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shepuryov [24]
3 years ago
10

HELPP ON THESE TWO ILL MARK FIRST WHO ANSWERS

Mathematics
2 answers:
timurjin [86]3 years ago
7 0
About 1800 words per 30 min for the first question. Second question will be 120 elephants 80:120 ratio.
yarga [219]3 years ago
6 0
1. 1800 per 30 mins
2. 120 elephants ( 80:120 )
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a rectangular tabletop has a length of 4 3/4 feet and an area fo 11 7/8 square feet. What is the width of the tabletop?
GenaCL600 [577]
W=A/L; 11 7/8 ÷ 3/34= 3 1/6ft
5 0
3 years ago
Using the following image, find GH given HI = 1 and GI =<br> = 9.
shepuryov [24]

Answer:

8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A rock is placed in a graduated cylinder to determine its volume. The following data are obtained. What is the volume of the roc
yarga [219]
Easy
when rock is in water, it takes up a certain volume, say x
so
initial+x=final volume
luckily we have final and inital
13.7ml+x=28.9ml
minus 13.7ml both sides
x=15.2ml


the volme of the rock is 15.2ml
7 0
3 years ago
Read 2 more answers
A researcher is wondering whether the smoking habits of young adults (18-25 years of age) in a certain city in the U.S. are diff
Usimov [2.4K]

Answer:

For this case we want to test if in a certain city in the U.S. are different from the proportion of the general population of young adults in the U.S 0.16 (alternative hypothesis) and the best system of hypothesis are:

Null hypothesis: p=0.16

Alternative hypothesis:p \neq 0.16

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".  

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".  

Solution to the problem

For this case we want to test if in a certain city in the U.S. are different from the proportion of the general population of young adults in the U.S 0.16 (alternative hypothesis) and the best system of hypothesis are:

Null hypothesis: p=0.16

Alternative hypothesis:p \neq 0.16

8 0
4 years ago
2 × √(7) + 5 × √(7) - √(7)
arsen [322]

Answer:

6√(7) is the simplified expression

Step-by-step explanation:

8 0
3 years ago
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