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Elan Coil [88]
3 years ago
15

6x+7=4x+4y complete the missing value (_,4)

Mathematics
1 answer:
hodyreva [135]3 years ago
8 0

Answer:

x = 4.5

Step-by-step explanation:

6x+7=4x+4y

The first step is to simplify the equation by combining the x terms

Subtract 4x from each side

6x-4x +7 = 4x-4x+4y

2x+7 = 4y

We know the y value is 4

Substitute y=4 into the equation

2x+7 = 4(4)

2x+7 =16

Subtract 7 from each side

2x+7-7 =16-7

2x=9

Divide by 2

2x/2 =9/2

x= 4.5


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Answer:

4 \frac{3}{6}

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An aquarium tank can hold 7200 liters of water. there are two pipes that can be used to fill the tank. the first pipe alone can
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The first pipe pumps out

\dfrac{7200\text{ L}}{48\text{ min}}=\dfrac{150\text{ L}}{1\text{ min}}

while the second pipe pumps out

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So together, both pipes pump out

\dfrac{150+75\text{ L}}{1\text{ min}}=\dfrac{225\text{ L}}{1\text{ min}}=\dfrac{7200\text{ L}}{32\text{ min}}

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4 0
3 years ago
A product is made up of three parts that act independently of each other. If any of the parts is defective, the product is defec
natali 33 [55]

Answer:

The probability that a product is defective is 0.2733.

Step-by-step explanation:

A product consists of 3 parts. If any one of the part is defective the whole product is considered as defective.

The probability of the 3 parts being defective are:

P (Part 1 is defective) = 0.05

P (part 2 is defective) = 0.10 P (part 3 is defective) = 0.15

Compute the probability that a product is defective as follows:

P (Defective product) = 1 - P (non-defective product)

= 1 - P (None of the 3 parts are defective)

= 1 - P (Part 1 not defective) × P (Part 2 not defective) × P (Part 1 not defective)

=1-[(1-0.05)\times(1-0.10)\times (1-0.15)]\\=1-[0.95\times0.90\times0.85]\\=1-0.72675\\=0.27325\\\approx0.2733

Thus, the probability that a product is defective is 0.2733.

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Step-by-step explanation:

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