Answer:
<u>52 cm</u>
Step-by-step explanation:
1st piece (from bottom) = 67 cm
15th piece = 32 cm
a = 67
a₁₅ = a + 14d = 32
14d = 32 - 67
d = -35/14
d =-5/2
d = -2.5
a₇ = a + 6d
= 67 + 6(-2.5)
= 67 - 15
= <u>52 cm</u>
Answer:
what do we know?
we know that a quarter is $0.25 and a nickel is $0.05
4x$.25 = $1
20x$0.05 = $1
and we have 84 coin
n = the number of nickels
q = the number of quarters
(1) n + q = 84 and
(2) 5*n + 25*q = 100*11.80 (always work in cents)
(3) 5*n + 25*q = 1180
Now substitute n from equation (1) into equation (3) and get
5*(84 - q) + 25*q = 1180
420 - 5*q + 25*q = 1180
20*q = 1180 - 420
20*q = 760
q = 38
Then using equation (1), plug in q
n + 38 = 84
n = 46
now check these values.
Is (.05*38 + .25*46 = 11.80)?
Is (2.30 + 9.50 = 11.80)?
Is (11.80 = 11.80)? Yes
Step-by-step explanation:
Plz Mark me as brainliest
The answer is b
it's a special triangle
Answer:
The second statement is true
Step-by-step explanation:
HOpE this helps
Answer:
x=1, y=6. (1, 6).
Step-by-step explanation:
-8x+4y=16
y=5x+1
----------------
-8x+4(5x+1)=16
-8x+20x+4=16
12x+4=16
12x=16-4
12x=12
x=12/12
x=1
y=5(1)+1=5+1=6