If 5 a = 45, ba= 1, then b=
Answers
Answer:
1/9
Step-by-step explanation:
5a=45
divide it by 5 and a will =9
9b=1
divide 1 by 9
you get 1/9=b
therefore 9x1/9=1
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Answers
= 72 + 20 = 92
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Answer:
Jesus loves you
Answers
Multiply through by 2 to get:
x^2 - 2x + 10 = 0
Therefore, x = 1 + 3i or x = 1 - 3i
B. 2 hours
C. 3/4 hour
D. 1 1/4 hours
Answers
= 13/4 hours
Time taken by the express bus to make the same trip = 2 1/2 hours
= 5/2 hours
Time that can be saved by taking the express bus = (13/4) - (5/2) hours
= (13 - 10)/4 hours
= 3/4 hours
So 3/4 hours can be saved by taking the express bus rather than the regular bus. The correct option among all the options given in the question is option "C". I hope the procedure is simple enough for you to understand.
Taking the express bus saves 3/4 hour of travel time compared to the regular bus.
To find the travel time saved by taking the express bus, we need to subtract the travel time of the express bus from the travel time of the regular bus.
Regular bus travel time: 3 1/4 hours
Express bus travel time: 2 1/2 hours
To perform the subtraction, we need to convert both times to the same denominator:
3 1/4 = 13/4 hours
2 1/2 = 5/2 hours
Now, subtract the two times:
13/4 - 5/2 = 13/4 - 10/4 = 3/4
Therefore, taking the express bus saves 3/4 hour of travel time.
The answer is C. 3/4 hour.
To know more about travel, refer here:
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Answers
r=rat
P=present amount
I=interst
t=time in yeare
2 years
16%
3000
I=2*3000*0.16
I=$960
16% of $1000 is $160
16% of $3000 is $480
2 years of simple interest 16% on $3000
= $3000 + $480 + $480
= $3960
One solution?
two solutions?
no real solution?
cannot be determined
Answers
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Explanation:
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Given: -7x² − 11x − 2 = 0 ;
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We see that it is in "quadratic format" ; that is:
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" ax² + bx + c = 0 ; a ≠ 0 ; "
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Multiply the entire equation by "-1" ; to get rid of the "negative number" :
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→ -1 * {-7x² − 11x − 2 = 0} ;
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to get: → 7x² + 11x + 2 = 0 ;
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This expression is written in the "quadratic format";
ax² + bx + c = 0 ; in which: a = 7 ; b = 11; c = 2 ;
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The expression cannot be "factored"; so, we can solve for "x" ; by using the "quadratic equation formula" ;
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x = {-b ± √(b² − 4ac)} / {2a} ;
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Let us solve for: "(2a)" : 2a = 2 * a = 2 * 7 = 14 ;
Let us solve for: "(b² − 4ac)": 11² − 4*7*2 = 121 − 56 = 65;
→ √(b² − 4ac) = √65
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→ " -b" = -11 ;
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So, x = (-11 ± √65) / 14 ;
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There are TWO (2) solutions:
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Solution 1) x = (-11 + √65) / 14 = - 0.2098387322643893071; AND:
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Solution 2) x = (-11 − √65) / 14 = -1.3615898391641821214 ;
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So, there are TWO (2) real solutions.
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