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Yuliya22 [10]
3 years ago
6

6n^2-18n-18=6I need the answer!!

Mathematics
1 answer:
nata0808 [166]3 years ago
3 0
6n^2-18n-24=0
6(n^2-3n-4)=0
6(n-4)(n+1)=0
n = -1
n = 4
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complet. each statement by rounding the number to given place value. use the number line to show your work a 53,000 rounded to t
tresset_1 [31]
50,000 because when the number next to the main number is below 5 then you round down...if it is 5 or above then you round up
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3 years ago
Marla made an error when solving the equation shown. What was her error, and how should she fixt it?​
notka56 [123]

Answer:

I need a picture of the problem

3 0
2 years ago
Read 2 more answers
Look at picture. Does anybody know the answer I’m lost?
masha68 [24]

Let x,y be the dimensions of the rectangle. We know the equations for both area and perimeter:

A=xy=36

P=2(x+y)=36 \iff x+y=18

So, we have  the following system:

\begin{cases}xy=36\\x+y=18\end{cases}

From the second equation, we can deduce

y=18-x

Plug this in the first equation to get

xy=x(18-x)=-x^2+18=36

Refactor as

x^2-18x+36=0

And solve with the usual quadratic formula to get

x=9\pm3\sqrt{5}

Both solutions are feasible, because they're both positive.

If we chose the positive solution, we have

x=9+3\sqrt{5} \implies y=18-x=18-9-3\sqrt{5}=9-3\sqrt{5}

If we choose the negative solution, we have

x=9-3\sqrt{5} \implies y=18-x=18-9+3\sqrt{5}=9+3\sqrt{5}

So, we're just swapping the role of x and y. The two dimensions of the rectangle are 9+3\sqrt{5} and 9-3\sqrt{5}

6 0
3 years ago
PLS HELPP DETERMINE THE INTERCEPTS OF THE LINE
kondor19780726 [428]

Answer:10-3

2-4

Step-by-step explanation:

8 0
3 years ago
Paige made $1411.75 last year by investing a total of $15,250 in two accounts: one paying 8.5% annual interest and the other pay
Umnica [9.8K]
Lets x and y are 2 accounts Paige invested
x account invested with annual interest rate 8.5%
y account invested with annual interest rate 10%

x + y =<span>15,250 so x = 15,250 - y
0.085x + 0.1y = </span><span>1,411.75

substitute </span>x = 15,250 - y into 0.085x + 0.1y = 1,411.75

0.085x + 0.1y = 1411.75
0.085(15,250 - y) + 0.1y = 1,411.75
1,296.25 - 0.085y + 0.1y = 1,411.75
0.015y = 115.5
y = 7,700

x = 15,250 - y
x = x = 15,250 - 7,700
x = 7,550

answer

$7,550 invested on account with annual interest rate 8.5%
$7,700 invested on account with annual interest rate 10%
8 0
3 years ago
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