<img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7B%205x%20%2B%202y%20%3D%201%7D%20%5Catop%20%7B4x-%20y%20%3D%20-7%7D%7D

3 years ago

%20%5Cright." id="TexFormula1" title="\left \{ {{ 5x + 2y = 1} \atop {4x- y = -7}} \right." alt="\left \{ {{ 5x + 2y = 1} \atop {4x- y = -7}} \right." align="absmiddle" class="latex-formula">

Mathematics

1 answer:

yuradex [85]3 years ago

4 0

Answer: x = -1, y = -11

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If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 1 on the white die? A 1 on the wh

Allisa [31]

Answer:

Step-by-step explanation:

Sample space of the experiment

first number in the bracket is white die and second number in the bracket is black

(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)

(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)

(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)

(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)

(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)

As it can be seen that the first numbers in the bracket are (1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

∴1 on the white die can be obtained in 6 ways

7 0

3 years ago

If f(2) =20 and f(3) =10<br>F(4) = ,f(5)=

Arada [10]

F(4)=0 and F(5)= -10

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3 years ago

abby and her 7 friends had lunch at the neighborhood burger barn.the bill was $47.60. if they shared the cost of the lunch equal

meriva

Answer:

$6.80

Step-by-step explanation:

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3 years ago

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D^2 - 4d = 3d Solve each equation. Factor and use the zero product property to solve. Show all work algebraically.

AveGali [126]

D^2 - 4d = 3d

d^2 - 7d = 0

d(d - 7) = 0

d = 0 or d - 7 = 0

d = 0 or d = 7

8 0

3 years ago

A model rocket is launched with an initial velocity of 250 ft per second. The height h, in feet, of the rocket t seconds after t

diamong [38]

9514 1404 393

Answer:

{2.96, 12.66}

Step-by-step explanation:

A graph shows the rocket will be 600 feet up after 2.96 seconds, and again at 12.66 seconds.

You can solve the equation h = 600 to find the times.

-16t^2 +250t = 600

-16(t^2 -15.625t) = 600

-16(t^2 -15.625t +7.8125²) = 600 -16(7.8125²)

-16(t -7.8125)² = -376.5625

t -7.8125 = √(376.5625/16) ≈ ±4.8513

t = 7.8125 ± 4.8513 ≈ {2.9612, 12.6638}

The rocket will be 600 ft above the ground 2.96 and 12.66 seconds after launch.

4 0

3 years ago