Shouldn't the answer be: (-1,4),(1,4),(2,4),(-2,4)
Hello from MrBillDoesMath!
Answer:
x = 10
Discussion:
A plane triangle contains 180 degrees. Adding the angles in the triangle shown in #8 gives
(4x + 7) + (3x + 13) + 90 = 180
Note the "right angle" shown in the triangle has been replaced by its 90 degree equivalent in the above equation.
Combining like terms gives
( 4x + 3x) + (7 + 13) + 90 = 180
7x + 20 + 90 = 180 => (subtract 90 from each side)
7x + 20 + 90 - 90 = 180 - 90 = 90 =>
7x +20 = 90 => (subtract 20 from each side)
7x + 20 -20 = 90 -20 =>
7x = 70 =>
x 70/7 =10.
Thank you,
MrB
Answer:
6
Step-by-step explanation:
3 × (10 - 6) ÷ 2 =?
The strategy that we are using here is <u>PEMDAS</u>:
First, you subtract 6 <u>from</u> 10 which is 4. <em>10 - 6 =</em><em>4</em>
Next, you <u>multiply</u> 4 by 3. <em>4 × 3 = </em><em>12</em>
Then, you <u>divide</u> 12 by 2. <em>12 ÷ 2 = </em><em>6</em>
Your answer is 6.
Your welcome. Showed my work below.