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4 years ago

Greg added 3 hundreds plus 2 tens and got 32. What did he do wrong?

2 answers:

8 0

300 (3 hundreds)+20 (2 tens) should equal 320. Greg confused the hundreds place with the tens place and the tens place with the ones place, what he thought was : 3 tens plus 2 ones equals 32. Answer: He got hundreds confused with tens, and tens confused with ones.

natta225 [31]4 years ago

4 0

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Simplify the expression <br>(2x-6) - (4x+4)

ollegr [7]

Answer:

-2x - 10

Step-by-step explanation:

(2x-6) - (4x+4) multiply (4x+4) by -1 -1(4x + 4) = -4x - 4

2x - 6 - 4x - 4 Re-arrange

2x - 4x - 6 - 4

-2x - 10

5 0

3 years ago

The rectangle shown as a perimeter of 70 cm and the given area. It’s length is 8 more than twice it’s width. Write and solve a s

Olenka [21]

width of the rectangle = b = x

length of the rectangle = l = 8 + 2x

Perimeter of the rectangle = 70cm

Also, perimeter of the rectangle = 2(l + b)

70 = 2[x + (8 + 2x)]

70 = 2(x + 8 + 2x)

70 = 2(3x + 8)

70 = 6x + 16

70 - 16 = 6x

54 = 6x

54/6 = x

9 = x

Therefore, b = x

b = 9cm

l = 8 + 2x

I = 8 + 2×9

I = 8 + 18

I = 26cm

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3 years ago

Select all the irrational numbers

tiny-mole [99]

I think 2. 3. 4. :)))))))))

5 0

3 years ago

For question 2 not 3 :)

BabaBlast [244]

Answer:

2.5

Step-by-step explanation:

6 0

4 years ago

Help plz i need this done asap

jok3333 [9.3K]

To find the percent change of something you need to set up a proportion.

amount change (original - new) over new number

x over 100

then cross multiply. Example

25 x
----- ------
50 100

25 x 100 = 2500
2500/50 = 50

So the answer is 50%

6 0

4 years ago