Answer:
a = -40
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
Step 2: Subtract 6 from both sides.
Step 3: Multiply both sides by 5.
Therefore, a = -40. I hope this helped you!
Step-by-step explanation:
A = pi × r²
A = pi × 13²
A = 530.93 km²
X=23
39÷3 =13
x - 10 = 13
x = 23
Good evening ,
Answer:
∠b = 12°
Step-by-step explanation:
∠a and ∠b are complementary angles ⇔ ∠a + ∠b = 90
Then ∠a =90 - ∠b = 90 - 78 = 12°
:)
The <em><u>correct answer</u></em> is:
A.Angle Addition Postulate; Subtraction Property of Equality
Explanation:
The angle addition postulate states that if you place two angles side by side, then the measure of the resulting angle will be equal to the sum of the two original angle measures. This gives us m∠PQR+m∠SQR = m∠PQS.
The next missing justification is for the step that takes 2x+18=100 to 2x=82. In order to get here, we subtract 18 from each side; the property that allows this is the subtraction property of equality.
