MATHEMATICS MIDDLE SCHOOL

The NYC Parks Department is designing a rectangular athletic field for a new park in Brooklyn. The width of the field needs to be 10 feet shorter than the length, and the perimeter of the field needs to be 80 feet. What is the length of the new field?

Answers

Answer 1

Answer:

Length = 25feets

Step-by-step explanation:

Let the length l = x

Width w = x - 10

Perimeter = 80

And Perimeter = 2(l + w)

:- 80 = 2{x + (x - 10)}

80 = 2{x + x - 10}

80 = 2(2x - 10)

80 = 4x - 20

4x = 80 + 20

4x = 100

x = 100/4

x = 25ft

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Help please. will give brainliest

Answers

Answer:

Step-by-step explanation:

If the average of x and y is 12

(x+y)/2 =12

x+y = 2*12

x+y =24

We want the average of x+y+z

(x+y+z)/3 =

We know x+y =24 and z =6

(24+6)/3

30/3

Answer:

Step-by-step explanation:

We know that the average of two numbers are the numbers divided by 2, right?

So the equation would be this

X + Y/2 = 12

x + y = 24, since 24 divided by 2 is 12.

You should add x (6) to 24 and wind up with 30

Now to get the average between those 3, divide by 30 by 3

you should get 10

Thank me later :)

(or just give brainliest)

A divers final score 77.7 what is the degree of difficulty of the dive

Answers

the answer is 3.5
I did this in class today! haha

Sarah gave the same answer when asked to round 4 7/8 to the nearest inch and half a inch. Explain why Sarah is correct.

Answers

when you take 4 7/8 and round it up to the next inch u round up because 7/8 is bigger than 1/2 so thats 5
u would round it up to 5 again for the nearest half inch because 7/8 is closer to 1 than 1/2 which brings it to 5

Y = 5x^2 + 7
linear or nonlinear

Answers

the squared term, 5x, represents a quadratic equation, which is **nonlinear**

3x+5=245

Helpppppppppppp

Answers

Answer:

X = 80

Step-by-step explanation:

Subtract "5" from both sides,

3x + 5 - 5 = 245 - 5

Simplify,

3x = 240

Divide both sides by "3",

3x/3 = 240/3

X = 80

Hope this helps :-)

3x + 5 = 245
Subtract 5 from both sides to get x alone on one side
3x = 246
Now divide by 3 on both sides
x = 82

Selim puts 1 star sticker on each baseball card of his favorite players. The stickers come 9 to a sheet. Selim has 30 favorite players. How many sheets of stickers does he need to get?

Answers

4 sheets
Explanation
30 divided by 9 gives you 3.333333
But you can’t have 3 1/3 of a sticker sheet so you round up to 4 sheets

4 sheets because you are not gonna get 3.333 so you have to bring 4

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