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krek1111 [17]
3 years ago
9

How the heck do you solve these type of problems?

Mathematics
1 answer:
Trava [24]3 years ago
7 0
21) 3(2j-k)=108 It is asking you to set the equation equal to j
distribute the 3
6j-3k=108
move k to the other side by adding on both sides
6j=108+3k
divide everything by 6
j=18+0.5k
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Help please :) about to post more too
yKpoI14uk [10]

Answer:

Lets say test tubes = t, and beakers = b

1 pack of (t) is $4 less than 1 pack of (b)

Since i have no prior information we are going to use variables for this equation:

1t (1 pack of test tubes) is $4 less than 1b (1 set of beakers)

so to quantify the equation, we have 8t and 12b.

if b is a number that IS quantifiable such as $5 we can easily figure out this answer.

Lets use and example that 1 set of beakers is $8, if we multiply $8 by 12 (the number of sets of beakers), we get: 96

Using the same example, if 1t is $4 less than 1b than 1t = $4. So, if we multiply $4 by 8 (the amount of packs of test tubes), we get: 32

If you take both of those numbers: 96, and 32 and you divide them you get 3. so that means that 1t = 3b

Answer = 1t = 3b

This may not be correct due to the little information that i got however i hope that, that works out for you :)

5 0
3 years ago
A security guard uses 20 minutes of every hour to walk outside the school, leaving the remaining
Troyanec [42]

Answer:

40/20, 40:20, 40 to 20

Step-by-step explanation:

20min/1hr

40min/1hr

Question order asks ratio from outside time to inside time so the 40 would come first. also, all the above are correct. You can write a ratio as a fraction, with a colon, or with the word to.

6 0
3 years ago
a woman buys a plot of land of area 0.36hectares she pays $8.50 per square meter for the land what is it's total cost​
Elena L [17]

Answer:

$30,600

Step-by-step explanation:

1 hectare = 10,000 m^2

0.36 hectare = 0.36 * 10000 m^2 = 3600 m^2

She pays $8.50 per square meter. Thus, the total cost is:

3600 * 8.50 = \$30,600

Answer: $30,600

3 0
3 years ago
Anyone know the answer ?
liberstina [14]

Answer:

y ≥ -1x +2

Step-by-step explanation:

5 0
3 years ago
The graph is a two-dimensional representation of the
Mila [183]

Answer: D. 12 ft

Step-by-step explanation:

8 0
3 years ago
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