Answer: - 5x = 8
Step-by-step explanation:
Subtracting equation 2 from 1 implies
- 2x - 3x + 7y - 7y = 10 - 2
- 5x = 8
If solving for x , then
x = -8/5
The nth term (an) of the arithmetic sequence is calculated through the equation,
an = a1 + (n - 1)(d)
where an is the nth term, a1 is the first term, n is the number of terms, and d is the common difference. Substituting the known values,
a72 = 5 + (72 - 1)(3)
a72 = 218
Answer:
5-1/2 = 4 1/2 4 1/2= 4.5. and 4.5 is not greater then 30, thus this statement is false
Step-by-step explanation:
PART A
s = <span>the number of packets of strawberry wafers ;
c = </span><span>the number of packets of chocolate wafers ;
3 </span>× s + 1 × <span>c = 30 ;
s + c = 22 ;
PART B
</span>The method of solving "by substitution"<span> works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.
</span>
c = 30 - 3s;
s + ( 30 - 3s ) = 22;
30 - 2s = 22;
30 - 22 = 2s;
8 = 2s;
s = 4 ;
c = 30 - 12 ;
c = 18 ;
Answer: Sasha
Step-by-step explanation:
carlos- 54 divided by 25 equals 2.25 dollars for each gallon
sasha- 31.25 divided by 15 equals 2.083333(3 repeats)
They are both really close on price, but sasha's is cheaper