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2 years ago

9

: adam and melissa went fly-fishing and caught a total of 32 salmon. melissa caught three times as many salmon as adam. how many

salmon did adam catch?

1 answer:

nadya68 [22]2 years ago

5 0

A=Adam
m= Melissa

a+m = 32
m= 3a
Then 3a + a = 32 or 4a =32 then a = 8

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The 11th grade class at Red Hook high school was surveyed about the types of music they liked. Of those surveyed, 64% said they

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22% liked neither.

Step-by-step explanation:

Given,

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To find out the percentage of those liked neither.

Now,

Let, total number of student = 100

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So,

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2 years ago

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zysi [14]

Answer:

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The p value for this case would be given by:

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Step-by-step explanation:

Information given

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$\hat p=0.30$ estimated proportion of people who thought the economy is getting worse

$p_o=0.32$ is the value that we want to verify

$\alpha=0.05$ represent the significance level

z would represent the statistic

$p_v$ represent the p value

Hypothesis to test

We want to check if the true proportion of interest is equal to 0.32 or not.:

Null hypothesis: $p=0.32$

Alternative hypothesis: $p \neq 0.32$

The statistic would be given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing we got:

$z=\frac{0.30 -0.32}{\sqrt{\frac{0.32(1-0.32)}{750}}}=-1.174$

The p value for this case would be given by:

$p_v =2*P(z$

For this case since the p value is higher than the significance level given we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not significantly different from 0.32 or 32 %

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2 years ago

Mrs. Melanie Lazo pays Php 15.75 for each hair clip to its supplier. She decided to adds markup of Php 3.15. What is the markup

malfutka [58]

Answer:

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1 year ago

Triangle $ABC$ has altitudes $\overline{AD},$ $\overline{BE},$ and $\overline{CF}.$ If $AD = 12,$ $BE = 14,$ and $CF$ is a posit

Shalnov [3]

Answer:

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Given: Δ ABC

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OR area = 0.5 BE * AC ⇒ (2)

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By equating (1) and (3)

∴ 0.5 CF * AB = 0.5 AD * BC

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By equating (1) and (2)

0.5 BE * AC = 0.5 AD * BC

∴ $\frac{AC}{BC} = \frac{AD}{BE} =\frac{12}{14} =\frac{6}{7}$ (5)

We should know that about the relation between the sides of the triangle:

The sum of two sides will be greater than the third side

So, AB < BC + AC ⇒ divide both sides by BC

∴ $\frac{AB}{BC} < 1+\frac{AC}{BC}$

By substitution from (5) with AC/BC

∴ $\frac{AB}{BC}$

∴ $\frac{AB}{BC}$

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But CF is a positive integer

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2 years ago