3 years ago

Let x=number of cds and y=number of dvds

1 answer:

6 0

X + y = 40.....multiply by -4
4x + 6y = 180
-------------------
-4x - 4y = -160 (result of multiplying by -4)
4x + 6y = 180
------------------add
2y = 20
y = 20/2
y = 10 <===

x = 30

You might be interested in

Help this is my exit ticket HURRY LOTS OF POINTS

lisov135 [29]

Answer:

The answer for this question ( ur exit ticket ) is C .

6 0

2 years ago

Read 2 more answers

Can anyone help me thanks

Romashka-Z-Leto [24]

Answer:

grams

Step-by-step explanation:

kilometers is for length, milugrams are too small and millimeters dosent make sense

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=%288%20%2B%207i%29%20%2B%20%287%20-%2031%29%20" id="TexFormula1" title="(8 + 7i) + (7 - 31) "

Angelina_Jolie [31]

assuming you meant to simplify above,

$\bf (8+7i)+(7-3i)\implies \stackrel{\textit{adding like terms}}{15+4i}$

6 0

3 years ago

Read 2 more answers

Que es un ángulo obtuso

erik [133]

Answer:

naniiiiiiiiiiiiiiiiiiiiii

6 0

2 years ago

Read 2 more answers

PLEASE HELP WILL GIVE BRAINLIEST

Alexxandr [17]

N^2.....because this is the product of n and itself, not the sum

4 0

3 years ago

Read 2 more answers