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scoundrel [369]
3 years ago
6

Circle the problems below that you could use mental math to solve.

Mathematics
1 answer:
SashulF [63]3 years ago
4 0
I think this is more of an opinion question. What someone could solve mentally may not be the same as someone else's.If it were my worksheet, I'd circle all of them but it may be different for you.
At your level, I'd probably circle:
54 - 10
93 - 20
and 39 - 2
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Need help plz <br> How do you do this?
gavmur [86]

Answer:

See description below.

Step-by-step explanation:

A distance -time graph of Maria's journey would look like a very steep line with slope 100 meters/1 minute until minute 4. At minute 4, Maria stopped to talk so it would like a horizontal flat line at that same distance for 3 minutes. This means at minute 7, Maria began walking again. From minute 7 on would be a positive line heading up with a slope of 75 meters/ 1 minute.

3 0
3 years ago
What is -2m^2-2mn+8-10m+10n+mn+4n^2-5n simplify to
Mrac [35]
Find like terms and group them
3n and 5n are same and 4n^2 and 4n^2 are same
but 3mn and 5n are not and 3n and 2n^3 are not

group like terms
(-2m^2)+(-2mn+1mn)+(8)+(-10m)+(10n-5n)+(2n^2)
add like terms
(-2m^2)+(-mn)+(8)+(-10m)+(5n)+(2n^2)
-2m^2+2n^2-10m+5n-mn+8 is simplest form

4 0
3 years ago
Find the % of change. Original price: $185 New price: $160
mojhsa [17]

Answer:

-13.51

Step-by-step explanation:

work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100. % increase = Increase ÷ Original Number × 100.,


so, -13.51

8 0
2 years ago
....................... Plz​
vesna_86 [32]

Answer:

2/5 (x-1)=15 (x=7)

7 (1+3m)=49 (m=2)

6 0
2 years ago
Read 2 more answers
1/2=4p what does p equal
disa [49]
P = what times 4 equals 1/2 = 1/8
3 0
3 years ago
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