Answer:
10
Step-by-step explanation:
add 3
17+3 = 20
divide by 2
20÷2 = 10
Answer:
(3, -2)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
<u>Algebra I</u>
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define Systems</u>
y = -x + 1
y = 4x - 14
<u>Step 2: Rewrite Systems</u>
y = 4x - 14
- Multiply everything by -1: -y = -4x + 14
<u>Step 3: Redefine Systems</u>
y = -x + 1
-y = -4x + 14
<u>Step 4: Solve for </u><em><u>x</u></em>
<em>Elimination</em>
- Combine equations: 0 = -5x + 15
- Isolate <em>x</em> term: -15 = -5x
- Isolate <em>x</em>: 3 = x
- Rewrite: x = 3
<u>Step 5: Check</u>
- Define equation: y = -x + 1
- Substitute in <em>x</em>: y = -3 + 1
- Add: y = -2
Answer:
Step-by-step explanation:
first lets find out how much she spent
1 x $13 = $13 for the coffee (i dont know if im missing the amount of pounds bc there is no number there so if i am im sorry :/ )
2 x $0.45 = $0.90 for the rice
wehen added together we have 13.90 in total
to find hhow much change she recieved subtract it from 50
50 - 13.90 = $39.10 in change
hope this helps <3
Answer:
it should be -10
Step-by-step explanation:
5 x 2 is 10 but you add the negative. Mary added instead of multiplied.
Answer:
The answer is below.
Step-by-step explanation: