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3 years ago

12

On Sunday, Sam walked to the hardware store and decided to buy a saw for $12.53 . Sam handed the salesperson $12.88 for his purc

hase. How much change did Sam receive?

2 answers:

satela [25.4K]3 years ago

8 0

Answer:

i need this too so any body that knows it plz help

Korolek [52]3 years ago

6 0

i am not that good at math but this is the answer i got that changed

12.36 i really really hope it helped ;) have a nice day

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WITCHER [35]

On which one,all of them?

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3 years ago

Sam and Mary collect marbles. “If you give me 5 marbles I’ll have twice as many as you.” said Sam to Mary.

ivann1987 [24]

Answer:

54 marbles

Step-by-step explanation:

The question is a word problem leading to a simultaneous equation

Let 'x' represent the initial number of marbles with Sam, and let 'y' represent the initial number of marbles with Mary,

If Mary gives Sam 5 marbles, we have;

x + 5 = 2 × (y - 5)...(1)

If Sam gives Mary 4 marbles, we get;

x - 4 = y + 4...(2)

From equation (1), we get;

x + 5 = 2 × (y - 5) = 2·y - 10

x = 2·y - 10 - 5 = 2·y - 15

x = 2·y - 15...(3)

From equation (2), we have;

x - 4 = y + 4

∴ x = y + 4 + 4 = y + 8

x = y + 8...(4)

Equating the two values of 'x' in equation (3), and equation (4), we get;

2·y - 15 = y + 8

2·y - y = 8 + 15 = 23

∴ y = 23

From equation (4), we get;

x = y + 8 = 23 + 8 = 31

x = 31

The total number of marbles they have altogether = x + y

However, x + y = 23 + 31 = 54

Therefore;

The total number of marbles they have altogether = 54 marbles.

7 0

3 years ago

What is the solution to the equation 3 over 1⁄2 plus P. equals 5 over 1⁄4

Firdavs [7]

Answer:

C hdgkddjgxjvvnCbbcBcgsjgzjvzjvhfhfh

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3 years ago

Find the product. <br> (2xyz) (-4x2yz)<br><br> PLEASE HELP!!! ASAP!!!

melamori03 [73]

Answer:

$-16x^{2} y^{2}z^{2}$

Step-by-step explanation:

Let's calculate the answer to the second parenthesis. Just multiply throughout to get -8xyz. Then, multiply the first parenthesis by the second. Multiply the constants (-8 and 2) first to get -16, multiply the x's together to get x^2, the y's together to get y^2, and the z's together to get z^2. Put it all together to get $-16x^{2} y^{2}z^{2}$ .

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4 years ago

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tester [92]

It has to be A I’m sorry if I’m wrong

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3 years ago

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