Answer:
Step-by-step explanation:
Substitute:
Isolate x for:
For
Substitute:
The solutions to the system of equations are:
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Answer:
half of a number is 15
Step-by-step explanation:
An equation must contain an equality sign.
The third option is the only phrase that can be represented as an equation:
Answer:
The statement true about the results of the survey is:
- <u>D. 48% of students preferred the seacoast</u>.
Step-by-step explanation:
To identify if the D option is right, you only must use a simple rule of three, where you use the total of the members surveyed in the club (150), and the number of members that preferred the seacoast (72), by the last the operation must confirm that this value (72) is equal to the 48% (how says in the D option). First, you must establish the rule of three:
- 150 = 100 (100% of surveyed really, but is easier to understand in this form)
- 72 = X
And operate:
- X= (72 * 100) / 150
- <u>X = 48 (this means the 48%)
</u>
How you can see, <em><u>the value obtained in the simple rule of three is exactly the percentage of the D option, for this reason, this is the true statement</u></em>.
The answer is 60
Hope this helped!! :)
Answer: The estimate is greater than the actual mass.