Ask question

Ask question

All categories

3 years ago

7

Devlin, Mazy, and Aria collect pennies. If each person collects the same amount of pennies each day, how many pennies will Delvi

n have after 6 days?

1 answer:

wolverine [178]3 years ago

3 0

Answer:

504

Step-by-step explanation:

you divided 84 x 6 bruh which = 504

You might be interested in

9,443.2 the 4 in the tens place is ? the value of the 4 in the hundreds place.

lorasvet [3.4K]

In the value 9,443.2 we can spot two 4's.

One resides in the hundreds column and the other resides in the tens column.

7 0

3 years ago

Sam is baking 10 pies for a school bake sale. He uses 21 cups of apples for 6 pies. How many cups of apples will he need to make

sertanlavr [38]

Answer:

35

Step-by-step explanation:

6 pies = 21 cups of apples

1 pie = 3.5 cups of apples

10 pies = 35 cups of apples

7 0

3 years ago

A group of researchers wants to know whether men are more likely than women to contract a novel coronavirus. They surveyed two r

olasank [31]

Answer:

Test statistic Z= 0.13008 < 1.96 at 0.10 level of significance

null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

Step-by-step explanation:

<em>Step(I)</em>:-

Given surveyed two random samples of 390 men and 360 women who were tested

first sample proportion

$p_{1} = \frac{360}{390} = 0.9230$

second sample proportion

$p_{2} = \frac{47}{52} = 0.9038$

Step(ii):-

Null hypothesis : H₀ : There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

Alternative Hypothesis:-

There is difference between proportion of positive tests among men is different from the proportion of positive tests among women

$Z = \frac{p_{1}- p_{2} }{\sqrt{PQ(\frac{1}{n_{1} }+\frac{1}{n_{2} } } }$

where

$P = \frac{n_{1}p_{1} +n_{2} p_{2} }{n_{1}+n_{2} }$

P = 0.920

$Z= \frac{0.9230-0.9038}{\sqrt{0.920 X0.08(\frac{1}{390}+\frac{1}{52} } )}$

Test statistic Z = 0.13008

Level of significance = 0.10

The critical value Z₀.₁₀ = 1.645

Test statistic Z=0.13008 < 1.645 at 0.1 level of significance

Null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

7 0

3 years ago

What 2 numbers multiply to -216 and add up to 6

Lena [83]

-12 and 18

hope this helps :)

7 0

3 years ago

Read 2 more answers

Anyone know this geometry question?

andre [41]

Option D should be your answer.

No combo of any of those angles add up to exactly 180 to suggest that they are parallel lines.

3 0

3 years ago