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____ [38]
3 years ago
5

The bar graph shows the numbers and colors of cars in a parking lot. The total number of silver and black cars equal the total n

umber of red, white, and blue cars. How many black cars in the parking lot? A)9 , B) 10, C)15, D)30

Mathematics
2 answers:
Bingel [31]3 years ago
5 0
Your answer is 15 Hope this helps!
Angelina_Jolie [31]3 years ago
3 0
Red + white + blue = silver +black
4 + 9 + 2 = 6 + black
15 = 6 + black
-6. -6
9=?

There are a) 9 back cars
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Organisers want to raise a total of £250 for a new equipment. The sponsored walk raises £150. What % of the total does the spons
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3 years ago
Eric owns and operates the hot food truck.The expression 3.25b+2h gives the cost of burgers and h hot dogs.What is the cost of 4
Nat2105 [25]
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5 0
3 years ago
Solve the following systems of equations 2a+4b+c=5 ; a-4b=-6 ; 2b+c=7.
SOVA2 [1]

Answer:

a = -2

b = 1

c = 5

Step-by-step explanation:

Given:

2a + 4b + c = 5 ............(1)

a - 4b = - 6

or

a = 4b - 6 .............(2)

2b + c = 7

or

c = 7 - 2b   ...........(3)

substituting 2 and 3 in  1, we get

2(4b - 6 ) + 4b + (7 - 2b) = 5

or

8b - 12 + 4b + 7 - 2b = 5

or

10b - 5 = 5

or

b = 1

substituting b in 2, we get

a = 4(1) - 6

or

a = -2

substituting b in 3, we get

c = 7 - 2(1)

or

c = 5

thus,

a = -2

b = 1

c = 5

8 0
2 years ago
Suppose that a die-hardly-ever battery has an exponential time-to-failure distribution with a mean of 48 months. at 60 months, t
mel-nik [20]

Since the time to failure distribution is exponential, the distribution is F (n) = 1 – e ^ (-x/48)

The probability of failure between months 60 and 72 is the same as the probability that the battery will fail in 12 months, since the exponential distribution is memoryless F (12) = 0.221

<span> </span>

7 0
3 years ago
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