Answer:
It is an unusual result contradicting the national survey.
Step-by-step explanation:
National survey showed 44% of college students who drink.
The professor's survey showed that 96/244 = 39% drink.
The professor's survey deviated from the national survey is 5% (44% - 39%) representing about 0.25% (5% squared) variance.
Standard deviation is the spread of a set of numbers from their mean. In other words, it measures how far an observed value is from the mean. It can be calculated by getting the square root of the variance.
Answer:
4,800 is your answer
Step-by-step explanation:
Johanna is jogging at 600 feet per minute, since
3000/5=600
That means 8 minutes of jogging at 600 feet per minute is 8×600
8×600=4800
Johanna travelled 4800 feet when she jogged at 600 feet per minute for 8 minutes.
Answer:
x = 3
Step-by-step explanation:
4 + 12x + 16 = 6x + 38
12x - 6x = 38 - 16 - 4
6x = 18
x = 18 / 6
x = 3
The term is used as means of asking students to write down equations using simple mathematical symbols (numerals, the four basic mathematical operators, equality symbol)[5]. Sometimes boxes or shapes are used to indicate unknown values. As such number sentences are used to introduce students to notions of structure and algebra prior to a more formal treatment of these concepts.
A number sentence without unknowns is equivalent to a logical proposition expressed using the notation of arithmetic.
[edit] Examples
A valid number sentence that is true: 3 + 7 = 10.
A valid number sentence that is false: 7 + 9 = 17.
A valid number sentence using a 'less than' symbol: 3 + 6 < 10.
An example from a lesson plan:
Some students will use a direct computational approach. They will carry out the addition 26 + 39 = 65, put 65 = 23 + □, and then find that □ = 42.[6] (wikipedia)
<span>I hope this is helpful!
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It should be -48. Multiply 40 by the reciprocal and simplify.