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blondinia [14]
3 years ago
7

What is the perimiter of the rectangle? Write your answer in scientific notation.

Mathematics
1 answer:
7nadin3 [17]3 years ago
8 0
You go to a poop school if they teach u that poop
You might be interested in
(7i)(7i)<br>help! please show steps​
exis [7]

Answer:

-49

Step-by-step explanation:

multiply 7 with 7 then i with i and lastly multiply the result numbers

7i × 7i ➡ 7 × 7 = 49

i × i = i^2

49 × i^2 = 49i^2

i^2 = -1 ➡ 49 × (-1) = -49

7 0
3 years ago
Justin needs to make a total of 60 deliveries this week. So far he has completed 27 of them. What percentage of his total delive
andre [41]

Answer:

45%

Step-by-step explanation:

Given:

Total deliveries to be made : 60

Deliveries completed : 27

Deliveries completed as a percentage of the total deliveries

= 27/60 x 100%

= 45%

6 0
4 years ago
Read 2 more answers
alice has 1/5 many miniatures cars as sylvester has . silvester has 35 miniatures cars how many miniatures car does alice have
lora16 [44]
Take 35 and divide it by 5.
35/5 = 7
Alice has 7 miniature cars.
4 0
4 years ago
Write the linear system of differential equations in matrix form then solve the system.
zvonat [6]

In matrix form, the system is

\dfrac{\mathrm d}{\mathrm dt}\begin{bmatrix}x\\y\end{bmatrix}=\begin{bmatrix}1&1\\4&1\end{bmatrix}\begin{bmatrix}x\\y\end{bmatrix}

First find the eigenvalues of the coefficient matrix (call it \mathbf A).

\det(\mathbf A-\lambda\mathbf I)=\begin{vmatrix}1-\lambda&1\\4&1-\lambda\end{vmatrix}=(1-\lambda)^2-4=0\implies\lambda^2-2\lambda-3=0

\implies\lambda_1=-1,\lambda_=3

Find the corresponding eigenvector for each eigenvalue:

\lambda_1=-1\implies(\mathbf A+\mathbf I)\vec\eta_1=\vec0\implies\begin{bmatrix}2&1\\4&2\end{bmatrix}\begin{bmatrix}\eta_{1,1}\\\eta_{1,2}\end{bmatrix}=\begin{bmatrix}0\\0\end{bmatrix}

\lambda_2=3\implies(\mathbf A-3\mathbf I)\vec\eta_2=\vec0\implies\begin{bmatrix}-2&1\\4&-2\end{bmatrix}\begin{bmatrix}\eta_{2,1}\\\eta_{2,2}\end{bmatrix}=\begin{bmatrix}0\\0\end{bmatrix}

\implies\vec\eta_1=\begin{bmatrix}1\\-2\end{bmatrix},\vec\eta_2=\begin{bmatrix}1\\2\end{bmatrix}

Then the system has general solution

\begin{bmatrix}x\\y\end{bmatrix}=C_1\vec\eta_1e^{\lambda_1t}+C_2\vec\eta_2e^{\lambda_2t}

or

\begin{cases}x(t)=C_1e^{-t}+C_2e^{3t}\\y(t)=-2C_1e^{-t}+2C_2e^{3t}\end{cases}

Given that x(0)=1 and y(0)=2, we have

\begin{cases}1=C_1+C_2\\2=-2C_1+2C_2\end{cases}\implies C_1=0,C_2=2

so that the system has particular solution

\begin{bmatrix}x\\y\end{bmatrix}=\begin{bmatrix}e^{3t}\\2e^{3t}\end{bmatrix}

8 0
3 years ago
Pls help<br> show work pls
andre [41]

Answer:

1. x=17

  y= 7 1/3

2. x= 6 2/3

   y=1.7

Step-by-step explanation:

4x=68 because it is isosceles triangle

x=17

y+1/2= 7 5/6

y= 7 1/3

4 0
3 years ago
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