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vovangra [49]
3 years ago
13

25 points!!!!!!!!!!!!!!!!!!1 help assap

Mathematics
1 answer:
Kipish [7]3 years ago
4 0

Answer:

i thinks the answer is the fourth, which an= 3-2(n-1)

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I NEED HELPPPPPPPPPPPPPP ITS TIMED PLEASSE HURRY AND I WILL GIVE BRAINLIESTTTTT
luda_lava [24]

Answer:

4c + 6a < = 120 ...4(20) + 6(6) = 116 <== correct

4c + 4a < = 100....4(20) + 4(6) = 104 <== incorrect

first answer choice

5 0
2 years ago
Read 2 more answers
If the pitcher throws the ball at 60 mi/h, how long does it take the ball to reach home plate?
Likurg_2 [28]
It will take more than 60 miles depending on how long the home plate is
6 0
3 years ago
To subtract two rational expressions that have a common denominator, you simply _____ the numerators.
Gala2k [10]
The answer is subtract.

For example:

\frac{3x^2 - 3}{x+2} - \frac{x^2+6}{x+2}

\frac{3x^2 - 3-x^2-6}{x+2}

\frac{2x^2-9}{x+2}
4 0
3 years ago
What does the algebraic representation (x,y) → (-x, y) represent?
torisob [31]

Answer:

The given algebraic representation (x,y) → (-x, y) represents the reflection of a point (x, y) across the y-axis.

Step-by-step explanation:

We know that when a point P(x, y) is reflected across the y-axis, the x-coordinate changes/reverses its sign, but the y-coordinate stays the same.

Thus, the rule of reflection of a point P(x, y) across y-xis is:

P(x, y) → P'(-x, y)

For example, if a point A(1, 2) is reflected across the y-axis, the coordinates of the image A' of the point A(1, 2) will be:

A(1, 2)  → A'(-1, y)

In our case, we are given the  algebraic representation

(x,y) → (-x, y)

Here:

  • The x-coordinate changes/reverses its sign
  • The y-coordinate stays the same.

Thus, the given algebraic representation (x,y) → (-x, y) represents the reflection of a point (x, y) across the y-axis.

6 0
2 years ago
Please help me
hoa [83]

Answer:

  D.  A triangle with angles measuring 75°, 60°, and 45°​

Step-by-step explanation:

Given various triangle descriptions, you want to know which one describes more than one triangle.

<h3>Triangle relations</h3>

The angles and sides of a triangle satisfy a few different relations:

  • angle sum — the sum of angles is 180°
  • triangle inequality — the sum of the two short sides exceeds the long side
  • law of cosines — c² = a² +b² -2ab·cos(C)
  • law of sines — a/sin(A) = b/sin(B) = c/sin(C)

<h3>Application</h3>

A. Two sides and the included angle can be used with the Law of Cosines to find the length of the third side. That is, a single triangle is created by these measurements.

B. Sides measuring 4, 8, and 15 do not satisfy the triangle inequality, so no triangle is created by these measurements.

C. Sides measuring 6, 8, and 10 satisfy the triangle inequality, so will create a single triangle. (That triangle is a right triangle.)

D. The given angles total 180°, so could be the angle measures of any number of triangles. At least one side length must be specified in order to completely define a single triangle. These measures create more than one triangle.

7 0
1 year ago
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