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we know that
area larger triangle (DEF)=[scale factor]²*area smaller triangle (ABC)
solve for scale factor
scale factor=√[area larger triangle/area smaller triangle]
scale factor=√[144/100]------> scale factor=1.2
therefore
measure EF=scale factor *measure BC
solve for measure BC
measure BC=measure EF/scale factor-------> 15/1.2------> 12.5 cm
the answer is
measure BC is 12.5 cm
They get ten times smaller, so you could say a number is getting divided by ten or the decimal point is moving to the left one place value.
Answer:
y = 0
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Step-by-step explanation:
<u>Step 1: Define</u>
8y + 11 = 6y + 11
<u>Step 2: Solve for </u><em><u>y</u></em>
- Subtract 6y on both sides: 2y + 11 = 11
- Subtract 11 on both sides: 2y = 0
- Divide 2 on both sides: y = 0