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vladimir2022 [97]
3 years ago
14

Mr. Smith's first test's data: 55, 42, 78, 99, 69, 83, 74, 83, 97.

Mathematics
1 answer:
MrRa [10]3 years ago
8 0
Median: 78
Mode: 83
Mean:75.6
Q1: 62
Q3: 90
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Which of the following is a solution of x2 + 5x = −2?
adoni [48]
X^2 + 5x = -2
x^2 + 5x + 2 = 0

x = -b (+-) sqrt (b^2 - 4ac) / 2a
a = 1, b = 5, and c = 2

x = -5 (+-) sqrt (5^2 - 4(1)(2)) / 2(1)
x = -5 (+-) sqrt (25 - 8) / 2
x = -5 (+-) sqrt (17) / 2

answer is : negative 5 plus or minus the square root of 17 divided by 2
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3 years ago
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A)250cm =______ mm.<br>b)5000m = ____ km. <br>c) 200km =______cm.​
Liono4ka [1.6K]

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Section 1 - Question 1
xenn [34]

Value of 5(d–2) is 45.

Option C is correct.

Step-by-step explanation:

We are given 3(d+1)=4(d–2) and we need to find the value of 5(d–2)

First we will solve 3(d+1)=4(d–2)  to find value of d:

Solving:

3(d+1)=4(d–2) \\3d+3=4d-8\\3d-4d=-8-3\\-d=-11\\d=11

So, value of d = 11

Now putting value of d in 5(d–2) and finding its value:

5(d–2)\\=5(11-2)\\=5(9)\\=45

So, value of 5(d–2) is 45.

Option C is correct.

Keywords: Solving Equations

Learn more about Solving Equations at:

  • brainly.com/question/1563227
  • brainly.com/question/2403985
  • brainly.com/question/11229113

#learnwithBrainly

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Solve linear equation two variable

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Ben drives 405 mile on 15 gallons
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