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viktelen [127]
3 years ago
13

anne has 24 more cards than devi. anne finds that 3/5 of devi's cards are equal to 1/2 of her cards. how many cards does anne ha

ve?
Mathematics
2 answers:
DochEvi [55]3 years ago
4 0
If 1/2 of 24 are 3/5 of devi's cards, then 1/2(24)=3/5x, 12=0.6x, 20=x. Devi has 20 cards

laila [671]3 years ago
3 0
Ok so A(Anne) = D(Devi) + 24
and 1/2A = 3/5D
which is equal to A = 6/5D
which means that the 1/5 extra must = 24
so A = 6*24 
 A = 144
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Devon and his friends bought strawberry wafers for $3 per packet and chocolate wafers for $1 per packet at a carnival. They spen
Irina-Kira [14]
Hi there!

PART A:
The system of equations we would use would be:
x + y = 22 (amount of items)
3x + 1y = 30 (cost)

Variables:
x = the amount of strawberry wafers bought at the price of $3
y = the amount of chocolate wafers bought at the price of $1

PART B:
To solve, we'll use substitution because we can easily isolate a variable using the first equation.

Work:
x + y = 22 (first equation)
y = 22 - x (isolating a variable)
3x + 1y = 30 (second equation)
3x + (22 - x) = 30 (substituting into the second equation)
2x + 22 = 30 (simplifying)
2x = 8 (subtracting)
x = 4 strawberry wafers
4 + y = 22 (substituting x into the first equation to solve for y)
y = 18 chocolate wafers

ANSWER:
They bought 4 strawberry wafers and 18 chocolate wafers.

Hope this helps!! :)
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8 0
3 years ago
Lin has 13 coins in her pocket that equal 40 cents. All the coins are dimes, d, and pennies, p. Which combination of coins does
Luden [163]
To answer this question you should begin with the coin that has a higher value.  If you start with the dime and then just add the correct number of pennies to total $0.40, you will see that you will need 3 dimes ($0.30) and 10 pennies ($0.10).  

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7 0
3 years ago
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Dima020 [189]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
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Keith_Richards [23]

Answer:

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7 0
3 years ago
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Nina [5.8K]

Answer:

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Step-by-step explanation:

One endpoint of (4,-12), length of 5 units.

Four possible pairs:

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