The value of a two-digit number is 10 more than 3 times the sum of its digits. The units digit is 1 more than twice the tens dig
it. What is the two-digit number?
1 answer:
Answer:
49
Step-by-step explanation:
the number is "ab" (2 digits).
ab - 10 = 3×(a+b)
a number is actually the sum of multiplying the digits with their associated powers of 10.
a×10 + b - 10 = 3a + 3b
7a - 2b = 10
b-1 = 2×a
b = 2a + 1
7a - 2×(2a+1) = 10
7a - 4a - 2 = 10
3a = 12
a = 4
b = 2×4 + 1 = 9
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Hi there!
2³ [ (15 - 7) × (4 ÷ 2) ] = 8 [ 8 × 2 ] = 8 × 16 = 128
Hence,
The required answer is 128
~ Hope it helps!
75p is the correct answer because 1 lemon is 15p
Answer:
10 ft
Step-by-step explanation:
Square root of 100 = 10
The correct answer is 34.4
Answer:
c.) 15
Step-by-step explanation:
1st Multiply both sides by 5: 5×3/5x=9×5
2nd Simplify: 3x=45
3rd Divide both sides by 3: 3x÷3=45÷3
4th Simplify: x=15