Answer:
16
Step-by-step explanation:
Write the expression in algebraic form:
3x² + 4y²
Notice we only have variables "x" and "y".
Given these variables: x = 2, y = 1, and z = –3
We can <u>ignore "z"</u> because the variable is not in the equation.
<u>Substitute</u> x = 2 and y = 1 in the expression. In other words, replace "x" and "y" with the numbers they give you.
3x² + 4y²
= 3(2)² + 4(1)²
Then, simplify the expression. Remember to follow <u>BEDMAS order</u> (brackets, <u>exponents</u>, division and <u>multiplication</u>, <u>addition</u> and subtraction).
= 3(2)² + 4(1)² Solve exponents first
= 3(4) + 4(1) Solve multiplication
= 12 + 4 Solve addition
= 16 Answer
The value of 3 x squared plus 4 y squared is 16, if x = 2, y = 1, and z = -3.
Answer: x = -1
Step-by-step explanation:
Answer:
If the 1.4% rate of interest is the weekly rate of interest, Then, total first week interest = 1.4(d - w)/100 = 0.014(d - w)
But if the 1.4% rate of interest is a yearly rate of interest compounded weekly, then her total first week interest = 7(d - w)/2600 = 0.00269 (d - w)
Step-by-step explanation:
The interest, I = PRT
P = initial amount of dollars in account = (deposit - withdrawal) = (d - w)
R = rate of interest = 1.4% = 0.014/week
T = time = 1 week
If the 1.4% rate of interest is the weekly rate of interest
I = PRT = (d - w) × 0.014 × 1 = 0.014(d - w)
But if the 1.4% rate of interest is a yearly rate if interest compounded weekly,
P = initial amount of dollars in account = (deposit - withdrawal) = (d - w)
R = rate of interest = 1.4% = 0.014/year
T = time = 1 week = (1/52) years
I = PRT = (d - w) × 0.014 × (1/52) = 7(d - w)/2600 = 0.00269 (d - w)
Hope this Helps!!!
Answer:
Step-by-step explanation:
0.6821 multiplied by 0.0261 is .01754181
putting that into standard from would be 1.754181 x 10^-2
Solution
2014 - 1969 = 45
45 x 0.2633 = 11.8485 = 12
Final Answer:
C) 26.33%