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padilas [110]
3 years ago
5

Tell whether x and y are in a proportional relationship. Explain your reasoning.

Mathematics
1 answer:
notsponge [240]3 years ago
8 0
No because they 90 to 200 is 110 but 200 to 325 is 125

110 obviously does not equal 125
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(x+2)(4+y)(5+6)(2+x)(4+0.5x)
Yuki888 [10]

(x+2)(4+y)(5+6)(2+x)(4+0.5x)

combine like terms

(x+2) (4+y) (11) (x+2) (4+.5x)

11(x+2)^2 (4+y)(4+.5x)

distribute

11(x^2 +4x+2) (16+4y+2x+.5xy)

(11x^2+44x+22)(16+4y+2x+.5xy)

5.5 x^3 y + 22 x^3 + 66 x^2 y + 264 x^2 + 198 x y + 792 x + 176 y + 704

3 0
3 years ago
Now see if you can solve these word problems about time and distance.
ladessa [460]

Answer:

3.5 hours

Step-by-step explanation:

Ediburgh -------------------------------350 miles-------------------------London

Let the distance traveled by train from Edin to London be "x"

hence the distance traveled by train from London to Edin would be "350-x"

  • The rate of Edin to London train is 60
  • The rate of London to Edin train is 40

Let the time they meet be"t"

Now, we know distance formula to be D = RT

Where

D is distance

R is rate

and

T is time

<u>Train from Edin to London:</u>

x = 60t

<u>Train from London to Edin:</u>

350-x = 40t

Solving for x:

350 - 40t = x

We put this into first equation:

x = 60t

350 - 40t = 60t

350 = 100t

t = 350/100

t = 3.5

They meet after 3.5 hours

4 0
3 years ago
Ted Roberts earned a salary of $41,700 last year. His benefits were 32.5% of
Paul [167]

Step-by-step explanation:

Ted's second job offers 49,024 and it is 3819 greater than the first job

3 0
2 years ago
Factor the following expression.<br><br> 10x^5 + 5x^3 - 14x^2 - 7
nadezda [96]
(5x^3-7)(2x^2+1 answerrrrrrrrrr
4 0
2 years ago
In Smallille, 2,400 out of 20,000 workers are unemployed.In Bigtown, 6,750 out of 75,000 workers are unemployed. Which town has
viktelen [127]
2400/20000 = 0.12;
6750/75000 = 0.09;
Because 0.12 > 0.09, Smallille has a larger unemployed problems than Bigtown.
4 0
3 years ago
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