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Wittaler [7]
3 years ago
10

Which expressions are equivalent to 5x - 15

Mathematics
2 answers:
lara31 [8.8K]3 years ago
7 0
B C and E are equivalent to 5x -15
zheka24 [161]3 years ago
5 0
Your answer would be A I think !
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I hope someone can help me, I usual help people too, it’s for solving equations with systems,hers a photo
blsea [12.9K]

Step-by-step explanation:

Flour needed to make birthday cakes = 2x

Flour needed to make holiday cakes = 1y = y

Maximum amount of Flour allowed = 20 (No more than 20)

Therefore

2x + y must not be more than 20

2x + y \leqslant 20

4 0
3 years ago
Jane drinks 275 milliliters of juice from a 1 liter container. How much juice is left
Lubov Fominskaja [6]
Well, there's 1000 milliliters in one liter.
Do 1000 - 275. 
You should get 775.

The answer is 775 milliliters of juice.  <span />
8 0
3 years ago
50000 fish were stocked in a lake with a 20% decrease each year . whats the 1st year will it be under 5000 fish
Marina CMI [18]

Answer:

no it will no be

Step-by-step explanation:

6 0
3 years ago
HELP WITH THIS PLEASE
kykrilka [37]

Answer:

P = 10x + 4

Step-by-step explanation:

Formula to find perimeter:

P = 2(l + w)

P = 2(2x + 3x + 2)

P = 2(5x + 2)

P = 10x + 4

5 0
3 years ago
According to a poll taken last year, 45% of the cities' residents get most of their news from the Internet. To conduct a follow-
notsponge [240]

Answer:

The sample size is  n  =419

Step-by-step explanation:

From the question we are told that

    The population proportion is  p = 0.45

     The  margin of error is  E =  0.04

Given that the confidence level is  90%

  Then the level of significance can be mathematically represented as

          \alpha  =  100 -90

          \alpha  =  10\%

         \alpha  = 0.10

Next we obtain the level of significance from the normal distribution table the value is    

             Z_{\frac{\alpha }{2} } =  1.645

   Generally the sample size is mathematically represented as  

        n  = [ \frac{Z_{\frac{\alpha }{2} }}{E} ]^2 *  p(1- p )

substituting values

         n  = [ \frac{1.645 }{0.04} ]^2 *  0.45(1- 0.45 )

        n  =419

     

6 0
4 years ago
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