16.75 square yards because area of a triangle is half the base times the height. 40.2÷4.8 is 8.375. Since that is half the base, multiply by two. 8.375×2 is 16.75. Hope that helps! :D
17
Step-by-step explanation:
Given in the pic.
Have a good day!
Y= 1 - 5x^2
now, f(3) = 1 - 5 (3)^2
= 1 - 5(9) = -44
Answer:
(11/9, 26/9)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtract Property of Equality<u>
</u>
<u>Algebra I</u>
- Terms/Coefficients
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define Systems</u>
5x + y = 9
10x - 7y = -8
<u>Step 2: Rewrite Systems</u>
Manipulating: Equation 5x + y = 9
- Subtract 5x on both sides: y = 9 - 5x
<u>Step 3: Redefine Systems</u>
y = 9 - 5x
10x - 7y = -8
<u>Step 4: Solve for </u><em><u>x</u></em>
<em>Substitution</em>
- Substitute in <em>x</em>: 10x - 7(9 - 5x) = -8
- Distribute -7: 10x - 63 + 35x = -8
- Combine like terms: 45x - 63 = -8
- Add 63 on both sides: 45x = 55
- Divide 45 on both sides: x = 11/9
<u>Step 5: Solve for </u><em><u>y</u></em>
- Define equation: 5x + y = 9
- Substitute in <em>x</em>: 5(11/9) + y = 9
- Multiply: 55/9 + y = 9
- Isolate <em>y</em>: y = 26/9