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3 years ago

Can I get some help please

Mathematics

1 answer:

Katen [24]3 years ago

4 0

Answer:

Step-by-step explanation:

First of all we have to use cos.

cos (30) is √3/2

so (7√3)/(√3/2)

7√3 * 2/√3 = 14√3/√3

(14√3 * √3 )/ 3

42/3 = 14

I AM ASSUMING THIS QUESTION IS NON CALC.

The answer should be 14.

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Somebody answer !!!!!

Rainbow [258]

Answer:

Step-by-step explanation:

First we have to subtract 5 from both sides

$\sqrt{x-6} +5=12\\\\\sqrt{x-6}+5-5=12-5\\\\\sqrt{x-6}=7$

Now, square both sides

$(\sqrt{x-6})^{2}=7^{2}$

x - 6 = 49

Now, add 6 to both sides

x - 6 +6 = 49 + 6

x = 55

8 0

3 years ago

The difference between an observational study and an experiment is that:

yulyashka [42]

Answer:

Step-by-step explanation:

An experiment is a study carried out in a controlled environment where the person undertaking the research hopes to understand cause and effect between the independent and dependent variables. An example of a experiment is the palovian experiment

The independent variable is the variable that the person carrying out an experiment changes or manipulates. the independent variable usually have a direct effect on the dependent variable

The dependent variable is the variable that is being measured in an experiment. It is usually affected by the independent variable

Observational study is the study where the researcher observes and measures cause and effect between independent and dependent variables without trying to control or influence the population

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3 years ago

6 boxes of 3-inch incense sticks for $22.75 is a better buy than 8 boxes for $30 and 10 boxes for $38.00

enot [183]

Answer:

Step-by-step explanation:

22.75/6 boxes is $3.79 per box

30/8 boxes is $3.75 a box

38/10 boxes is $3.80 a box

68/18=3.70 a box if you combine the last two.

So no, the 6 boxes at $3.79 a box is not a better buy.

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3 years ago

A student uses four different tape-measures to estimate the length of a ruler manufactured to be exactly 1 foot long. Which meas

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B) 12 inches would be the most accurate measurement.

Since the ruler is exactly 1 foot long, the most accurate measurement is 12 inches. 12.005 is a tempting answer, since it is the most specific/exact, but 12 inches is the most accurate, since this is equal to exactly one foot.

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3 years ago

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