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Bond [772]
3 years ago
15

Wh8ch equation represents a linear function: A, y=2x^+1 B, y^=3x+1 C, y=5x-1 D y=4x^^-1

Mathematics
1 answer:
Gemiola [76]3 years ago
4 0
C is your answer since it is the only one without any exponents
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Find the range of possible measures of x if each set of expressions represents measures of the sides of a triangle.
sergiy2304 [10]

Answer:

  • C. x > 3/2

Step-by-step explanation:

<u>According to the triangle inequality theorem, any side length is less than the sum of the other two:</u>

  • x < 2x + 1 + x + 4 ⇒ x < 3x + 5 ⇒ 2x > - 5 ⇒ x > - 2.5
  • 2x + 1 < x + x + 4 ⇒ 2x + 1 < 2x + 4 ⇒ 1 < 4, any value of x
  • x + 4 < x + 2x + 1 ⇒ x + 4 < 3x + 1 ⇒ 2x > 3 ⇒ x > 3/2

<u>Common solution of the three inequalities above is:</u>

  • x > 3/2

Correct choice is C

8 0
3 years ago
Express the area of the entire rectangle.
svet-max [94.6K]

Answer:

12n^4-15n^3-3n^2

Step-by-step explanation:

The first step is to distribute the 3n^2 to (4n^2-5n-1), like so:

(4n^2-5n-1)(3n^2)

12n^4-15n^3-3n^2

4 0
4 years ago
9.
musickatia [10]

Step-by-step explanation:

4x+3x=140

7x=140

x=140/7

x=20

4x=80

3x=60

6 0
3 years ago
Two cyclists, 40 miles apart, start riding toward each other at the same time. One cycles 3 times as fast
Dmitry [639]

Answer:

  15 mph

Step-by-step explanation:

The cyclists will cover distance at a rate proportional to their speed. So, the distance ratio is ...

  faster cyclist distance : slower cyclist distance = 3 : 1

Then the faster cyclist covers 3 : (3+1) = 3/4 of the total distance, or (3/4)(40 mi) = 30 mi.

That distance took 2 hours for the faster cyclist, so the speed was ...

  speed = distance/time = 30 mi/(2 h) = 15 mi/h

3 0
4 years ago
In an area of the Great Plains, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (b
solong [7]

According to me these are the values missing in the question. Here you go with the values

Rain fall, x 10.5 8.8 13.4 12.5 18.8 10.3 7.0 15.6 16.0

Wheat, y 50.5 46.2 58.8 59.0 82.4 49.2 31.9 76.0 78.8

Answer:

1.440

Step-by-step explanation

9(7187.77)-(112.9)(532.8)/square root 9 (1521.39)-112.92 square root 9 (33,836.58)-532.8*532.8=453.6/square root 9.46 square root 2.06 =0.962

--Equation found in part a

Answer: 11(7187.77)-(112.9)(532.8)/square root (1521.39-112.92*112.92 square root 11 (33,836.58532.8*532.8=189.1/square root 1.28 square root 1.82=1.440

7 0
4 years ago
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