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kykrilka [37]
3 years ago
9

What is 12.3 + 4.7 estimate sum and difference

Mathematics
2 answers:
AlexFokin [52]3 years ago
5 0

Answer:

Sum- 17 Difference- 7.6

Papessa [141]3 years ago
4 0

Answer:

To find the estimated sum, round the 2 integers to the nearest whole number.

12.3----->12

4.7------->5

we round 12.3 to 12 because whenever we're asked to round a number, we always look to the digit to the right of the number, if the digit on the right is greater than or equal to 5, we round up if it's less that 5, we round down.

12+5=17

12.3-4.7

we already rounded 12.3 to 12 and 4.7 to 5 so now

12-5=7

Hope this helps

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Aubrey's dinner costed $85 she tips the waiter 30% how much did Aubrey tip for the waiter
Valentin [98]

Answer:

25.5

Step-by-step explanation:

30% of 80 is 25.5

think of it as two fractions, and use the butterfly method

30/100    ?/80

from there solve

3 0
3 years ago
Read 2 more answers
Help me on this plz I need help !!
12345 [234]

Answer:

2/1

Step-by-step explanation:

x1=1 ,y1=3

x2=2 , y2=5

then

m= 5-3/2-1= 2/1

6 0
3 years ago
During a sale at the bookstore,books sold for $3 and magazines sold for $2.50.Jan spent $16 and bought a total of 6 books and ma
quester [9]

<span>If you would like to know how many of each did Jan buy, you can calculate this using the following two equations:

b ... the number of books
m ... the number of magazines

$16 = b * $3 + m * $2.50 ... 16 = 3 * b + 2.50 * m
b + m = 6 ... b = 6 - m
__________________
</span>16 = 3 * b + 2.50 * m

<span>16 = 3 * (6 - m) + 2.50 * m</span>

16 = 3 * 6 - 3 * m + 2.50 * m

16 - 18 = - 3 * m + 2.50 * m

- 2 = - 0.50 * m     /0.50

m = 2 / 0.50

m = 4 magazines 

<span>b = 6 - m = 6 - 4 = 2 books</span>

Result: Jan bought 4 magazines and 2 books.

3 0
3 years ago
Read 2 more answers
Make a conjecture about the next item in the sequence. 6, 9, 7, 10, 8?
inessss [21]

Answer:

"The next term should be 11"

Step-by-step explanation:

If we look closely at the sequence we can see:

second term is 3 more than previous

third term is 2 less than previous

fourth term is 3 more than previous

fifth term is 2 less than previous

We can see a pattern. To get next terms, we add 3, to get next to that, we subtract 2. It goes on like this.

Since 4th term to 5th term is "subtracting 2", logically 5th to 6th term (the term we are wanting) should be "add 3". So the term after 8 would be 11

The next term would be 11

5 0
3 years ago
Does 6n-18=4(n+2) equal 1n?
Mariulka [41]

Answer:

No.

Step-by-step explanation:

If we were to fill in the slots, the equation would be...

6x3-18=4

6 times three is 18, and 18 - 18 equals 0. So the answer would not be 1.

4 0
3 years ago
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