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faust18 [17]
3 years ago
12

The 70th term of the arithmetic sequence the 70th term of the arithmetic sequence 18,34,50,...

Mathematics
1 answer:
Sedbober [7]3 years ago
3 0

Answer:1122

Step-by-step explanation:

Hve to work out the general equation first by calculating the common difference-16.

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Christine is 4 years younger than Mark. 3 years from now, she will be two-thirds as old as Mark find their present ages.Complete
icang [17]

Answer:Mark Is 9 years old; Christine is 5 years old

Step-by-step explanation:

Present age

LET  mark age be x

Christine be x-4 yrs

In 3 yrs Time

Mark will be x+3 yrs old

Christine  will be  (x -4 +3) = x-1 years old

Also, In 3 years time

Christine  = 2/3 Mark

such that

  x-1 = 2/3(x+3)

  x -1= 2x+6 / 3

    3x  -3= 2x+6

      3X--2X = 6+3

         =X=9

Mark Is 9 years old

Christine is   x -4 = 9-4=5 years old

5 0
3 years ago
Martin can travel 174 miles in 3 hours. At this rate, how far can he travel in 7.
Blizzard [7]

Answer:

I believe the answer is 406 miles.

Let me know of this is the correct answer

7 0
3 years ago
What is the value of 9/10÷1/5 ?
Anna35 [415]
The answer of 9/10 divided by 1/5 is 4.5
3 0
3 years ago
Read 2 more answers
EXPLAIN THE ERROR Cody was given two points (1/2,4) and (2/3,1), on a line and asked to create a linear equation in standard for
inessss [21]

Answer:

Cody made a mistake when calculating the slope of the line and this affected every other steps after than.

She divided -3 by 6 instead of -3 by 1/6

Step-by-step explanation:

Given

(x_1,y_1) = (\frac{1}{2},4)

(x_2,y_2) = (\frac{2}{3},1)

<em>See attached for steps</em>

Required

Explain Cody's error

<em>Cody made a mistake when calculating the slope of the line and this affected every other steps after than.</em>

See Proof

Slope (m) is calculated as thus:

m =\frac{y_2 - y_1}{x_2 - x_1}

m =\frac{1 - 4}{\frac{2}{3} - \frac{1}{2}}

m =-\frac{ 3}{\frac{1}{6}}

m = -3/\frac{1}{6}

m = -3 * 6

m = -18

This is in contrast to m = -\frac{1}{2}, calculated by Cody

Solving further to determine the equation.

y - y_1 = m(x - x_1)

Where

(x_1,y_1) = (\frac{1}{2},4)

m = -18

y - 4 = -18(x - \frac{1}{2})

y - 4 = -18x + 9

Collect Like Terms

y + 18x = 9 + 4

y + 18x = 13

6 0
3 years ago
To get from point A to point B you must avoid walking
Nikitich [7]

p

the rigth awnser is 41 meaters east to were

Step-by-step explanation:

possible to walk through the

7 0
3 years ago
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