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mote1985 [20]
3 years ago
8

Please help me of this !! :))

Mathematics
1 answer:
cricket20 [7]3 years ago
3 0

Answer: b

Step-by-step explanation:

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A field has a length of 260 meters and a width of 500 meters. Part of the field, 50 meters by 200 meters, is paved for a parking
uysha [10]

Answer: 120,000 meters²

Step-by-step explanation:

First find the area of all the land both paved and unpaved:

= Length * Width

= 260 * 500

= 130,000 meters²

The find the area paved:

= 50 * 200

= 10,000 meters²

The area left unpaved:

= Total area - Paved area

= 130,000 - 10,000

= 120,000 meters²

7 0
3 years ago
Classify each of the power functions based on their end behavior (increasing or decreasing) as x = ∞
Svetlanka [38]

Answer: right side behavior:

              f(x) is Decreasing

             g(x) is Increasing

             h(x) is Increasing

             j(x) is Decreasing

<u>Step-by-step explanation:</u>

The rules for end behavior are based on 2 criteria: Sign of leading coefficient and Degree of polynomial

<u>Sign of leading coefficient</u> (term with greatest exponent):

  • If sign is positive, then right side is increasing
  • If sign is negative, then right side is decreasing

<u>Degree of polynomial</u> (greatest exponent of polynomial:

  • If even, then end behavior is the same from the left and right
  • If odd, then end behavior is opposite from the left and right

f(x) = -2x²

  • Sign is negative so right side is decreasing
  • Degree is even so left side is the same as the right side (decreasing)

as x → +∞, f(x) → +∞  Decreasing

as x → -∞, f(x) → -∞   Decreasing

g(x) = (x + 2)³

  • Sign is positive so right side is increasing
  • Degree is odd so left side is opposite of the right side (decreasing)

as x → +∞, f(x) → +∞  Increasing

as x → -∞, f(x) → -∞   Decreasing

h(x)=-1+x^{\frac{1}{2}}\implies h(x)=x^{\frac{1}{2}}-1  

  • Sign is positive so right side is increasing
  • Degree is an even <u>fraction</u> so left side is opposite of the right side as it approaches the y-intercept (-1)

as x → +∞, f(x) → +∞  Increasing

as x → -∞, f(x) → -1    Decreasing to -1

j(x)=\dfrac{1}{2}(-x)^5\implies j(x)=\dfrac{1}{2}(-1)^5(x)^5\implies j(x)=-\dfrac{1}{2}x^5

  • Sign is negative so right side is decreasing
  • Degree is odd so left side is opposite of the right side (increasing)

as x → +∞, f(x) → +∞  Decreasing

as x → -∞, f(x) → -∞   Increasing

6 0
4 years ago
Tom simplified an expression in three steps, as shown: x to the power of negative 2 multiplied by y to the power of 4, over y mu
ss7ja [257]

Answer:

  • Step 1, all the exponents are increased by 4

Step-by-step explanation:

<u>The three steps are</u>

  1. (x⁻² × y⁴ /y × x⁴ × x⁴ × y⁻²)⁴ =  
  2. x²×y⁸/y⁴×x⁸×x⁸×y² =
  3. x²×y⁸/y⁶×x¹⁶

<u>Correct solution should be:</u>

  • (x⁻² × y⁴ /y × x⁴ × x⁴ × y⁻²)⁴ =  all powers inside the parenthesis should be multiplied by 4 as per power of the power  (xᵃ)ᵇ = xᵃᵇ

<u>This would give next steps:</u>

  1. x⁻⁸×y¹⁶/y⁴×x⁸×x⁸×y⁻⁸ =
  2. x⁻⁸×y¹⁶/x¹⁶×y⁻⁴ =
  3. y²⁰/x²⁴

<u>Answer options:</u>

Step 1, all the exponents are increased by 4

  • There should be multiplication of powers. (It is close option but is not fully correct as not all the exponents increased by 4, for example y became y⁴)

Step 2, the exponents of the same base are added during multiplication

  • It was done correctly

Step 3 wasn't performed yet, there was step 1 and 2.

  • So answers about step 3 are irrelevant
5 0
3 years ago
Please answer. Brainliest and alot of points.
Novosadov [1.4K]

Answer:

Area is 582 feet squared

Step-by-step explanation:

So, it suggests you break the shape apart, which is exactly what we can do to solve this problem.

We know that the longest side is 38ft, but to find the remaining length of the top, we will subtract 21 from 38.

So: 38ft - 21ft = 17ft

Now we can break the shape. The square will be 21 by 18 ft, and the remaining rectangle shape will be 12 by 17ft.

For the area, we'll start with the square. The formula for area is length times width: A=LW

For the square, we have the length, 21, and the width 18ft. All we have to do is multiply them:

21 * 18 = 378ft. squared

Now we can move on the rectangle, which has a length of 17ft, and width of 12ft.

12 * 17 = 204ft. squared

Last step! We add our areas together to get the entire shape's area. So..

378ft. + 204ft. = 582ft. squared

Good luck :P

8 0
4 years ago
Read 2 more answers
25 points.<br> View attachment below.
Veseljchak [2.6K]

Answer:

d

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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