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2 years ago

Which statement is true about the quadratic equation 8x2 − 5x + 3 = 0?

Mathematics

2 answers:

Dimas [21]2 years ago

9 0

Answer:

plz make brainliest thx

Step-by-step explanation:

Olenka [21]2 years ago

6 0

<span>The leading coefficient is 8. A quadratic equation has the following form: a*x^2 + b*x + c. In such an equation a is called the leading coefficient, which in our case is equal to 8. So the third answer is the correct one.</span>

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Blanche bought a 5-year cd for $7100 with an apr of 2.8%, compounded quarterly, but she wants to take all her money out 9 months

katrin2010 [14]

The formula for getting the accumulated amount(compounded) is;
A =P(1+r%)∧n
Where A = Acumulated amount
P = principle (deposit)
r = interest rate and
n = period
Since the interst is compounded quartly,
period = (5×4)-3 = 17

A = 7100(1+2.8/100)∧17
= 7100×1.028∧17
= 11,353.80

The money she will end up earning in interest on the cd = $11,353.80

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2 years ago

0.075km, 7.6m, 77cm, 780mm from smallest to largest

Neko [114]

Answer:

77cm, 780mm, 7.6m, 0.075km

this is the best answer

7 0

2 years ago

The growth of a species of fish in a lake can be modeled by the function ƒ(x) = 500(1.10)x, where x is time in months since Janu

Lyrx [107]

Answer:

$f(x) = 500(1.1)^x$

And we want to know what repreent the value 500 for this equation. If we see the general expression for an exponential function we have:

$y= ab^x$

Where a is the constant or the initial amount, b te base and x the independnet variable (time)

For this special case we know that:

$a = 500, b =1.1$

And 500 represent the constant or initial value for the function

Step-by-step explanation:

We have the following function given:

$f(x) = 500(1.1)^x$

And we want to know what repreent the value 500 for this equation. If we see the general expression for an exponential function we have:

$y= ab^x$

Where a is the constant or the initial amount, b te base and x the independnet variable (time)

For this special case we know that:

$a = 500, b =1.1$

And 500 represent the constant or initial value for the function

6 0

2 years ago

Find all x in set of real numbers R Superscript 4 that are mapped into the zero vector by the transformation Bold x maps to Uppe

sukhopar [10]

Answer:

$x_3 = \left[\begin{array}{c}4&3&1\\0\end{array}\right]$

Step-by-step explanation:

According to the given situation, The computation of all x in a set of a real number is shown below:

First we have to determine the $\bar x$ so that $A \bar x = 0$

$\left[\begin{array}{cccc}1&-3&5&-5\\0&1&-3&5\\2&-4&4&-4\end{array}\right]$

Now the augmented matrix is

$\left[\begin{array}{cccc}1&-3&5&-5\ |\ 0\\0&1&-3&5\ |\ 0\\2&-4&4&-4\ |\ 0\end{array}\right]$

After this, we decrease this to reduce the formation of the row echelon

$R_3 = R_3 -2R_1 \rightarrow \left[\begin{array}{cccc}1&-3&5&-5\ |\ 0\\0&1&-3&5\ |\ 0\\0&2&-6&6\ |\ 0\end{array}\right]$

$R_3 = R_3 -2R_2 \rightarrow \left[\begin{array}{cccc}1&-3&5&-5\ |\ 0\\0&1&-3&5\ |\ 0\\0&0&0&-4\ |\ 0\end{array}\right]$

$R_2 = 4R_2 +5R_3 \rightarrow \left[\begin{array}{cccc}1&-3&5&-5\ |\ 0\\0&4&-12&0\ |\ 0\\0&0&0&-4\ |\ 0\end{array}\right]$

$R_2 = \frac{R_2}{4}, R_3 = \frac{R_3}{-4} \rightarrow \left[\begin{array}{cccc}1&-3&5&-5\ |\ 0\\0&1&-3&0\ |\ 0\\0&0&0&1\ |\ 0\end{array}\right]$

$R_1 = R_1 +3 R_2 \rightarrow \left[\begin{array}{cccc}1&0&-4&-5\ |\ 0\\0&1&-3&0\ |\ 0\\0&0&0&-1\ |\ 0\end{array}\right]$

$R_1 = R_1 +5 R_3 \rightarrow \left[\begin{array}{cccc}1&0&-4&0\ |\ 0\\0&1&-3&0\ |\ 0\\0&0&0&-1\ |\ 0\end{array}\right]$

$= x_1 - 4x_3 = 0\\\\x_1 = 4x_3\\\\x_2 - 3x_3 = 0\\\\ x_2 = 3x_3\\\\x_4 = 0$

$x = \left[\begin{array}{c}4x_3&3x_3&x_3\\0\end{array}\right] \\\\ x_3 = \left[\begin{array}{c}4&3&1\\0\end{array}\right]$

By applying the above matrix, we can easily reach an answer

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2 years ago

Estella is a marine biologist observing the location of a rare species of sea anemone. She records the depth, in feet, of two se

kicyunya [14]

Answer: 69

Step-by-step explanation:

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2 years ago