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AleksAgata [21]
2 years ago
14

IF A = [5, 6, 7] and B = [7, 8, 9] then A ∪ B is equal to

Mathematics
2 answers:
motikmotik2 years ago
8 0

Step-by-step explanation:

while uniting there A and B double number shouldn't be written in place of double we should write only one number and that is the model for these type of. question

Zielflug [23.3K]2 years ago
4 0

Answer:

=[5,6,7,8,9]

Step-by-step explanation:

a=(5,6,7)

B=(7,8,9)

AUB=(5,6,7)U(7,8,9)

=[5,6,7,8,9]

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its -2x

Step-by-step explanation:

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A car travelled 100 km with half the distance at 40 km/h and the other half at 80 km/h. Find the average speed of the car for th
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We must look at this question in steps
The first half of the journey is travelled at 40 km/h
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3 years ago
F(x) = 4x2 – 7x + 7<br> Find f (7)
Colt1911 [192]

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4×2÷8

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A theater group made appearances into cities the hotel charge before tax and the second city was 1500 higher than the first the
Svetlanka [38]

Answer:

The hotel charge in each city before tax was <u>$5125</u> of the first city and <u>$3625</u> of the second city.

Step-by-step explanation:

Given:

A theater group made appearances into cities the hotel charge before tax and the second city was 1500 higher than the first.

The tax of the first city was 6% and the tax of the second city was 10%.

Total hotel tax paid for two cities with $670.

Now, to find the hotel charge in each city before tax.

Let the hotel charge in first city before tax be x.

And the hotel charge in second city before tax be y.

<em>So, as the hotel charge of the second city was 1500 higher than the first.</em>

<em>Thus</em>,

y=x-1500   ........(1)

<em>And as given, the tax of the first city was 6% and the tax of the second city was 10%, total hotel tax paid for two cities with $670.</em>

6% of x + 10% of y = $670.

\frac{6x}{100} +\frac{10y}{100} =670

0.06x+0.10y=670

Substituting the value of y from equation (1) we get:

0.06x+0.10(x-1500)=670

0.06x+0.10x-150=670

0.16x-150=670

<em>Adding both sides by 150 we get:</em>

0.16x=820

<em>Dividing both sides by 0.16 we get:</em>

x=5125.

<em>The hotel charge in first city before tax = $5125.</em>

Now, substituting the value of x in equation (1) we get:

y=x-1500

y=5125-1500

y=3625.

<em>The hotel charge in second city before tax = $3625.</em>

Therefore, the hotel charge in each city before tax was $5125 of the first city and $3625 of the second city.

5 0
3 years ago
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