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Softa [21]
2 years ago
9

Three times the sum of four and a number is twice the number.

Mathematics
2 answers:
klasskru [66]2 years ago
8 0

Answer:

Step-by-step explanation:

Three times four = 12

And if the second number is 2 then

12 x 2 = 24 which is twice of 12

Anon25 [30]2 years ago
3 0

Answer:

24

Step-by-step explanation:

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Marie has a rectangular board 12 inches by 16 inches around which she wants to put a uniform border of sherlls. if she has enoug
Ede4ka [16]
Area of rectangular board = length (inches) x width (inches) = 12" x 16" = 192 in²

Area of the border is given as 128 in²

Adding the area of the board and the border gives (192 + 128)in² = 320 in²

Set this up as the algebraic equation (x + 12)(x + 16) = 320 and solve for x:

Remember to use the FOIL method, which is multiplying the terms in the order of first, outer, inner, last.

x² + 12x + 16x + 192 = 320

x² + 28x + 192 - 320 = 0

x² + 28x - 128 = 0

solve for the two x values:

(x + 32)(x - 4) = 0, and knowing we only need the positive x value

x = 4 or 4 inches is the width of the border



5 0
3 years ago
Solve for x in quadratic equation if x(2x-1)=1 , can you please help me please ​
kumpel [21]

Answer:

x=1 or -1/2

Step-by-step explanation:

The value of x is 1 or -1/2

8 0
3 years ago
(01.05 MC)
Dennis_Churaev [7]

Answer:

least to greatest : 14/9 , sqrt 7, sqrt 13, sqrt 40, 4^3

Step-by-step explanation:

7 0
3 years ago
Multiply using mental math find the product.tell which strategy you used.
andreyandreev [35.5K]
Well nine times 199 is 1,791but im not sure if thats what its asking
3 0
3 years ago
I need help please anybody
erma4kov [3.2K]
Answer: area= 4.7

Area=pi*r^2=3.14*1.5=4.71=4.7 (nearest tenth)
6 0
3 years ago
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