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DerKrebs [107]
3 years ago
7

The following two-way frequency table shows information collected from a survey of

Mathematics
1 answer:
Novay_Z [31]3 years ago
3 0

Answer:

0.62

Step-by-step explanation:

In the picture attached, the table is shown.

We want to find the probability that a student uses the Internet, given that he or she is in eighth  grade. Mathematically:

P(Internet | eighth  grade) = P(Internet ∩ eighth  grade)/P(eighth  grade)

P(Internet | eighth  grade) = (8/28)/(13/28) = 8/13 = 0.62

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zimovet [89]

Answer:

m

Step-by-step explanation:

Square area: m²

The formula for finding the square area: m×m=m²

m²=√(m²)=m

one side of the square is equal to m

4 0
2 years ago
X and y vary inversely and x=50 when y=5 find y when x=10 what is k?
Kisachek [45]

Answer:

Part A)

1)  k=250

2) y=25

Part B)

1)  k=7

2) y=84

Step-by-step explanation:

Part 1) x and y vary inversely and x=50 when y=5 find y when x=10 what is k?

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form y*x=k or y=k/x

step 1

<u>Find the value of k</u>

x=50 when y=5

substitute the values

y*x=k ------> 5*50=k -----> k=250

The equation is equal to

y*x=250  or y=250/x

step 2

<u>Find y when x=10</u>

substitute the value of x in the equation and solve for y

y*(10)=250

y=250/10=25

Part B) x and y vary directly and x=6 when y=42 find k what is y when x=12

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form y/x=k or y=kx

step 1

<u>Find the value of k</u>

x=6 when y=42

substitute the values

y/x=k ------> 42/6=k -----> k=7

The equation is equal to

y/x=7  or  y=7x

step 2

<u>Find y when x=12</u>

substitute the value of x in the equation and solve for y

y=7(12)=84

5 0
3 years ago
A room has an area of 60 square meters and a perimeter of 32 meters. What are the length and width of the room?
SOVA2 [1]
6 and 10 because 6 times 10 is 60 and 6 plus 6 plus 20 plus 10 is 32
4 0
3 years ago
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Find the value of x that solves the system shown below.<br> y = 5x<br> 2x - y = 18
cestrela7 [59]
Since 5x is equal to y.we can write 5x instead of y in the equation.and then solve the equation

7 0
2 years ago
You earn $28 for washing 4 cars. How much do you earn for washing 3 cars?
a_sh-v [17]

Answer:

21 dollars

Step-by-step explanation:

8 0
3 years ago
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