Sam lives 3.5 times farther from school than Sara does. Sam lives 13.3 miles from school. How far from school does Sara live?

Answers

Answer 1

Answer: Let distance of Sarah from school = x
Distance of sam from school = 3.5x or 13.3

=> 3.5x = 13.3
X = 13.3/ 3.5
X = 3.8

Answer 2

Answer:

Answer:

Sara lives 3.8 miles away from the school

Explanation:

Sam lives 3.5 times farther than Sara

Sam lives 13.3 miles away from school

Opposite of multiplication is division, so we must divide to see how far away Sara lives from the school

13.3 ÷ 3.5 = 3.8

Sara lives 3.8 miles away from the school

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Brand W: 500 napkins for $2.87Brand X: 200 napkins for $1.27
Brand Y: 100 napkins for $0.62
Brand Z: 250 napkins for $1.37

Which brand is the cheapest? What is the cost of one napkin of this brand?

Which brand is the most expensive? What is the cost of one napkin of this brand?

Answers

The best way, in my opinion, to do this, is to find the unit rate of each napkin brand, or the cost per napkin. To do this, divide the money amount by the amount of napkin they give you.

/Brand W:2.87/500=.00574 \
\Brand X: 1.27/200=.00635   \ These are the
/Brand Y: .62/100 =.0062   / cost per napkin.
  \Brand Z: 1.37/250=.00548 /

Which one out of these 4 values is the lowest value? Obviously the two with the 6 in the thousandths place are more expensive than the ones with the 5s in the thousandths place, so that already eliminates Brand Z and Brand W.

What do we have left?

Brand X: 1.27/200=.00635
Brand Y: .62/100 =.0062
Cool. Which of these is a smaller number? Tip: If the first number besides 0 is the same, check the next one! You should get that Brand Y is the cheapest! :) Hoped this helped!

X-2y=4. -3x+5y=-3. solving linear systems using multiplication and addition show your work

Answers

-3x+5y=-3
3x -6y= 12
Multiplied the first equation by 3 so the x's will cancel.
Adding the two equations we get
-y=9
y=-9
Now plug y back in to either equation and solve for x. x-2(-9)=4
x+18=4
x=-14
(-14,-9)

Write each number in expanded form 670,200,640

Answers

600000000
70000000
200000
600
40

What does k equal in kx+2y=k; if (2,-2)

Answers

k(2)+2(-2)=k
2k-4=k
+4 +4
2k=k+4
-k -k
K=4

Simplify both sides of the equation

k(2)+(2)(-2) = k

Simplify

2k-4 = k

Subtract k from both sides

2k-4-k = k-k

k-4 = 0

Add 4 to both sides

k-4+4 = 0+4

k = 4

I hope that's help !

3 trays 18 shaded would the greater number be 18/3

Answers

It all depends on what the real question is.. What is the question asking you?? Is it asking you what the shaded number is all together??

Write words to match the expression 3 + (4x12)

Answers

Answer:

The sum of three and the product of four and twelve.

Step-by-step explanation:

In the expression we have sum, product and parenthesis. We can write it as:

The sum of three and the product of four and twelve.

Suppose Adam bought a crate of soft drinks cans which had 4 rows and 12 columns. His master gave him 3 more cans. How many cans does Adam have now?

You solve it:

3+(4*12)

Solve the bracket first.

3+(48)

3+48 = 51 cans....

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