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meriva
3 years ago
12

May somebody help me please and thank you

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
4 0

Answer:

D

Step-by-step explanation:

15xy - 89y² has the least degree because while the others' greatest power is 3, this one's is 2. D is the only option that puts 15xy - 89y² as the smallest.

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What two numbers multiply to -15 and can also add up to -7
prohojiy [21]
Let the numbers be x and y
According to the data : xy=-15 and x+y=-7
xy=-15
x+y=-7

y=-7-x
x(-x-7)=-15

y=-7-x
-x^2-7x=-15

y=-7-x
x^2+7x-15=0

y=-7-x
x=(-7±sqrt(7*7+4*15))/2

y=-7-x
x=(-7±sqrt(109<span>))/2
</span>
Goes to two systems.
 1) 
y=-7-x
x=(-7+sqrt(109<span>))/2
</span>

y=-7+3.5-sqrt(109<span>))/2
</span>x=(-7+sqrt(109<span>))/2
</span>
y=-3.5-sqrt(109<span>))/2
</span>x=(-7+sqrt(109<span>))/2
</span>
2)
y=-7-x
x=(-7-sqrt(109<span>))/2
</span>
y=-7+3.5+sqrt(109))/2
x=(-7-sqrt(109))/2

y=-3.5+sqrt(109))/2
x=(-7-sqrt(109<span>))/2</span>
8 0
3 years ago
If a cube has a side length of 6.5 inches, which would be the cube's volume?
Lina20 [59]

Answer:

Step-by-step explanation:

19.5

4 0
3 years ago
kim needs to read 147-page book for class. she has one week to read it, and she plans to read an equal amount of pages each day.
kipiarov [429]
21 pages. you divide 147 by 7 and get 21 pages
7 0
3 years ago
7=14x-42y solve equation for y
dedylja [7]
7 = 14x - 42y
42y = 14x - 7
y = (14x - 7)/ 42

or we could write it as  y = (1/3)x - 1/6


3 0
3 years ago
Read 2 more answers
Q # 11 please help to resolve
Fofino [41]
It is the fourth choice - 1/4.

There are five odd number out of the ten number they are choosing from.
The probability that Jason will choose an odd number is  5/10 = 1/2
The probability that Kyle will choose an odd number is 5/10 = 1/2
Multiply the two probabilities to get the probability of them choosing odd numbers.
   1/2 * 1/2 = 1/4
3 0
3 years ago
Read 2 more answers
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