MATHEMATICS MIDDLE SCHOOL

Is it true yes or no

Answers

Answer 1

Answer:

Answer:

No it's false 2.1 > 2.09

Step-by-step explanation:

Answer 2

Answer: 2.2 is greater than 2.09 .

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How many degrees is in an acute angle?

Answers

Answer:

89 degrees or less

Step-by-step explanation:

90 degrees, right angle

91 degrees and over is an obtuse angle

180 degrees is a straight line

Answer:

less than 90 degrees

Step-by-step explanation:

What is 4 hours and 39 mins before 7:53 p.m

Answers

4 hours and 39 minutes before 7:53 p.m. is 6:34 p.m.

To find the time 4 hours and 39 minutes before 7:53 p.m., we can subtract the given time from the duration.

Step 1: Convert 4 hours and 39 minutes into minutes.

4 hours = 4 * 60 = 240 minutes

Total duration = 240 minutes + 39 minutes = 279 minutes

Step 2: Subtract the duration from the original time.

7:53 p.m. - 279 minutes

Subtract the minutes first:

53 minutes - 279 minutes = -226 minutes

Now, since the result is negative, we need to "borrow" an hour from the original time:

7 p.m. - 1 hour = 6 p.m.

So, 4 hours and 39 minutes before 7:53 p.m. is 6:34 p.m.

To know more about hours:

brainly.com/question/53809

#SPJ2

Its 3:14 p.m what you do is simply subtract 7:53 pm from 4:39 pm or you get a clock and count backwards

The number of students in the period 7 study hall at jin's school is 4 times the number of students in jin's home room. how many students are in the study hall if there are 16 students in jin's home room.

Answers

1/4 the students in study hall (per 7) = 16

16*4 = 64 students in study hall.

Hope I helped! (Pick my answer as brainliest!)

Factor and find the roots of y= 4×^2+4×-15

Answers

factor
=(2x - 3)(2x + 5)

roots (zero)
2x - 3 = 0
2x = 3
x = 3/2
x = 1.5

2x + 5 = 0
2x = -5
x = -5/2
x = -2.5

Find the sum and express it in simplest form (5n^3+7n+2)+(-n^3-6n+5)

Answers

Answer:

4n^3 +n +7

Step-by-step explanation:

(5n^3+7n+2)+(-n^3-6n+5)

I like to line them up vertically

5n^3+7n+2

-n^3 -6n+5

-----------------------

4n^3 +n +7

Answer:

$\boxed{\bold{4n^3+n+7}}$

Step By Step Explanation:

Remove Parenthesis: (a) = a

$\bold{5n^3+7n+2-n^3-6n+5}$

Group Like Terms

$\bold{5n^3-n^3+7n-6n+2+5}$

Combine Similar Elements: $\bold{7n-6n=n}$

$\bold{5n^3-n^3+n+2+5}$

Combine Similar Elements: $\bold{5n^3-n^3=4n^3}$

$\bold{4n^3+n+2+5}$

Add: $\bold{2+5=7}$

$\bold{4n^3+n+7}$

➤ $\boxed{\bold{Mordancy}}$

the number of girls and boys in math class totals 27. how many girls are there if the of girls is 3 more than twice the number boys?

Answers

Answer: 15 girls

Step-by-step explanation:

27 - 3 = 24

24/2 = 12

12 boys

12 + 3 = 15

15 girls

15+ 12 = 27

Answer: 15

Step-by-step explanation: Personally, I would try finding the number of boys first and then subtract the number of total students by the number of boys. To find the boys, you need to subtract three from 27 since those 3 are girls which leaves you with 24. It says there is half the number of boys than girls when you subtract 3 so 24 divided by 2 is 12. The number of boys is 12 so now all you have left to do is subtract 27-12 to find the number of girls, which is 15. I hope this helped you and sorry if it’s really long :)

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