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Dafna1 [17]
2 years ago
8

Help pls some one pls​

Mathematics
1 answer:
Gennadij [26K]2 years ago
4 0
ANSWER: 38.25 pounds

EXPLANATION:

One gallon weighs 8.5 pounds. In 4 1/2 there are 4 gallons so we’re need to figure out how much 4 gallons weigh. To do this multiply the weight of one gallon by the number of gallons.

4 x 8.5 = 34

So we know that 4 gallons is 34 pounds

Now we still have half a pound we need to find the weight of. To find the weight of half a pound divide the weight of one gallon by 2.

8.5 divided by 2 = 4.25

Now we add the 4 pounds and the 1/2 to get the weight of them.

34 + 4.25 = 38.25

So the answer is 38.25 pounds

If you need more of an explanation let me know I can try to explain better :)

GOOD LUCK WITH THE REST IF YOUR WORK! :)
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Find the GCF for each set of numbers<br> 3. 18, 24<br> 4. 18, 90
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Show that if a and b are positive integers, then ab = gcd (a, b). lcm (a, b) . [Hint: Use prime factorizations of a and b and th
AleksandrR [38]

Answer:

ab=\gcd(a,b)\cdot \text{lcm}(a,b)

Step-by-step explanation:

Using the hint, write a and b in the following prime factorization:

a=p_1^{x_1}p_2^{x_2}\cdots p_t^{x_t}\cdot q,

b=p_1^{y_1}p_2^{y_2}\cdots p_t^{y_t}\cdot r,

where  \gcd(p_i,r)=1,\ \gcd(p_i,q)=1,\ \gcd(r,q)=1,\ \gcd(p_i,p_j)=1, for i ≠ j.

Then by the formulae for gcd(a,b) and lcm(a,b) we know that:

\gcd(a,b)=p_1^{\min(x_1,y_1)}p_2^{\min (x_2,y_2)} \cdots p_t^{\min(x_t,y_t)}

\text{lcm}(a,b)= q\cdot r\cdot p_1^{\max(x_1,y_1)}p_2^{\max(x_2,y_2)}\cdots p_t^{\max(x_t,y_t)}

Note that the expression \min(x_i,y_i)+\max(x_i,y_i)=x_i+y_i for all i, since if the minimum is, <em>without loss of generality</em>, x_i, then the maximum must be y_i, and viceversa. Then, it is straightforward to verify that when we multiply gcd(a, b) and lcm(a, b) its prime factorization matches the prime factorization of ab, and so we can see the equaility holds:

\gcd(a,b)\cdot \text{lcm}(a,b)=ab.

7 0
3 years ago
I NEED HELP AND I WILL MARK YOU ON BRAINLIST.
sasho [114]

Answer:

12 and 30

Step-by-step explanation:

HFC:

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12

18

24

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LCM:

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-------

12

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36

48

60

7 0
2 years ago
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