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2 years ago

(05.01 LC)*PLEASE ANSWER 20 POINTS +BRANLIEST PLEASEEE!!!

Mathematics

2 answers:

Natali [406]2 years ago

5 0

Actually, I believe the answer would be B, 25, since it is changing 25 ft every 1 second—thus it wouldn't be 1 per 25 (1/25) it would be 25 per 1, or 25/1, or simply 25.
You can give the brainliest to the other guy, though. :)

Bess [88]2 years ago

3 0

C) 1/25 for every 1 it goes up 25. therefore 1/25! hope I helped!!! brainliest would be much appreciated because I am trying to rank up!!!

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Carter wants to buy a new movie for $25 he already has $11 dollars saved and his mom will give him $2 for each chore he does wha

Drupady [299]

Answer:

Step-by-step explanation:

25+11=36+2=38 that is the answer

5 0

2 years ago

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pentagon [3]

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2 years ago

On the coordinate plane below, quadrilaterals TRAP and HELP are similar to each other.

Aleks04 [339]

Answer:Quadrilateral TRAP has an area that is one-fourth the area of quadrilateral

Step-by-step explanation:

6 0

2 years ago

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A researcher wishes to estimate, with 99% confidence, the population proportion of adults who think the president of their co

scoray [572]

Answer:

a. n=4148

b. n=3909

c. The sample size is smaller if a known proportion from prior study is used. The difference in sample sizes is 239

Step-by-step explanation:

a. For sample where no preliminary estimate is given, the minimum sample size is calculated using the formula:

$n=p(1-p)(\frac{z}{ME})^2$

Where:

$ME=$ Margin of error
$p=$ is the assumed proportion

#Let p=0.5, substitute in the formula to solve for n:

$n=0.5(1-0.5)\times (2.576/0.02)^2\\\\=4147.36\approx 4148$

Hence, the minimum sample size is 4148

b. If given a preliminary estimate p=0.38, we use the same formula but substitute p with the given value:

$n=p(1-p)(z/ME)^2\\\\=0.38(1-0.38)(2.576/0.02)^2\\\\=3908.47\approx3909$

Hence, the minimum sample size is 3909

c. Comparing the sample sizes from a and b:

$n_{0.5}>n_{0.38}\\\\n_{0.5}-n_{0.38}=4148-3909=239$

Hence, the actual sample size is smaller for a known proportion from prior a prior study.

8 0

3 years ago

Can someone help me!?!?

amm1812

It's the first step.4x-x-2+6=6x+16 ##substract 2 rather an add 2

Check it carefully next time.!!

5 0

2 years ago