Answer:
first term a=4
Step-by-step explanation:
Sum of the first 6 terms S6 = 15624
common ratio r= 5
n= 6
first term a=?
Formula: S6= a(r^n-1)/r-1
15624 = a( 5^6-1)/5-1
15624 = a(15625-1)/4
15624= a( 15624)÷4
15624= 15624a÷4
Cross multiply
15624×4 = 15624a
62496 = 15624a
divide both sides by 15624
62496÷15624 = 15624a÷15624
4 = a
a= 4
Answer:
480
Step-by-step explanation:
8x4=32
8x8=64
32x4=128
32x8=256
256+128+64+32=480
1. parallel lines have same slope
Answer:
504 cm2
Step-by-step explanation:
Formula + l x w x h divided by 2
9 x 14 x 8 divided by 2 = 504 cm2
remember to include the unit of measurement in your answer
i can not see the numbers clearly tho, so if i put the wrong answer, please let me know the measurements of the length
Answer:
C
Step-by-step explanation:
Solve the quadratic in answer choice C using the quadratic formula:
.
Here a=1, b=2, and c=17.
Substitute and you'll have:
