Answer:
d
Step-by-step explanation:
What we know: one part of candy costs $6 per kg
another part of candy costs $4.50 per kg
To get a 15kg candy, lets add 6 and 4.5
6+4.5=10.5
Add 4.5 to 10.5
4.5+10.5=15
So, We need 2 kg of the $4.50 candy, and 1 kg of the $6.00 candy.
Answer:
C. 4yd * 3ft/yd * 12in/1ft * 2.54cm/1.in = 365.76cm
Step-by-step explanation:
First you change 4 yards into feet (By multiplying the 4 yard by 3 ft/1yd)
then you convert 12 feet into inches (By multiplying the 12 feet by 12in/1ft)
after you convert 144 inches to cm (By multiplying the 144 in by 2.54 cm/1in)
you’ll have the value in cm. Which is 365.76.
Answer:
It has no real solutions.
Step-by-step explanation
Once you calculate the discriminant, D= (-10)^2 -4 (8)(15), you simplify the expression to get D= -380, which has no real solutions.
Answer:
(3, 2)
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
- Equality Properties
<u>Algebra I</u>
- Solving systems of equations using substitution/elimination
- Solving systems of equations by graphing
Step-by-step explanation:
<u>Step 1: Define systems</u>
2x + 8y = 22
8x - 8y = 8
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Elimination</em>
- Add 2 equations together: 10x = 30
- Divide 10 on both sides: x = 3
<u>Step 3: Solve for </u><em><u>y</u></em>
- Define original equation: 8x - 8y = 8
- Substitute in <em>x</em>: 8(3) - 8y = 8
- Multiply: 24 - 8y = 8
- Subtract 24 on both sides: -8y = -16
- Divide -8 on both sides: y = 2
<u>Step 4: Graph systems</u>
<em>Check the systems.</em>