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yKpoI14uk [10]
3 years ago
12

5 and a half minus 7 equals

Mathematics
1 answer:
gogolik [260]3 years ago
5 0

Answer:

-9/5; -1 4/5; -1.8

Step-by-step explanation:

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9(a+2)=9 <br> con comprobación plisss!!
icang [17]

Answer:

9a+18=9

9a=-9

a=-1

Step-by-step explanation:

6 0
3 years ago
Solve 3x^2 + 6x+15=0
Elden [556K]

Answer:

The solution of given equation is ( - 1 + 2 i ) , ( - 1 - 2 i )

Step-by-step explanation:

Given equation as :

3 x² + 6 x +15 = 0

The value of x fro the quadratic equation a x² + b x + c = 0 is obtained as

x = \frac{-b\pm \sqrt{b^{2}-4ac}}{2a}

So , from given eq , the value of x is now obtain as

x = \frac{-b\pm \sqrt{b^{2}-4\times a\times c}}{2\times a}

Or, x =  \frac{-6\pm \sqrt{6^{2}-4\times 3\times 15}}{2\times 3}

Or, x = \frac{\sqrt{-144} }{6}

∴   x = ( - 1 + 2 i ) , ( - 1 - 2 i )

Hence The solution of given equation is ( - 1 + 2 i ) , ( - 1 - 2 i )  Answer

6 0
3 years ago
Independence and Exclusiveness are two topics which are important to probability and often confused. Discuss the difference betw
Pavlova-9 [17]

Answer:

Independent means that one has no effect on the other. Exclusive means one cannot happen alongside the other. In simpler terms, independent events can be thought of as the chance it'll rain and how many people are flossing their teeth in the morning. Both happen, but neither one impacts the other.

Exclusive, on the other hand, means only one can happen. Lets say at nine in the evening your favorite show is on. However, you have an early morning and should be asleep by nine. You cannot both be asleep and watching your favorite show, and so these events are exclusive.

7 0
3 years ago
Solve <br> 5x+y=-17 8x-3y=-18
Olenka [21]

Answer:

x = -3

y = -2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Plz help!! Given: DE is a midsegment of ABC. Show all work.
topjm [15]

Answer:

AC=14

X=10

Y=1

Hoped this helped!

Step-by-step explanation:

DE is half of BC, therefore x=10. AE and EC have to be the same length, which is 7. SO, y=1 and x is 10.

5 0
2 years ago
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