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3 years ago

0.3x = 39 what is the value of x? (Use only the digits 0 - 9 and the decimal point, if needed, to write the number)

Mathematics

1 answer:

telo118 [61]3 years ago

5 0

Answer:

130

Step-by-step explanation:

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X^2-3=5x simplify this

Alex Ar [27]

To simplify x^2-3 =5x

You would first subtract 5x from both sides

X^3-5x-3

Next you would plug this into the quadratic equation:

X=5+/- the square root of: -5^2 -4(1)(-3)/2(1)

Then simplify,
5+/- the squareroot of 24 + 12 / 2

5+/- The squareroot of 36 /2

5+/- 6 / 2

Then solve if it’s an addition or subtract

5+6/2

X=11/2 or 5 1/2

5-6/2

X= -1/2

The answer is x=-1/2 or x=11/2

Hope this helps

7 0

2 years ago

Using the given points, determine the slope. <br><br> (0, 32) and (100, 212)

Allushta [10]

Hi!

To find the slope of two given points, subtract the y values, and subtract the x values, or..

$\frac{(y2 - y1)}{(x2 - x1)}$

$\frac{(212 - 32)}{(100 - 0)}$

$\frac{180}{100}$

The answer is 9/5 or 1.8.

Hope this helps! :)

8 0

2 years ago

Read 2 more answers

Hey Mahfia, please help! Find an equation in standard form for the hyperbola with vertices at (0, ±10) and asymptotes at

Dafna1 [17]

Answer:

$\huge\boxed{ \red{ \boxed{ \tt{ \frac{ {y}^{2} }{ {10}^{2} } - \frac{ {x}^{2} }{ {12}^{2} } = 1}}}}$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

conic sections
PEMDAS

<h3>tips and formulas:</h3>

$\sf hyperbola \:equation : \\ \sf \frac{ {x}^{2} }{ {a}^{2} } - \frac{ {y}^{2} }{ {b}^{2} } = 1$
vertices of hyperbola:(±a,0) and (0,±b) if reversed
$\sf \: asymptotes : \\ y = \pm\frac{b}{a} x$

<h3>given:</h3>

vertices: (0,±10)
the hyperbola equation is inversed since the vertices is (0,±10)
asymptotes: $\pm \frac{5}{6}x$

<h3>let's solve:</h3>

the asymptotes are in simplest and we know b is ±10

according to the question

$y = \sf \frac{5 \times 2}{6 \times 2} x \\ y = \frac{10}{12} x$

therefore we got

a=12
b=10

note: the equation will be inversed

let's create the equation:

$\sf substitute \: the \: value \: of \: a \: and \: b : \\ \sf \frac{ {y}^{2} }{ {10}^{2} } - \frac{ {x}^{2} }{ {12}^{2} } = 1$

3 0

3 years ago

The G.CD of the number is 17 and the L.C.M is 140,If one of the number is 20, Find the other number

Alik [6]

Answer:

HCF Of two nos. is 17

Let another no. be x

we know that HCF ×LCM = Product of two numbers

17×140=20×(x)

20x=2380

x =2380/20

x=119

The other no. is 119

6 0

2 years ago

What is the 4th term of the sequence? <br> a1 = 8 and an = 6 + an – 1 <br> a4 =

Lady_Fox [76]

$\bf \begin{array}{ll}
term&value\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
a_1&8\\\\
a_2&6+a_{n-1}\\
&6+a_{2-1}\\
&6+a_1\\
&6+8\\
&14\\\\
a_3&6+a_{3-1}\\
&6+a_2\\
&6+14\\\\
a_4&6+a_{4-1}\\
&6+a_3
\end{array}$

notice, is an arithmetic sequence, simply adding 6 to get the next term's value.

7 0

2 years ago