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Ganezh [65]
3 years ago
10

4x to the 2nd power minus 12

Mathematics
1 answer:
amid [387]3 years ago
6 0
Answer: -12



explanation:

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Degger [83]
DC is 14 units and DE can be found by counting. sorry if i’m too late
8 0
2 years ago
Find the missing side length in the image attached.
BARSIC [14]

Answer:  15

<u>Step-by-step explanation:</u>

Set up the proportion as follows:

\dfrac{18}{10}=\dfrac{12+x}{x}\\\\\\18x=10(12+x)\\\\\\18x=120+10x\\\\\\8x=120\\\\\\x=\dfrac{120}{8}\\\\\\x=\large\boxed{15}

3 0
3 years ago
Read 2 more answers
Help please, I attached the question. Is it a!? <br> 
AVprozaik [17]

Answer:

A

Step-by-step explanation:

Recall that for a quadratic equation of the form:

0=ax^2+bx+c

The number of solutions it has can be determined using its discriminant:  

\Delta = b^2-4ac

Where:

  • If the discriminant is positive, we have two real solutions.
  • If the discriminant is negative, we have no real solutions.
  • And if the discriminant is zero, we have exactly one solution.

We have the equation:

2x^2+5x-k=0

Thus, <em>a</em> = 2, <em>b</em> = 5, and <em>c</em> = -<em>k</em>.

In order for the equation to have exactly one distinct solution, the discriminant must equal zero. Hence:

b^2-4ac=0

Substitute:

(5)^2-4(2)(-k)=0

Solve for <em>k</em>. Simplify:

25+8k=0

Solve:

\displaystyle k = -\frac{25}{8}

Thus, our answer is indeed A.

3 0
2 years ago
Read 2 more answers
A . 5 - 4/8<br> B. -1/8 - 1/4<br> C. -1/4 - (-1/8)<br> or D. -1/6 + (-5/24)
xenn [34]

Answer:

letter ( D ).

1/6 + ( - 5 / 2 4 )

7 0
2 years ago
2
yawa3891 [41]

Answer:

a

Step-by-step explanation:

5 0
2 years ago
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