Step-by-step explanation:
Sn=n/2(2a+(n-1)d)
910=n/2{2a+(n-1)d}
1820=n{2a+(n-1)d}
1820=20{2a+(20-1)d}
1820=20{2a+19d}
91=2a+19d
An=a+(n-1)d
95=a+(20-1)d
95=a+19d
91=2a+19d
---------------
4=-a
a=-4
91=2a+19d
91=2(-4)+19d
91=-8+19d
91+8=19d
99=19d
d=99/19
A=-4
Answer:
240
Step-by-step explanation:
The slope represents the the number of hours after the sunrise, and the y intercept represents the temperature
The linear function would y=4x+4
6.) y=4+ 10/5x
7.) y= -5 -3x
Answer:
The net cost of the photocopier before january 1 is <u>$1350.</u>
Step-by-step explanation:
Given:
The manufacturer offers a $125 rebate on photocopiers purchases before january 1.
Now, to find the net cost of $1,475 photocopier before january 1.
Amount of rebate before January 1 = $125.
Cost of photocopier = $1,475.
So, to get the net cost of $1475 photocopier before january 1 we subtract the rebate from it:
Therefore, the net cost of the photocopier before january 1 is $1350.
Answer:
Step-by-step explanation:
Use Pythagorean theorem
Hypotenuse² = base² + altitude²
= 9² + 10²
= 81 + 100
= 181
hypotenuse = √181