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Sunny_sXe [5.5K]
3 years ago
10

Solve using the quadratic formula. (Identify a, b, and c. Write the

Mathematics
1 answer:
vivado [14]3 years ago
5 0

Answer:

Step-by-step explanation:

Here a = 8, b = 4 and c = -2.  The discriminant here is b^2 - 4ac, which, when the above coefficients are substituted, results in:

discriminant = (4)^2 - 4(8)(-2), or 16 + 64, or 80.

The solutions are:

      -(4) ± √80         -4 ± 4√5        4(-1 ±√5)        -1 ± √5

n = ------------------ = ----------------- = --------------- = --------------

            2(8)                    16                 4^2                  4

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Please help me please
Rudik [331]

Step-by-step explanation:

The first box's answer is 5.

I think the second box's answer is 50 % because 5 divided by 10 is 0.5 which equals 50 %.

I hope this helps :)

7 0
3 years ago
Read 2 more answers
Simplify each expression (4ab^3)(-5b^6)(2a^2)
Artemon [7]
<span>(4ab^3)(-5b^6)(2a^2)
= (5 * -4 * 2)(a * a^2)(b^3 * b^6)
= -40a^3b^9

hope it helps</span>
4 0
4 years ago
Solve the proportion below. 7/x=19
alexgriva [62]

Answer:

The value of x is approximately 0.3684.

Step-by-step explanation:

Given:

\frac{7}x}=19

We need to solve the proportion.

Solution:

Now we can see that;

In given equation one number is fraction and other number is whole number.

Now To make whole number into fraction we will divide by 1.

hence the whole number will be equal to;

19=\frac{19}{1}

Now the new equation will be;

\frac{7}{x}=\frac{19}{1}

Now by cross multiplication we get;

7\times1=19\times x\\\\7=19x

Now dividing both side by 19 we get;

\frac{7}{19}=\frac{19x}{19}\\\\x\approx0.3684

Hence the value of x is approximately 0.3684.

6 0
4 years ago
Which best describes the function notation f(3)=15
horsena [70]
If you are given a function, say f(x) = mx+c
This function would give you the relation between two variables, in other words it tells you the output when an input "x" is inserted.

The input for your function would be "x" and the output would be the result of the equation given.

Based on this:
for f(3) = 15, the input (x) would be 3 and the output would be 15

Therefore, the correct choice is:
<span>B) the output is 15, the input is 3</span>
8 0
4 years ago
Read 2 more answers
What is -4/3 on this? Say all that apply (5 stars and brainliest for best answer)
Aleks04 [339]

Answer:

Rational Numbers

Step-by-step explanation:

- An integer in its most simplified form cannot be a decimal nor a fraction, meaning -4/3 nor -0.75 would work.

- A whole number is a number that is either positive or negative but cannot be a decimal in simplified form. -4/3 is -1.333.... which is less than one and negative, meaning it cannot be a whole number due to it obviously being a decimal.

- -4/3  is not a natural number as it is both a decimal and negative.

- -4/3 is not irrational because it repeats when in decimal form.

- -4/3 is rational as in decimal form it repeats and to give more information, rational numbers can be both positive and negative numbers. The 3 that repeats in the decimal form of -4/3 works as a rational number due to this.

Therefore, it would apply to the first square.

Thanks!
- Eddie

3 0
2 years ago
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