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True [87]
4 years ago
6

This is #5 Algebra-Find the value for x I know it’s 11 but how do I get there.

Mathematics
1 answer:
Sergeeva-Olga [200]4 years ago
3 0

Answer:

x = 11

Step-by-step explanation:

the line x + 5 is a mid segment of the triangle and thus is half the length of 3x - 1, that is

x + 5 = \frac{1}{2}(3x - 1)

multiply both sides by 2 to eliminate the fraction

2x + 10 = 3x - 1 ( subtract 3x from both sides )

- x + 10 = - 1 ( subtract 10 from both sides )

- x = - 11 ( multiply both sides by - 1 )

x = 11




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Calculate the estimate of the mean height of the students in cm and explain your answer
Zolol [24]

Step-by-step explanation:

we find the average height of each height first,

t¹= (120+124)/2

=244/2

=122

t²= (124+128)/2

t²= 252/2

t²= 126

t³= (128+132)/2

t³= 260/2

t³= 130

t⁴= (132+136)/2

t⁴= 268/2

t⁴ =134

t⁵= (136+140)/2

t⁵= 276/2

t⁵= 138

so multiplying each height by its frequency we can find the total height, so we have..

total height= (122*7)+(126*8)+(130*13)+(134*9)+(138*3)

= 854+1008+1690+1206+414

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8 0
3 years ago
HELPPPP PLEASE!!!! Don't understand
iragen [17]

Answer: 20% is your answer


Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
The Perimeter of a Pentagon is 20.5 centimeters. Four sides of this pentagon have the same length, in centimeters, x, and the ot
RideAnS [48]

Answer:

4.6\ \text{cm}

Step-by-step explanation:

Perimeter of the pentagon = 20.5 cm

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Perimeter of the pentagon will be

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Answer:

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Fiction Books - 328

Total Books - 400

72 + 328 = 400

Percent of non fiction books to book fair - 18%

\frac{72}{400}

Simplify it until it has a denominator of 100, since that is the standard denomination for percentages.

\frac{18}{100}

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The distance from earth to Neptune is greater. And it’s 1.0133 times greater. (I think)
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