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3 years ago

Dind the elapsed time the hours and minuts

Mathematics

1 answer:

olganol [36]3 years ago

6 0

Answer:

pretty sure the answer is 5 hours and 30 minutes

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Y = x^2 - 4x + 4 Find the discriminant. Determine the number of real solutions.

weqwewe [10]

Answer:

The discriminant is 0

There is 1 real solution

Step-by-step explanation:

Use the discriminant formula, D = b² - 4ac

In the equation y = x² - 4x + 4, a is 1, b is -4, and c is 4.

Plug in these values into the formula:

D = b² - 4ac

D = (-4)² - 4(1)(4)

D = 16 - 4(4)

D = 16 - 16

D = 0

So, the discriminant is 0.

With a discriminant of zero, there is one real solution.

So, the number of real solutions is 1.

8 0

3 years ago

Solve the system of linear equations by elimination. 9x+2y=39 6x+13y=−9

vodomira [7]

y = -3

x = 5

Explanation:

$9x + 2y = 39 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: (2)\\ 6x + 13y = - 9 \: \: \: \: \: \: \: \: \: \: \: \: ( - 3) \\ \\ 18x + 4y = 78 \\ - 18x - 39y = 27 \\ \\ - 35y = 105 \\ y = \frac{105}{ - 35} \\ y = - 3 \\ \\ \\ 9x + 2y = 39 \\ 9x + 2( - 3) = 39 \\ 9x - 6 = 39 \\ 9x = 39 + 6 \\ 9x = 45 \\ x = \frac{45}{9} \\ x = 5$

3 0

2 years ago

- 2x - 66 = 84 + 4x Solve please show your work

Mrac [35]

Answer:

Step-by-step explanation:

-2x-66=84+4x

collecting like terms

-2x-4x=84+66

-6x=150

divide both side by -6

-6x/-6=150/6

x=-25

4 0

3 years ago

Need help on this one please

SVETLANKA909090 [29]

Answer:

DFG

Step-by-step explanation:

It is a right triangle, and so is DEF. Thus they are similar.

4 0

3 years ago

Pleaseee helppp!!!!!

lana [24]

Answer:

x - 9

Step-by-step explanation:

(f ÷ g)(x) = f(x) ÷ g(x), that is

$\frac{x^2-19x+90}{x-10}$ ← factorise the numerator

= $\frac{(x-10)(x-9)}{x-10}$ ← cancel the common factor (x - 10) on numerator/denominator

= x - 9

8 0

3 years ago

Dind the elapsed time the hours and minuts​

Dind the elapsed time the hours and minuts