Answer:
y = -2
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
- Subtraction Property of Equality<u>
</u>
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
31 - 8(y + 5) = 7
<u>Step 2: Solve for </u><em><u>y</u></em>
- [Subtraction Property of Equality] Subtract 31 on both sides: -8(y + 5) = -24
- [Division Property of Equality] Divide -8 on both sides: y + 5 = 3
- [Subtraction Property of Equality] Subtract 5 on both sides: y = -2
Answer:
2/1 or 2
Step-by-step explanation:
8/4 is 2
9/9 is 1
Answer:
2500 is not a reasonable estimate.
Step-by-step explanation:
We are given the following in the question:
Number of pages read by Josie = 246
Pages read by older brother = 3 to 4 times as many pages as Josie
If x represents the number of pages read by her brother, we can write:
![3(\text{Pages read by Josie})\leq x \leq 4(\text{Pages read by Josie})](https://tex.z-dn.net/?f=3%28%5Ctext%7BPages%20read%20by%20Josie%7D%29%5Cleq%20x%20%5Cleq%204%28%5Ctext%7BPages%20read%20by%20Josie%7D%29)
Putting values, we get,
![3(246) \leq x \leq 4(246)\\738 \leq x \leq 984](https://tex.z-dn.net/?f=3%28246%29%20%5Cleq%20x%20%5Cleq%204%28246%29%5C%5C738%20%5Cleq%20x%20%5Cleq%20984)
Since, 2500 does not lie in this interval
![738 \leq 2500 \nleq 984](https://tex.z-dn.net/?f=738%20%5Cleq%202500%20%5Cnleq%20984)
Thus, 2500 is not a reasonable estimate for the number of pages that Josie's brother read.
Answer:
7.65
Step-by-step explanation:
10- 2.35= 7.65
P(TTTTT)=P(T)^5 and P(T)=1/2 so
P(TTTTT)=(1/2)^5
P(TTTTT)=1/32