4) a. x+y=1–(1)
y=2x-8—(2)
(2) into (1)
x+(2x-8)=1
3x-8=1
3x=1+8
x=9/3
x=3—(3)
(3) into (2)
y=2(3)-8
y=-2
ans x=3, y=-2
b. x+y=19—(1)
y=5x+1—(2)
(2) into (1)
x+(5x+1)=19
6x+1=19
6x=19-1
x=18/6
x=3—(3)
(3) into (2)
y=5(3)+1
y=16
ans x=3, y=16
c.x+y=-2—(1)
y=x-10—(2)
(2) into (1)
x+(x-10)=-2
2x-10=-2
2x=-2+10
x=8/2
x=4–(3)
(3) into (2)
y=4-10
y=-6
ans x=4, y=-6
5) 3x=y—(1)
x=y-16–(2)
(2) into (1)
3(y-16)=y
3y-48=y
2y=48
y=48/2
y=24–(3)
(3) into (2)
x=24-16
x=8
ans x=8, y=24
The equation for a sequence is
an=a1+(n-1)d
Replace the variable with what you were given you get
37=-13+(n-1)5
Simplify
37=-13+5n-5
Combine like terms
37=5n-18
Reverse operations
55=5n
Simplify
n=11
combining x and -4.87x on the left,
adding -35.39 to both sides we get,
dividing both sides by -3.87, we get
Answer : x=-29.354
A) P is the current value so P is $2,500.
r is the annual percentage rate which is 2.7% BUT it must be written as a decimal.
so r is 1.027.
n is 4 because it is compounded quarterly which is 4 times per year.
B) now substitute these values into the formula and now you know that t is 7 as it says in the question
when you type this into the calculator, you should round your answer to 2 decimal places as you are considering money.
therefore, the answer is $1,502,827.17
hope this helps! have a good day ~ •lipika•
Answer:
375
Step-by-step explanation:
thre digit odd multiples of 25 >200 and <700 are 225,275,325,375,425,475,525,575,625,675
if all the digits are odd and different ,then 375,475
4+7+5=16 so not divisible by 3.
3+7+5=15 divisible by 3
375 satisfies all the conditions.
