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daser333 [38]
3 years ago
15

5x2 – 2x + 5 = 0 Solve

Mathematics
1 answer:
Tems11 [23]3 years ago
5 0

Answer:

x =  \frac{15}{2}  = 7 \frac{1}{2}

Step-by-step explanation:

5 \times 2 - 2x + 5  = 0\\ 10 - 2x + 5 = 0 \\ 15 - 2x = 0 \\ 15 - 2x  - 15 = 0 - 15 \\  - 2x = 0 - 15 \\  - 2x =  - 15 \\ x = 15 \div 2 \\

\boxed{\green{\boxed{\bold{x =  \frac{15}{2}  = 7 \frac{1}{2} }}}}

┈➤ . . ⇢ ˗ˏˋ⌦ ..♡ˎˊ˗ ꒰✈꒱   

╭─────────

┊╭─────────

┊✿꒷꒦ Thankyou

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★ . ꜝꜞ ᳝ ࣪ hope that helped!  ʬʬ

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Jerry thinks that x < 4 is a solution to the following inequality: 2x + 10 < 4x - 20
I am Lyosha [343]

Answer:

x>15

Step-by-step explanation:

Given the inequality: 2x + 10 < 4x - 20

Collect like terms

2x-4x<-20-10

-2x<-30

x > -30/-2

x>15

Hence the solution is x>15

7 0
3 years ago
4. (a)(i)Show that log4x=2log16x. (ii)Show that log x=3logb³ x. (iii) Show that log₂x=(1+log₂3)logix.​
alexdok [17]

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3 0
2 years ago
If the third term of an A.p. is 5 and the seventh term is 9 find the 17th number​
Schach [20]

Here,

Third term (a) = 5

Seventh term (b) = 9

17th number = ?

Now,

T3 = a + 2d

5 = a + 2d

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T7 = a + 6d

9 = a + 6d

d = (9 - a)/6 ------- 2.

Combining eq (1) and (2)

or, (5 - a)/2 = (9 - a)/6

or, 6 (5 - a) = 2 (9 -a)

or, 30 - 6a = 18 - 2a

or, 12 = 4a

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putting the value of a in eq (1)

or, d = (5 - 3)/2

or, d = 2/2

◆ d = 1

Then,

T17 = a + 16d

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I hope you understand...

This is Right answer...

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7 0
3 years ago
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just olya [345]

Answer:

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The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180

x + 50 + 5x - 40 + 110 - 2x = 180, that is

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4x = 60 ( divide both sides by 4 )

x = 15

Thus

x + 50 = 15 + 50 = 65°

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The largest angle is (110 - 2x)° = 80°

7 0
3 years ago
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weqwewe [10]

Answer:

DE=16

Step-by-step explanation:

I took the test and it's right!

6 0
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