MATHEMATICS HIGH SCHOOL

To celebrate the first day of school, Reagan brought in a tray of caramel brownies and walnut brownies. The tray had a total of 20 brownies, of which 10% were caramel. How many caramel brownies did Reagan bring?

Answers

Answer 1

Answer:

18 I think

Step-by-step explanation:

Answer 2

Answer:

Answer:

Step-by-step explanation:

Reagan brought 2 caramel brownies.

Solve using a proportion.

$(?)/(20)$ = $(10)/(100)$

You're trying to find how many brownies he brought were caramel. We know Reagan brought a total of 20 brownies. Therefore since you don't know how many caramel brownies he brought, the fraction would be ?/20. Next, you know he brought brownies in which 10% were caramel. In proportions, the denominator would be 100% since that is the total percentage. Therefore, the proportion would be 10%/100%. Now we just have to cross multiply.

Proportion:

$(?)/(20)$ = $(10)/(100)$

10 x 20 = 200

200/100= 2

Thus, Reagan brought 2 caramel brownies.

Related Questions

What is ? + 38 = 60
Find the cost of 12 sweets if 2 sweets cost 5p
Please i need help ASAP!!! Extra points!!The cost of 3-D movie tickets is $12 for 1 ticket,$24 for 2 tickets, and $36 for 3 tickets. Determine whether the cost is proportional to the number of tickets by graphing on the coordinate plane.Explain your reasoning.
Which one of the following equations illustrates the commutative property?A) 8 + 3 = 4 + 7 B) If 3 + 5 = a, then a=3+5 C) 2 + b = b + 2 D) 3(2 + 5) = 6 + 15
Antoine went on vacation to Las Vegas. His room cost $115.62 each night. His flight there cost $45.70 and his flight home was $32.49. He averaged $15.00 per day on food. On the first day Antoine won $75.00 and on the last day he lost $25.00. If he stayed for 3 months and 4 days, how much did the entire trip (including airfare, food, hotel, and winnings) cost him?

How do you solve this problem using substitution and then check it?:y= -3x-2
2x+5y=16

Answers

You have to get a variable by itself like in here... Y is itself so in the other equation or we can say second one you just have to sub it in... Like

2x+5(-3x-2)=16
2x-15x-10=16
Now you just have to subtract 2 from 15, because of the same variable that is (x)
So -13x-10=16
Take 10 to the other side means add from the both sides, that will get you at
-13x=26
So now x= -2
Remember you added because it was -10 if it would be a positive 10 then you have to subtract it from both of the sides but since here it was negative so you just added them up
Hope i helped

We have the variable y so lets substitute
y=-3x-2
2x+5y=16

2x+5y=16
2x+5(-3x-2)=16
2x-15x-10=16
-13x=26
x=-2

y=-3x-2
=-3(-2)-2
=4

2x+5y=16
2(-2)+5(4)=16
-4+20=16
16=16

A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 140 lb and each box of books weighs 50 lb. The maximum capacity of the elevator is 830 lb. How many boxes of books can the delivery person bring up at one time?

Answers

We can model this with the following inequality

50x + 160 ≤ 1000 where x is the number of boxes....so, subtracting 160 from each side, we have

50x ≤ 840 divide both sides by 50

x ≤ 16.8 boxes ....but since he can't bring up partial boxes, round down to 16

What is the product of 6x – y and 2x – y + 2?A=8x2 – 4xy + 12x + y2 – 2y
B=12x2 – 8xy + 12x + y2 – 2y
C=8x2 + 4xy + 4x + y2 – 2y
D=12x2 + 8xy + 4x + y2 + 2y

Answers

Answer:

Option (B) is correct.

The product of 6x – y and 2x – y + 2 is $12x^2-8xy+12x+y^2-2y$

Step-by-step explanation:

Consider the given expressions 6x – y and 2x – y + 2

We have to find the product of the above two given expressions,

$(6x-y)(2x-y+2)$

multiply first term of first expression by each term of second expression and similarly second term of first expression by each term of second expression

$\Rightarrow 6x(2x-y+2)-y(2x-y+2)$