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poizon [28]
3 years ago
7

Solve 2x2 + 3x – 7 = x2 + 5x + 39 for x.

Mathematics
1 answer:
Brrunno [24]3 years ago
6 0
The answer to this question is:
x = 1 + or - the square root of 47
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For brainiest:):):):):):):)
GrogVix [38]
1) 1/6
2) 1/3
3) 1/2
4) 1/6
5)1/3
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If its wrong , sry..
7 0
3 years ago
The quadratic equation 2x^2 + bx + 18 = 0 has a double root. Find all possible values of b.
Doss [256]
When a quadratic equation ax^2+bx+c has a double root, the discriminant,
D=b^2-4ac=0
Here 
a=2,
b=b,
c=18
and 
D=b^2-4ac=b^2-4*2*18=0 
solve for b
b^2-144=0
=> b= ± sqrt(144)= ± 12

So in order that the given equation has double roots,  the possible values of b are ± 12.
4 0
3 years ago
If x = -6, which inequality is true?
Sveta_85 [38]

Answer:

A

Step-by-step explanation:

-5 - 3(-6) > 10

-5 - -18 > 10

-5 + 18 > 10

13 > 10

3 0
3 years ago
To rent a certain meeting room, a college charges a reservation fee of $36 and an additional fee of $8.80 per hour. The history
just olya [345]

Answer:

the maximum hours that they can rent it for is 8

Step-by-step explanation:

36 + 8.8t < 106.4

8.8t < 70.4

t < 8

3 0
3 years ago
I have 5 ? to ask there are here
Ivanshal [37]
To convert a percent into a decimal, you have to divide it by 100\%

1. 45\%\div100\%=0.45
2. 6.75\%\div 100\%=0.0675
3. 85\%\div100\%=0.85
4. 6.5\5\div100\%=0.065
5. 4\%\div100\%=0.04
4 0
3 years ago
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