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seraphim [82]
3 years ago
12

Help with these questions, please!!

Mathematics
2 answers:
ivann1987 [24]3 years ago
8 0
Your rhombus is 1,960
shepuryov [24]3 years ago
6 0

Answer:

A = 94.5x cm^2

Step-by-step explanation:

To find the area of a trapezoid you have to use this equation.

A = a+b/2*h

Now plug in the numbers

12x + 15x /2*7

27x/2*7

13.5*7

94.5

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12x + 8 + 84 = 15х +9
RideAnS [48]

Answer:

x = 83/3.

Step-by-step explanation:

12x + 8 + 84 = 15х +9

Solving for x:

8 + 84 - 9 = 15x - 12x

83 = 3x

x = 83/3.

3 0
3 years ago
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love history [14]

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Step-by-step explanation:

5% of 12 is 0.60

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Vaselesa [24]
Are your numbers right?  Diana worked on her project for 613 hours, Gabe worked on it for 134 times as long as Diana, and Paula worked on her science project 34 times as long as Diana?  Assuming they are, It is false that Diana worked longer on her science project than Gabe worked on his.  Tell me if I read the question wrong, I am happy to help.
4 0
3 years ago
Is there a solution to 2x^2+7x-4=0?
IgorLugansk [536]

Answer:

x= -8    x= 1

Step-by-step explanation:

3 0
3 years ago
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Plz help me thanksssssssss
zhannawk [14.2K]
The density is 4, and the mass is 12.

So we just plug this into the equation

d = m/v

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We know that the volume must be 3 to make the equation true, because 12/4 = 3.

Therefore, the answer is F. 3 cm ^3

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