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Simora [160]
3 years ago
12

Find 85^2 using mental math. a. 5,625 b. 7,225 c. 6,825 d. 6,400

Mathematics
2 answers:
Nat2105 [25]3 years ago
7 0
B bro 7,225. 85x85 should do the trick:)
RSB [31]3 years ago
5 0

Answer:

7,225

Step-by-step explanation:

find 85^2 using mental math

85^2 = 85 * 85

85 can be written as 80 +5

(80+5)(80+5)

Multiply each term inside the parenthesis

Multiply 80 with 80 +5 and then we multiply 5 with 80 +5

It becomes

6400 + 400+400+ 25

Now we add all the numbers

7,225

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3 years ago
When solving negative one over three (x − 15) = −4, what is the correct sequence of operations?
iogann1982 [59]
-1/3(x - 15) = -4

step 1 : multiply both sides by -3, step 2 : add 15 to both sides

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7 0
3 years ago
The sum of a number and five divided by fifteen
natta225 [31]

Answer:

Option F

Step-by-step explanation:

Let the number be n.

Sum of a number and 5 is n + 5.

Sum of a number and five divided by fifteen is

( n + 5 ) / 15

5 0
3 years ago
Ruben how much is 340 times 100.
serious [3.7K]
340x100=34,000 hope this helps
3 0
3 years ago
Read 2 more answers
3(4-2x)=-2x<br> will make brainiest to the first two people that answer correctly with explanation
ASHA 777 [7]

Answer:

x = 3

Step-by-step explanation:

First, distribute 3 into the parenthesis:

3(4 - 2x) = -2x

12 - 6x = -2x

Next, combine your x variables by adding +6x to both side:

12 - 6x = -2x           (-6x and +6x cancel out)

   +6x    +6x

12 = 4x                     (divide 12 by 4 to get x by itself)

/4     /4

x = 3

3 0
3 years ago
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