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inessss [21]
3 years ago
14

Which expressions are equivalent to j+j + 2k

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

Answer:

One of the equivalent expressions is 2(j+k).

Step-by-step explanation:

In the expression

j+j+2k

there are 2 j's ;therefore, the expression can be rewritten as

2j+2k,

and using the reverse distribute property which says

ax+ay=a(x+y),

we rewrite our expression as

2j+2k = \boxed{2(j+k).}

Leokris [45]3 years ago
4 0

The correct answer is:

None of the above

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Find the area please. Round to the nearest tenth if necessary.
sergiy2304 [10]

Answer:

48.35

Step-by-step explanation:

6*6= 36

(6*3/2)=9

1/2*3.14=1.57

1/4*3.14= 1.78

36+9+1.57+1.78

4 0
3 years ago
jill sold half her comic books then bought 16 more she now has 36 how many did she start with? help me plz ...?
Alinara [238K]
Alright! In order to solve this you have to work backwards. So, you know her end total is 36. And to get to that she bought 16 books. So:

36 - 16 = 20.

So, after she sold half her books she had 20. To find how many she started with you do the opposite of dividing by 2, multiplying by 2. So:

20 x 2 = 40.

She started with 40 books.
7 0
3 years ago
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help with either of these questions pleaseee at least one of them I’m so confused rn I’d really appreciate it and will brainlist
olga_2 [115]
1. a. 35 = 3J - 1
b. n = A + 2

2. a. P = 250 + 10n
b. P = 250 + 10(20) = $450
7 0
2 years ago
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the parking space outside sky towers measures 2x-1 meters x+2 meters . what is rhe cost of cleaning the parking area if the clea
antiseptic1488 [7]

Answer:

Rs 100x² + 150x - 100

Step-by-step explanation:

Area of the parking space = Length * Width

Area of the space = (2x-1)(x+2)

Expand

Area of the space = 2x² + 4x - x - 2

Area of the space = (2x²+3x - 2) sq. m

Since 1sq.m = Rs 50'

(2x²+3x - 2) sq. m= z

z = 50 (2x²+3x - 2)

z = 100x² + 150x - 100

hence the cost of the parking spsce is Rs.100x² + 150x - 100

4 0
3 years ago
Jason had $32. He spent all the money on buying 4 CDs for $x each and 2 magazines for $y each. If Jason would have bought 5 CDs
larisa86 [58]
. The student's conclusion is incorrect because the solution to the system of equations 4x + 2y = 32 and 5x + 2y = 36 is (4, 8).
B is right option
4x + 2y = 32
5x + 2y = 36 subtracting
-x=-4
x=4
4(4)+2y=32
16+2y=32
2y=16
y=8
hope this helps
4 0
3 years ago
Read 2 more answers
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