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Kamila [148]
3 years ago
14

Please Help!!

Mathematics
2 answers:
tatyana61 [14]3 years ago
4 0
<span>f(x) = 5(1/5)-x
f(x) = 5(5)x</span>
strojnjashka [21]3 years ago
4 0

The answers are D. and E.

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Which statement explains why the value of [2.4] is 2 but the value of [-2.4] is –3?
GenaCL600 [577]
For any x in Real numbers, [x] is the greatest possible integer smaller than x, or equal to x if x is an integer.

According to this,

<span>[2.4] is the greatest integer , smaller than or equal to (so non greater) 2.4. This number is 2

similarly,  </span>[-2.4] is the greatest integer , smaller than or equal to (so non greater) -2.4. This number is -3.


Answer: 

A) <span>Because 2 is the greatest integer not greater than 2.4 and –3 is the greatest integer not greater than –2.4. </span>
3 0
3 years ago
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12. The temperature was –3° C last night. It is now 4° C. What was the<br> change in temperature?
aniked [119]

Answer:

7

Step-by-step explanation:

-3 + 3 = 0

0 + 4 = 4

4 + 3 = 7

6 0
3 years ago
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Is -10.5 a rational number?
sladkih [1.3K]
Yes it is a rational number it can be expressed as a fraction
5 0
3 years ago
What is the perimeter and area of the photo below? And please show me how you did it. I need it for a school math group, and I’m
adoni [48]

Answer:

Assuming the area is made up of a square and a semicircle.

<u>Perimeter</u>

The side length of the square = 18 ft

We can see 3 full side lengths plus one side length from which we need to subtract 12 ft (see attached diagram).

⇒ perimeter of the square = (3 x 18) + (18 - 12)

                                                          = 54 + 6

                                                          = 60 ft

Circumference of a circle = \pid (where d is the diameter)

⇒ arc length of the semicircle = 1/2 circumference

                                                  = 1/2 · \pi · 12

                                                  = 6\pi ft

Total perimeter = 60 + 6\pi = 78.8 ft (nearest tenth)

<u>Area</u>

Area of a square = s² (where s is the side length)

⇒ area of square = 18²

                             = 324 ft²

Diameter = 2r  ⇒  r = 1/2 diameter

Area of a circle = \pir²  (where r is the radius)

⇒ area of the semicircle = 1/2 · \pi · 6²

                                         = 18\pi ft²

Total area = 324 + 18\pi = 380.5 ft² (nearest tenth)

6 0
2 years ago
Use the quadratic formula to solve the equation. Round to the nearest hundredth if needed.
klasskru [66]
The answer is above.

8 0
3 years ago
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