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jenyasd209 [6]
3 years ago
13

A box of colored crayons contains 9 distinct colors. In how many ways can 2 colors be chosen, assuming that the order of the col

ors chosen that doesnt matter?
Mathematics
1 answer:
shepuryov [24]3 years ago
3 0

Answer:

36

Step-by-step explanation:

We can use combinations

9 choose 2 =

9!/(7!*2!) = (9*8)/2 = 36

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Bank A charges a monthly service fee of $5.00 and a per-check fee of $0.05,
Anna007 [38]

Answer:

2 + .05x = 1.5 +.1x

.5 = .05x

x =10 is number when costs are equal

So the 11th check makes Bank A cheaper

Step-by-step explanation:

3 0
3 years ago
I need help with solving it
mars1129 [50]

The given equation has a slope of \frac{-9}{7}.  Parallel lines have the same slope.

Point-Slope formula: y - y₁ = m(x - x₁)  ; where (x₁, y₁) is the point and "m" is slope

y - y₁ = m(x - x₁)

y - (-4) = \frac{-9}{7}(x - 2)

y + 4 = \frac{-9}{7}x + \frac{18}{7}

<u>  - 4</u>     <u>       - \frac{28}{7}</u>

   y = \frac{-9}{7}x - <u>\frac{10}{7}</u>


7 0
3 years ago
Two companies Company A and Company B offer the same starting salary of $20,000 per year. Company A gives a raise of $1000 each
Bingel [31]
A.) A = 20000 + 1000n
B = 20000(1.04)^n

b.) For A, sn = n/2(2a + (n - 1)d)
s20 = 20/2(2(20000) + 1000(20 - 1)) = 10(40000 + 19(1000)) = 10(40000 + 19000) = 10(59000) = $590,000
For B, sn = a(r^n - 1)/(r - 1)
s20 = 20000((1.04)^20 - 1)/(1.04 - 1) = 20000(2.191 - 1)/0.04 = 20000(1.191)/0.04 = 23822.46 / 0.04 = $595,561.57

c.) Using a graphing calculator, it takes 18 years for the
<span>total amount earned a company B is greater that the total amount of earned at company A.</span>
5 0
3 years ago
One hundred times the quantity six plus five
Andru [333]
100 times (6+5)
100 times 11
100 groups of 11=1100
Hope I helped:)

3 0
3 years ago
Read 2 more answers
Mrs perry shares out 28 biscuits between Gemma and Zak in the ratio 1:6
dsp73
One of them will be given 4 biscuits and the other will be given 24.
5 0
3 years ago
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