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ikadub [295]
2 years ago
8

Evaluate the expression. 4x−5 for x=10 Enter the correct answer in the box.

Mathematics
1 answer:
vampirchik [111]2 years ago
6 0

Step-by-step explanation:

<u>Substitute the given value of x into the expression;</u>

<u />4(10)-5

<u>Multiply;</u>

<u />40-5

<u>Subtract;</u>

<u />35

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Given: AACD is isosceles with angle D as the vertex angle. B is the midpoint of AC. AB= x + 5, BC= 2x - 3, and CD = 2x + 6. Find
Marina86 [1]

Answer:

  • 70 units

Step-by-step explanation:

<u>Given triangle ACD</u>

  • AB = BC
  • CD = 2x + 6
  • AB = x + 5
  • BC = 2x - 3
  • P = ?

<u>Perimeter is sum of the side lengths:</u>

  • P = AD + CD + AC

AD = CD because D is vertex and the triangle is isosceles

AC = AB + BC because B is midpoint of AC

<u>Then P is:</u>

  • P = 2(2x + 6) + (x + 5) + (2x -3) = 4x + 12 + x + 5 + 2x - 3 = 7x + 14

<u>Find the value of x from the AB = BC:</u>

  • x + 5 = 2x - 3
  • 2x - x = 5 + 3
  • x = 8

<u>Then find the value of P:</u>

  • P = 7*8 + 14 = 56 + 14 = 70 units

3 0
3 years ago
3.25, 3.0, 2.75, 2.5, 2.25, ...
Morgarella [4.7K]
3.25 - 3 = 0.25
3 - 2.75 = 0.25
2.75 - 2.5 = 0.25
2.5 - 2.25 = 0.25

Since we subtracted those numbers, it means we are decreasing.
Therefore, the answer is decrease by 0.25.
6 0
3 years ago
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Rudik [331]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Marta wants to go to college, but she's concerned about the cost. Which option would you recommend?
katrin [286]

Answer:

a

Step-by-step explanation:

i say a because she can attend a state college and after a year or so she can pay off the loan and go to university

4 0
3 years ago
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den301095 [7]

Answer:

(4,4)

Step-by-step explanation:

Starting at (4,-1)

Moving up means add 5 to the y value

(4, -1+5)

(4,4)

6 0
3 years ago
Read 2 more answers
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