Answer:
y = -5
General Formulas and Concepts:
<u>Pre-Alg</u>
- Order of Operations: BPEMDAS
- Equality Properties
Step-by-step explanation:
<u>Step 1: Define equation</u>
-9 = 2(18) + 9y
<u>Step 2: Solve for </u><em><u>y</u></em>
- Multiply: -9 = 36 + 9y
- Subtract 36 on both sides: -45 = 9y
- Divide both sides by 9: -5 = y
- Rewrite: y = -5
<u>Step 3: Check</u>
<em>Plug in y to verify it's a solution.</em>
- Substitute: -9 = 2(18) + 9(-5)
- Multiply: -9 = 36 - 45
- Subtract: -9 = -9
Answer:
kwanza sielewi kwanini swali hili ni refu pia ikiwa unaweza kuelewa hii sema mama juu ya miamba bila kutumia google
Step-by-step explanation:
Answer: Choice B) SAS
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Explanation:
The sides that have the double tickmarks are the same length. This forms one "S" of "SAS".
The square angles are 90 degree angles, or right angles. They are congruent. This forms the "A" of "SAS".
The overlapping sides are the same length, which forms the second "S" of "SAS".
The angle is between the two sides allowing us to use SAS. The order is important.
