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SpyIntel [72]
2 years ago
13

what is mathematical format in Algebra is it just simplifying ,my teacher said he mainly cares about mathematical format

Mathematics
1 answer:
jeyben [28]2 years ago
4 0
You must use the Order of Operations
Parentheses
Exponents
Multiply
Divide
Add
Subtract

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A store is having a sale on jelly beans and trail mix. For 8 pounds of jelly beans and 3 pounds of trail mix, the total is $18.
topjm [15]

Answer: each pound of jelly beans costs 1.5 dollars, or $1.50, and each pound of trail mix costs 2 dollars, or $2

Step-by-step explanation:

j = jellybeans

t = trail mix

2j + 5t = 13

8j + 3t = 18

To solve this, we want to isolate a variable, and solve for the other. Let's do that with each equation.

2j + 5t = 13

2j = 13 - 5t

j = (13 - 5t) / 2

8j + 3t = 18

8j = 18 - 3t

j = (18 - 3t) / 8

Now that we have isolated the variable j in each equation, we can set the two right-sides equal to each other, and solve for t.

(13 - 5t) / 2 = (18 - 3t) / 8

By multiplying both sides by 8, this becomes simpler to look at.

8 * (13 - 5t) / 2 = 18 - 3t

4 * (13 - 5t) = 18 - 3t

4 * 13 - 4 * 5t = 18 - 3t

52 - 20t = 18 - 3t

52 = 18 + 17t

34 = 17t

34 / 17 = t

t = 2

Now that we have solved for t, we can trivially plug it into one of the other equations to solve for j. Let's choose the first equation, as it doesn't matter which we choose.

t = 2

2j + 5t = 13

2j + 5 * 2 = 13

2j + 10 = 13

2j = 13 - 10

2j = 3

j = 1.5

So, each pound of jelly beans costs 1.5 dollars, or $1.50, and each pound of trail mix costs 2 dollars, or $2.

6 0
2 years ago
Melissa buys 3 and 3/4 gallon S of iced tea. Debora buys 7 quarts more than Melissa How much tea do they buy although? Express y
alexdok [17]
All Togther they bought 37 quarts of iced tea
7 0
3 years ago
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Solve picture question​
Naddik [55]

Answer:

As it ایس the correct answer is 45

78

7.90

7 0
1 year ago
Read 2 more answers
Anyone know whats 9 + 10 ??
Zarrin [17]

Answer: 21

Step-by-step explanation:

ahaha but for real it is 19

6 0
3 years ago
COMPETE<br> Answer as a dec<br> 2.8+7.22<br> DONE
Vadim26 [7]

Answer:

Hi, there my name is 1frogaroni and I will be helping you out today!

Step-by-step explanation:

The answer to your question is 10.02.

2.8+7.22

=2.8+7.22

=10.02

You must simplify. if this helped I would be happy to get brainliest in order for me to rank up.

Have a great day!

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2 years ago
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