All categories

3 years ago

9x+18+3x=1

2 answers:

3 0

The error is in the second step they subtracted 3 from both sides but it was a 3x, which you can not do.
Correction.
9x+18+3x=1
12x+18=1
12x=-17
x=-17/12

anzhelika [568]3 years ago

3 0

Answer:

error is in second step.

Step-by-step explanation:

The given equation is 9x + 18 + 3x = 1

Now we will solve this equation and compare it with the given answer.

9x + 18 + 3x = 1

12x + 18 = 1

12x = (-17)

x = $(\frac{-17}{12})$

Now we find the error is in second step.

You might be interested in

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!

Keith_Richards [23]

Answer: $\bold{D.\ \bigg(-\infty, \dfrac{ln\ 4}{0.2}\bigg)}$

<u>Step-by-step explanation:</u>

$y=\dfrac{c}{1+ae^{-rx}}\qquad \text{where growth rate increases from}\ -\infty\ to\ \dfrac{ln\ a}{r}$

$f(x) = \dfrac{15}{1+4e^{-0.2x}}\qquad \rightarrow \qquad a=4, r=0.2$

$\text{So, the growth rate increases over the interval}\ \bigg(-\infty, \dfrac{ln\ 4}{0.2}\bigg)$

4 0

4 years ago

Simplify this question please im really confused

Gemiola [76]

Answer:

option A

Step-by-step explanation:

$\frac{x^a}{x^b} = x^{a-b}$ , $z^0 = 1$

So,

$\frac{18x^5 y}{6xy^8z^0} = \frac{18}{6} \times x^{5 -1} \times y^{1-8} = 3 x^4 \times y^{-7} = \frac{3x^4}{y^7}$

8 0

3 years ago

Write an equation that represents the line.<br> Use exact numbers.

Sergio039 [100]

Answer:

6/5 is the slope, so x=6/5+2.5y

Step-by-step explanation:

I think

3 0

3 years ago

If a varies directly as b, and a = 28 when b = 7, find b when a = 5.

liq [111]

Answer:

b is -16

Step-by-step explanation:

7 0

3 years ago

I NEED HELP NOW!!!!!!!!!!!

Stells [14]

A. They will need 15 cups of dressing.
B. 2:4 30:15 I think this is how you do it if not then it would be that 2lbs is equal to 1 cup of dressing. So 30 divided by 2 is 15.

6 0

3 years ago