Answer:
$2
Step-by-step explanation:
Sandy adds $4 to a certain amount of money she already has saved.
Let the amount she has saved be x.
=> x + 4
Kyle already has 10 times as much money as sandy has saved (10x) but then spends 14$ dollars of his savings.
=> 10x - 14
They both have the same amount of money now:
=> 10x - 14 = x + 4
To get x, collect like terms and simplify:
10x - x = 4 + 14
9x = 18
x = 18 / 9 = $2
This means that Sandy had already saved $2.
Answer:
(800 x 9) + (10 x 9)
Step-by-step explanation:
Find out what 810 x 9 is:
810 x 9 = 7290
Then see which expression has the same answer. Personally I'd check all of them, but luckily the first expression is the correct one so you don't need to go through the rest (since it only asks for one correct expression):
(800 x 9) = 7200
(10 x 9) = 90
7200 + 90 = 7290
Answer:
Step-by-step explanation:
8n + 6 = 8*1 + 6 = 8 + 6 = 14
2(4n + 3) = 2*(4*1 + 3) = 2*(4 + 3) = 2*7 = 14
14n = 14*1 = 14
Answer:
4
Step-by-step explanation:
2+2=4
Check the picture below.
let's notice those two corresponding angles of 90° - 2x, and also recall that the sum of all interior angles in a triangle is 180°.