Step 2 is wrong: 4x - x = 5x
X = -11 is the actual answer, pretty sure.
Hope this helps and please mark as brainliest. If you have any other doubts, feel free to ask.

4 0

2 years ago

Kesley is thinking of a number. She says that it’s the sum of a number and nine. Multiplied by 2/3, is equal to -18.

Aliun [14]

Answer:

Only the firsts and fourth choices ( $\frac{2}{3}(x+9)=-18$ and $\frac{2}{3}x+6=-18$ )

Step-by-step explanation:

Turn the equation into words:

"A number plus 9"

$(x+9)$

"Multiplied by $\frac{2}{3}$ "

$\frac{2}{3} (x+9)$

"Is equals to -18"

$\frac{2}{3}(x+9)=-18$

Distribute to find the second equation:

$\frac{2}{3}(x+9)=-18\\\frac{2}{3}x+6=-18$

7 0

2 years ago

Australian glitter ants reproduce so that their population doubles every 15 days. If there are 3 ants initially, the equation is

Firlakuza [10]

Answer:

4.73%

Step-by-step explanation:

y = 3×2^(t/15) = 3×(2^(1/15))^t = 3×1.0472941^t

In this form, ...

1 +r = 1.0472941

r = .0472941 ≈ 4.73%

The daily increase is about 4.73%.

5 0

2 years ago

Evaluate this surd √50+√18-√98​

Evaluate this surd √50+√18-√98