3 years ago

What is a solution and what is not?

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

3 0

Cant see the rest of the question ;-;

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-5 = x divided by 2.4

snow_tiger [21]

Answer:

x=12

Step-by-step explanation:

-5= x/2.4

multiply both sides by 2.4 to isolate x

-5*2.4= (x/2.4)*2.4

12=x

5 0

3 years ago

Use the definition of a derivative to find f’(x).

tatyana61 [14]

Answer:

f'(x) = $-\frac{9}{x^2}$

Step-by-step explanation:

i) f(x) = 9 / x

ii) f'(x) = $$\lim_{h\to 0} \frac{f(x+h) - f(x)}{h} $ \hspace{0.2cm}$

$= $\lim_{h\to 0} \frac{\frac{9}{x+h} - \frac{9}{x} }{h} = \hspace{0.1cm} $\lim_{h\to 0} \frac{9x - 9(x+h)}{hx(x+h)} $ \hspace{0.1cm} = \hspace{0.1cm}$\lim_{h\to 0} \frac{-9h}{hx(x+h)} = $\lim_{h\to 0} \frac{-h}{x(x+h)} = \frac{-9}{x^2}$$

7 0

3 years ago

Missing value 0.003 x what = 3

Tomtit [17]

2x=3
so substitute y=mx+c
rise/run

3 0

3 years ago

Choose the graph of the function f(x)=1/2 times -2.

Lesechka [4]

Answer:

ur correct u got it.

Step-by-step explanation:

4 0

3 years ago

The product of 4 and a number plus the product of 3 and the same number is 35. What is the number?

shutvik [7]

The number is 15,
I really don’t know if there’s such a strategy to find this out, I just used trial & error:
(a*4)+(a*3)=35
(5*4)+(5*3)=35
20+15=35

6 0

3 years ago