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den301095 [7]
3 years ago
7

Question 16 (1 point) Solve the inequality −3(r−5)+7≥28. Question 16 options: r≤−2 r≥−2 r≤−283 r≤−12

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
8 0

Answer:

Step-by-step explanation:

-39r-5=>

Anuta_ua [19.1K]3 years ago
5 0

Answer:

Step-by-step explanation:

-3(r - 5) + 7 > = 28

-3r + 15 + 7 > = 28

-3r + 22 > = 28

-3r > = 28 - 22

-3r > = 6

r < = -6/3

r < = -2 (thats less then or equal)....I had to switch the sign because I divided by a negative

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Alex17521 [72]

Answer:

x² can be written as (3.8 * 10⁵)² = 3.8² * 10⁵ * ² = 14.44 * 10¹⁰.

x² / y = 14.44 * 10¹⁰ / 5.9 * 10⁴ ≈ 2.45 * 10⁶

5 0
3 years ago
In a lottery game a player wins $1,000,000 with probability 0.0000005, wins $200,000 with probability0.000002, and wins $30,000
MariettaO [177]

Answer:

X_1 = 1000000 , P(X_1)= 0.0000005

X_2 = 200000 , P(X_2)= 0.000002

X_3 = 30000 , P(X_3)= 0.00001

X_4 = -2, P(X_4) = 1-0.0000005-0.000002-0.00001= 0.9999875

And then replacing we have this for the expected value:

E(X) = 1000000*0.0000005 +200000*0.000002+30000*0.00001 2*0.9999875

And after do the math we got:

E(X) = -0.79998

And then the expected value for this game is -0.79998 a negative result means NOT a win.

Step-by-step explanation:

For this case we can define the random variable X as the amount that we can win. We can find the expected value with the following formula:

E(X) = \sum_{i=1}^n X_i P(X_i)

And we have the following probabilities and possible values given:

X_1 = 1000000 , P(X_1)= 0.0000005

X_2 = 200000 , P(X_2)= 0.000002

X_3 = 30000 , P(X_3)= 0.00001

X_4 = -2, P(X_4) = 1-0.0000005-0.000002-0.00001= 0.9999875

And then replacing we have this for the expected value:

E(X) = 1000000*0.0000005 +200000*0.000002+30000*0.00001 2*0.9999875

And after do the math we got:

E(X) = -0.79998

And then the expected value for this game is -0.79998 a negative result means NOT a win.

7 0
3 years ago
Can someone help me with this please
Allushta [10]
2x+8y=9
4x+16y=18
this is because the second equation is the first equation, but multiplied by 2. if one side is multiplied by 2, so is the other
the answer is 18
7 0
3 years ago
Tim is remodeling his square kitchen but has forgotten the dimensions. He knows he had bought 81 square feet of tiles earlier, a
sammy [17]

Answer:

C) 36 feet

Explanation:

P(square)= 4s

s= square root of the area

4 \times  \sqrt{a}  \\ a = 81 \\ 4 \times  \sqrt{81}  \\ 4 \times 9 \\  = 36

4 0
3 years ago
Which product is negative?
kolezko [41]

Answer:

(-3/8) (-5/7) (-1/4)

3 0
4 years ago
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