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3 years ago

Please help me on number 10 and 11

Mathematics

1 answer:

denpristay [2]3 years ago

3 0

To solve number 10, you should do just as it says and type it into a calculator. To save you the trouble, I have already done this. It equals approximately 4.26.

As for number 11, you have not included the whole question, so there is not currently enough information to solve it.

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2. Solve the equation using the quadratic formula. -4x2 + 40x + 16 = 0 Page 1 of 2

kumpel [21]

The solution to given quadratic equation is x = -0.3851 or x = 10.3851

Solution:

Given equation is:

$-4x^2 + 40x + 16 = 0$

To find: solve by quadratic equation formula

$\text {For a quadratic equation } a x^{2}+b x+c=0, \text { where } a \neq 0\\\\x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Using the above formula,

$\text{ For} -4x^2 + 40x + 16 = 0 \text{ we have } a = -4 ; b = 40 ; c = 16$

Substituting the values of a = -4 ; b = 40 ; c = 16 in above quadratic formula we get,

$\begin{aligned}&x=\frac{-40 \pm \sqrt{40^{2}-4(-4)(16)}}{2 \times-4}\\\\&x=\frac{-40 \pm \sqrt{1600+256}}{-8}\\\\&x=\frac{-40 \pm 43.081}{-8}\\\\&x=\frac{-40+43.081}{-8} \text { or } x=\frac{-40-43.081}{-8}\\\\&x=-0.3851 \text { or } x=10.3851\end{aligned}$

Thus the solution to given quadratic equation is x = - 0.3851 or x = 10.3851

8 0

3 years ago

The following scatter plot demonstrates that there is no correlation between the two quantities. True or False? [Picture attache

Alona [7]

Thats a random scatter. can't see any pattern. so, True.

4 0

3 years ago

Read 2 more answers

Can you help? Find the distance between A(8,3) and B(9,0) to the nearest hundredth.

frez [133]

Answer:

3.16

Step-by-step explanation:

distance = $\sqrt{(8-9)^{2} +(3-0)^{2} }$

= $\sqrt{1^{2} +3^{2} }$

= $\sqrt{1+9}$

= $\sqrt{10}$

=3.16

8 0

3 years ago

Explain 5 different ways you use Math in your everyday life. This is a telpas thing btw

Jobisdone [24]

Answer:

School, Looking at what episode of anime I am on, Looking at the time, Looking at my calendar, and another is when I am doing brain teasers!

Step-by-step explanation:

Does this count?

6 0

3 years ago

Read 2 more answers

F(x) = x4/5(x − 6)2 find the critical numbers of the function

Fiesta28 [93]

You can find the critical numbers by finding the derivative of the function and solving for 0.

F(x) = x(4/5)(x-6)(2) = x(8/5)(x-6) = (8/5)(x^2 - 6x)

Taking the derivative:
F'(x) = (8/5)(2x - 6)
F'(x) = 0 at x = 3,

critical number = 3

5 0

3 years ago