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PilotLPTM [1.2K]
3 years ago
10

I know the answer already but can someone explain it please 2187= 3^x Answer is x=7

Mathematics
1 answer:
natima [27]3 years ago
6 0

Answer:

3^x = 2187 is equivalent to log 3 (2187) = x.  (the three is the small number that goes lower next to the g). Then, use a calculator to do log(2187) / log(3)

Step-by-step explanation:

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Solve for u. 31.25 = u/5
ipn [44]

Answer:

u = 156.25

Step-by-step explanation:

Step 1: Write equation

31.25 = u/5

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

  1. Multiply both sides by 5: 156.25 = u
  2. Rewrite: u = 156.25

Step 3: Check

<em>Plug in u to verify it's a solution.</em>

31.25 = 156.25/5

31.25 = 31.25

3 0
3 years ago
Read 2 more answers
SELECT ALL the expressions that are equivalent to -2(4 - 3x) + (5x - 2)
erma4kov [3.2K]

Answer:

Option B, c and e are the correct

7 0
3 years ago
Mr. Stein is purchasing a 2.25 pounds of meat that cost $2.80 per pound. How much will he receive if he pays the cashier $20.00
antoniya [11.8K]
He will receive $13.70.

You would have to multiply 2.25 by 2.80 to get 6.30, which is the total cost due. Subtract 6.30 from 20 to get your answer, 13.70, or the change Mr. Stein will receive.
4 0
4 years ago
What is the m∠ABC?<br><br> 1)m∠ABC = 60°<br> 2)m∠ABC = 67°<br> 3)m∠ABC = 120°<br> 4)m∠ABC = 127°
docker41 [41]

we are given

m∠BCD =67

and  m∠BDC=60

we know that

m∠ABC is exterior angle

m∠BCD  and  m∠BDC are interior angles

exterior angle is sum of interior angles

so, we can write it as

m∠ABC=m∠BCD+m∠BDC

now, we can plug values

and we get

m∠ABC=60+67

m∠ABC=127

so, option-4.........Answer


7 0
4 years ago
Read 2 more answers
What is the answer to this problem?
salantis [7]
We must first Isolate the Variable by removing factors that don't contain the variable: 

2(x + 7) < 12
2x + 14 < 12
2x + 14 - 14 < 12 - 14
2x < -2 
2x / 2 < -2/2
x < -1

Hope this helps! 



7 0
3 years ago
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