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BabaBlast [244]
4 years ago
10

What is the best first step in solving Negative 4 x + two-fifths greater-than StartFraction 5 over 10 EndFraction? Add Two-fifth

s to both sides. Subtract Two-fifths from both sides. Multiply both sides by Negative 4 and reverse the inequality symbol. Divide both sides by 10 and reverse the inequality symbol.
Mathematics
2 answers:
lisabon 2012 [21]4 years ago
8 0

Answer:

A

Step-by-step explanation:

Agata [3.3K]4 years ago
3 0

Answer:

(B) Subtract 2/5 from both sides.  

Step-by-step explanation:

What is the best first step in solving Negative 4 x + two-fifths greater-than StartFraction 5 over 10 EndFraction?

(A) Add Two-fifths to both sides.

(B) Subtract Two-fifths from both sides.  <<<<<-------Correct Answer

(C) Multiply both sides by Negative 4 and reverse the inequality symbol.

(D) Divide both sides by 10 and reverse the inequality symbol.

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The measures of the angles of a quadrilateral are x, x, x + 15 degrees, and x + 45 degrees; x = ?
dolphi86 [110]

Hola User__________

Here is your Answer...!!!

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Actually welcome to the concept of the Angle sum property...

The Angle sum property of a Quadilatetal =》

m/_A + m/_B + m/_C + m/_ D = 360°

Thus adding all the angles we get as....

=》 X + X + X+ 15° + X + 45° = 360°

=》 4X + 60° = 360°

thus ..4X = 360 - 60 = 300

Thus .. 4X = 300

X = 300 ÷ 4 =》 75°

X = 75°

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Braden treated his sister to lunch while visiting her in Dayton. Their lunch cost $200, and the
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Step-by-step explanation:

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3 years ago
Scores on the GRE are normally distributed with a mean of 514 and a standard deviation of 92. Use the 68-95-99.7 rule to find th
SpyIntel [72]

Answer:

2.5%

Step-by-step explanation:

The percentage of people taking the test who are above 698 is ___%

Empirical rule formula states:

95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ

From the question, we have:

Mean of 514 and a Standard deviation of 92

Hence:

μ ± xσ

514 ± 92x = 698

514 + 92x = 698

92x = 698 - 514

92x = 184

x = 184/92

x = 2

Hence, the data is correct and it is 2 standard deviation from the mean. Therefore, 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

The question is asking us to find the percentage of people taking the test who are above 698 is calculated as:

100 - 95% /2

= 5/2

= 2.5%

The percentage of people taking the test who are above 698 is 2.5%

8 0
3 years ago
2 questions 90 points
saw5 [17]

Answer:

 1)   Volume of prism = \frac{105}{8}ft^3=13.125ft^3

 2) Option B is the correct answer.

Explanation:

1) Volume of a prism is given by the expression, Volume V = Base area of prism x Height of prism.

 Base area = 3\frac{1}{2} *2\frac{1}{2}=\frac{3*2+1}{2} *\frac{2*2+1}{2} =\frac{7}{2} *\frac{5}{2}=\frac{35}{4} ft^2

Volume = \frac{35}{4}*1\frac{1}{2} =\frac{35}{4}*\frac{1*2+1}{2}=\frac{35}{4}*\frac{3}{2}=\frac{105}{8}ft^3

 Volume of prism = \frac{105}{8}ft^3=13.125ft^3

2) Volume of a prism is given by the expression, Volume V = Base area of prism x Height of prism.

 Base area = 4\frac{1}{4} *3in^2

 Volume = 4\frac{1}{4} *3*1\frac{1}{4}in^3

 Option B is the correct answer.

5 0
3 years ago
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