Answer:
- (-11.70, -2.05), (4.70, 5.10)
Step-by-step explanation:
<u>Given equations</u>
<u>Solving the first equation for x:</u>
- (x+5)(x+2)=65
- x^2 + 7x + 10 = 65
- x^2 + 7x - 55 = 0
- x = (-7 ± √(49+4*55))/2
- x = -11.70, x = 4.70
<u>Then solving for y:</u>
- y= 24/(-11.7) = -2.05
- y = 24/4.7 = 5.10
<u>Solution set: </u>
- (-11.70, -2.05), (4.70, 5.10)
Answer:
-27/35, and the decimal answer -0.77142857142
Step-by-step explanation:
multiply the fractions- 3 x 9 equals 27, 7 x 5 equals 35. The answer is negative.
Answer:
The book has 20 pages.
Step-by-step explanation:
100%-70%= 30%
6 pages = 30%
30%=6
:30 :30
1%=0,2
⋅100 ⋅100
100%=20
The numbers 28 and 32 fulfill the composite proposition.
<h3>What number does fulfil a proposition?</h3>
In logics, propositions are structures that contains itself a true value, it may be but not exclusively equations and sentences. Composite propositions are the result of combining at least two propostions with operators. In this case, we have the following propostion: <em>A number is greater than 25 </em><u><em>and</em></u><em> less than 35</em>.
This kind of proposition is true if and only if each simple proposition is true. Therefore, the numbers 28 and 32 fulfill the composite proposition.
To learn more on propositions: brainly.com/question/14789062
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Answer:
side_1 = 10
side_2 = 3.16
side_3 = 9.49
Step-by-step explanation:
pitagora's theorem
