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3 years ago

What is the sum of -8 and it’s opposite?

Mathematics

1 answer:

musickatia [10]3 years ago

4 0

Answer:

5+-8=0

Step-by-step explanation:

Its really easy, first, it says sum, so that means add it and then it said opposite. The opposite of -8 is 8, so put it all together and its 8+-8=0

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Mr. Moore planted a tree in his backyard. His tree grew 3 1/3 feet over five years. if his tree grew at the same rate each year,

alina1380 [7]

Answer:

D. 2/3 per year.

Step-by-step explanation:

3 1

÷ 5

10 × 1

3 × 5

10 ÷ 5

15 ÷ 5

4 0

2 years ago

Solve the equation. x2 18x 81 = 25 a. 14, 4 b. –4, –14 c. 14, –14 d. –4, 4

Snowcat [4.5K]

Answer:

The answer is the option B

$-4,-14$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}+18x+81=25$

$x^{2}+18x+56=0$

$a=1\\b=18\\c=56$

substitute in the formula

$x=\frac{-18(+/-)\sqrt{18^{2}-4(1)(56)}} {2(1)}$

$x=\frac{-18(+/-)\sqrt{100}} {2}$

$x=\frac{-18(+/-)10} {2}$

$x1=\frac{-18+10} {2}=-4$

$x2=\frac{-18-10} {2}=-14$

7 0

3 years ago

Read 2 more answers

What is the factored form of x3+ 64?

I am Lyosha [343]

Answer:

the answer is (x – 4)(x2 + 4x + 16).

7 0

3 years ago

Find the x-values for which f(x) = g(x) if you know that f(x) = x2 and g(x) = 9.

Juli2301 [7.4K]

Answer:

For the values of x = 3 and x = -3 the given functions f(x) = g(x)

Step-by-step explanation:

Here, the given functions are

$f(x) = x^{2} \\g(x) = 9$

Now, given f(x) = g(x)

⇒ $x^{2} = 9$

or, $x = \sqrt{9} \implies x = 3, -3$

Hence, for the values of x = 3 and x = -3 the given functions f(x) = g(x)

5 0

3 years ago

Ben is flying a kite directly over his buddy Franklin, who is 125 meters away. His kite string makes a 39° angle with the level

NISA [10]

Answer:

a=101.223

Step-by-step explanation:

use SOCATOA

or an online calculator

https://www.calculator.net/triangle-calculator.html?vc=x&vx=z&vy=y&va=39&vz=125&vb=90&angleunits=d&x=59&y=16

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3 years ago