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Cloud [144]
3 years ago
8

A car travels 90 miles in 1.5 hours. How many miles will it travel in 5 hours if its speed remains the same?

Mathematics
1 answer:
Anna [14]3 years ago
7 0

Answer:

300 miles

Step-by-step explanation:

i am doing the same test right now

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Which expression is equivalent to 2-3/2-5​
Tamiku [17]

Answer:

-4.5

Step-by-step explanation:

4 0
3 years ago
How do you solve 3x-2y=-5 ; 3y-4x=8 for x and y. Explain please.
blagie [28]
3x-2y=-5
3y-4x=8

1) multiply the first equation by 3
   3(3x-2y=-5)   this will give you the new equation: 9x-6y=-15

2) multiply the second equation by 2
   2(3y-4x=8)    this should give you the equation: 6y-8x=16

3) combine both equations/ like terms
    9x-6y=-15
    6y-8x=16

4) -6y and 6y cancel out 
    9x=-15
    -8x=16

5)  9x and -8x combine to make 1x or just x and -15 combined with 16 gives you just 1

6) we are now left with:
    x=1 

7) plug in the x to any of the two original equations ( i chose the first) 
   3x-2y=-5 
   3(1) - 2y = -5
   3 - 2y = -5
   -2y = -8
   y = 4
   When you plug in the x=1 you are given 3(1) - 2y = -5
   Distribute the 3 and you should have 3 - 2y = -5
   Subtract 3 from 3 (this cancels out) then from -5
   This should leave you with -2y = -8 ( -3 and -5 add to -8)
   Divide by -2 ( -2 divided by -2 cancels out) 
   -8 divided by -2 gives you 4 (two negatives make a positive)
   
So, y=4 and x=1
 To check, plug in x=1 and y=4 into one equation. when you're done with that you can plug them into the other. when you plug them into the first equation you get -5=-5 which means they worked. when plugged into the second, the result is 8=8 which means x=1 and y=4 worked for both equations. 

   

6 0
3 years ago
Simplify the radical expression. 3^ sqrt 125x^9
QveST [7]
\sqrt[3]{125x^9} = \sqrt[3]{(5x^3)^3} =5x^3

The answer is 5x³
6 0
2 years ago
Write the expression 2×2×2×2+7×7−5×5×5 using exponents.<br> ​
Fantom [35]

Answer:

Step-by-step explanation:

2×2×2×2+7×7−5×5×5 =2⁴ + 7² - 5³

3 0
3 years ago
Read 2 more answers
Assume that the pond contains 90 fish: 64 purple, 25 green, and 1 red. A contestant pays $0.55 to randomly catch one fish and re
Licemer1 [7]

Answer:

The carnival is losing (on average) $0.15 on each play

Step-by-step explanation:

To find out how much the carnival wins or looses in each play one subtract the expected value (EV) from each play from the amount charged by the carnival for each play ($0.55). If the expected value is higher than what the carnival charges, the carnival is losing money.

Expected is the sum of the payouts of each bet multiplied by its likelihood:

EV= \frac{64*0.40+25*1.15+1*9.00}{90}\\EV= 0.70

Since the expected value is higher than $0.55, the carnival is losing money, on average, on each play:

0.55-0.7 = -0.15

The carnival is losing (on average) $0.15 on each play

6 0
3 years ago
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