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Sav [38]
3 years ago
11

Assign two variables for each problem, and write the equations. Do not solve.

Mathematics
2 answers:
hichkok12 [17]3 years ago
5 0
1. x represents one battery, y represents the other battery x+y=6.5 x-y=2.5 2. x represents the number of small drinks sold, y represents the number of other size drinks sold x+y=230 x+1.5y=285
Luba_88 [7]3 years ago
5 0
A = first battery type
b = second battery type

a + b = 6.5 V
a = ( 6.5 V ) - b

b - a = 2.5 V

b - (6.5 - b) = 2.5
2b - 6.5 = 2.5
2b = 9.0
b = 4.5 V
a = 6.5 - 4.5
a = 2.0 V


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What describes the components of the arithmetic sequence formula?
AVprozaik [17]
a_{n}=a_{1}+d(n-1)

an is the 'nth' term
a1 is first term
d=common difference (found by doing a_{n}-a_{n-1})
n=numerical representation of which term
6 0
4 years ago
How do you simplify 7x×4y×2y^2
belka [17]
The answer is: 56xy³
_______________________________
Explanation:
_______________________________
Find the "like terms"; which are: 
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"4y" and "2y<span>²"
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The remaining term is: "7x".
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The problem is a "multiplication problem" :
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7x * 4y * </span>2y² ; so start by multiplying the "like terms" :
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4y * 2y</span>² = 8y<span>³
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Then the remaining term is "7x";
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7x * 8y³  = 56xy³ ; which is our answer:
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6 0
3 years ago
Twice the sum of a number and 5 equals 9 as a equation
ziro4ka [17]
Hello!

I believe it looks like this..

2*x+5=9

Btw, x = 3 is your answer if you're wondering..

Hope this helps! ☺♥
7 0
4 years ago
Please provide the working outs as well as the answer. Many thanks
lana [24]
\dfrac{3w-5}{2}=w-3\ \ \ |multiply\ both\ sides\ by\ 2\\\\\not2^1\cdot\dfrac{3w-5}{\not2_1}=2\cdot w-2\cdot3\\\\3w-5=2w-6\ \ \ |add\ 5\ to\ both\ sides\\\\3w-5+5=2w-6+5\\\\3w=2w-1\ \ \ \ |subtract\ 2w\ from\ both\ sides\\\\3w-2w=2w-2w-1\\\\\boxed{w=-1}

4 0
4 years ago
Please answer and explain
sashaice [31]
8=2*2*2=2^3
32=2*2*2*2*2=2^5
<span>[8^(2/3)] / [32^(2/5)] = [</span>(2^3)^(2/3)] / [(2^5)^(2/5)] =
= [2^(3*2/3)] / [2^(5*2/5)]= [2^2] / [2^2] = 4/4 = 1
Answer: 1
4 0
3 years ago
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