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mylen [45]
3 years ago
5

Isabels car gets 33.5 miles per gallon. her gas tank holds 15.1 gallons of gas.

Mathematics
2 answers:
777dan777 [17]3 years ago
6 0

Answer: 505.85 is how many miles she can drive

Hitman42 [59]3 years ago
3 0

Answer:

Whats the question?

Step-by-step explanation:

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8.Find the value of c that makes the expression be a perfect square trinomial p^2-30p+c
Darina [25.2K]
Hope this is the right one.

Problem 8
p^2 - 30p + c
<em>Step One</em>
Take 1/2 of - 30
1/2 * -30 = - 15

<em>Step 2
</em>Square -15
(-15)^2 = 225
c = 225

Problem Nine
\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a} &#10;
a = 1
b = 4
c = -15
\text{x = }\dfrac{ -4 \pm \sqrt{4^{2} - 4*1*(-15) } }{2*1}
\text{x = }\dfrac{ -4 \pm \sqrt{\text{16} + \text{60} } }{2}

x = [-4 +/- sqrt(76)] / 2
x = [-4 +/- 2*sqrt19]/2
x = [-4/2 +/- 2/2 sqrt[19]
x = - 2 +/- sqrt(19) 

x1 = - 2 + sqrt(19)
x2 = -2 - sqrt(19)

These two can be broken down more by finding the square root. I will leave them the way they are.  It's just a calculator question if you want it to go into decimal form.

Problem Ten

a = 1
b = 4
c = -32

The discriminate is sqrt(b^2 - 4ac)
D = sqrt(b^2 - 4ac)
D = sqrt(4^2 - 4(1)(-32)
D = sqrt(16 - - 128)
D = sqrt(16 + 128)
D = sqrt(144)
D = +/- 12

Since D can equal + or minus 12 there must be 2 possible (and different) roots. As a matter of fact, this quadratic can be factored.
(x + 8)(x - 4) = y 
But that' s not what you were asked for.
The discriminate is >  0 so the roots are going to be real.
<em>Answer; The discriminate is > 0 so there will be 2 real different roots.</em>

4 0
2 years ago
In recent year a letter to Europe from the United States cost $0.94 to mail. A letter mailed within United States cost $0.44. Na
Bogdan [553]
3 letters to US = 3*0.94 = 2.82
2 local letters = 2*0.44 =  0.88 
checking: 2.82+0.88 = 3.70

to get rid out of 0.04 cents you have to multiply it by 5. so total number of letters would be 5.
5 0
3 years ago
A fruit bowl contains 3 apples, 4 pears, and 4 oranges. Kayla selects 2 fruits at random without replacement. What is the probab
love history [14]
Pick 1: 3 apples out of 11 pieces of fruit → 3/11
Pick 2: 4 oranges out of 10 pieces of fruit → 4/10 = 2/5

Pick 1 AND Pick 2
  3/11    x      2/5      =  6/55
3 0
3 years ago
Help please thanks!!!!!!!!!!
sergeinik [125]
The answer is b please be thankful
6 0
3 years ago
Is is true that the coefficient of the expression 18z-7(-3+2z) of z is 13
Sever21 [200]
<span>18z-7(-3+2z) 
= 18z + 21 - 14z
= 4z + 21

answer is False
</span><span>coefficient of z is 4, not 13</span>
3 0
3 years ago
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