MATHEMATICS MIDDLE SCHOOL

Please I need help fastWhich inequality best models the situation if variable w is the weight of dogs that would be allowed?

An apartment complex allows small dogs that weigh less than 20 pounds. Show the possible weights of dogs that would be allowed.

A.
w < 20 and w must be a positive number.

B.
w < 20 and w may be a negative number.

C.
w > 20 and w must be a positive number.

D.
w > 20 and w may be a negative number.

Answers

Answer 1
Answer: since it is "less than," the inequality sign will be "<"

since a dog has to weigh something, and its weight cannot be negative, "w" will have to be a positive number

the correct answer is A

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F(x)= squareroot of x between x=1 and x=9
Write an expression that is equivalent to three over five (3y + 15).
A 120 watt light bulb uses about 0.1 kilowatt of electricity per hour.if electricity costs $0.20 per kilowatt hour how much does it cost to have a bulb on for an hour?

Given the arithmetic sequence an = −4 + 4(n − 1), what is the domain for n? (1 point)

Answers

Answer:

The correct answer is C. All integers where n ≥ 1

Final answer:

The domain for n in the given arithmetic sequence is the set of positive integers.

Explanation:

The domain of the arithmetic sequence an = −4 + 4(n − 1) is the set of all possible values for n. In this case, since n represents the position in the sequence, it can only take on positive integer values starting from 1. Therefore, the domain for n is the set of all positive integers: {1, 2, 3, 4, ...}.

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Can u help with this one u know who u are

Answers

It's the one on the top righr, -2/9 w + 2/15.
1/3(2/5-2/3w)

1/3*2/5-1/3*2/3w

2/15-2/6w

2/15-1/3w

Final Answer: 2/15-1/3w

Write the fractions in order from least to greatest 1/5, 2/3, 5/8

Answers

1/5, 5/8, 2/3     from least to greatest.

1/5 = 0.20   x 100% = 20%
5/8 = 0.625 x 100% = 62.50%
2/3 = 0.667 x 100% = 66.70%

It is easier to convert dissimilar fractions into decimals to know which fraction has greater or lesser value compared to the other fractions.

Final answer:

To order the fractions from least to greatest, convert them to decimals, compare, and then convert back to fractions. The order is 1/5, 5/8, 2/3.

Explanation:

To order the fractions from least to greatest, it's easiest if they all have the same denominator. In this case, the fractions are 1/5, 2/3, and 5/8. An approach can be to convert them all to decimals to make comparison easier.

Here's how you do it:

  1. Convert each fraction to a decimal: 1/5 = 0.2, 2/3 = ~0.67, 5/8 = 0.625
  2. Look at each decimal to determine their order from least to greatest: 0.2, 0.625, 0.67
  3. Convert the decimals back to fractions: 1/5, 5/8, 2/3

So, the fractions from least to greatest are: 1/5, 5/8, 2/3.

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How do you solve an equation with Fractions?Ex. 1/2(7x + 48)
Ex. -(1/2 x -3)+4(x + 5)

Answers

Its best to turn fractions into decimals so its easier to solve the problem, in order to do this you would divide the number on the top to the number on the bottom. Ex: 1 divide by 2 So the numerator divided by the denominator. The top of the faction is the numerator and the bottom of the faction is the denominator. So 1 divided by 2 = 0.5 you would replace 0.5 for the 1/2.









if the length of a radius of a circle is doubled how does that affect the circumference and area explain

Answers

If the length of the radius in a circle is increased (or in this case, doubled) the circumference changes along with it. Because, remember; radius is half of circumference, so if the radius changes it only makes sense for the or circumference to change as well. To find the area of the circle you need the circumference, and if the radius has been changed, so will the circumference, and if the circumference has changed, so will the area. Get it? Hope I helped

Sophia exchanged 1000 U.S. dollars for the South African currency, which is called the rand. The exchange rate was 7.15 rand to $1. How many south african rand did sophia get? please explain how you know.Part B
Sophia spent 6,274 rand on her trip. The exchange rate was 1 rand to $0.14. How many US dollars did Sophia get? please support your answer.
thank you so much!!!

Answers

Part a:-

7.15 rands = 1 dollar

So we are going to MULTIPLY to find out how many rands there are going to be.

1000 × 7.15 = 7150

So, 7150 rands is your answer. 

Part b:-

To do this first we will DIVIDE. 

6274 ÷ 7.15 ≈ 877.482.......

So, 6274 rands is ABOUT $878.

Par a:- 7150 rands

Part b:- about $878.

Hope I helped ya!!!!!
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