Because 6 * 8 + ( - 2 )* 24 = 48 - 48 = 0 , the vectora u and v are orthogonal ;
Two vectors are orthogonal if their dot product is zero.<span />
A)
s = sweater
j = jeans
Equations:
4s + 2j = 140
2s + 3j = 150
B)
4s + 2j = 140
2s + 3j = 150
Multiply (-2) to the second equation
-2 (2s + 3j = 150)
-4s - 6j = -300
Now you have the equations:
4s + 2j = 140
-4s - 6j = -300
-----------------------------add
-4j = -160
j = 40
4s + 2(40) = 140
4s + 80 = 140
4s = 60
s = 15
The cost for a sweater is $15 and the cost for a jean is $40
We used the elimination method to solve the system of equations.
C)
Each pair of jean, she will buy 3 sweaters so total = 40 + 3(15) = $85
Total cost for 1 pair of jeans and 3 sweaters = $85
If she has $225 the
$225 / $85 = 2.64
2 jeans = 2 x 40 = $80
6 sweaters = 6 x $15 = $90
So She can only buy 2 jeans and 6 sweaters
Answer:
$2070
Step-by-step explanation:
Answer:
Width: 3
Hight:3
explain, I made a block that was 4 blocks long then using the left over material i rearranged the blocks
Step-by-step explanation:
The perimeter of a two-dimensional figure is always the sum of its sides.
The exercise mat has a perimeter (P) of <u>36 feet</u>. ...
Let length be <em>L</em>, and width be <em>W</em>.
P = 36
L = 2w
P=2(l+w)=2·(12+6)=36
L = 12 feet
W = 6 feet
