3 years ago
6

Which expression is equivalent to (81x4y16) for all positive values of x and y?

Mathematics
1 answer:
Law Incorporation [45]3 years ago
4 0

Answer:

4x-3y is equivilent

Step-by-step explanation:

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About 40% of students own a cat

Step-by-step explanation:

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A)0.76×0.004<br><br>b)0.078÷0.5<br><br>c)0.834+0.79<br><br>d)0.0034-0.0078<br>​
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3 years ago
What does 2π/3 equal and cos2π/3 equal?
777dan777 [17]

Answer:

Step-by-step explanation:

2π/3 radians is equivalent to

  2π       180°

-------- * ---------- = 120°

    3        π rad

This angle (120°) is 30° past 90°.  The 'opposite side' of the triangle formed by this ray of length 1 is √3 and the 'adjacent side' is 1.  

                                                                 adj side          -1

cos 120° is in Quadrant II.  cos 120° = --------------- = ---------

                                                                       hyp             2

                         √3

and sin 120° = --------

                            2

8 0
3 years ago
A ratio of angel fish at a store is 5:4. the ratio of angel fish to goldfish is 4:3 . There are 60 clown fish at the pet store
dexar [7]

Answer:

an i oop

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
You are to give an injection of a drug. The dosage is 0.4 mg per kilogram of bod The concentration of the drug in vial is listed
shusha [124]

Answer:

We inject 60.9628 milliliters of dosage.

Step-by-step explanation:

Given : You are to give an injection of a drug. The dosage is 0.4 mg per kilogram of bod The concentration of the drug in vial is listed as 500 ug/ml. The patient's chart Hosts weight as 168 pounds.

To find : How many milliliters (= cc) are you to inject?

Solution :

We know that,

1 pound = 0.453592 kg,

Patient's weight = 168  pounds

Patient's weight in kg =168\times 0.453592=76.203456  kg

The dosage is 0.4 mg per kilogram of bod.

So, dosage of patient weight = 0.4 \times 76.2035\ mg = 30.4814\ mg

We know,  1 micro gram = 0.001 mg

Concentration of drug is given by,

500\ \text{micro grams/ml}= 500\times 0.001\ \text{mg/ml} = 0.5\ \text{mg/ml}

Now we are supposed to find milliliters inject,

So, milliliters of dosage required to inject is

d= \frac{30.4814}{0.5} = 60.9628

Therefore, We inject 60.9628 milliliters of dosage.

3 0
4 years ago
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