Ggeasy
we can eliminate the y terms by adding the equations
x-y=11
<u>2x+y=19 +</u>
3x+0y=30
3x=30
divide by 3
x=10
subb ack
x-y=11
10-y=11
minus 10 both sides
-y=1
times -1
y=-1
(x,y)
(10,-1)
Answer:
Total lizards in the store are 64.
Step-by-step explanation:
Total food that Sara owns for the pet = 4.25 pounds
One pound of food is needed for the number of lizards = 15
Now we are required to find the number of lizards in the store. To find the number of Lizards we must multiply the total food with the number of lizards for one pound food.
Total lizards = Total food × lizards for one pound food.
Total lizards = 4.25 × 15
Total lizards = 63.75 or 64 lizards.
Answer:
40 choices of combinations can be made.
Step-by-step explanation:
Given that Brian wants to buy a shirt, and he can choose an XL, L, M, S, or XS long-sleeve or short-sleeve in white, black, pink, or blue, to determine how many choices of combinations does he have, the following calculation must be performed:
XL + L + M + S + XS = 5
LS + SS = 2
W + B + P + B = 4
5 x 2 x 4 = X
10 x 4 = X
40 = X
Thus, 40 choices of combinations can be made.