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densk [106]
3 years ago
12

What is the perimeter of the figure a=3?

Mathematics
1 answer:
avanturin [10]3 years ago
8 0

Answer: 18

Step-by-step explanation:

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Which expression is equivalent to (3x2-7) A) (2x2-11)-(x+4) B) (5x²-6)- (2x2-1) C) (10x² - 4)-(7x2+3 D) (15x2 +8)- (18x2+1)
Vikki [24]

Answer: (c)

Step-by-step explanation:

Given

The expression is 3x^2-7

checking options, for (a)

\Rightarrow 2x^2-11-x-4\\\Rightarrow 2x^2-x-15

option (a) is incorrect

for (b)

\Rightarrow 5x^2-6-2x^2+1\\\Rightarrow 3x^2-5

option(b) is incorrect

for (c)

\Rightarrow 10x^2-4-7x^2-3\\\Rightarrow 3x^2-7

option (c) is matching with the given expression.

8 0
3 years ago
Diane purchase 12 handkerchiefs for a certain amount of money.Using m for the cost of one handkerchief, which expression illustr
exis [7]
If Diane purchased 12 handkerchiefs for a set amount of money, then the equation would just be the amount of items that Diane bought times the amount of money that one of those items costs. We use a variable (in this case, <em>m</em>) to represent the amount of money one handkerchief costs, so the appropriate expression to represent this would be

12m

Option C is your correct answer choice.
Hope that helped! =)
7 0
3 years ago
Read 2 more answers
Solve proportion z-3/8=3/10
Maru [420]

10(z-3) = 3*8

10z-30 = 24

add 30 to both sides

10z = 54

divide both sides by 10

z = 5.4

but, if you meant z-  3/8, then

z = 27/40

3 0
3 years ago
What is the factor of 32y + 56
Dahasolnce [82]

Answer: i believe the answer is 104

Step-by-step explanation:

3 0
4 years ago
I NEED HELP PLEASE, IM STUCK ON MOST OF THEM
azamat

Answer: look it up

Step-by-step explanation: Lollll

6 0
3 years ago
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