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just olya [345]
3 years ago
13

The distance a train travels d is proportional to a constant rate of speed r at different times t which equation shows the relat

ionship between the speed of the train and the distance traveled A r=dt B r=d+t C r=d-t D r=d/t
Mathematics
1 answer:
Anarel [89]3 years ago
6 0

Answer:

D

Step-by-step explanation:

d = rt so to isolate r you divide both sides by t, leaving you with r=d/t

its basically speed=distance/time, or s=d/t if that's more farmiliar to you

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The value of square root of -9 is not -3 because
andriy [413]

Answer:

The square root of -9 cannot be -3 because -3 squared or -3 times -3 equals 9 not -9.

Hope this helps!

6 0
3 years ago
Gilda walks to the train station. If she walks at the rate of 3 mph, she misses her train by 7 minutes. However, if she walks at
Salsk061 [2.6K]
We'll represent the distance as d and the time as t. 
d= 3(t+7)            because Gilda is 7 minutes late when travelling 3 mph
d= 4(t-5)             because Gilda is 5 minutes early at 4 mph

d= 3t + 21
d= 4t -20
3t +21 =4t -20
41=t
d= 3(41) +21= 144
The distance is 144 miles. 
3 0
4 years ago
Read 2 more answers
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avanturin [10]

Answer:

1/125, 1/625, 1/3125

Step-by-step explanation:

a8=25*(1/5)^7=25/78125=1/3125

5 0
3 years ago
Solve for X:<br> 1.) 3x-4=6x+5<br> 2.) 3x-4=6x+5<br> 3.) -2(1+7x) = -100<br> 4.) x - 1 + 3= - 2- x
TiliK225 [7]

Answer:

1) -3

2) -3

3) 7

4) -2

4 0
4 years ago
Read 2 more answers
Help me please and thank u
marin [14]

\large \mathfrak{Solution : }

As we know :

Dividend = Divisor × Quotient ( taking remainder as 0 )

So, Quotient = Dividend ÷ Divisor

by using the above relation we can say :

  • q = t ÷ 23

therefore, correct option is C. t ÷ 23

6 0
3 years ago
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