Lauren brings brownies to class one day. She gives 3/5 of them to her friends Gareth Tammy and Camilla. If she gave them 21 brownies, how many did she bring to class?PLEASE HELP ME!!!!
Answers
The number of brownies Lauren brought to the class is 35.
What is a fraction?
A fraction is written in the form of a numerator and a denominator where the denominator is greater that the numerator.
Example: 1/2, 1/3 is a fraction.
We have,
The number of brownies given to her three friends = 3/5
3/5 = 21 brownies
Now,
The total brownies she brought to the class.
3/5 = 21 brownies
Multiply 5/3 on both sides.
1 = 5/3 x 21 brownies
1 = 35 brownies
Thus,
She brought 35 brownies to the class.
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3x= 105
x= 35
She brought 35
Answer to comment:
1/7(14x+7)-5=6 /*7
14x+7-35=42
14x=42-7+35
14x= 70 /:14
x= 5
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p.s" tell me if it is a geometric sequence or arithmetic and find the explicit formula
Answers
The amount of money that remained from Takuya's presence during month n is expressed as an=120-20n and the sequence is an arithmetic sequence.
What is an arithmetic sequence?
The arithmetic sequence is the sequence where the common difference remains constant between any two successive terms. Let us recall what is a sequence. A sequence is a collection of numbers that follow a pattern. The general form of an arithmetic sequence is an=a+(n-1)d.
If Takuya's parents gave him $100 as a birthday gift and she spent $20 each month on board games until his money ran out, this means he keeps spending $20 every month and his money keeps reducing by the same amount each month until his money ran out, the following can be inferred;
initial amount = $100
If he spends $20 each month,
Balance at the end of 1st month = $100-$20 = $80
Balance at the end of 2nd month = $80-$20 = $60
Balance at the end of 3rd month = $60-$20 = $40 and so on
Since the amount keeps reducing by the same value i.e $20, then the sequence formed is an arithmetic sequence.
a is the first term of the sequence = 100
d is the common difference = 80-100 = 60-80 = 40-60 = -20
n is the number of terms
Substituting the given values in the formula we have; an=100+(n-1)(-20)
⇒an=100+(-20n+20)
⇒an=100-20n+20
⇒an=120-20n
Therefore, the amount of money that remained from Takuya's presence during month n is expressed as an=120-20n and the sequence is an arithmetic sequence.
To learn more about an arithmetic sequence visit:
brainly.com/question/12108818.
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Answer: I did it on khan well, it is arithmetic sequence the answer is not right
The first answer is 100
The second answer is -20
I know no one reads the step by step explanation but what khan said is kinda un read able so I can’t do a step-by-step
x- y=-9
x+y=-5
Answers
Answer:
x=-7, y=2. (-7, 2).
Step-by-step explanation:
x-y=-9
x+y=-5
-----------
2x=-14
x=-14/2
x=-7
-7-y=-9
y=-7-(-9)
y=-7+9
y=2
2x-4≥6(x-1)
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Changing the English to math:
36 = 80% x n (n being the number)
36= .8n (changed the percent to a decimal by moving it back two places
36 = .8n
.8 .8 I divided both sides by .8 - when you divide a number by a decimal (less than one) the number will become larger.
The answer is 45