3 years ago

An earthquake was felt throughout a circular area of 1808 .64 miles what was the radius of the circular area?

1 answer:

6 0

23.994 miles is the radius of the circle. divide 1808.64 by pi and set it equal to x^2. then take the square root of both sides

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#5 I'm having trouble doing that

timofeeve [1]

The distance formula is the square root of (X2 - X1)^2 + (y2 - y1)^2. Let D = y and c = x. Plug in the numbers now. Your equation is now the square root of ( -3 - (-5)) ^2 + (-2 - (-4))^2. Now complete it, your answer is 2.82...

8 0

3 years ago

Solve the inequality for t.<br><br> 11 ≤ t + 4<br><br> Simplify your answer as much as possible.

Softa [21]

Answer:

t≥7

Step-by-step explanation:

11≤t+4

4 moves to the other side hence its sign changes

11-4≤t

7≤t

they change sides

t≥7

the sign was facing t so this does not change

8 0

3 years ago

Read 2 more answers

if a plate of car consists of two letters and four digits and one car is chosen at random, then find the probability that the ca

Luba_88 [7]

Answer:

if u take 1 degree to 78 its answer is 79

Step-by-step explanation:

got it?

7 0

3 years ago

The rectangular backboard of a basketball court needs to be assembled. Its area is given as 18,900 cm2 and the width as 1.8 m.

boyakko [2]

18900cm = 189m
189 / 1.8 = 105m.

The blackboard's length in meters is 105m.

3 0

4 years ago

Read 2 more answers

Make a Matlab script to make row 2 of matrix A equal to first row of A multiplied by the negative of the first element of row 2

stira [4]

Answer:

$X=\begin{Bmatrix}2& 1 &10 \\-3 & 5 & 4\end{Bmatrix}$

Step-by-step explanation:

From the question we are told that

Matrix is given as $A=\begin{Bmatrix}2 & -1 & 10\\-3 & 8 & 4\end{Bmatrix}$

Generally let the change in matrix be given as X

$X_1_2 = 2*(-(-1)) + - 1 = 1X_2_2 = -3 * (-(-1))+ 8 = 5$

Matlab output

$A=[2 -1 10;-3 8 4]\\a=(A(1,1)*-A(1,2))+A(1,2)\\b=(A(2,1)*-A(1,2))+A(2,2)\\X=[A(1,1) a A(1,3); A(2,1) b A(2,3)]\\$

Generally the matrix that makes row 2 of matrix A equal to first row of A multiplied by the negative of the first element of row 2 plus the original row is

$X=\begin{Bmatrix}2& 1 &10 \\-3 & 5 & 4\end{Bmatrix}$

6 0

3 years ago