Answer:
(2,2)
Step-by-step explanation:
Given equations
x-3y=-4-------------------------------(1)
y=-3x+8.------------------------------(2)
Substitute 2 in 1. This means use the value of y in equation 1, to replace y
x-3(-3x+8)=-4------------------open brackets
x+9x-24=-4---------------------collect like terms
10x=-4+24
10x=20---------------------------divide by 10 both sides to get value of x
10x/10=20/10=2
x=2------------------------------use value of x in equation (2) to get value of y
y=-3x+8
y=-3(2)+8
y=-6+8=2
solutions
x=2, y=2
Answer:
$28.68
Step-by-step explanation:
57.24+64.08
121.32
150-121.32
A = square root of 1183
A = 34.39
V = 34.4^3
V = 40707.580
Further samples,
<span>Rounding off numbers to their nearest mentioned position allows approximation from the number value itself. </span>
<span>In the number 63, 849 </span><span><span>
1. </span>Rounding off to the nearest ten thousands would mean the value of 6 which is equal to 60, 000</span> <span><span>
2. </span>Rounding off to the nearest thousands would mean the value of 3 which is equal to 64, 000</span> <span><span>
3. </span>Rounding off to the nearest hundreds would mean the value of 8 which is equal to 63, 800</span>
<span><span>4. </span>Rounding off to the nearest tens would mean the value of 4 which is equal to 63, 850</span> <span><span>
5. </span>Rounding off to the nearest ones would mean the value of 9 which is equal to 63, 859.00</span>
<span>Since there are no decimal values the ones value stays the same. Take note of the rounding off rules between number 0-4 and 5-9.<span> </span></span>
