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erik [133]
3 years ago
6

7/9-2n+1/9 simplify the fraction please help!

Mathematics
1 answer:
koban [17]3 years ago
7 0

Answer: -2*(9n-4)/9

Step-by-step explanation: The -2*(9n-4) is over the 9

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Calculate the area of the shaded region in each figure using 3.14. 12cm and 3cm
Ugo [173]

sorry, im not good with math

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3 years ago
John and Ariana bought school supplies, John spent $10.65 on 4 notebooks and 5 pens. Ariana spent $7.50 on 3 notebooks and 3 pen
timurjin [86]

Cost of 1 notebook is $ 1.85 and cost of 1 pen is $ 0.65

<h3><u>Solution:</u></h3>

Let "a" be the cost of 1 notebook

Let "b" be the cost of 1 pen

Given that John spent $10.65 on 4 notebooks and 5 pens

cost of 1 notebook x 4 + cost of 1 pen x 5 = 10.65

4a + 5b = 10.65 ------ eqn 1

Given that Ariana spent $7.50 on 3 notebooks and 3 pens

3a + 3b = 7.50 ----- eqn 2

Let us solve eqn 1 and eqn 2 to get the values of "a" and "b"

Multiply eqn 1 with 3

12a + 15b = 31.95  ---- eqn 3

Multiply eqn 2 with 4

12a + 12b = 30 ------ eqn 4

Subtract eqn 4 from eqn 3

12a + 15b = 31.95

12a + 12b = 30

(-) ---------------------

3b = 1.95

b = 0.65

Substitute b = 0.65 in eqn 1

4a + 5(0.65) = 10.65

4a = 7.4

a = 1.85

Thus cost of 1 notebook is $ 1.85 and cost of 1 pen is $ 0.65

8 0
3 years ago
I need answers for answers 77 thru 82 please it's due tommorow
coldgirl [10]
77. 0.205 < 0.21
    It's less by 0.005
78. 0.1 = 0.1000
    The extra zeroes do not change the solution. 
79. -0.04 > -0.050
    While this might look greater, remember to check the number line position
80. -1.03 < -0.03
    Same as the last one.
81. \frac{5}{10} < 0.6
    \frac{5}{10} = 0.5 < 0.6
82. -\frac{3}{5} < -0.03
    Same process as 80 mixed with 81.

I hope that these help. 
7 0
4 years ago
What is the radius of the circle with center at (-6, -4) that goes through the point (1, -7) rounded to the nearest tenth?
kotykmax [81]

Answer:

dhususbdgdg

Step-by-step explanation:

hdhakuxtsjwkbevdvsiw in e

6 0
2 years ago
Which equation represents the statement"one-fourth more than a number is equal to two-thirds?
Taya2010 [7]

Answer:

x + 1/4 = 2/3

Step-by-step explanation:

one-fourth more than a number

x + 1/4

4 0
3 years ago
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