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ivann1987 [24]
3 years ago
5

It's from the chapter : "exponents and powers"i need the workings tooplease help​

Mathematics
1 answer:
labwork [276]3 years ago
5 0

Answer:

505/19

Step-by-step explanation:

Easy

so [3^3-(1/2)^(-3)*(1/19)]

simplify

3^3-8/19

3^3=27

27-8/19

convert element to fraction

(27*19)/19-8/19

combine

(27*19-8)/19

505/19

Have a wonderful day ask me if you have more questions about MATH that goes for anyone who needs math help

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What is the area of a circle if d =7cm​
RideAnS [48]

Answer:

49π / 4

Step-by-step explanation:

πr²

pi x radius²

radius = d ÷ 2 = 3.5

49π / 4

☺️

4 0
3 years ago
Kurt deposited money into his bank account every month. The amount of money he deposited in the first 5 months of 2014 is listed
Irina-Kira [14]

Answer:

that is the answer

Step-by-step explanation:

3 1
3 years ago
Read 2 more answers
Kiera's dance class starts at 4:30 p.m. and ends at 6:15 p.m. How long is her dance class?
qwelly [4]
From 4 PM to 6 PM is 2 hours, and it's 15 minutes after 6, so her dance class is 2 hours and 15 minutes long.
8 0
2 years ago
Read 2 more answers
(x+2)(x-3)(x+5) is identical to x^(3)+ax^(2)-11x+b<br> Find the value of a and the value of b
lutik1710 [3]

Answer:

a = 4 and b = - 30

Step-by-step explanation:

Expand the left side and compare like terms on both sides, that is

(x + 2)(x - 3)(x + 5) ← expand the first pair of factors using FOIL

= (x² - x - 6)(x + 5) ← distribute

= x³ + 5x² - x² - 5x - 6x - 30 ← collect like terms

= x³ + 4x² - 11x - 30

Compare like terms with x³ +ax² - 11x + b

4x² and ax² ⇒ a = 4

+ b and - 30 ⇒ b = - 30

3 0
3 years ago
PLEASE HELP ;-;
PolarNik [594]
10.) The realized income each week is $79.87.
   Add both payments and tips then deduct the tax deductions (multiply the rates to the gross income per week).
   Gross income per week: (4.70 + 3.85) x 13hrs = 111.15
   Tax deductibles: 8.50 (FICA) + 13.67 (federal tax) + 9.11 (state tax) = (31.28)
   Realized income per week: 111.15 - 31.28 = 79.87

11.) The value of the stocks in its second year is $1,340.75.
   Multiply the investment by the percentage increase, then add the result to the investment. You can also use this formula = investment x (1 + %)
   First year: 1,050 x (1 + 0.13) = 1,186.50
   Second year: 1,186.50 x (1 + 0.13) = 1,340.75

12.) a. The total value of your stocks after 2 years is $2,046. Use <em>investment x (1 - %)</em> in computing the decreases while <em>investment x (1 + %)</em> in computing the gains.
   First year: 2,000 x (1 - 0.07) = 1,860
   Second year: 1,860 x (1 + 0.10) = 2,046

   b. The balance in your savings account after 2 years is $2,150.74. Use this formula = investment x (1 + rate)^number of years
   Balance = 2,000 x (1 + 0.037)^2 = 2,150.74

13.) Your question is incomplete.
8 0
3 years ago
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