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nikdorinn [45]
3 years ago
7

Determine two numbers whose sum is 9 and whose product is 20, by solving a quadratic equation.

Mathematics
2 answers:
Tomtit [17]3 years ago
6 0

Answer:

4 and 5

Step-by-step explanation:

lorasvet [3.4K]3 years ago
5 0
Ex: x^2-9x+20
(x-4)(x-5)=0
x=4 x=5
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Solve for x<br> 30x=(60)(ЧО)
Tju [1.3M]

Answer:

x = 8

Step-by-step explanation:

30x = (60)(40)

30x = 240                 Multiply 60 and 40

x = 8                          Divide 30 from both sides

4 0
3 years ago
During the first 3 days of the week, Mike read an average of 28 pages per day. During the next 4 days, Mike averaged 42 pages pe
Anestetic [448]

Answer:

36 pages per day on average

Step-by-step explanation:

Calculate the average.

3 * 28 (The first 3 days of the week where Mike reads 28 pages per day) = 84

4 * 42 (The next 4 days where Mike reads 42 pages per day ) = 168

168 + 84 = 252



To find the average using this total, divide it by the total amount of days of reading (seven days in this problem).

252 / 7 = 36

6 0
2 years ago
If you have a lot of money, you don’t need insurance. true or fasle
tekilochka [14]

Answer:

it would be false

Step-by-step explanation:

the reason it is false is even though you have lots of money you still arent safe just by having money you need to be protected both on car and your self and other things

6 0
3 years ago
Mario’s company makes unusually shaped imitation gemstones. One gemstone has 14 faces and 10 vertices. How many edges does the g
Ivan
The gemstone has 22 edges.

We use Euler's formula on this:

F + V - E = 2

Substituting our information, we have:

14 + 10 - E = 2

Combining like terms, 
24 - E = 2

Subtract 24 from both sides:
24 - E - 24 = 2 - 24
-E = -22

Divide both sides by -1:
-E/-1 = -22/-1
E = 22
3 0
3 years ago
What is the last thing you do as a check inside the car?
Vitek1552 [10]
I always make sure my hand brake is on
7 0
4 years ago
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