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3 years ago

What two numbers can be used in place of the? To make the statement true. I?I =8/9

1 answer:

7 0

Since the absolute value makes numbers absolute or real numbers you could replace the ? with 8/9 or -8/9 since the negative will go away because of the absolute value sign.

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What is 1396500000 as a scientific notation. PLEASE I NEED NOW!!!!!! THANK YOU!!

Llana [10]

Answer:

1.3965*10^9

Step-by-step explanation:

5 0

3 years ago

Verify that the roots of 5x²- 6x -2 = 0 are <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%20%2B%20%5Csqrt%7B19%7D%20%7D%7B5%7D%2

Mice21 [21]

Answer:

Proof below.

Step-by-step explanation:

Quadratic Formula

$x=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}\quad\textsf{when }\:ax^2+bx+c=0$

Given quadratic equation:

$5x^2-6x-2=0$

Define the variables:

a = 5
b = -6
c = -2

Substitute the defined variables into the quadratic formula and solve for x:

$\implies x=\dfrac{-(-6) \pm \sqrt{(-6)^2-4(5)(-2)}}{2(5)}$

$\implies x=\dfrac{6 \pm \sqrt{36+40}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{76}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{4 \cdot 19}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{4}\sqrt{19}}{10}$

$\implies x=\dfrac{6 \pm2\sqrt{19}}{10}$

$\implies x=\dfrac{3 \pm \sqrt{19}}{5}$

Therefore, the exact solutions to the given quadratic equation are:

$x=\dfrac{3 + \sqrt{19}}{5} \:\textsf{ and }\:x=\dfrac{3 - \sqrt{19}}{5}$

Learn more about the quadratic formula here:

brainly.com/question/28105589

brainly.com/question/27953354

3 0

2 years ago

Read 2 more answers

Explain how to find coordinates for Q

Vesna [10]

Answer:

Q = (4, - 1)

Step-by-step explanation:

DF is the diameter of the circle with center Q.

So, Q is the midpoint of DF.

By mid point formula.

$Q = \bigg( \frac{1 + 7}{2}, \: \: \frac{3 - 5}{2} \bigg) \\ \\ Q = \bigg( \frac{8}{2}, \: \: \frac{ - 2}{2} \bigg) \\ \\ Q = (4, \: \: - 1)$

6 0

3 years ago

Read 2 more answers

What is the simplified form of the following expression? (5 points)

jek_recluse [69]

$\huge \boxed{\mathbb{QUESTION} \downarrow}$

Simplify ⇨ (n⁵)(n²)

$\large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}$

$\tt \: ( n ^ { 5 } ) ( n ^ { 2 } )$

To multiply powers of the same base, add their exponents.

$\tt \: n ^{5 + 2} \\$

Add 5 and 2 to get 7.

$= \boxed {\boxed{\bf \: {n}^{7} }}$

The first option n⁷ is the correct answer.

5 0

3 years ago

How to slove this question 7v-v=12

vampirchik [111]

7v-v=12 subtract v from 7v to get 6v
6v=12 divide 12 by 6 to find variable
v=2

5 0

3 years ago