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3 years ago

I need help on knowing whether this is a solvable equation. Along with reasons why. HELP IF YOU CAN :))

Mathematics

1 answer:

leva [86]3 years ago

3 0

To check if x = 9 is the solution, we need to replace every x with 9 and simplify

(3+x)/4 = 3

(3+9)/4 = 3

12/4 = 3

3 = 3

We get the same thing on both sides, so the last equation is a true equation. This means that the first equation is a true equation when x = 9. Therefore, the solution x = 9 is confirmed.

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Help!!!!!!!!!!!!!!!!!!!!!!!

Nataly [62]

Hello.

Firstly, let's isolate x on the equation:

$\mathsf{f(x) = 3x + 3} \\ \\ \mathsf{y = 3x + 3} \\ \\ \mathsf{-3x = -y + 3} \\ \\ \mathsf{x = \dfrac{-y + 3}{3}}$

Now, we can replace 'x' for 'y' and vice-versa:

$\mathsf{f^{-1}(x) = \frac{-x + 3}{3}`}$

Hope I helped.

4 0

3 years ago

What does the distributive property combine to make multiplying whole numbers easier?

IgorC [24]

An algebra property whuch is used to multiply a single term and two or more terms inside a set of parentheses

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3 years ago

Answer the question to become the brainliest

olya-2409 [2.1K]

Answer:

a) The distance travelled on the cycle in the first 14 seconds is 96 meters.

b) The acceleration in the first 4 seconds is 2 meters per square second.

Step-by-step explanation:

a) The distance travelled by the cycle is equal to the area below the curve, which is the sum of the first triangle and the rectangle:

$\Delta x = \frac{1}{2}\cdot \left(8\,\frac{m}{s} \right) \cdot (4\,s-0\,s)+\left(8\,\frac{m}{s}\right)\cdot (14\,s-4\,s)$

$\Delta x = 16\,m +80\,m$

$\Delta x = 96\,m$

The distance travelled on the cycle in the first 14 seconds is 96 meters.

b) The acceleration is represented by the slope of the line, which is determined by definition of secant line:

$a = \frac{v(4\,s)-v(0\,s)}{4\,s-0\,s}$ (1)

$a = \frac{8\,\frac{m}{s}-0\,\frac{m}{s}}{4\,s-0\,s}$

$a =2\,\frac{m}{s^{2}}$

The acceleration in the first 4 seconds is 2 meters per square second.

7 0

3 years ago

A ceramics teacher orders 5 blocks of gray clay for every 3 blocks of red clay.

BartSMP [9]

Answer:

Step-by-step explanation:

trust me it's right it might be easier if you use paoer

3 0

3 years ago

How do I solves these problems

77julia77 [94]

1) 2z= -6
divide both sides by 2
2z/2= -6/2
2 on the left cancels out
z= -3

2) y/-5= 20
multiply both sides by -5
(-5)(y/-5)= (-5)(20)
-5 on the left cancels out
y= -100

Hope this helps! :)

3 0

3 years ago