MATHEMATICS MIDDLE SCHOOL

Try to find the answer to the following inequality.
+4n-1<+6n+9-8n+15
what is n?

Answers

Answer 1
Answer: It’s 8 cuz u switch them

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10 POINTS! Please help me on the attached file!

Answers

Your answer is correct because 4.2 is half of 8.4 so 4.6 is double of 2.3.
the answer is 4.6, the scale factor for the figure is 2. 2.3 times 2 is 4.6

The perimeter of a rectangle is 222 millimeters.If the length of the rectangle 60 millimeters,what is the width of the rectangle?

Answers

W = (2)/(222-(60 x 2))
W = (2)/(222-120)
W = (2)/(102)
W = 51

Four congruent isosceles right triangles are cut from the 4 corners of a square with a side of 20 units. The length of one leg of the triangles is equal to 4 units. What is the area of the remaining octagon?

Answers

Answer:

368 sq. units.

Step-by-step explanation:

We have a square of side lengths 20 units and we cut four congruent isosceles right triangles from the corners of the square.

Now, the four isosceles right triangles have one leg equal to 4 units.  

Therefore, the area of four triangles = 4 * ( (1)/(2) * 4 * 4) = 32 sq. units.

Now, we have the area of the given square is (20 × 20) = 400 sq. units.

Therefore, the area of the remaining octagon will be (400 - 32) = 368 sq. units. (Answer)

Number 1 I need help with confused

Answers

So these are set up into groups. you have 4 groups. you want to find 1/4 of the group and that would be 3 squares because 4 times 3 = 12
It would be 3\4 because 1/4 x 12 (or12/1)=3/4.

Ralph is buying a lunch special for $6.50 which includes a sandwich, chips, 1pand a soft drink. If he want a dessert which costs $3.50. What would his
total cost be if he buys dessert? *​

Answers

Add the two prices together:

6.50 + 3.50 = 10.00

Total price for both is $10.00

18\126 turned into a percent

Answers

Hi there! To turn a fraction like 18/126 as a percent we divide the numerator by the denominator and then you multiply by 100. In this case, we have a numerator of 18 and a denominator of 126. 18/126=0.1428*100=14.2857%, if you want to round it the percent would be 14.30%
To turtn this question into a percent, we first need to reduce the fraction.
To reduce a fraction, you need to find a number that the numerator and the denominator can both divide into.

18 can be divided by 2.

126 can be divided by 2.

These numbers are both able to be divided 2.

So, now once I do 18/2 and 126/2, the fraction changes into:

(9)/(63)

Now that the fraction is (9)/(63), it can no longer be reduced, we turn it into a fraction. 

9/63 =  0.142857

Or 14%.

So your answer is 14 percent, rounded.
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Help!!!!! I need help fast.