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3 years ago

Mrs. Baker found 25 shells on the beach. She brought 2/5 of the shells to her

Mathematics

2 answers:

Basile [38]3 years ago

8 0

Answer:

A. 10 B. 15

Step-by-step explanation:

A. 25/1 * 2/5= 50/5

reduced it is 10

B. 25-10=15

nikklg [1K]3 years ago

3 0

Answer:

she brought 10 shells to her classroom and 15 shells to her house. Hope that helps!

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PLEASE HURRY IM BEING TIMED!

ddd [48]

Answer:

The answer is

$\frac{26}{31}$

GOOD LESSONS ♡

7 0

3 years ago

Joan draws a bar chart to show the temperatures at midday on March 1st in five cities. Joan has made four mistakes in her diagra

Aleksandr [31]

Answer:

Step-by-step explanation:

Properties of a bar graph:

1). There should be equal space between the bars or the columns.

2). Width of each bar or columns should be same.

3). All bars should have same base.

4). Height of each bar will show the value of the data.

By these properties,

- Space between London-Paris, Rome-Oslo are not equal.

- Width of Munich bar is different from other bars.

8 0

4 years ago

Read 2 more answers

Find the value of each expression in simplest form <br> 1 2/3 + 2 3/4

Kruka [31]

Answer:

The answer is 4 5/12

Step-by-step explanation:

5/3 + 11/4

=5x4 - 3x4 + 11x3 - 4x3

=20/12 + 33/12

=53/12

Simplified

= 4 5/12

Hope this helps. :D

7 0

3 years ago

Sigma notation from sum. pls help?? sorry for the calc spam :P

givi [52]

To the risk of sounding redundant,

$\bf \begin{array}{ccccccccc}
k=2&&k=3&&k=4&&k=5&&k=6\\\\
\frac{\underline{2}+2}{2(\underline{2})}&&\frac{\underline{3}+2}{2(\underline{3})}&&\frac{\underline{4}+2}{2(\underline{4})}&&\frac{\underline{5}+2}{2(\underline{5})}&&\frac{\underline{6}+2}{2(\underline{6})}\\\\
1&+&\cfrac{5}{6}&+&\cfrac{6}{8}&+&\cfrac{7}{10}&+&\cfrac{8}{12}
\end{array}$

and surely you'd know what that is.

7 0

3 years ago

In a survey of 468 registered voters, 152 of them wished to see Mayor Waffleskate lose her next election. The Waffleskate campai

wariber [46]

Answer: b. Yes

Step-by-step explanation: Confidence Interval for a population proportion is calculated as:

p ± $z\sqrt{\frac{p(1-p)}{n} }$

where

p is the sample proportion

n is sample size

z is z-score, in this case, as it is 95%, z-score=1.96

Calculating confidence interval:

$p=\frac{152}{468}$

p = 0.3248

0.3248 ± $1.96\sqrt{\frac{0.3248(0.6752)}{468} }$

0.3248 ± $1.96\sqrt{0.000468}$

0.3248 ± 0.0425

Interval: 0.2823 < μ < 0.3673

The interval means we are 95% sure the true mean is between 0.2823 and 0.3673. As the campaign claims a proportion of no more than 0.32 of the voters wants to see Mayor Waffleskate defeated and the number is in the confidence interval, the claim is supported.

4 0

3 years ago