Answer:
a = - 8
Step-by-step explanation:
A polynomial divided by factor (x - h) has a remainder given by f(h)
Here the divisor is (x - 2), thus f(2) gives the remainder, that is
2³ + 2(2)² - 7(2) + a = 4 ← 4 being the remainder
8 + 8 - 14 + a = 4, that is
12 + a = 4 ( subtract 12 from both sides )
a = - 8
You can set this up as a system of equations.
x + y = 19
10x + 25y = 3.70
Your answer would be 31.42 dimes and -12.42 quarters.
Answer:
x = -4 ; y = 1
Step-by-step explanation:
2x + 6y = -2 --------(i)
-x + 2y = 6 --------(ii)
2x + 6y = -2
(ii)*2 <u> -2x + 4y = 12</u>
add; 10y = 10
y = 10/10
y = 1
Substitute y in (i)
2x + 6*1 = -2
2x +6= -2
2x = -2-6
2x = -8
x = -8/2
x = -4
Answer:
D. the questons says avg. not est.
Step-by-step explanation:
Two decimals between are -2.5 and -2.3
