Answer:
I agree with none of them
Step-by-step explanation:
Given
![Expression= 2^{28}](https://tex.z-dn.net/?f=Expression%3D%202%5E%7B28%7D)
![Andre: 2 * 28 = 56](https://tex.z-dn.net/?f=Andre%3A%202%20%2A%2028%20%3D%2056)
![Elena: 28 * 28 = 756](https://tex.z-dn.net/?f=Elena%3A%2028%20%2A%2028%20%3D%20756)
Required
Who is correct?
![Expression= 2^{28}](https://tex.z-dn.net/?f=Expression%3D%202%5E%7B28%7D)
When we apply law of indices to the above, it gives 2 multiplies by itself in 28 places
i.e.
![Expression= 2^{28}](https://tex.z-dn.net/?f=Expression%3D%202%5E%7B28%7D)
---- in 28 places
Andre's interpretation of the expression is incorrect as:
![2^{28} \neq 56](https://tex.z-dn.net/?f=2%5E%7B28%7D%20%5Cneq%2056)
Also, Elena's expression is incorrect.
This is so, because
![2^28 \neq 28*28](https://tex.z-dn.net/?f=2%5E28%20%5Cneq%2028%2A28)
<em>Hence, both of them are incorrect and I agree with none of them</em>
Step-by-step explanation:
oh,dude where is x?in figure
Answer:
2:3
Step-by-step explanation:
You can divide 6:9 by 3
6/3=2
9/3=3
So, therefore the answer is 2:3.
Answer:
-187
Step-by-step explanation:
2*2-45+2-4*37
(multiply)
4-45+2-148
(calculate)
-187
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