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3 years ago

Please help me :> If you can

Mathematics

2 answers:

Anna71 [15]3 years ago

6 0

Ratio of nuts to raisins is 6 to 3 . In 4 batches of trail mix there is 24 ounces of nuts & 12 ounces of raisins.the order 18,9 means 18 ounces of nuts & 9 ounces of raisins

kicyunya [14]3 years ago

5 0

I can't see the pic, can you post another one?

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Eggs were $2.05 per dozen on January 1 and $2.00 per dozen on February 1. What percent did the price decrease during January?

Irina18 [472]

This is (5/205) * 100 = 2.44%

5 0

3 years ago

Joe and 3 friends ate lunch at a cafe. They decided to split the bill evenly. The total bill was $21.84. How much was each perso

pochemuha

$5.46

21.84 divided by 4 people gives you the answer

8 0

3 years ago

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Find the sample standard deviation of the following data set, using the statistical functions on your calculator.0.2315 0.4725 0

Nonamiya [84]

Answer:

Option C) 0.2358

Step-by-step explanation:

We are given the following data set:

0.23105, 0.4725, 0.8765, 0.4865, 0.5326, 0.7976

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{3.39675}{6} = 0.566125$

Sum of squares of differences = 0.1122752556 + 0.008765640625 + 0.09633264063 + 0.006340140625 + 0.001123925625 + 0.05358067562 = 0.2784182787

$S.D = \sqrt{\frac{0.2784182787}{5}} = 0.2358$

Thus, the standard deviation for given data is

Option C) 0.2358

7 0

3 years ago

What decimal part of $2 is 40 cents?

adelina 88 [10]

Answer:

Step-by-step explanation:

1.60

6 0

3 years ago

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Two towns that are 31.5 km apart are 3 cm apart on a map. what is the scale of the map?

VLD [36.1K]

<u>Answer:</u>

1 cm : 10.5 km

<u>Step-by-step explanation:</u>

We are given that two towns are 31.5 km in real and are 3 cm apart on a map and we are to find the scale of the map.

For this, we can use the ratio method.

$\frac { 3 cm } { 1 c m } = \frac { 3 1 . 5 k m } { x }$

$x = \frac { 3 1 . 5 \times 1 } { 3 }$

$x = 1 0 . 5$

Therefore, the scale of the map would be 1 cm : 10.5 km.

8 0

3 years ago

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