Eliminate x's by adding te 2 equations
add them
-2x+15y=24
<u>2x+9y=24 +</u>
0x+24y=48
24y=48
divide both sides by 24
y=2
sub back
2x+9y=24
2x+9(2)=24
2x+18=24
minus 18 both sides
2x=6
divide 2
x=3
x=3
y=2
(x,y)
(3,2)
Answer:1
Step-by-step explanation:
Answer: the interest rate is 8.3%
Step-by-step explanation:
The formula for determining simple interest is expressed as
I = PRT/100
Where
I represents interest paid on the amount of money deposited.
P represents the principal or amount of money deposited.
R represents interest rate
T represents the duration in years.
From the information given,
P = 800
R = 1000 - 800 = $200
T = 3 years
Therefore,
200 = (800 × R × 3)/100
200 = 24R
R = 200/24
R = 8.3%
Answer:
about 32,000
Step-by-step explanation:
You are being asked to evaluate the quartic for x=7.
f(7) = (((-0.022·7 +0.457)7 -2.492)7 -5279)7 +87.419
= ((.303·7 -2.492)7 -5.279)7 +87.419
= (-0.371·7 -5.279)7 +87.419
= -7.876·7 +87.419
= 32.287
The number of dolls sold in 2000 was approximately 32,000.
