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marissa [1.9K]
3 years ago
5

Please help me, I will give brainliest!

Mathematics
1 answer:
Annette [7]3 years ago
7 0

Answer:

It would still be congruent

Step-by-step explanation:

If you reflect a shape over the X axis the angles and side lengths wouldn't change it will stay the same and congruent.

You might be interested in
Evaluate the expression when b=4/5 and c=-3/8<br><br> 2c-b
timurjin [86]

Answer:

-1/20

Step-by-step explanation:

2(3/8) - 4/5

6/8 - 4/5

30/40 - 32/40

-2/40

-1/20

6 0
3 years ago
How do I solve this?
expeople1 [14]

Answer:

4.5

Step-by-step explanation:

The formula for solving area in parallelograms is base x height.

The base is 2.5 and the height is 1.8

2.5x1.8=4.5

4 0
3 years ago
Is 28/81 less than 7/9.Is 28/81 less than 4/9?
lesantik [10]
28/81 is less than 7/9

28/81 is less than 4/9

The common denominator is 81, so you say 9 can go into 81 nine times, so you multiply 9 by the numerator, so 7/9 is now 63/81 an 4/9 is now 36/81
8 0
3 years ago
Find the number of real number solutions for the equation. x^2+5x+7=0
koban [17]

Given a quadratic equation ax^2+bx+c=0, we define the discriminant as

\Delta = b^2-4ac

The number of real solutions of the equation depend on the sign of \Delta:

  • If \Delta>0 the equation has two solutions
  • If \Delta=0 the equation has one double solution
  • If \Delta the equation has no real solutions

In this case, we have

\Delta = 25-28=-3

And so this equation has no real solutions.

7 0
3 years ago
Find the value of x and y​
Svetllana [295]

Answer:

x = 1

y = -3

Step-by-step explanation:

cos(pi) = -1

so many ways :

sqrt(0.5/2) = sqrt(0.5/2 × 8/8) = sqrt(4/16)

= sqrt(0.5/2 × 18/18) = sqrt(9/36)

= sqrt(1/4) = 1/2

"nicest" approach (all integers) :

3x² = sqrt(9)

3x² = 3

x² = 3/3 = 1

x = 1

2y = sqrt(36)

2y = 6

y = 6/2 = 3

one of them has to be negative (because cos(pi) = -1), so it has to be y, because 3x² cannot be negative with real numbers.

so, y = -3

-1 × 3×1²/(2×-3) = sqrt(0.5/2) = 1/2

-1 × 3/-6 = 1/2

3/6 = 1/2

1/2 = 1/2

correct

4 0
2 years ago
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