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Papessa [141]
4 years ago
8

Whats the surface area of a cylinder with height of 12in.and the radius is 4in​

Mathematics
1 answer:
emmainna [20.7K]4 years ago
7 0

Answer:

401.92 in²

Step-by-step explanation:

S.A. = 2πr²+2πrh

S.A. = 2π4²+2π4·12

S.A. = 100.48 + 301.44

S.A. = 401.92 in²

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8/17 = y/7
STALIN [3.7K]

\frac{8}{17} = \frac{y}{7}

17y=56

y=3.3

4 0
3 years ago
I don’t understand this
fomenos
Replace x with 3 in the equation to get:
7^2/ 3^2 -2

7^2 changes to 49 and 3^2 changes to 9:
49/9-2

Simplify 9-2 to 7:
49/7

Divide 49 by 7:
7










3 0
3 years ago
Read 2 more answers
What is the value of x? Enter your answer in the box. x = A triangle with midsegment parallel to the base. the left side is labe
inessss [21]
A segment is only a "midsegment" if it connects midpoints. When labels above and below are 9 and 72, it is clearly not a midsegment. However, because it is parallel to the base, segments above and below on one side are proportional to those in similar positions on the other side.

72/9 = 56/(3x -20)

We can multiply by (3x -20)/8 to get

3x -20 = 7
3x = 27
x = 9
7 0
4 years ago
Read 2 more answers
Shawntee has 21 coins all of them nickel and dimes that are worth $1.70. Write a system of equations and splve
Kipish [7]
N+d=21
5n+10d=170

so

multiply first equation by -5 and add to other one

-5n-5d=-105
<u>5n+10d=170 +</u>
0n+5d=65

5d=65
divide both sides by 5
d=13

sub back


n+d=21
n+13=21
minus 13 both sides
n=8




8nickles
13 dimes
8 0
3 years ago
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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