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strojnjashka [21]
2 years ago
7

You earn $80 for working 10 hours. How much do you earn for 2.5 hours? (RATIOS)

Mathematics
2 answers:
enot [183]2 years ago
6 0

Money : Hours

$80 : 10

So let x be the money you earn for 2.5 hours.

x : 2.5

You just need to do this: 80/(10/2.5)

= 80/4

= 20

So you earn $20 for 2.5 hours.

lora16 [44]2 years ago
4 0

Answer:

$20

Step-by-step explanation:

To solve this problem, you need to first find the amount earned per hour (x), then multiply that number by 2.5 hours.

x = 80/10

x = 8

8*2.5 = 20

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Test the hypothesis using the​ P-value approach. Be sure to verify the requirements of the test. Upper H 0​: pequals0.6 versus U
kow [346]

Answer:

Step-by-step explanation:

From the given information:

The null and the alternative hypothesis can be well written as:

H_o:P=0.6

H_1:P>0.6

Given that:

n = 200

x = 135

Alpha ∝ = 0.05 level of significance

Then;

⇒ n \times p\times (1-P)

= 200 × 0.6 × (1 -0.6)

= 200 × 0.6 × 0.4

= 48 ≥ 10

The sample proportion \hat P = \dfrac{x}{n}

= \dfrac{135}{200}

= 0.675

The test statistics Z = \dfrac{\hat P - P}{\sqrt{ \dfrac{P(1-P)}{n} }}

Z = \dfrac{0.675 - 0.6}{\sqrt{ \dfrac{0.6 \times 0.4}{200} }}

Z = \dfrac{0.075}{\sqrt{ \dfrac{0.24}{200} }}

Z = 2.165

The P-value = P(Z > 2.165)

= 1 - P(Z < 2.165)

From the z tables

= 1 - 0.9848

= 0.0152

Reject the null hypothesis since P-Value is lesser than alpha. ( i.e. 0.0152 < 0.05).

Thus, there is enough evidence to conclude that the value of the population proportion is greater than 0.6

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3 years ago
Tile costs $28 per square meter. how much will it cost to cover the counter top with new tile?( 4.36 square meters)
marta [7]
Tile costs $28 per square meter. how much will it cost to cover the counter top with new tile?( 4.36 square meters)

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Answer:

2

Step-by-step explanation:

Given the question :

Serena wants to create snack bags for a trip she is going on. She has 6 granola bars and 10 pieces of dried fruit. If the snack bags should be identified without any food leftover, what is the greatest number of snack bags Serena can make?

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Since the snackbag is to be designed in such a way that there should be no food leftover, the greatest number of snack bags Serena can make could be obtained by getting the highest common factor of (6 and 10)

____6____10

2___3____5

Here, the highest common factor of 6 and 10 is 2

Hence, the greatest number of snack bags she can make is 2.

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