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BabaBlast [244]
3 years ago
5

In a research sample of high school students, the variable “number of Instagram followers” formed normal distribution with a mea

n of 45 and a standard deviation of 16. If the research sample contained 500 students, approximately how many had 21 or fewer friends?
A)7
B)467
C)21
D)33
Mathematics
1 answer:
Papessa [141]3 years ago
5 0
Approximately it would be C 21
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3 years ago
In the inequality 6a+4b>10, what could be the possible value of a if b=2?
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We are given the following inequality:

6a+4b>10

If we replace b = 2, we get:

\begin{gathered} 6a+4(2)>10 \\ 6a+8>10 \end{gathered}

Now we solve for "a" first by subtracting 8 on both sides:

\begin{gathered} 6a+8-8>10-8 \\ 6a>2 \end{gathered}

Now we divide both sides by 6

\frac{6a}{6}>\frac{2}{6}

Simplifying:

a>\frac{1}{3}

Therefore, for b = 2, the possible values of "a" are those that are greater than 1/3

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1 year ago
Domain and Range for this equation? F(x)= 3x^7+0x^6-0x^5-2x^4-3x^3-2x^2-x^1+x^0
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The degrees of the polynomial is odd (3x^7, 7 is odd), therefore the range is equal all real numbers

R=\mathbb{R}
8 0
2 years ago
The area (A) of a triangle varies jointly as its ba
Harrizon [31]

Answer:

The area (A) of a triangle varies jointly as its ba

se (b) and height (h). If its base is 8 inches and i

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5

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Formulate the equation of variation.

Step-by-step explanation:

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95t + 105t = 440

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3 years ago
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