Step-by-step explanation:
okay so im in 8th grade and i just worked the problem out and i got , 809 ,
first you add 230 + 349 to see how much she has in her farm
she has 579, then you add 579 because she has that many , and he has 230 so you add 579 +230 and tou get 809
work:
230
+349
----------
579
+230
---------
809
hope i helped!!
Answer:
$2500
Step-by-step explanation:
First, multiply the $15 for the 150 people attending, to get 2250. Next, add the last $250 to get a total cost of $2500
Hopefully this helps- let me know if you have any questions!
Answer: D’Andrea
Explanation: 93/3 = 31
176/4=44
215/5= 43
111/3= 37
44 is greater than 31, 43, and 37 therefore D’Andrea does the most sit-ups per minute.
Given:
The matrix is ![[-8]](https://tex.z-dn.net/?f=%5B-8%5D)
.
To find:
The determinant of given matrix, i.e, 
.
Solution:
If a matrix is A of order 
, then the value of the determinant of that matrix is equal to the element of that matrix.
For example: Let A be the matrix of order .
![A=[a]](https://tex.z-dn.net/?f=A%3D%5Ba%5D)
Then,
The given matrix is . So, the determinant of given matrix, i.e, , is
Therefore, the value of determinant of given matrix is -8.
Answer:
a) x = 10
b) DA = 24
c) perimeter = 110
Step-by-step explanation:
a) Since it's a parallelogram, the opposite sides are of equal length. This means that line DC = AB, so u can substitute in the values and solve for x:
DC = AB
5x - 18 = 2x + 12 (move terms so that like terms are on the same side)
5x - 2x = 12 + 18 (simplify like terms)
3x = 30 (divide by 3 on both sides to isolate the x)
x = 10
b) now that u know the value of x, you can use it to find the length of DA. again, opposite sides are equal, so DA = BC, which means DA = 3x - 6. substitute in your known value of x and solve:
3x - 6
= 3(10) - 6
= 30 - 6
= 24
Therefore, the length of DA - 24
c) Since u know the length of DA (and therefore BC), u just have to find the length of either DC or AB and then multiply that by 2 and add it.
First, substitute in the value of x for either DC or AB (i'm gonna use AB)
2x + 12
= 2(10) + 12
= 20+12
= 32
now, to find the perimeter use this formula: 2(AB) + 2(DA)
this equals to 2(32) + 2(24) = 64+46 = 110
and that's the perimeter!
hope this helps!
