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ioda
2 years ago
15

I really need help with these 4 questions, whoever answers CORRECTLY gets brainliest.

Mathematics
2 answers:
Citrus2011 [14]2 years ago
7 0

B
B
D
A
Explanation, I have a 128% in math rn…
Ann [662]2 years ago
7 0
<h3>1. Which ordered pair is a solution of the equation y = x - 4?</h3>

[ Option A ]

(2,6)

y = x - 4

6 = 2 - 4

6 = -2 ❎

[ Option B]

(6,2)

y = x - 4

2 = 6 - 4

2 = 2 ✔️

[Option C ]

(-2,6)

y = x - 4

6 = -2 - 4

6 = -6 ❎

[ Option D ]

(-6,2)

y = x - 4

2 = -6 - 4

3 = -10 ❎

<h3>2. Which value is a solution of the equation 3 - 2x = -5?</h3>

A. 2

B. 4✔️

C. -2

D. 1/5

<u>Step by step explanation :</u>

3 - 2x = -5

3 + 5 = 2x

8 = 2x

8/2 = x

<u>4 = </u><u>x</u>

<h3>3. Which ordered pair is a solution of the equation y = 5x?</h3>

A. (-2,10)

B. (-5,25)

C. (-3,15)

D. (-2,-10)✔️

<u>Step by step explanation :</u>

y = 5x

y/x = 5

(-10)/(-2) = 5

<h3>4. Which ordered pair is a solution of the equation y = -9x + 4?</h3>

A. (10,-86)

y = -9x + 4

-86 = -9(10) + 4

-86 = -90 + 4

-86 = -86 ✔️

B. (-4,-58)

y = -9x + 4

-58 = -9(-4) + 4

-58 = 36 + 4

-58 = 40 ❎

C. (6,-41)

y = -9x + 4

-41 = -9(6) + 4

-41 = -54 + 4

-41 = -50 ❎

D. (-6,57)

y = -9x + 4

-57 = -9(-6) + 4

-57 = 54 + 4

-57 = 58❎

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A football coach is trying to decide: When a team is ahead late in the game, which strategy is better?
PSYCHO15rus [73]

Answer:

You are more likely to win by playing regular defense.

Step-by-step explanation:

Assume out of 100 reviewed games, there were 50 regular defense games and 50 prevent defense games. And out of 50 regular defense games, 38 were win, 12 were lose. And out of 50 prevent defense game, 29 were win, 21 were lose.

Probability to win the game by playing regular defense is:

P(win | regular) = 38/50 = 0.76

Probability to win the game by playing prevent defense is:

P(win | prevent) = 29/50 = 0.58

Since the probability of winning by regular defense game is more than prevent defense game (0.76 > 0.58), you are more likely to win by playing regular defense.

5 0
2 years ago
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Answer:

25

Step-by-step explanation:

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Cheryl wants to have $2300 in spending money to take on a trip to Disney World in three years. How much must she deposit now in
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Use the compound amount formula:

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3 years ago
The Hiking Club is on a trip to hike up a mountain. The members increased their elevation 290 feet during their hike
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Answer:

Step-by-step explanation:

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We need to optimize f(x, y, z) = x + 2y subject to the constraints g(x, y, z) = x + y + z = 8 and h(x, y, z) = y2 + z2 = 4. To f
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The Lagrangian is

L(x,y,z,\lambda,\mu)=x+2y+\lambda(x+y+z-8)+\mu(y^2+z^2-4)

with critical points where the partial derivatives vanish:

L_x=1+\lambda=0\implies\lambda=-1

L_y=2+\lambda+2\mu y=0\implies\mu=-\dfrac1{2y}

L_z=\lambda+2\mu z=0\implies\mu=\dfrac1{2z}

L_\lambda=x+y+z-8=0

L_\mu=y^2+z^2-4=0

The second and third equations tell us z=-y, so that in the last equation we find

y^2+(-y)^2=2y^2=4\implies y=\pm\sqrt2\implies z=\mp\sqrt2

and from the fourth equation we get

x+y+z=x=8

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