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Oxana [17]
3 years ago
15

Suppose that a is a nonzero constant for which the equation ax^2+20x+7=0 has only one solution. find this solution.

Mathematics
1 answer:
Talja [164]3 years ago
4 0
\Delta=0\\\\
\Delta=20^2-4\cdot a\cdot7=400-28a\\
400-28a=0\\
28a=400\\
a=\dfrac{400}{28}=\dfrac{100}{7}


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12 more than 8,2 times a number n
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6 0
3 years ago
15 points to whoever answers correct
Pepsi [2]

<u>Answer</u>

C. 4 + 6

D. 3.15151515.. + 4.6

E. √64 × √25

<u>Explanation</u>

A rational number is a number that can be expressed as a quotient or a fraction. That is it can be written as a/b.


π×6 = 6π   ⇒ can not be written as a rational number.

√3 + √5 ⇒ the sum of two irrational numbers can not be rational.

4 + 6 = 10. Ten is a rational number. it can be written as 10/1

3.15151515.. + 4.6 = 104/33 + 23/5

                             = 1279/165                      

√64 × √25 = 8×5=40            This can be written as 40/1


5 0
3 years ago
Hey I need these by 8am or I'm screwed,
tiny-mole [99]
34.4 / 4 = 8.6 

The value 214.01 is greater.

2.5 x 10^3 = 2,500

1 M = 100 CM
2 M = 200 CM
3 M = 300 CM
4 M = 400 CM
5 M = 500 CM
6 M = 600 CM
7 M = 700 CM

If you want detailed explanations after you get done with your classes ill be glad to explain. Happy studying!

5 0
3 years ago
Consider the equation 3x² - 13x - 30 = 0<br><br> (a) Write the factored form of the trinomial
Katarina [22]

Answer:

Step-by-step explanation:

3 0
2 years ago
A data value that is much higher or much lower then the other values on the data set?
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