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vaieri [72.5K]
3 years ago
8

St 2

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
3 0

Answer:

$5.5

Step-by-step explanation:

6 * N (notebook) + 3 * P (pen) = 27

n = 1.5 +P

6 * (1.5 + P) + 3 * P = 27

9 +6p +3p = 27

9p = 18

p (pen): $2

N (notebook): $3.5

combined cost of 1 pen and 1 notebook: $2 + $ 3.5 = $ 5.5

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The ratio of pianists to violists in the school orchestra is 8:3. If there are 16 pianists, how many violists are there?
zhuklara [117]

Answer:

6 violists

Step-by-step explanation:

8:3 = 16:6

7 0
3 years ago
The diameter of a circle is 10 meters. What is the area of the circle?(use 3.14 for pie and round to the nearest tenth
asambeis [7]

A=78.54

A=1 /4πd2=1 /4·π·10^2≈78.53982m²

Hope this helps

Formulas

A=πr2

d=2r

8 0
3 years ago
What is the domain of the function
Anon25 [30]
The answer is -2,2,3,4
7 0
3 years ago
at the movies, la quinta paid for drinks and popcorn for herself and her two children. she spend twice as much on popcorn as on
jarptica [38.1K]

Answer:

Step-by-step explanation:

let the amount spent on popcorn be x and amount spent on drinks be y

If the total bill paid is  $17.94, then x+y =  $17.94

If she spend twice as much on popcorn as on drinks, then y = 2x

Substitute y = 2x into the original equation

x+y =  $17.94

x + 2x =  $17.94

3x =  $17.94

x =  $17.94/3

x = $5.98

Since y = 2x

y = 2($5.98)

y = $11.96

Therefore she spent  $5.98 on popcorn and $11.96 on drinks

4 0
3 years ago
What is 50,000 times 10 to the 15th
Misha Larkins [42]
Remember property of exponents
(x^m)(x^n)=x^{m+n}
add exponents of same base

ok so

50,000 is 5 times 10^4

so

50000 times 10^15=
5 times 10^4 times 10^15=
5 times 10^{4+15}=
5 times 10^19
8 0
3 years ago
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