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Kamila [148]
3 years ago
11

Which triangles are similar?

Mathematics
1 answer:
Anastaziya [24]3 years ago
4 0

Answer:

i b and d

Step-by-step explanation:

i say this because i see that b the bottom of it is longer that the

top witch causes the number diffrence same for d but but the top is longer

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Solve x2+12x=-11 by completing the square . Which is the the solution set of the equation?
Dmitriy789 [7]

Answer:

{- 11, - 1 }

Step-by-step explanation:

Since the coefficient of the x² term is 1 , to complete the square

add (half the coefficient of the x-term )² to both sides

x² + 2(6)x + 36 = - 11 + 36 ← complete the square on the left side

(x + 6)² = 25 ( take the square root of both sides

\sqrt{(x+6)^2} = ± \sqrt{25}

x + 6 = ± 5 ( subtract 6 from both sides )

x = - 6 ± 5

x = - 6 + 5 = - 1 or x = - 6 - 5 = - 11




8 0
3 years ago
Read 2 more answers
Please help me with my algebra homework?
USPshnik [31]

Answer:

Step-by-step explanation:

a=1

r=-6/1=-6

S_{7}=a\frac{1-r^n}{1-r} =1\frac{1-(-6)^7}{1-(-6)} \\=\frac{1+6^7}{1+6} \\=\frac{1+279936}{7} \\=\frac{279937}{7} \\=39991

4 0
3 years ago
True or false pls no guessing
marshall27 [118]

Answer:

True

Step-by-step explanation:

5 X 5 X 5 = 125 because 5 X 5 would be 25. And 25 X 5 would be 125.

6 0
2 years ago
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I will give the brainiest answer
Airida [17]

Answer:

D

Step-by-step explanation:

If you draw the shape in D and assemble it you will get the answer

btw please mark brainliest

5 0
3 years ago
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If 2x^2-5x+7 is subtracted from x^2+2x-11, what is the leading coefficient?
guajiro [1.7K]

Answer:

-1

Step-by-step explanation:

2x² - 5x + 7 is subtracted <em>from </em>x² + 2x - 11, so

(x² + 2x - 11) - (2x² - 5x + 7)

x² + 2x - 11 - 2x² + 5x -7 (Distribute the negative)

-x² + 7x - 18 (Combine like terms)

The leading coefficient is the coefficient of the first term, so it is -1.

3 0
2 years ago
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