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3 years ago

4(5 + 2x) -5 = 3(3x + 7)

Mathematics

1 answer:

Pie3 years ago

5 0

Answer:

x = -1

Step-by-step explanation:

The first step is get rid of the numbers outside this (). So we will get

20+8x=9x+21 (multiplication) And we can get rid of one side of x by subtract 8x on both sides, an then we will get 20= x+21

And we can move the numbers to one side by subtract 21 on each side, and we will get -1=x

And rewrite it:

x = -1

That's the answer.

You might be interested in

Write the equation of the line in slope-intercept that has passes through the points (2,-5) and (8, 13).

const2013 [10]

Answer:

The equation of the straight line in Slope- intercept form

y = 3 x - 11

Step-by-step explanation:

Explanation:-

Given points are (2,-5) and (8, 13)

The Slope of the line

$m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} } = \frac{13-(-5)}{8-2} = \frac{18}{6} =3$

Equation of the line having slope 'm' and given point

$y - y_{1} = m (x - x_{1} )$

(x₁ , y₁) = ( 2, -5 )

$y - (-5) = 3 (x - 2 )$

y + 5 = 3x - 6

The equation of the straight line in slope intercept form

y = m x + c

y = 3 x - 6-5

y = 3 x - 11

Final answer:-

The equation of the straight line in Slope- intercept form

y = 3 x - 11

8 0

2 years ago

What is the value of y? 72° A. 1080 B. 540 C. 36° D. 720

nadya68 [22]

Answer:

B. 54

Explanation:

Take 72 from 180.

180 - 72 = 108.

Since there are two y's AND they're congruent, divide 108 by two and get 54.

3 0

2 years ago

Read 2 more answers

Ruth Behr has ¾ liters of soda in her refrigerator. She poured 1/8 liter of soda in multiple cups. Enter the number of cups Ruth

Serga [27]

Answer:

Step-by-step explanation:

3/4*8=6

3 0

2 years ago

List from least to greatest 0.25,3/8,5/16

marta [7]

---------------------------------------------
Present the numbers in decimal
---------------------------------------------
0.25 = 0.25
3/8 = 0.375
5/16 = 0.3125

(It is easier to arrange the number using decimals)

---------------------------------------------
Arrange the numbers
---------------------------------------------

0.25 (0.25) , 0.3125 (5/16) , 0.0375 (3/8)

(Put the original numbers given in your final answer)

---------------------------------------------
Answer: 0.25 , 5/16 , 3/8
---------------------------------------------

6 0

2 years ago

How to do question 4?

Nutka1998 [239]

Marie states that any integer greater than 4 will always get an even number of factors.

This can be proven wrong by (for example) 12.

12 has these factors:

1 x 12
2 x 6
3 x 4

12 has an ODD number of factor pairs.

Another example is 28.

28:
1 x 28
2 x 14
4 x 7

28 has an odd number of factor pairs.

I hope this helps!

6 0

3 years ago