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Svetradugi [14.3K]
3 years ago
8

Solve by Completing the Square x^2 + 8x – 2 = 0

Mathematics
1 answer:
Bingel [31]3 years ago
3 0

x^2+8x  ____  = 2

x^2+8x+16=2

(x+4)^2 =2

Square root both sides

x+4=square root of (2)

subtract four form both sides

x= square root of (2) - 4

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What is the answer for 1/4 ( 12x + 24 ) -9x
Gekata [30.6K]

The final expression is -6x+6

Step-by-step explanation:

The expression that we have is

\frac{1}{4}(12x+24)-9x

In order to solve the expression, we start by applying the  distributive property to the bracket. We get:

\frac{1}{4}\cdot 12x + \frac{1}{4}24 -9x

Simplifying,

3x+6-9x

Now we add the two terms in x, and we find:

(3x-9x)+6=\\-6x+6

Which is the final expression.

Learn more about expressions:

brainly.com/question/11207748

#LearnwithBrainly

3 0
3 years ago
A rectangle has vertices (−5, 6), (−1, 6), (−1, 3), and (−5, 3). It is first dilated by the rule (x, y)→(7x, 7y) and then transl
zhenek [66]
I think the answer is c
4 0
3 years ago
C.126<br> D.115<br> Geometry math question no Guessing and Please show work
-BARSIC- [3]

The triangles are said to be similar, so the measures of sides in the larger triangle are proportional to the measures of sides in the smaller triangle. The measures of the two long sides have the ratio 182:65, so we expect the ratio of the shortest sides to be the same:

... ? : 45 = 182 : 65 . . . or . . . ?/45 = 182/65

Multiplying the equation by 45 gives us

... ? = 45·(182/65) = 126

The appropriate choice is ...

... C. 126


5 0
3 years ago
Choose the opposite integer for: 100 feet below the surface
Simora [160]

Answer:I think it’s 100

Step-by-step explanation:

It says that it’s 10p feet below the surface so that’s -100. It asks for the opposite of that so it’s 100

6 0
3 years ago
Read 2 more answers
If log10 y = 2. what does y equal?
lys-0071 [83]

Answer:

log_{10}  (100) = 2

Step-by-step explanation:

Here, the given expression is:

log_{10}  (y) = 2

Now, by logarithm rules, we know

if  log_{b}(x) = z

, then x =b^{z}

Comparing here, b = 10  and  z = 2

⇒ y  =   10^{2}  = 100

or, log_{10}  (100) = 2

6 0
3 years ago
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