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yanalaym [24]
3 years ago
14

Identify the value of a

Mathematics
1 answer:
Amanda [17]3 years ago
4 0
Use exponential law, we have

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What is the value of x
harkovskaia [24]
The value is 3!!!!!!
6 0
3 years ago
ILL GIVE BRAINLIST TO WHOEVER ANSWERS PLS ANSWER
KIM [24]

Answer:

B C D  brainlest please

Step-by-step explanation:

x               y

0              6

1               7

2              8

3              9

8 0
3 years ago
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-x+4(x+3)=-12<br>is this never true or always true
rodikova [14]

Answer: Never true.


Step-by-step explanation: Distribute the numbers: 4 times x is 4x, 4 times 3 is 12. Then you have the equation: -x+4x +12 = -12. Now, choose a random number, maybe -4. A negative plus a negative cancels out so you are left with 4-16(Because you distribute the number) +12 = -12. 4-16 is -12. -12 plus 12 equals 0.

7 0
3 years ago
Two trains started moving at the same time, train A from Boston to New York, and train B from New York to Boston. The distance b
Ede4ka [16]

Answer:

  • <u>After 1.7 hours</u>

Explanation:

<u>1. Calculate the average speed of train B</u>

  • 60mph = 3/4 (s) ⇒ s = 60 (4/3) mph = 80 mph

<u>2. Build a table</u>

When the two trains meet:

Train     Average speed     Distance       time (distance/average speed)

                 mph                            

A                 60                             x                        x/60

B                 80                        240 - x                (240 - x) / 80

<u>3. Write the equation</u>

The time, when the two trains meet, is the same for both trains:

                  \dfrac{x}{60}=\dfrac{240-x}{80}\\ \\ \\ 80x=14,400-60x\\ \\ 80x+60x=14,400\\ \\ 140x=14,400\\ \\ x=14,400/140\\ \\ x=102.85miles

<u>4. Calculate the time:</u>

  • x/60 = 102.86 / 60 = 1.7 hours

The two trains will meet after 1.7 hours

7 0
3 years ago
How to simplify -3 (4×-5y-5×)
VMariaS [17]
Distribute -3 to the rest of the numbers by multiplying them together. That’s all you need to do you don’t have to solve
6 0
3 years ago
Read 2 more answers
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