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djyliett [7]
3 years ago
7

Hey can u guys help me out please

Mathematics
1 answer:
Vinil7 [7]3 years ago
5 0
Yes they are congruent
Congruent means (In identical form)
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A rectangle has a length of (3.2a + 0.18b)centimeters.The width is half the length. Sasha writes the expression (12.8a + 0.72b)
jeka94
The width is half the length, so is
  width = (1/2)*length
  width = (1/2)*(<span>3.2a + 0.18b) cm
  width = (1.6a +0.09b) cm

The perimeter of the rectangle is twice the sum of length and width.
  perimeter = 2*(length + width)
  perimeter = 2*((3.2a +0.18b) cm + (1.6a +0.09b) cm)
  perimeter = 2*(4.8a +0.27b) cm)
  perimeter = (9.6a +0.54b) cm

Sasha did not get this answer, so apparently ...
  her reasoning was not correct.</span>
8 0
3 years ago
3(x + 1) = 5(x - 2) + 7 x=?
alukav5142 [94]
1.4 repeating? 


3x+3=5x-10+7x
3x+3=12x-10
3=9x-10
13=9x
1.4 repeating=x
4 0
3 years ago
Read 2 more answers
2.
Gekata [30.6K]

Answer: the system has no solution.

Step-by-step explanation:

\displaystyle\\

\left \{ {{x^2y=16\ \ \ \ \ (1)} \atop {x^2+4y+16=0\ \ \ \ \ (2)}} \right. .\\

Multiply\  both\  sides\  of\  the\  equation\ (2)\   by\  y\  (y\neq 0):\\

x^2y+4y^2+16y=0\\

We\  substitute\  equation\  (1)\  into\  equation\  (2):\\

16+4y^2+16y=0\\

4y^2+16y+16=0\\

4*(y^2+4y+4)=0\\

4*(y^2+2*y*2+2^2)=0\\

4*(y+2)^2=0\\

Divide\  both\  sides\  of\  the \ equation\  by\  4:\\

(y+2)^2=0\\

(y+2)*(y+2)=0\\

So,\ y+2=0\\

y=-2.\\

\displaystyle\\We\  substitute\  the\  value\  of\  y\  into\  equation\  (1):\\x^2*(-2)=16\\Divide\  both\  sides\  of\  the \ equation\  by\  -2:\\x^2=-8\\x^2\geq 0\\ Hence,\ the\ system\ has\ no\ solution.

7 0
2 years ago
What is 12/25 as a decimal?
svp [43]
0.48- Use a calculator if you need it. Use your multiples if needed. Hava a good day!
6 0
3 years ago
Read 2 more answers
Evaluate if m = –6 and n = –2.<br><br> 2m ÷ n<br><br> –6<br><br> –4<br><br> 4<br><br> 6
Bumek [7]

Answer:

6

Step-by-step explanation:

Put the values of m and n into the equation.

2m ÷ n = 2(-6) ÷ -2

Evaluate.

2(-6) ÷ -2 = -12 ÷ -2

Further evaluate.

-12 ÷ -2 = 6

5 0
3 years ago
Read 2 more answers
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