SLOVE BY ELIMIMATION METHOD
X+Y=6
X-Y=10
Answers
Step-by-step explanation:
x + y = 6 ...................equation 1
x - y = 10 ..................equation 2
Solving equation 1 and 2
x + y = 6
x -y =10
2x = 16
x = 16 /2
Therefore x = 8
Now
putting x = 8 in equation 1
8 + y = 6
y = 6 -8
y = -2
hope it was helpful :)
Answer:
x=8 and y= -2
Step-by-step explanation:
x+y=6
x-y=10 + ( add them together)
-----------------
2x=16 ( substitute/ plug x back in )
x=8
8+y=6
8-y=10
y=-2
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A: add expenses for rent/mortage, utilities, food, and gas. (my answer)
B: Round all expenses down.
C: Add only the rent/mortgage and utility expenses.
D: Estimate that it will be about 20% of your net income.
2. Suppose you have a bi-weekly mortgage payment of $657. If there are typically 4 weeks in a month, what do you need to do to estimate your monthly mortgage payment?
A: Multiply it by 2, then round
B: Round it down to $650, then multiply by 2
C: Add it to other estimates just as it is
D: Multiply it by 4, then round (my answer)
3. Rent is $978. Phone charges last month were $54.89. Groceries cost about $93/week. What is a good estimate of your monthly expenses?
A: $1,126.00
B: $1,100.00
C: $1, 433.00
D: $1,400.00 (my answer)
4. Bi-weekly mortgage is $455. Monthly phone charges are $34.95. The electric bill last month was $65.88. Groceries cost about $87/week. What is a good estimate of your monthly expenses?
A: $643.00
B: $904.00 (my answer)
C: $1,098.00
D: $1,359.00
Answers
2. If the payment is bi-weekly, and there are 4 weeks in a month, you only have to multiply by 2, because "bi-weekly" means every 2 weeks, which means the payment would come twice a month. So, the answer would be A, Multiply by 2 and then round.
3. Round each of the numbers. 978 becomes 980, 54.89 becomes 55, and 93 becomes 90. We'll assume that there are 4 weeks in a month. Add them all up. 980+55+90+90+90+90 = 1395 So, yes, your answer of D, 1,400.00 is a good estimate.
4. Again, round each of the numbers. 455 can stay the same, 34.95 becomes 35, 65.88 can stay at 65 for the sake of easy math, and 87 gets rounded up to 90.
We'll keep assuming that there are 4 weeks in a month. Now, add them all up. Be sure to remember that the rent is bi-weekly, so it has to be added in twice. 455+455+35+65+90+90+90+90 = 1370. This means that of the choices, D, 1,359.00 is a good estimate of the monthly expenses.
Answer:
1. A its not D
2. A
3. D
4. D
100%
*★,°*:.☆(￣▽￣)/$:*.°★* 。
Answers
Answer:
slope of a trend line that passes through the points (1, 3) and (10, 25) is
Step-by-step explanation:
Formula of slope(m) for two points is given by:
Given the two points:
and
Substitute these points in the given formula we have;
Simplify:
Therefore, the slope of a trend line that passes through the points (1, 3) and (10, 25) is
Answers
10.2×20= 204
204÷100= 2.04
10.2+2.04= 12.24
answer- 12.24inches
Answers
(x-h)^2=4p(y-k)
vertex is (h,k)
distance from vertex to directix=p=distance from vertex to focus
|4p|=focal width
remember, focus is on the side of the parabola where it opens and directix is at the back
when p is negative, it opens down
when p is positive, it opens up
look at equation
-1/40(x-0)^2=(y-0)
times -40 to both sides
(x-0)^2=-40(y-0)
(x-0)^2=4(-10)(y-0)
vertex=(0,0)
p=-10,it's negative so it opens down
focus is 10 units below vertex (y direction)
focus=(0,-10)
diretix is 10 above
directix is y=10
focal width=|4p|=|4(-10)|=|-40|=40
vertex=(0,0)
focus=(0,-10)
directix is y=10
focal width=40 units
degrees