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alexgriva [62]
3 years ago
11

Which ordered pair is a solution of this equation 5x - 7y = -23 (4,0) (1,4) (4,1) (0,4)

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
5 0

Answer:

  • B)  (1 ; 4)

Step-by-step explanation:

(4 ; 0)

5×4 - 7×0 = 20 - 0 = 0 (false)

(1 ; 4)

5×1 - 7×4 = 5 - 28 = - 23 (true)

(4 ; 1)

5×4 - 7×1 = 20 - 7 = 13 (false)

(0 ; 4)

5×0 - 7×4 = 0 - 28 = - 28 (false)

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Easy question for easy points
poizon [28]

Answer:

50 berries left over

Step-by-step explanation:

55 berries     1700 berries

--------------- = -------------------

1 jar                   x jars

Using cross products

55x = 1700*1

Divide each side by 55

55x/55 = 1700/55

x = 1700/55

Changing to a mixed number

55 goes into 1700 30 times

30 *55 =16501700-1650 = 50

x = 30 50/55 = 30 10/11

There are 50 berries left over

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Answer:

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Step-by-step explanation:

3 0
3 years ago
Need help finding the domain and range
pogonyaev

Here are a few things you'll need to know for this question:

  • Domain: <u>The list of x-values that are possible on a line.</u>
  • Range: <u>The list of y-values that are possible on a line.</u>
  • Interval Notation: <u>Shows the domain/range using the endpoints</u>. Brackets mean that the endpoint is included, parentheses mean the endpoint is excluded. Ex: (2,10]. 2 is excluded, 10 is included.
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So firstly, let's look at the domain. We see that there is a closed circle at x = -2 and an open circle at x = 5. Using what we know, <u>the interval notation of the domain is [-2,5).</u>

Next, let's look at the range. We see that there is a closed circle at y = -5 and an open circle at y = 2. Using what we know, <u>the interval notation of the range is [-5,2).</u>

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What is $3.49 to $3.89 rounded to the nearest increase percent
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Equation:
 3.49x = 3.89
  x = 11%
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Answer:

x=10

Step-by-step explanation:

x-1 = 9

add 1 on both side

x-1+1=9+1

x=10

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