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Dominik [7]
2 years ago
10

Let f be defined as shown. Which statement is true?

Mathematics
1 answer:
Marrrta [24]2 years ago
7 0

Answer:

The inverse of <em>f </em>exists

Step-by-step explanation:

Because <em>f  </em>is a function, then the function <em>f  </em>has an inverse

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What is the difference between 128.04 and 8.287?
Mandarinka [93]

Step-by-step explanation:

Simple

128.04 - 8.287

= 119.753

5 0
3 years ago
Find the area of the sector . Round to the nearest tenth
Eva8 [605]

Answer:

maybe its 30688399329932080?

Step-by-step explanation:

6 0
3 years ago
One leg of a right triangle is 7 inches longer than the other leg, and the hypotenuse is 35 inches. Find the lengths of the legs
lilavasa [31]

Answer: 21, 28

Step-by-step explanation:

  • Side #1 = x
  • Side #2 = x + 7
  • Hypotenuse = 35

Use the Pythagorean Theorem a^{2}+b^{2}=c^{2}:

  • a = x
  • b = x + 7
  • c = 35

Substitute in the values & solve:

x^{2}+(x+7)^{2}=35^{2}\\x^{2}+x^{2}+14x+49=1225\\2x^{2}+14x+49-1225=0\\2x^{2}+14x-1176=0\\2(x^{2}+7x-588)=0\\2(x + 28)(x - 21)=0\\x_{1}=-28, x_{2}=21

<em><u>-28 is not a possible solution since you can't have negative inches...</u></em>

  • a = x = 21
  • b = x + 7 = 21 + 7 = 28
  • c = 35
6 0
3 years ago
A mountain trail will cover 4,855 feet vertically over a horizontal distance of 17,625 feet.
Oduvanchick [21]
Hbbnbnnnbbbbbbbbbghnmmjgvbmjuj,
5 0
3 years ago
a metal worker has a metal alloy that is 20% copper, and another metal alloy that is 60% copper. How many kilograms (kg) of each
emmainna [20.7K]

Let X = the 29% alloy and Y = the 60% alloy.

They want a total of 80kg, so you have X +Y = 80

Rewrite that to get X = 80-Y


You also want 0.20X + 0.60Y = 0.52(80)

Replace X with 80-y:

0.20(80-y) + 0.60y = 0.52(80)

Simplify:

16 - 0.20y + 0.60y = 41.6

Combine like terms:

16 +0.40y = 41.6

Subtract 16 from each side:

0.40y = 25.6

Divide both sides by 0.40

y = 25.6 / 0.40

y = 64


Now you have Y replace y with 80 in X = 80-Y

X = 80 - 64

X = 16

They need 64 Kg of the 60% alloy and 16 Kg of the 20% alloy.


5 0
3 years ago
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