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hjlf
2 years ago
7

A student has gotten the following grades on his tests. What is the minimum grade he must get on the last test in order to have

an average of 85?
77, 95, 89, 86
Mathematics
1 answer:
Schach [20]2 years ago
6 0
Where are the following grades ? how am i supposed to answer without all parts of the question .
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EASY 20 POINTS GUYS
Bumek [7]

note: 5≠20


also, if you multiply both sides of an inequality by a negative number, you flip te direction of the inequality sign

example: 3<5, multiply by -1, -3>-5


so given

-2<3

multiply both ides by -5 and fip sign

remember that (-)(-)=(-) and (+)(-)=(-)(+)=(-)

10>-15

4th option is answer

7 0
3 years ago
Read 2 more answers
7x - 2(3x - 5) = 26 ​
Reptile [31]

Answer:

x=16

Step-by-step explanation:

7x−2(3x−5)=26

Use the distributive property to multiply −2 by 3x−5.

7x−6x+10=26

Combine 7x and −6x to get x.

x+10=26

Subtract 10 from both sides.

x=26−10

Subtract 10 from 26 to get 16.

x=16

Graph if needed:

5 0
3 years ago
Read 2 more answers
The duration of routine operations at chicago general hospital has approximately a normal distribution with an average of 130 mi
vredina [299]

Answer:

79.77%

Step-by-step explanation:

P(X≥120) = normalcdf(120,1e99,130,12) = 0.7976716754 ≈ 0.7977 = 79.77%

Therefore, about 79.77% of operations last at least 120 minutes

5 0
2 years ago
Let p and q be different prime numbers. How many positive factors will (p^2 * q^4)^3 have?
Naily [24]

Answer:

  91

Step-by-step explanation:

p^6×q^12 will have (6+1)(12+1) = 7×13 = 91 positive integer divisors.

7 0
3 years ago
Read 2 more answers
does the pythagorean theorem hold for shapes other than squares constructed on the legs and hypotenuse of a right triagles
Fudgin [204]
It is 7 thousand and a bunch of random numbers

8 0
3 years ago
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