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lisov135 [29]
3 years ago
8

Which equation is true for the value x = 15?

Mathematics
1 answer:
boyakko [2]3 years ago
4 0
The third one because 2(15+5)=2(20)=40
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Why is -2x -8 an algebraic expression
Montano1993 [528]
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so then 1/2 x=8 and that is algebraic
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Five less than half the distance from Delaney’s home to the mall is more than 6 miles.
vovikov84 [41]

let x = the distance from Delany's house to the mall

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then it is 5 miles less than that so you would subtract 5 to give you 1/2x-5

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8 0
3 years ago
The hypotenuse AB of the right triangle ABC is parallel to the axis of the abscess. Find the length of the hypotenuse if A (-1;
lukranit [14]

Answer:

  10.25

Step-by-step explanation:

The slope of AC is given by the slope formula:

  m = (y2 -y1)/(x2 -x1)

  m = (-4 -1)/(3 -(-1)) = -5/4

Then the slope of CB is the opposite reciprocal, 4/5. The equation of line CB in point-slope form is ...

  y -k = m(x -h) . . . . . . line with slope m through point (h, k)

  y -(-4) = 4/5(x -3) . . . . line CB

When y = 1 (to match the y-value of A), then ...

  1 +4 = 4/5(x -3)

  5(5/4) = (x -3) . . . . . multiply by 5/4

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Point B is (9.25, 1).

The length of the hypotenuse is ...

  9.25 -(-1) = 10.25

6 0
2 years ago
Which expression is equivalent to 4x + 3 - 2x + 5.
My name is Ann [436]

2x+8 is equivalent to 4x+3-2x+5

Step-by-step explanation:

4x+3-2x+5

4x+2x+3+5

2x+8

7 0
3 years ago
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