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ANEK [815]
2 years ago
9

Josie thinks that because she has two pets, that the average number of pets each of her classmates has is also two. Is this a go

od statistical description of the number of pets each student has? What should she do instead?
Mathematics
1 answer:
konstantin123 [22]2 years ago
3 0

Step-by-step explanation:

ok i know the answer 1+1=2

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Physics students were modeling the height of a ball once it was dropped from the top of a 10 foot ladder. The
julsineya [31]

Answer:

<em>Interval notation: [0, 2.236]</em>

<em>Set Builder notation: </em>\{t\ |\ 0\le t\le 2.236\}

Step-by-step explanation:

Given that:

Equation of height of the ball dropped from a height of 10 foot, as:

h(t) = 10 - 2t^2

Where t is the time since the ball was dropped.

To find:

The domain of the function in Interval and set builder notation.

Solution:

<em>Domain of a function </em>is defined as the set of valid input values that can be given to the function for which the function is defined.

Here, input is time.

We can not have negative values for time.

Therefore, starting value for time will be <em>0 seconds</em>.

And the value of height can not be lesser than that of 0 ft.

0= 10 - 2t^2\\\Rightarrow 2t^2=10\\\Rightarrow t^2=5\\\Rightarrow t =2.236\ seconds

Maximum value for time can be 2.236 seconds.

Therefore the domain is:

<em>Interval notation: [0, 2.236]</em>

<em>Set Builder notation: </em>\{t\ |\ 0\le t\le 2.236\}

4 0
3 years ago
Solve a quadratic equation by factoring j2–30j=0
Lina20 [59]

Answer:

j = 0  or j = 30

Step-by-step explanation:

j² - 30j = 0

Factorise j out of both terms on the left side.

j (j-30) = 0

Apply zero product rule.

j = 0  or j-30 = 0

Find the value of j.

j = 0  or j = 30

4 0
3 years ago
You spin a spinner with four equal sections labeled 1, 2, 3, and 4 and toss a dime.
PIT_PIT [208]
<span>Its : (1, H), (2, H), (3, H), (4, H), (1, T), (2, T), (3, T), (4, T) When you flip a coin, you can result in heads (H) or tails (T) when you spin a spinner with 4 equal sections, you get 1, 2, 3, or 4 (1, 2, 3, 4) Therefore the 8 combinations are above.

Hope this helps :)</span>
8 0
3 years ago
Read 2 more answers
At 10 A.M the outside temperature was -5 F. By noon, the temperature was -17 F. Ricardo said that it was getting warmer outside.
Natasha_Volkova [10]
Ricardo is not correct because the temperature is actually getting colder (idk if I need to explain it more). The difference is -12 F
8 0
3 years ago
Read 2 more answers
Q. Friday night’s hockey game was attended by 180 students. This is about 60 % of the school’s population. What is the total pop
OlgaM077 [116]

Answer:

The total population of the school is 300 students.

Step-by-step explanation:

Considering, we are working with percentage we can use the equation:

y = %x.

To fill in the equation you can use what you already know, 60% = 180

180 = 0.60x

To solve this, you can then divide both sides of the equation by 0.60. This will then give you your answer, 300 = x.

For checking, you can do 180 = 0.60(300) which will result in 180 = 180.

7 0
3 years ago
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