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2 years ago

Need tha answer explained

Mathematics

2 answers:

rusak2 [61]2 years ago

8 0

Answer:

It is 77.2, so your anwer is correct.

Step-by-step explanation:

Finding decimal divided by decimal too hard? Don't worry, I've got your back! To do division, you can do it the hard way by just dividing it, but there's something more simple.

Move the dividend's decimal point to the right until it's not a decimal. Do the same with the divisor, but it depends on how many decimal places on the dividend was moved by. So in this case, you move it by 2 decimal places for BOTH! Then you just simply divide it. It gives you the same answer.

BTW if I didn't make my explanation clear, please comment.

almond37 [142]2 years ago

6 0

Answer:

Bri what do you mean explanation your answer is correct

Please mark me brainliest thanks

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Pls help i am on a timer

stich3 [128]

Answer:

$x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}$

Step-by-step explanation:

Given;

x² - 2x - 1 = 0

Solve by completing the square method;

⇒ take the constant to the right hand side of the equation.

x² - 2x = 1

⇒ take half of coefficient of x = ¹/₂ x -2 = -1

⇒ square half of coefficient of x and add it to the both sides of the equation

$x^2 + (-1)^2 = 1 + (-1)^2$

$(x-1)^2 = 1 + 1\\\\(x-1)^2 = 2\\\\$

⇒ take the square root of both sides;

$x-1 = +/- \ \ \sqrt{2} \\\\x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}$

Therefore, option B is the right solution.

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2 years ago

Which of these graphs represents a function?

Naddik [55]

Answer:

Step-by-step explanation:

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2 years ago

Dave surveyed 80 7th-graders and 90 8th-graders. He found that about 75% of the 7th-graders like pop music, while 80% of the 8th

dimaraw [331]

<u>8th Grade: </u>90 x 0.80 = 72

<u>7th Grade:</u> 80 x 0.75 = 60

Conclusion: 8th Graders like pop music more because 72 out of the 90 in 8th grade Dave surveyed enjoy it, compared to the 60 out of 80 in 7th grade that enjoyed it.

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2 years ago

Can someone help me with this? thanks

Sergio039 [100]

Answer:

least to greatest:

-11.7 -11.4 20/40 11.6

6 0

3 years ago

Read 2 more answers

The hour hand of a clock moves −30° every hour. How many degrees does it move in 2&1/5 hours?

ad-work [718]

Answer:

ok is very easy

Step-by-step explanation:

so 1/5 of an hour is 12 mins

and 2 is 2 hrs so that 120 mins

now add 120+12=132

132 x -30 degrees

The answer to that is 132 x -30 =

-3960 sorry if its wrong and if you get a second try put -69.1150384 rad

I think sorry if you get it wrong have a good day

6 0

2 years ago