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11Alexandr11 [23.1K]
2 years ago
10

1 459/500 as a decimal

Mathematics
1 answer:
Ronch [10]2 years ago
6 0

Answer:

1.918

Step-by-step explanation:

1 then do 459/500 x 2 to make 918/1000 then add and convert

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The sum of a number x and -7 is less than or equal to 18.
pishuonlain [190]

Step-by-step explanation:

x + (-7) ≤ 18

x - 7 ≤ 18

x ≤ 18 + 7

x ≤ 25

Value of x is less than or equal to 25

5 0
3 years ago
A train leaves Philadelphia at 2:00 PM. A second train leaves the same city in the same direction at 4:00 PM. The second train t
polet [3.4K]

Answer: First train speed shall be 42 mi/hr

Second train speed shall be 84 mi/hr

Yes it is the valid answer, it gets annoying when almost everyone enters the wrong answer for a good laugh. Either way, hope this helps! Have a spectacular day.

Step-by-step explanation:

What is the 1st train's head start in miles?

Let +s+ = the speed of the 1st train in mi/hr

From 2PM to 4PM is 2 hrs

+d%5B1%5D+=+s%2A2+

---------------------

Let +d+ = distance the 2nd train travels until

it overtakes the 1st train

From 4PM to 6PM is 2 hrs

Start time when the 2nd train leaves

---------------------

Equation for 1st train:

(1) +d+-+2s+=+s%2A2+

Equation for 2nd train:

(2) +d+=+%28+s%2B42+%29%2A2+

--------------------

Substitute (2) into (1)

(1) +%28+s%2B42+%29%2A2+-+2s+=+s%2A2+

(1) +2s+%2B+84+-+2s+=+2s+

(1) +2s+=+84+

(1) +s+=+42+

and

+s%2B+42+=+42+%2B+42+

+s+%2B+42+=+84+

------------------

The 1st train's speed is 42 mi/hr

The 2nd train's speed is 84 mi/hr

---------------------------

check:

(2) +d+=+%28+s%2B42+%29%2A2+

(2) +d+=84%2A2+

(2) +d+=+168+

and

(1) +d+-+2s+=+s%2A2+

(1) +d+-+2%2A42+=+42%2A2+

(1) +d+=+84+%2B+84+

(1) +d+=+168+

8 0
2 years ago
Carlos bought 80 feet of wire for ​$17.60. He needs 30 more feet. If the unit price is the​ same, how much will he pay for the e
Alika [10]

Answer:

Carlos bought 80 feet of wire for ​$17.60.

Then the price for 1 feet of wire is 17.6/80 = 0.22

=> 30 feet of wire would cost: 30 x 0.22 = 6.6

Hope this helps!

:)

5 0
2 years ago
Pls help me with my math i wanna play a p e x
Brrunno [24]

Answer:

THE FIRST ONE 0.018 IS 18/1000

Step-by-step explanation:

Q 2 is 4 13/20

3 0
3 years ago
Read 2 more answers
5+3(q-4)=2(q+1) I don’t understand how to solve this question
Shtirlitz [24]

Answer:

q = 9

Step-by-step explanation:

5 + 3(q - 4) = 2(q + 1)

To solve, you need to get q by itself on one side.

5 + 3q - 12 = 2q + 2 --- distribute the multipliers next to the parenthesis

3q - 7 = 2q + 2 --- combine like terms

q - 7 = 2 --- subtract 2q from both sides

q = 9 --- add 7 to both sides


3 0
3 years ago
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