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erastova [34]
3 years ago
13

Solve for b. 63 = 9b+ 54

Mathematics
2 answers:
kari74 [83]3 years ago
5 0

Answer:

b=1

Step-by-step explanation:

63-54=9b

(63-54)/9=b

tiny-mole [99]3 years ago
4 0

Answer:

1

Step-by-step explanation:

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How many solutions does 9(z+8)=-9z-72 have
zloy xaker [14]

Answer:

1 solution.

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

9(z + 8) = -9z - 72

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Distribute 9:                              9x + 72 = -9z - 72
  2. Add 9z to both sides:               18z + 72 = -72
  3. Subtract 72 on both sides:       18z = -144
  4. Divide 18 on both sides:           z = -8

Here we see that we will get only 1 solution for <em>z</em>.

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2 years ago
The weight, w, of a spring in pounds is given by 0.9 times the square root of the energy, E, stored by the spring in joules. If
alex41 [277]

Answer:

B) w\approx3.12 pounds

Step-by-step explanation:

w=0.9\sqrt{E}

w=0.9\sqrt{12}

w\approx3.12

6 0
2 years ago
P = 2L + 2W<br>How Do I Find W?
tatyana61 [14]
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3 0
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200 meters
Katyanochek1 [597]

Answer:

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Step-by-step explanation:

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200 + 60 + 60 + 200 = 520 m

7 0
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I hope that helped
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