3 years ago

Which of the following word problems models the expression 8 3/10÷2 1/2 ? Select all that apply.

Mathematics

1 answer:

stealth61 [152]3 years ago

6 0

Answer:

Brayden split cups 8 3/10 of flour into batches of 2 1/2 cups. How many batches of flour did Brayden have?

Sophie has fabric cut into 2 1/2 pieces yards in length. If the original fabric was 8 3/10 yards, how long was each piece?

Step-by-step explanation:

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Please help me 25 points and the best answer will be marked as brainliest

Zanzabum

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3 years ago

Hoping to attract more shoppers, a city builds a new public parking garage downtown. The city plans to pay for the structure thr

posledela

Answer:

$MOE_{95} = 1.192\cdot MOE_{90}$

Step-by-step explanation:

The margin of error is computed using the formula:

$MOE=z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}$

The critical of z for 95% confidence level and 90% confidence level are:

$z_{0.05/2}=z_{0.025}=1.96\\\\z_{0.10/2}=z_{0.05}=1.645$

*Use a z-table.

The sample size is n = 44.

Compare the MOE for 95% confidence level and 90% confidence level as follows:

$\frac{MOE_{95}}{MOE_{90}}=\frac{1.96\times (15/\sqrt{44})}{1.645\times (15/\sqrt{44})}$

$\frac{MOE_{95}}{MOE_{90}}=\frac{1.96}{1.645}\\\\\frac{MOE_{95}}{MOE_{90}}=1.192\\\\MOE_{95} = 1.192\cdot MOE_{90}$

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3 years ago

If R is between A and D and DR = 8 and DA = 15 then AR=

dolphi86 [110]

Answer:

Step-by-step explanation:

heres a model

A ----------R---------D

A ----?-----R----8---D

A----------15----------D

15 - 8 = 7

AR = 7

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3 years ago

-13=r/9+8 I suck at maths so if anyone could help with this problem it will help thank you!

otez555 [7]

Answer:

r = -189

Step-by-step explanation:

Let's make it easy,

-13=r/9+8

r/9 = -13-8

r/9 = -21

r = -21 × 9

r = -189

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3 years ago

Brian drinks 3 1/2 liters of tea every 2/3 of an hour. how many liters does he drink in one hour

DanielleElmas [232]

He drinks 5 1/4 liters in one hour.

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3 years ago

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