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MakcuM [25]
2 years ago
8

Explain how you can use multiplication to show that two fourths and four eighths are equivalent.

Mathematics
1 answer:
Fiesta28 [93]2 years ago
7 0

Answer:

2/4 = 4/8

Numerator multiplication

2 times 2 = 4

Denominator multiplication

4 times 2 = 8

2/4 = 4/8

2/4 and 4/8 simplified = 1/2

Equal

Step-by-step explanation:

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X^3+7x^2+13x+4=0 Show all work
Softa [21]
   
\displaystyle\\
x^3+7x^2+13x+4=0\\\\
x^3+\underbrace{4x^2+3x^2}_{7x^2}+\underbrace{12x+x}_{13x}+4=0\\\\
(x^3+4x^2) + (3x^2 + 12x)+(x+4)=0\\\\
x^2(x+4)+3x(x+4)+(x+4)=0\\\\
(x+4)(x^2 + 3x +1)=0\\\\
x+4 = 0~~~\Longrightarrow~~~\boxed{x_1 = -4}\\\\
x^2 + 3x +1=0\\\\
x_{23}= \frac{-b\pm  \sqrt{b^2-4ac} }{2a}= \frac{-3\pm  \sqrt{3^2-4\cdot 1 \cdot 1} }{2\cdot 1}= \frac{-3\pm  \sqrt{5} }{2}\\\\
\boxed{x_2 = \frac{-3-\sqrt{5} }{2}}\\\\
\boxed{x_3 = \frac{-3+\sqrt{5} }{2}}



4 0
3 years ago
PLEASE HELP ASAP SLOPES OF PARALLEL AND PERPENDICULAR LINES
Kamila [148]

1) Parallel lines have equal slopes.

We need to find the slope of the given line by solving for y.

5x - 15y = 30

-15y = -5x + 30

y = (1/3)x - 2

The slope of the given line is 1/3, so the slope of the parallel line is also 1/3.

2) Line 1 has slope 2/3.

Line 2 has slope 2/3.

3) Line 1 is a vertical line through x = 2. Line 2 is a horizontal line through y = -5. The lines are perpendicular.

4) The given line can is solved for y, so we can see its slope is -5/2. The slopes of perpendicular lines are negative reciprocals. The perpendicular line has slope 2/5. We have point (5, 0) which is (x1, y1) in the slope-point formula.

y - 0 = (2/5)(x - 5)

y = 2/5 x - 2

5) The given equation has slope -3. To find the negative reciprocal, write the slope as a fraction, flip it, and change the sign.

Slope of perpendicular line is 1/3.

3 0
3 years ago
Read 2 more answers
Help please!!! the question is number 2 help me plzz
kirza4 [7]
The fraction is 4/20 for #2.
8 0
3 years ago
HELP FAST PLEASE
gayaneshka [121]

Answer:

ok well your answer would be postive

Step-by-step explanation:

because it would go up the more you sell andlets say you didnt sell at lot to would be postive then slowly drift to negtive

5 0
3 years ago
Will give brainliest. A farmer is painting a new barn. He will need to calculate the surface area of the barn to purchase the co
Maslowich

Answer:

yd^2

Step-by-step explanation:

I took the test :)

6 0
3 years ago
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