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3 years ago

3x^2-5x-7 find the sum and product

Mathematics

1 answer:

Bad White [126]3 years ago

3 0

Answer:

$s = \frac{5}{3}$

$p = \frac{7}{3}$

Step-by-step explanation:

for this equation

a=3

b= -5

c = -7

The sum of equal to

$- \frac{b}{a}$

and the product is equal to

$\frac{c}{a}$

. All you do is replace the values. You can prove both of those using the quadratic formula.

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Which value of x will make the triangles similar by the SSS similarity theorem

masha68 [24]

Answer:

x = 30.

Step-by-step explanation:

For the triangles to be similar corresponding sides must be in the same ratio.

So 50/ 75 = x / 45

75x = 50*45

x = 50* 45/75

= 2 * 45 / 3

= 30. (answer).

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4 years ago

Without measuring angles what is the measure of angle A′ OB ′?

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That isn’t possible

Step-by-step explanation:

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3 years ago

the price of stock decrease $2 per day for 4 days consecutive days what was the total change in the value of the stock over the

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4 years ago

Read 2 more answers

Every orthogonal matrix is diagonalizable. O True O False

Simora [160]

Answer:

FALSE

Step-by-step explanation:

the correct answer is FALSE

A matrix is said to be orthogonal when it is multiplied by its own transpose then the matrix comes out to be Identity.

$A^T.A = I$

the basic condition for a matrix to be diagonalizable is that the matrix should be symmetric.

but an orthogonal matrix is not necessarily symmetric so, the statement is false.

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3 years ago

Part C

makkiz [27]

a = 1, b =14 and y-coordinate is 6 when x = 0.

Solution:

Let us first write the equation of a line.

Take the points are (2, 2) and (6, 10).

Slope of the line:

$$m=\frac{y_2-y_1}{x_2-x_1}$

$$m=\frac{10-2}{6-2}$

$$m=\frac{8}{4}$

m = 2

Point-slope formula:

$y-y_1=m(x-x_1)$

y - 10 = 2(x - 2)

y - 10 = 2x - 4

Add 10 on both sides,we get

y = 2x + 6

Equation of a line is y = 2x + 6.

To find (a, 8), substitute x = a and y = 8 in the equation,

8 = 2a + 6

Subtract 6 from both sides, we get

2 = 2a

a = 1

To find (4, b), substitute x = 4 and y = b in the equation,

b = 2(4) + 6

b = 8 + 6

b = 14

Substitute x = o in the equation.

y = 2(0) + 6

y = 6

The y-coordinate is 6 when x = 0.

7 0

3 years ago

3x^2-5x-7 find the sum and product​

3x^2-5x-7 find the sum and product