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3 years ago

X – 81 = 1 X = ? Pleaseee help me I’m strugglinggg

Mathematics

2 answers:

nikdorinn [45]3 years ago

8 0

82-81=1

This is the right answer

Firdavs [7]3 years ago

6 0

Answer:

$\huge{ \fbox{ \sf{82}}}$

Step-by-step explanation:

$\star{ \text{ \: x - 81 = 1}}$

$\text{Step \: 1 \: : Move \: 81 \: to \: right \: hand \: side \: and \: change \: it's \: sign}$

$\hookrightarrow{ \sf{x = 1 + 81}}$

$\text{Step \: 2 \: : Add \: the \: numbers : 1 \: and \: 81}$

$\hookrightarrow{ \sf{x = 82}}$

The value of x is 82

Hope I helped!

Best regards! :D

~ $\sf{TheAnimeGirl}$

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The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. Th

Mila [183]

Answer:

The calculated t-value is t=0.47.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>"Americans typically eat quickly and do not spend time enjoying their meal. A researcher plans to test if those trained in mindfulness will take more time to enjoy their meal (that is, they will spend more time eating than the general population). The general population spends an average of 68 minutes per day combined eating their three meals. The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. The sample mean for those trained in mindfulness equals 74; the SS = 150. What is the calculated t-value? Round your answer to two decimal places."</em>

The degrees of freedom are (n-1)=(16-1)=15

The standard deviation is:

$s=\sqrt{\frac{SS}{n-1}}=\sqrt{\frac{150}{16-1}}=\sqrt{10}=3.16$

The t-value can be calculated as:

$t=\frac{M-\mu}{\sigma/\sqrt{n}} =\frac{74-68}{3.16/\sqrt{16}} \\\\t=\frac{6}{3.16*4}=\frac{6}{12.64}= 0.47$

4 0

3 years ago

2b plus 4a minus a minus 2 plus 12b

jarptica [38.1K]

The value of the expression 2b plus 4a minus a minus 2 plus 12b is 3a + 14b - 2.

Expression:

An expression is defined as the a combination of operators, constants and variables. And it may consist of one or more operands, and zero or more operators to produce a value.

Given,

Here we have the statement "2b plus 4a minus a minus 2 plus 12b".

Now, we have to find the simplified form of this statement.

In order to find the simplified form,

First we have to convert the statement into expression form, then we get

2b plus 4a minus a minus 2 plus 12b = 2b + 4a - a - 2 + 12b

Now, we have to combine the like terms, then we get,

=> (2b + 12b) + (4a - a) - 2

Perform the appropriate arithmetic operations, then we get the simplified form of the expression as,

=> 14b + 3a - 2

Now, we have to arrange them in order then we get,

=> 3a + 14b - 2

To know more about Expression here.

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1 year ago

A sample of lake water contains 150grams of salt. If 30% of the water sample is salt, find the number of grams the entire sample

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Answer:

500 grams

Step-by-step explanation:

Let's say that the total number of grams of the sample is x. We know that 30% of x is salt and we also know this quantity is 150 grams. So, we can write this as:

30% * x = 150

Remember that % is simply "out of 100", so 30% = 30/100 = 0.30. Then:

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Divide both sides by 0.30:

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3 years ago

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I believe that x=20 from the math i did hopefully its helpful.

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3 years ago

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The answer would be 10^-3

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