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3 years ago

Pls help I will mark brainleist!!show all work!

Mathematics

1 answer:

vladimir1956 [14]3 years ago

7 0

Answer:

Pants cost $20 and tee-shirts $10.

Step-by-step explanation:

For Sam 3t + 2p = 70

For Jessica 4t + p = 60

Take 2 times Jessica's equation and subtract Sam's

8t + 2p = 120

3t + 2p = 70

5t = 50

t = 10

3(10) + 2p = 70

30 + 2p = 70

2p = 40

p = 20

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Is 7/10 less than 2/4?

lilavasa [31]

Answer:

Step-by-step explanation:

7/10 is 0.7

2/4 is 0.5

0.7>05

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3 years ago

Read 2 more answers

Which of the following statements correctly explains the meaning of the term "95% confidence" in the confidence statement? The i

12345 [234]

Answer:

The interval 52% to 58% is based on a procedure that includes the true population value 95% of the time.

Step-by-step explanation:

x% confidence interval:

A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.

95% confidence

We are 95% sure that the interval contains the true mean/proportion, and thus, the correct option is:

The interval 52% to 58% is based on a procedure that includes the true population value 95% of the time.

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3 years ago

It took 48 minutes to drive downtown An app estimated it would be less than that If the error was 20% what was the apps estimate

Zina [86]

Answer:

<em>The app's estimate was 38.4 minutes.</em>

Step-by-step explanation:

Suppose, the app's estimated time was $t$ minutes.

Given that, it took 48 minutes to drive downtown. So, <u>the error in estimated time by the app</u> $=(48-t)$ minutes.

It is also given that the error was 20%. So, <u>the amount of error</u> $= (48*0.20)=9.6$ minutes.

Thus, the equation will be......

$48-t= 9.6\\ \\ -t=9.6-48\\ \\ -t=-38.4\\ \\ t= 38.4$

So, the app's estimate was 38.4 minutes.

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3 years ago

A 16-ounce bottle of orange juice says that it contains 200 milligrams of vitamin C, which is 250% of the daily recommended dosa

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80 milligrams is the amount of vitamin C that is considered to be 100% of the daily recommended requirement for adults.

<h3>What is the daily recommended dosage of vitamin C for adults? </h3>

Parameter

The amount of liquid included in the bottle is 16 ounces.
The vitamin C content of the bottle comes to a total of 200 milligrams.

Since the orange juice container that has a capacity of 16 ounces states that it has 200 milligrams of vitamin C, this means that it fulfills 250% of an adult's recommended daily requirement for vitamin C. Then, for one hundred percent of the daily allotment,

As a result, we are able to draw the conclusion that the amount of vitamin C that is considered to be 100% of the daily recommended requirement for people is 80 milligrams.