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tangare [24]
3 years ago
13

In ten years the average number of hours of TV watched per week dropped from 23.9 to 21.4. Find the percent of change. Round to

the nearest tenth of a percent
Mathematics
1 answer:
taurus [48]3 years ago
6 0

Answer:

I think its 10.5

Step-by-step explanation:

Find the number in the tenth place

1 and look one place to the right for the rounding digit 0. Round up if this number is greater than or equal to

5 and round down if it is less than

5.0.1

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Someone please help? 25 points!!!!​
sergij07 [2.7K]

\huge \boxed{\mathbb{QUESTION} \downarrow}

  • Find the value of x.

\large \boxed{\mathbb{ANSWER\: WITH\: EXPLANATION} \downarrow}

Given,

  • DE || AB
  • AD = 2x
  • CD = x + 3
  • BE = 2x - 1
  • CE = x

Value of x (CE) = ?

__________________

We can solve this question using the Basic<u> Proportionality Theorem (BPT).</u> According to BPT, <em>if a line is drawn </em><em>parallel </em><em>(</em><em>|</em><em>|</em><em>)</em><em> </em><em>to</em><em> </em><em>1</em><em> </em><em>side of a triangle to intersect the other </em><em>2</em><em> </em><em>sides </em><em>in </em><em>2</em><em> distinct points then the other </em><em>2</em><em> </em><em>sides </em><em>will </em><em>be</em><em> divided in the same ratio. </em>

__________________

So in this triangle,

\tt\frac{CD}{AD} =  \frac{CE}{BE} \\

Then,

\tt \frac{x + 3}{2x}  =  \frac{x}{2x - 1}  \\  \\  \sf \: Using \: cross \: multiplication.... \\  \\  \tt \: x + 3(2x - 1) = x(2x) \\   \tt \: x(2x - 1) + 3(2x - 1) =  {2x}^{2}  \\   \tt \:  {2x}^{2}  - x + 6x - 3 =  {2x}^{2}  \\  \\ \sf Cancel \: out \: 2 {x}^{2}  \: from \: both \: the \: sides \\  \\  \tt \:  - x + 6x - 3 = 0 \\  \tt \:    - x + 6x = 3 \\  \tt \: 5x = 3 \\     \large\boxed{\boxed{\bf \: x =  \frac{3}{5} }}

__________________

  • The value of x will be <u>3/5 (option b.)</u>
6 0
3 years ago
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What is the difference between gcf and lcm
Zarrin [17]
Greatest common factor=gcf
least common multule=lcm
with 12 and 16
factors of 12=2 times 2 times 3
factors of 16=2 times 2 times 2 times 2
greates common factor is 2 times 2=4
least common multiule means all factors combined minus repeats or 2 times 2 times 2 times 2 times 3=48
8 0
3 years ago
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By what number should I multiply 1 1/4 by to obtain 3/4(fractions)
Reptile [31]
1 1/4x = 3/4
5/4x = 3/4
x = (3/4) / (5/4)
x = 3/4 * 4/5
x = 12/20 which reduces to 3/5

check..
1 1/4 * 3/5 =
5/4 * 3/5 =
15/20 reduces to 3/4 

so u would multiply 1 1/4 by 3/5 to get 3/4
7 0
3 years ago
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The equation of the line that passes through (-2, -4) and (6’0)
STALIN [3.7K]

Answer:

y = 1/2x - 3

Step-by-step explanation:

y2 - y1 / x2 - x1

0 - (-4) / 6 - (-2)

4/8

= 1/2

y = 1/2x + b

0 = 1/2(6) + b

0 = 3 + b

-3 = b

8 0
3 years ago
Determine two compatible numbers to use to estimate the quotient. 5071/62
Sav [38]
5071 can be represents by 5000 and 62 by 60

estimate  is 5000 / 60  = 500/6 = about 83
5 0
4 years ago
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