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ValentinkaMS [17]
3 years ago
7

Plzzz help me with thiss

Mathematics
1 answer:
natima [27]3 years ago
7 0
Number one is 1/2 and 2 is 2/3
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Estimate 32% of 19.
Kipish [7]

Answer: 13

Step-by-step explanation: calculator

5 0
3 years ago
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After t seconds, a ball in the air from the ground level reaches a height of h feet given by the equation h= 144t-16t^2 . After
Effectus [21]
H=0
Therefore:
144t-16t²=0
t (144-16t)=0
We have two equations:
1)
t=0    (when the ball is released)
2)
144-16t=0
-16t=-144
t=-144 / -16=9  (this is the time )

Answer: the ball hit the ground in 9 s. 
3 0
3 years ago
4d. Health Survey. In a survey of 1020 adults in the United States, 44% said that they wash their hands after riding public tran
AleksandrR [38]

Answer:

Discrete. See explanation below

Step-by-step explanation:

We need to remember some previous concepts:

We have two types of numerical data: Discrete and Continuous

When we say Discrete data we are refering to data that is countable or can be expressed with integers in a domain.

In the other case when we talk about continuous data we are refering to data that is continuous in a specified domain, it can contain decimals or rational numbers in the Real numbers for example.

For this special case we know that they select a sample size of n=1020 and the sample proportion of people in the United States who wash their hands after riding public transportation was 0.44 or 44% in percentage.

\hat p = \frac{X}{1020}=0.44

X=0.44*1020=448.8 \approx 449

But the number of subjects on this survey needs to be Discrete, since the possible values are 0,1,2,3,4,.....,n and never we have decimals or continuous data in order to express this.  

3 0
3 years ago
If there are 2,400 students,<br> 52% are boys and 48% girls. <br> What is the ratio of boy and girl?
jek_recluse [69]

Answer:

13:12

Step-by-step explanation:

52% 2400 = 1248

48% 2400 = 1152

Reduce to 13/12 = 13:12

4 0
3 years ago
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Angle UZT is congruent to angle?
Ymorist [56]

Answer:

In order for me to help you I need to either see a photo or know more about the other angle.

Step-by-step explanation:

3 0
3 years ago
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