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1 year ago

Which statement is true?

Mathematics

1 answer:

Mila [183]1 year ago

5 0

Answer:

The equation -x2 + 6x - 9 = 0 has two real solutions.

Step-by-step explanation:

${b}^{2} - 4ac = {6}^{2} - 4( - 1)( - 9) = 0$

The discriminant equals to 0, so the quadratic equation has 1 real solution.

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What are some steps for the equation 2=z-14

IgorLugansk [536]

Since the opposite operation of addition is subtraction you subtract. So you add 14 both sides and now z is by itself. finally just add 2 and 14 which is 16

5 0

3 years ago

I am confused about how to do this problem and I don't think it should be hard, but I just don't know how to approach it, so if

solniwko [45]

Answer:

a) (0.555, 0) and (6, 0)

b) r = -3 and r = 1.8

c) (0.875, 0.676)

d) (0, 1.235)

Step-by-step explanation:

Set each term in the numerator and denominator equal to 0 and find r.

In the numerator:

r = 7/8, 5/9, or 6

In the denominator:

r = 9/5, 7/8, or -3

Zeros in the numerator that aren't in the denominator are r-intercepts.

Zeros in the denominator that aren't in the numerator are vertical asymptotes.

Zeros in both the numerator and the denominator are holes.

a) (0.555, 0) and (6, 0)

b) r = -3 and r = 1.8

c) Evaluate m(r) at r = 7/8. To do that, first divide out the common term (-8r + 7) from the numerator and denominator.

m(r) = (-9r+5)² (r−6)² / ( (-5r+9)² (r+3)² )

m(⅞) = (-9×⅞+5)² (⅞−6)² / ( (-5×⅞+9)² (⅞+3)² )

m(⅞) = (-23/8)² (-41/8)² / ( (37/8)² (31/8)² )

m(⅞) = (-23)² (-41)² / ( (37)² (31)² )

m(⅞) = 0.676

The hole is at (0.875, 0.676).

d) Evaluate m(r) at r = 0.

m(0) = (-9×0+5)² (0−6)² / ( (-5×0+9)² (0+3)² )

m(0) = (5)² (-6)² / ( (9)² (3)² )

m(0) = 1.235

The m(r)-intercept is (0, 1.235).

5 0

2 years ago

The midpoint of VW is M(2, 4). One endpoint is W(1, 7). Find the coordinates of the other endpoint V.

kkurt [141]

Answer:

V(3, 1)

Step-by-step explanation:

4 0

3 years ago

Judith bought a rowboat priced at 671.65.shipping anf handling cost and additional 20% of the prices What was the total cost of

Elza [17]

Answer:

805.98

Step-by-step explanation:

671.65x.20=134.33

134.33+671.65=805.98

7 0

1 year ago

What best explains whether a triangle with side links 5 cm 13 cm and 12 cm is a right triangle

Lostsunrise [7]

Step-by-step explanation:

Pythagoras Theorem

If the sum of the squares of the smaller two sides is equal to the square if the third side then it is a right triangle

${a}^{2} + {b}^{2} = {c}^{2}$

So, (5)^2 + (12)^2

is 25 + 144 = 169

Which is equal to (13)^2 which is also 169

The sides of the given triangle follows pythagoras theorem, therefore it is a right triangle

Hope it helps:)

4 0

2 years ago

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