1 year ago

Solve the equation: 4x - 5 = 8 + 4x *13-130all real numbersno solution

Mathematics

1 answer:

Hatshy [7]1 year ago

8 0

To solve the equation you can first subtract 4x from both sides. Then,

$\begin{gathered} 4x-5=8+4x\rightarrow\text{original equation} \\ 4x-4x-5=8+4x-4x \\ 0-5=8+0 \\ -5=8 \end{gathered}$

Since you arrive at something false, -5 is not equal to negative 8, so the equation has no solution.

You might be interested in

12) -7(-8 + y - 10 – x); use x = -3, and y = 10 A) 35 B) 40 C) 34 D) 25

cluponka [151]

Answer:

Step-by-step explanation:

56-70+70-21

126-91

5 0

3 years ago

Solve using substitution. y = -10x-10 y = -3x + 4

Nikolay [14]

-10x-10 = -3x+4
+3x +3x
————————
-7x-10 = 4
+10 +10
————————
-7x = 14
then divide -7 on both side of the equal sign
you’ll get x=-2

then plug in -2 as x into one of the equations ( it doesn’t matter which one)

y= -10(-2)-10 = 20-10= 10

so y=10

4 0

3 years ago

Which represents the reflection of f(x) = StartRoot x EndRoot over the y-axis?

klemol [59]

There’s not enough info

8 0

3 years ago

2x + y = 7 y = x + 1 When the expression x+1 is substituted in for y in the first equation, the result is

Charra [1.4K]

2x + y = 7

substitute

2x + (x+1) =7

combine like terms

3x+1 =7

subtract 1 from each side

3x =6

divide by 3

x=2

y = x+1

y =2+1

y=3

Answer: x=2, y=3

6 0

3 years ago

Circle the volume in cm^3 of a cylinder with the radius 5cm and height 8cm

Phantasy [73]

Answer:

628 $cm^{3}$

Step-by-step explanation:

Since the formula to find the volume of a cylinder is $\pi r^{2}$ h, we just need to fill things in.

Since the radius is 5 and the height is 8 and we know that pi=3.14, our new equation is:

3.14*5^2*8.

5*5=25. Now we simplify.

3.14 * 25 * 8

78.5 * 8

628 $cm^{3}$

Hope this helps!! <3 :)

6 0

3 years ago

Read 2 more answers