Answer:
x = 2
Step-by-step explanation:
3x + 2x = 10
5x = 10
x = 10/5
x = 2
1) 12b + 27
2) 56k - 24 + 32p
3) 4n + 6b -10
4) 7
5) 63k - 27
There is no sign in between 2b and 6.
Case 1:
Assuming the sign is '+'
Then, 2b + 6 for b = 9 is given by 2(9) + 6 = 18 + 6 = 24.
Case 2:
Assuming the sign is '-'
Then, 2b - 6 for b = 9 is given by 2(9) - 6 = 18 - 6 = 12.
Case 3:
Assuming the sign is 'x'
Then, 2b x 6 for b = 9 is given by 2(9) x 6 = 18 x 6 = 108.
Case 4:
Assuming the sign is '÷'
Then, 2b ÷ 6 for b = 9 is given by 2(9) ÷ 6 = 18 ÷ 6 = 3.
Answer:
273 m^2
Step-by-step explanation:
Firstly, you should find the area of the triangle. Remember that the formula for a triangle's area is (Base x Height) ÷ 2
Therefore,
11 x 14 is 154
154/2 = 77 m^2
Then, we find the area of the square which is just Base x Heigh
14 x 14 is 196m^2
And finally, we just add the two
77 + 196 = 273 m^2
The reason it's not m^3 is because we're not dealing with a third dimensional figure.
Btw, ^ means to the power of.
Answer:
She sold 14 new plans to earn $680 last week.
Step-by-step explanation:
$400 + 20(x) = $680
Take 400 away from total cost. So, 680 - 400 = 280.
Now, divide 280 by 20, and x = 14.
The equation would be $400 + 20(14) = $680