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Mathematics

2 answers:

rosijanka [135]3 years ago

4 0

X = -3 it's practically the y intercept in which x is equals 0

Kipish [7]3 years ago

3 0

X=-3 so it's practically y

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Find x, round your answer to the nearest integer.

Makovka662 [10]

Answer:

B. 8

Step-by-step explanation:

cos37° = 4/5 = x/10

=> 4(10) = 5x

=> x = 40/5

=> x = 8

The correct option is B.

8 0

2 years ago

17/13 = y/10 solve for y and round to the nearest tenth

11Alexandr11 [23.1K]

$\frac{17}{13} = \frac{y}{10}$

$17 \times 10 = y \times 13$

$170 = 13y$

$y = \frac{170}{3} = 56.6666....$

56.6666... to the nearest tenth is 57.

4 0

3 years ago

X+y+z =4

cestrela7 [59]

Akar akar persamaan kuadrat 2x² - 3x -1 = 0 adalah x1 dan x2. Persamaan kuadrat baru yang akar akarnya satu lebih kecil dari dua kali akar akar persamaan kuadrat di atas adalah ........A.x² - x - 4 = 0B.x² + 5x - 4 = 0C.x² - x + 4 = 0D.x² + x + 4 = 0E.x² - 5x - 4 = 0Jawaban : A
Penyelesaian :
Akar-akar persamaan lama : x1 dan x2

Akar-akar persamaan baru : xA dan xB
 xA = 2x1 - 1
 xB = 2x2 - 1
 xA + xB = (2x1 - 1) + (2x2 - 1)
 = 2 (x1 + x2) - 2
 = 2 () - 2
 = 3 - 2
 xA + xB = 1

 xA . xB = (2x1 - 1) (2x2 - 1)
 = 4 x1.x2 - 2(x1 + x2) + 1
 = 4.(-) - 2() + 1
 = -2 - 3 + 1
 xA . xB = -4

Jadi persamaan kuadrat baru : x² - (xA + xB)x + xA . xB = 0
 x² - x - 4 = 0

4 0

3 years ago

Write the missing exponent of 100=10 =

Ganezh [65]

Maybe 5 is the answer

4 0

3 years ago

Read 2 more answers

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kolezko [41]

Answer:

1.65 im no sure