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Vilka [71]
3 years ago
14

Help! What is the answer to: 4x^2 + 9x - 1 = 0

Mathematics
2 answers:
nataly862011 [7]3 years ago
6 0
I hope this helps you




a=4


b=9


c= -1



disctirminant =b^2-4ac


disctirminant =9^2-4.4. (-1)


disctirminant =97


x1=-9+square root of 97/2.4= -9+square root of 97/8


x2= -9-square root of 97/2.4= -9-square root of 97/8
ira [324]3 years ago
4 0
Quadratic formula. The number before x^2 needs to be a 1 first . Get that number to a 1 and then use the formula. You should be able to find the quadratic formula on google.
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Find the sum of each group of numbers. You may add the numbers in any order. Then, check your work by adding the numbers again i
Len [333]
The sum of each group of numbers are as follows:
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6 0
3 years ago
Read 2 more answers
Thomas arrived at the library at 11:45 AMHe left 1 hour 40 minutes laterAt what time did Thomas leave the library?
andre [41]

Answer:

At 1:25 P.M.

Step-by-step explanation:

Thomas arrived at the library at 11:45 AM and he left 1 hour 40 minutes later.

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Now, after 15 minutes, the time will be 12 P.M.

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6 0
3 years ago
Can someone show me how to solve this
NISA [10]

Answer:

f(1)=13

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The above mentioned are false statements

Step-by-step explanation:

f(1)=13 : false because "13" is out of range -40≤f(x)≤-10

f(-9)=88 : false because "88" is out of range -40≤f(x)≤-10

f(0)=0 : false because "0" is out of range -40≤f(x)≤-10

f(-15)=-20 : false because "-15" is out of domain -10≤x≤20

7 0
3 years ago
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