Answer:
L + 0.50C = 249
0.5L = C
Step-by-step explanation:
hope this helps :)
Answer:
k = 15
Step-by-step explanation:
∵ x² - 8x + k = 0 ⇒ has two roots x1 and x2
∵ ax² + bx + c = 0 has two roots
∴ The sum of roots = -b/a and the product of them = c/a
∵ a = 1 , b = -8 and c = k
∴ x1 + x2 = -(-8)/1 = 8
∴ x1 + x2 = 8 ⇒ (1)
∵ 3x1 + 4x2 = 29 ⇒ (2)
Multiply (1) by -4
∴ -4x1 - 4x2 = -32 ⇒ (3)
Add (2) and (3)
∴ -x1 = -3
∴ x1 = 3
By substituting value of x1 in (1)
∴ 3 + x2 = 8
∴ x2 = 5
∴ The roots are 3 and 5
∴ c/a = 3 × 5 = 15 ⇒ (a = 1)
∴ c = 15
∴ k = 15
1. Round to the nearest whole dollar and add: 17 + 29 = $46
Estimated he spent about $46
2. subtract the two amounts from 50:
50-16.75 - 28.92 = $4.33 change back
Answer:C
Step-by-step explanation:
5= 2/5a
Multiply by 5/2 on each side
5/2 x5=2/5ax5/2
25/2=10/10a
25 divided by 2 is 12 1/2
Answer:
14
Step-by-step explanation:
2(k+4)=3(k-2)
2k+8=3k-6
8+6=3k-2k
k=14
mark brainlist plzz