Which rectangle has a perimeter of 16 unit

Answers

Answer 1

Answer: 5 units a the length and 3 units as the height.

Answer 2

Answer: Length 5 units,Width 3 units
p=2(L+W)
p=2(5+3)
p=10+6
p=16 units

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A chemist is using 351 milliliters of a solution of acid and water. If 19.7 % of the solution is acid, how many milliliters of acid are there? Round your answer to the nearest tenth.

Answers

There is 69.147 ML of acid

since we round to the nearest tenth it is 69.1 ML of acid

Tell whether x and y show direct variation.
xy=5

Answers

Form of direct variation looks like y = kx, where k is any constant number (2, 3/4, 1/3, etc)

So here you have xy = 5.

Divide both sides by x, and you have y = 5/x.

So it is not direct variable, it is inverse variation.

direct variation is when a=x/y a stays constant so when x goes up, then y also goes up so lets say a=2 then 2=x/y so if x is 2 then y=1 if x is 4 then y=2

indirect variation is a=xy where when x goes down y goes up so less say a=2 then if x=2 then y=1 if x=1 then y=2

for number 9. it shows direct variation because when x goes up, y also must go up

Three friends meals at a restaurant cost is 13,14,and 11 dollars. Use parentheses to write two different expressions to show how much the friends spent in all which property does your pair of expressions demonstrate?

Answers

(13+14)+11= 13+(14+11)
Associative property of addition

Final answer:

The expressions (13 + 14) + 11 and 13 + (14 + 11) both demonstrate the associative property of addition. Regardless of how the meals are grouped in the parentheses, the total cost of the meals remains the same at $38.

Explanation:

The question is asking you to create mathematical expressions using parentheses to show the combined cost of three friends' restaurant meals, whose prices are $13, $14, and $11. We can do this by using the associative property of addition, which states that the way in which numbers are grouped when being added does not change the sum.

The first expression could be (13 + 14) + 11, where the meals costing $13 and $14 are grouped together first. The sum of these two meals is $27, so if we then add the $11 meal, we get a total of $38.

The second expression could be 13 + (14 + 11), where the meals costing $14 and $11 are grouped together first. The sum of these two meals is $25, so if we add the $13 meal, we still get a total of $38.

This shows the associative property of addition because regardless of how the meals are grouped in the parentheses, the total cost remains the same.

Learn more about Associative Property here:

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What is the distance from
23, 5) to (33, -12)

Answers

Answer: 19.723083

Step-by-step explanation:

The answer is 19.7 for sure

Evaluate each function rule. Find y for x=0, 1, 2, and 3. Construct a function table for each problem.y=3x+1

Answers

sub x values for x
0,1,2
y=3(0)+1=1
y=3(1)+1=4
y=3(2)+1=7
y=3(3)+1=10

table

x=0,1,2,3
y=1,4,7,10

18x + 9y use the distributive property to write an equivalent expression

Answers

Hey there!
It looks like you have another factoring question!
Using our definition of the distributive property:
a(b+c) = ab+ac
We need to factor our or greatest common multiple, which here is 9.
9 times 2x = 18x and 9 times y = 9y
We have:
9(2x + y)
Once again, using the distributive property, multiply it out and you'll get 18x and 9y.
Hope this helps!

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