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8_murik_8 [283]
2 years ago
10

If -nx2 + tx + c = 0, what is x equal to?

Mathematics
1 answer:
Helen [10]2 years ago
5 0
f(x)=-nx^2+tx+c=0\\\\
\Delta=t^2-4\cdot(-n)\cdot c=t^2+4cn\\\\
1.\\
 \Delta0\\
\sqrt{\Delta}=\sqrt{t^2+4cn}\\
x_1=\frac{-t-\sqrt{t^2+4cn}}{2\cdot(-n)}=\frac{t+\sqrt{t^2+4cn}}{2n}\\
x_2=\frac{-t+\sqrt{t^2+4cn}}{2\cdot(-n)}=\frac{t-\sqrt{t^2+4cn}}{2n}\\
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1/2 (x + 4) = 1/2x + 1
Mekhanik [1.2K]

Simplifying the expression gives 0 = 6

<h3>What are algebraic expressions?</h3>

An algebraic expression is defined as an expression made up of variables and constants, with algebraic operations like addition, subtraction, and division.

Given the expression;

1/2 (x + 4) = 1/2x + 1

\frac{1}{2(x + 4)} = \frac{1}{2(x+ 1)}

cross multiply

2(x + 1) = 2(x+ 4)

Expand the bracket

2x + 2= 2x + 8

collect like terms

2x - 2x = 8 - 2

0 = 6

Thus, simplifying the expression gives 0 = 6

Learn more about algebraic expressions here:

brainly.com/question/4344214

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4 0
1 year ago
50% of a number is x. What is 100% of the number? Assume x &gt; 0.
raketka [301]

Answer:

2x > 0

Step-by-step explanation:

\frac{50}{100} :\frac{x}{y}

50 × y = x × 100

50y = 100x

50y ÷ 50 = 100x ÷ 50

y = 2x

7 0
3 years ago
This morning Greg’s car had 25.25 of fuel now 1.4 gallons are left how much fuel did Greg use
tensa zangetsu [6.8K]

Answer:23.85

Step-by-step explanation:

8 0
3 years ago
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Oksana_A [137]

Answer:

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Step-by-step explanation:

6 0
2 years ago
Write the first 4 terms of the arithmetic sequence With first term 37 and common difference 9
alexandr402 [8]

Answers:

first term = 37

second term = 46

third term = 55

fourth term = 64

==========================================

Explanation:

Start at 37. Add 9 to this term to get the second term. Add 9 to that result to get the next term, and so on.

first term = 37

second term = 37+9 = 46

third term = 46+9 = 55

fourth term = 55+9 = 64

-----------

The nth term formula is

a(n) = 9n+28

It can be found by plugging a = 37 and d = 9 into the general form

a(n) = a + d*(n-1)

4 0
2 years ago
Read 2 more answers
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