Answer:
5a + 6b + 7
step-by-step explanation:
16 + 8a -3a + 6a -9: subtract 9 from 16
7 + 8a -3a + 6b Now subtract -3a from 8a
5a + 6b + 7 is the final answer.
Answer:
ok, keep calm and proceed to click on the brainly app after it has restarted.
Step-by-step explanation:
hope
this
helps
Y=x^2+12x+30
8x-y=10
sub x^2+12x+30 for y in the secodn equaiton
8x-(x^2+12x+30)=10
8x-x^2-12x-30=10
-x^2-4x-30=10
times -1
x^2+4x+30=-10
add 10 both sides
x^2+4x+40=0
use quadratic formula
we find that we have 2 imaginary roots and therefor are not on the real plane, they are not plotted on the imaginary plane
no real solution
x=-2+6i or -2-6i
the interseciton on the imaginary plane is
(-2+6i, -26+48i) or (-2-6i,-26-48i)
Answer:
∠ DAB = 48°
Step-by-step explanation:
The sum of the 3 angles in Δ ACD = 180° , then
∠ CAD + 60° + 90° = 180° , that is
∠ CAD + 150° = 180° ( subtract 150° from both sides )
∠ CAD = 30°
Then
∠ DAB + ∠ CAD = ∠ CAB
∠ DAB + 30° = 78° ( subtract 30° from both sides )
∠ DAB = 48°
Answer:
6.79
Step-by-step explanation:
you just divide 27.16 (the cost) by 4 (how many sandwiches were purchased)
