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iogann1982 [59]
3 years ago
15

Solve for x. x+4/2x+2=4/x+1

Mathematics
1 answer:
HACTEHA [7]3 years ago
5 0

Answer:


Step-by-step explanation:

First, cross multiply.

(x+4)(x+1)=4(2x+2)

x^2+5x+14=8x+8

x^2-3x-4=0

(x+1)(x-4)=0

x+1=0   x-4=0

x = -1, x=4


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A train travels from station A to C having distance of 285 miles in 6 hours. During the journey, it reaches intermediate station
Nesterboy [21]

Answer:

Distance between B and C = 3\times 55=165miles

Step-by-step explanation:

Let the time taken to reach from station A to B be x  hr

Let the time taken to reach from station B to C be y  hr

Given total time from station A to C be 6 hr

∴ x + y = 6

⇒ y = 6 - x → (1)

Also total distance given is 285 miles

As Distance=Speed\times Time

∴ distance travelled between station A and B

  =40\times xmiles

distance travelled between station B and station C

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So, 40x + 55y = 285  

⇒ 40x + 55(6 -x) = 285     (From 1)

=> 40x + 330 - 55x = 285

=> -15x = 285 - 330

=> -15x = -45  ⇒ x=3

gives y = 6-3 = 3 hours


Distance between B and C = 3\times 55=165miles

5 0
3 years ago
1 Rafeeq bought a field in the form of a quadrilateral ( ABCD ) whose sides taken in
disa [49]

Answer:

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8 0
4 years ago
What is the value of s?<br>____ units
vagabundo [1.1K]
ABD is the right triangle. AD is the hypotenuse.
By the <span>Pythagorean theorem:

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<span>
s = 17 units.</span>
7 0
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