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2 years ago

What is the solution for x in the equation? -x + 3/7 =2x -25/7

Mathematics

1 answer:

guapka [62]2 years ago

3 0

Answer:

x = 4/3 is your answer

Step-by-step explanation:

Hope this helps!!

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Select the pair of equations whose graphs are perpendicular.

viktelen [127]

$k:\ y=m_1x+b_1\ \ \ \ and\ \ \ \ l:\ y=m_2x+b_2\\ \\the\ line\k\ is\ perpendicular\ to\ the\ line\ l\ \ \ \Leftrightarrow\ \ \ m_1\cdot m_2=-1\\----------------------------\\\\A.\\2y=-3x+5\ \ \Rightarrow\ \ \ y=- \frac{3}{2} x+2.5\ \ \Rightarrow\ \ m_1=- \frac{3}{2} \\\\2x+3y=4\ \ \Rightarrow\ \ 3y=-2x+4\ \ \Rightarrow\ \ y=- \frac{2}{3}x+1 \frac{1}{3} \ \ \Rightarrow\ \ m_2=- \frac{2}{3} \\\\m_1\cdot m_2=- \frac{3}{2} \cdot (- \frac{2}{3})=1 \neq -1$

$B.\\5x-8y=9\ \ \Rightarrow\ \ -8y=-5x+9\ \ \Rightarrow\ \ \ y= \frac{5}{8} x-1 \frac{1}{8} \ \Rightarrow\ \ m_1= \frac{5}{8} \\\\12x-5y=7\ \Rightarrow\ \ -5y=-12x+7\ \ \Rightarrow\ \ y= \frac{12}{5}x-1 \frac{2}{5} \ \ \Rightarrow\ \ m_2= \frac{12}{5} \\\\m_1\cdot m_2= \frac{5}{8} \cdot \frac{12}{5}= \frac{3}{2} \neq -1$

$C.\\y=2x-7\ \ \Rightarrow\ \ m_1=2 \\\\x+2y=3\ \Rightarrow\ \ 2y=-x+3\ \ \Rightarrow\ \ y= -\frac{1}{2}x+1 \frac{1}{2}\ \ \Rightarrow\ \ m_2=- \frac{1}{2} \\\\m_1\cdot m_2= 2 \cdot (- \frac{1}{2})= -1\ \ \Rightarrow\ \ y=2x-7\ \ \ \ \perp\ \ \ \ x+2y=3$

$
D.\\x+6y=8\ \ \Rightarrow\ \ 6y=-x+8\ \ \Rightarrow\ \ \ y=- \frac{1}{6} x+1 \frac{1}{3}\ \ \Rightarrow\ \ m_1= -\frac{1}{6} \\\\y=2x-8\ \Rightarrow\ \ m_2= 2 \\\\m_1\cdot m_2= -\frac{1}{6} \cdot2=- \frac{1}{3} \neq -1$

7 0

3 years ago

Which is one is correct?

SVEN [57.7K]

Answer:

the 3rd number line

Step-by-step explanation:

first of all, we know That the line starts from zero.

the inequation is n>0

the circle inside should be the hallow one because it's "greater" not greater than or equal to.

n>0 means that n is greater than 0.

in the number line, ( the 3rd one) n is going away from 0. it's going greater than 0.

that is why this is the correct answer.

I hope this clarified any confusion.

3 0

3 years ago

Read 2 more answers

Independent Practice

tangare [24]

Answer:

Option D

Step-by-step explanation:

There are no real solution for the given equation

Answered by GAUTHMATH

8 0

2 years ago

Simplify. (√5+4) (√5 - 2)

son4ous [18]

Answer:

2√5 - 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms/Coefficients
Expand by FOIL

Step-by-step explanation:

Step 1: Define

Identify

(√5 + 4)(√5 - 2)

Step 2: Simplify

Expand [FOIL]: (√5)² - 2√5 + 4√5 - 8
Combine like terms: (√5)² + 2√5 - 8
Evaluate exponents: 5 + 2√5 - 8
Combine like terms: 2√5 - 3

6 0

2 years ago

Read 2 more answers

What’s is 65% of 208

Marrrta [24]

1352.2 or

$\frac{673}{5}$

Step-by-step explanation:

$\frac{65}{100} \times 208 = answer$

7 0

3 years ago