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Ilya [14]
3 years ago
6

Which is the correct way to model the equation-+8 = 7x+(-8) using algebra tiles?

Mathematics
1 answer:
Yuliya22 [10]3 years ago
3 0

Answer:

Step-by-step explanation:

<em>1 </em>negative x-tile and<em> 8</em> positive unit tiles on the left side;<em> 7 </em>positive x-tiles and <em>8 </em>negative unit tiles on the right side

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What are the solutions of the equation x^4 – 5x^2 – 36 = 0? Use factoring to solve.
hammer [34]

Answer:

Step-by-step explanation:

The equation is x^4 – 5x^2 – 36 = 0

We will break the middle term:

Firstly multiply the coefficient of x^4 by constant term of the equation:

1*36 = 36

Now find any two numbers whose product is 36 and their sum or difference is equal to 5

9*4 = 36

9-4 = 5

Now,

x^4 – 5x^2 – 36 = 0

x^4-9x^2+4x^2-36=0

Now take the common:

x^2(x^2-9)+4(x^2-9)=0

(x^2+4)(x^2-9)=0

x²+4=0,

x²= 0-4,

x²=-4,  

Take root on both sides:

√x²=+/-√-4

+/-√-4 = +/-√-1 *√4

√-1 = i

Then +/-√-1 *√4 = √4 i

We know that the root of 4 is 2

Then we can write it as +/-2i

Thus x = 2i , -2i

Now (x^2-9)= 0

x²=0+9

x²=9

Take square root on both sides:

√x²=√9

x=+/-3

x= 3, -3

Therefore the values of x are 2i, -2i, 3 , -3 ....

3 0
3 years ago
Which of the following will result in a rational answer? Which number is not a rational number?
defon

Answer:

what are the #

Step-by-step explanation:??

3 0
3 years ago
23. Which point lies in Quadrant IV?
rjkz [21]
The answer is to this question is c (5,-7)
7 0
3 years ago
Find the surface area of the prism
Dmitry_Shevchenko [17]

Answer:

<h2>          740 m²</h2>

Step-by-step explanation:

The surface area of a prism is a sum of areas of all of its faces

2×(¹/₂×16×15) + 2×(17×10) + 16×10 = 240 + 340 + 160 = 740 m²

4 0
3 years ago
Ill give brainliestetfgeyhe on other question too!! PLS ANSWER I CANT GO TO SUMMER SCHOOL
JulsSmile [24]

Answer:

8 grams

Step-by-step explanation:

The balance is in equilibrium, so the weights of the two sides are equal.

Let the weight of a square be s.

Left side: 2s + 4

Right side: s + 3(4) = s + 12

The weights are equal, so we set the two expressions equal.

2s + 4 = s + 12

s = 8

Answer: The weight of a square is 8 grams.

Question 2: The first step was the combine the like terms; in this example he is subtracting the 3x on both sides of the =.

8 0
3 years ago
Read 2 more answers
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