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kondaur [170]
3 years ago
13

XYZ Music Store sells new CDs,n, for $ 13.50, and used $6.50 .The store eamed $ 456 revenue last month. The store sold 14 more u

sed CDs than new CDs. Which system of equations represents this scenario?
A.6.5n +13.5U=456;u=n-14
B.13.5n+6.5u=456;u=n+14
C.6.5n +13.5u=456;u+n+14
D.13.5n+6.5u=456;u=n -14
Mathematics
1 answer:
marysya [2.9K]3 years ago
4 0

Answer:

c

Step-by-step explanation:

i did it in a test and i used a calculator

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A town planner is interested in getting some demographic data about the households in the city. The city has four wards with the
UkoKoshka [18]

Answer:

15

Step-by-step explanation:

Population size= 2107+903+1505+1499

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Calculating the sample of ward B by using the stratified random sampling formula:

Stratified Random Sample, np= ( Np / N ) * n

where

np= pth stratum  sample size

Np= pth stratum  population size

N = population  size

n = sample size

Stratified Sample (ward B) = 100 / 6014 * 903 = 15 !

4 0
2 years ago
(4x+5) (3x+1) -3 (x+1)<br>​
ollegr [7]

Answer:

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Step-by-step explanation:

(4x + 5) (3x + 1) -3 (x + 1)

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12x^2 + 4x + 15x +5

Combine like terms

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4 0
2 years ago
If the atomic number of an element is 7 and its mass number is 16, how many neutrons are in the atom's nucleus
Margaret [11]
Number of Neutrons = Atomic mass - Atomic number 
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In short, Your Answer would be 9

Hope this helps!
7 0
3 years ago
6 165.1 159.2 163.5 174.8 173.2 177.6 174.3 164.1 171.4 find the median
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mean= 835.9
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mode= N/A
5 0
3 years ago
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DochEvi [55]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
Read 2 more answers
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