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Sidana [21]
3 years ago
8

Express the hcf/lcm of 48 and 18 as a linear combination

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
7 0

18x + 48y = 6, where x = 3, y = –1

Solution:

Given numbers are 48 and 18.

Write it using linear combination, a = bq + r, where 0 ≤ r < b

   48 = 18 × 2 + 12

⇒ 18 = 12 × 1 + 6 (write 18 using the previous remainder 12)

⇒ 12 = 6 × 2 + 0 (write 12 using the previous remainder 6)

Remainder is zero. So, the process stops.

∴ HCF(18, 48) = 6

Now, Express 6 using 18 and 48.

6 = 18 – 12 × 1

6 = 18 – (48 – 18 × 2)

6 = 18 – 48 + 18 × 2

6 = 18 × 3 – 48 × 1

6 = 18 × 3 + 48 × (–1)

6 = 18x + 48y

18x + 48y = 6, where x = 3, y = –1

Hence 18x + 48y = 6 as the linear combination.

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The Answer should be 7.5 
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What is the value of r?<br> Round your final answer to the nearest whole number.
vaieri [72.5K]

Answer:

r = 13

Step-by-step explanation:

Hypotenuse is the side opposite to 90 degree angle, so hypotenuse is r.

Also, with respect to the angle given, the side "12" is the opposite.

So we have opposite side to angle and we need hypotenuse. Which trigonometric ratio related opposite with hypotenuse? It is SINE.

So we can write:

Sin(67.4)=\frac{Opposite}{Hypotenuse}=\frac{12}{r}\\rSin(67.4)=12\\r=\frac{12}{Sin(67.4)}\\r=12.99

Rounded to nearest whole number, r = 13

8 0
3 years ago
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Solve the equation using addition or subtraction<br> 22 + 15 = d - 17
agasfer [191]

Answer:

d=54

Step-by-step explanation:

22 + 15 = d - 17

37=d-17

54=d

d=54

3 0
2 years ago
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A party rental company has chairs and tables for rent. The total cost to rent 3 chairs and 2 tables is $18. The total cost to re
DerKrebs [107]
C= chair cost
t= table cost

Create two equations with the given information. Solve for one variable in equation one. Substitute that answer in equation two. Then you can solve for the needed information.
3c+2t=$18
5c+6t=$48

3c+2t=18
Subtract 2c from both sides
3c=18-2t
Divide both sides by 3
c=(18-2t)/3

Substitute the value for c in equation two:
5c+6t=$48
5((18-2t)/3)+6t=48
(90-10t)/3+6t=48
Multiply everything by 3 to eliminate fraction
(3)((90-10t)/3)+(3)(6t)=(3)(48)
90-10t+18t=144
90+8t=144
Subtract 90 from both sides
8t=54
Divide both sides by 8
t=$6.75 cost for table

Substitute the t value to solve for c:
3c+2t=18
3c+2(6.75)=18
3c+13.50=18
3c=4.50
c=$1.50 chair cost

Check:
5c+6t=$48
5(1.50)+6(6.75)=48
7.50+40.50=48
48=48

Hope this helps! :) If it does, please mark as brainliest.
7 0
3 years ago
Pls welp will give brainliest to whoever answers correctly first
Sholpan [36]

There are 12 squares in each 4 x 3 grid.

25% of 12 = 3

This means that there should be 3 shaded squares in the grid.

Your answer is B. because it has 3 shaded squares.

7 0
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