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4 years ago

If A = {a, b, c, d} and B = {b, c, e, f}, A U B is which set?

Mathematics

2 answers:

qwelly [4]4 years ago

4 0

Answer:

{a, b, c, d, e, f} 1st Option

Step-by-step explanation:

"U" means unite them together so you would put all them (numbers/letters) together, if a and b sets have the same letters, only mention them once in order.

HOPE THIS HELPS!!! <3 <3

meriva4 years ago

3 0

Answer:

Step-by-step explanation:

second option is correct

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Mrs. Huang operates a soybean farm. She buys many supplies in bulk. Often the bulk products need to be custom mixed before Mrs.

Evgen [1.6K]

To solve this problem, let us first assign variables. Let us say that:

x = volume of 67% herbicide solution

y = volume of 46% herbicide solution

The total volume should be 42 liters therefore:

x + y = 42

x = 42 – y --> 1

The component mass balance on the pure herbicide would be:

0.67 x + 0.46 y = 0.55 (42) --> 2

Substituting equation 1 to 2:

0.67 (42 – y) + 0.46 y = 23.1

28.14 – 0.67 y + 0.46 y = 23.1

- 0.21 y = - 5.04

y = 24 L

Calculating for x using equation 1:

x = 42 – 24

x = 18 L

Therefore we only need 18 L of the 67% herbicide solution.

Answer:

A. 18 L

6 0

4 years ago

Read 2 more answers

Charlie owns a computer repair service. For each computer, they charge $50 plus $45 per hour of work. A linear equation that exp

madreJ [45]

The linear equation is 45x+50

Linear equation is the equation having the degree 1

Given that the charge per computer repair service is $50

The charge per hour of work is $ 45

We need to show the linear equation that expresses the total amount of money Charlie earns per computer is y

So , Let the number of hours be x

Therefore, the Charlie working hours charge will be 45x

The total amount of money Charlie earns per computer is y

Therefore the linear equation will be

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Where y = Total amount of money

x = number of hours

Hence the linear equation is y = 45x+50

Learn more about linear equation here

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8 0

2 years ago

Maggie ebought 52 ounces of swordfish selling for $6.92 per pund. What was the total cost?

UNO [17]

The total cost was $22.49

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3 years ago

Write down the 3rd term in the sequence given by: T(n) = n2 + 4 pls explain how to do It plsss

crimeas [40]

Answer:

T(3) = 13

Step-by-step explanation:

If we are trying to find the 3rd term of this <em>specific </em>sequence, then we simply plug in 3 as n.

T(3) = (3)² + 4

T(3) = 9 + 4

T(3) = 13

However, this isn't proper notation for an arithmetic or geometric sequence.

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4 years ago

Read 2 more answers

A confided aquifer has a piezometric height of 30 feet before being pumped. The well is then pumped at 250 gallons/day for a ver

Karo-lina-s [1.5K]

Answer:

$d_2=-8.32ft$

Step-by-step explanation:

From the question we are told that:

Height of first draw down $h=30$

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Well 1 depth $d_1=10ft$

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Radius $r=0.5$

Well 2 depth $d_2=50ft$

Generally the Thiem's equation for Discharge is mathematically given by

$Q=\frac{2\piT(h_2-h_1)}{ln(\frac{r_2}{r_1})}$

$250=\frac{2*\pi 10 (10-d_2)}{ln(\frac{50}{0.5})}$

$1151.293=2*\pi 10 (10-d_2)$

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8 0

3 years ago