Answer:
x= -2
Step-by-step explanation:
Answer:
(4, 10)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties<u>
</u>
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality<u>
</u>
<u>Algebra I</u>
- Coordinates (x, y)
- Coefficients
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define Systems</u>
-5y + 8x = -18
5y + 2x = 58
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Elimination</em>
- Combine 2 equations: 10x = 40
- [Division Property of Equality] Divide 10 on both sides: x = 4
<u>Step 3: Solve for </u><em><u>y</u></em>
- Substitute in <em>x</em> [Original equation]: -5y + 8(4) = -18
- Multiply: -5y + 32 = -18
- [Subtraction Property of Equality] Subtract 32 on both sides: -5y = -50
- [Division Property of Equality] Divide -5 on both sides: y = 10
Answer: C. 180 times
Step-by-step explanation:
From the 60 trials, the percentage of times Laura picked a green marble was:
= 100% - Percentage of times blue and red were picked
= 100% - 25% - 15%
= 60%
If these results were repeated with 300 trials, the number of times Laura would be expected to pick green would be:
= 60% * 300
= 180 times
Answer:
pepepopo
Step-by-step explanation:
ubsbsvxvxvxvxvxb b
red
<em>![2216 \times x6 \sqrt[2 { \times y + 21 - 6 = 45022y82412. {9 {?}^{?} }^{?} \times \frac{?}{?} \times \frac{?}{?} \times \frac{?}{?} \times \frac{?}{?} x \times = \sqrt[1 \times { < 0}^{ \: m} ]{?} \times \frac{?}{?} \times \frac{?}{?} }^{?} ]{?}](https://tex.z-dn.net/?f=2216%20%5Ctimes%20x6%20%5Csqrt%5B2%20%7B%20%5Ctimes%20y%20%2B%2021%20-%206%20%3D%2045022y82412.%20%7B9%20%7B%3F%7D%5E%7B%3F%7D%20%7D%5E%7B%3F%7D%20%20%5Ctimes%20%5Cfrac%7B%3F%7D%7B%3F%7D%20%20%5Ctimes%20%5Cfrac%7B%3F%7D%7B%3F%7D%20%20%5Ctimes%20%5Cfrac%7B%3F%7D%7B%3F%7D%20%20%5Ctimes%20%5Cfrac%7B%3F%7D%7B%3F%7D%20x%20%5Ctimes%20%20%3D%20%20%5Csqrt%5B1%20%5Ctimes%20%20%7B%20%3C%200%7D%5E%7B%20%5C%3A%20m%7D%20%5D%7B%3F%7D%20%20%5Ctimes%20%5Cfrac%7B%3F%7D%7B%3F%7D%20%20%5Ctimes%20%5Cfrac%7B%3F%7D%7B%3F%7D%20%7D%5E%7B%3F%7D%20%5D%7B%3F%7D%20)
</em>
The answer is C! a line that shows the set of all solutions to the equation :)
