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Mathematics

2 answers:

Anni [7]2 years ago

7 0

The answer is E. if i were you, i would just plug it into my calculator

Snezhnost [94]2 years ago

5 0

Answer:

I'm probably wrong, but I think it's A. I don't use the same school website as you do, so I can't tell if it's a multiple choice. Sorry if it is and I'm wrong though!

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I’m confused on this question, please help me. (Ignore the black coloring, sorry.)

neonofarm [45]

To answer this question you will find out the total number of cupcakes donated and then calculate the amount of each flavor based on the percentage that is stated.

Here are the steps:

1. 12 x 10 x 12 (12 classes each donating 10 dozen) = 1440

2. 0.55 x 1440 (55% are chocolate) = 792 chocolate

3. 1440 - 792 (the remaining number of cupcakes)=648

4. 1/3(33 1/3%) x 648 = 216 red velvet

5. 1440 - 792 (chocolate) - 216 (red velvet) = 432 vanilla cupcakes

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Red velvet - 216
Vanilla - 432

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3 years ago

The figure is formed from rectangles . Find the total area

Anna35 [415]

It might be c. im not really sure, but that's what I got. sorry if its wrong...

8 0

3 years ago

4. A statistician working for the National Basketball Association supplies the television announcers with interesting statistics

Sonbull [250]

Answer: 0.038

Step-by-step explanation:

Given: Total games : n= 375

Number of games won by the team that was winning the game at the end of the third quarter. = 300

The proportion (p) of the team that was winning the game at the end of the third quarter: $p=\dfrac{300}{375}=0.8$

Critical z-value for 90% confidence: z* = 1.645

Margin of error = $z^*\sqrt{\dfrac{(1-p)p}{n}}$

The margin of error in a 90% confidence interval estimate of p $=1.645\sqrt{\dfrac{0.2\times0.8}{300}}\\= 1.645\times\sqrt{0.00053333}\\\\=1.645\times0.0231\\\\=0.0379995\approx$$0.038$