Answer:
68°
Step-by-step explanation:
the interior sum of a triangle is 180 so add and subtract
63 + 49 = 112
180 - 112 = 68
Answer:
The cost of a combo meal is $8 and a salad is $4.
Step-by-step explanation:
You have to form simultaneous equations with the given informations. Let combo meal be m and salad is s :
Next, you have to solve these equations :
If an expression is shown as 5(x+2) the numbers inside the parenthesis must both be multiplied by the number outside. Only x was multiple. The correct rewritten expression would be 5x+10
Answer:
1800 would be your answer
Step-by-step explanation:
IF 18 people went in and withdrew 100 dollars you have to multiply 18 by 100 to find the total amount of money that was removed from the ATM
Factor by grouping.
0 = (x^3 +4x^2) +(9x +36) = x^2(x+4) +9(x+4) = (x^2+9)(x+4)
The first factor is the difference of squares (in complex numbers), so the form for factoring that can be used:
a^2 - b^2 = (a -b)(a +b)
Here, a=x, b=3i.
Then the factorization in complex numbers is
0 = (x -3i)(x +3i)(x +4)
Solutions are the values of x that make these factors be zero.
x = -4, -3i, 3i
