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2 years ago

15

The age of a father is 2 less than 7 times the age of his son. In 3 years, the shn kf their ages will be 52. If the sons present

age is 5 years, whoch equation models this situation

1 answer:

creativ13 [48]2 years ago

4 0

Let x stand for father
(7*5)-2=x
(5+3)+(x+3)=52

x=33

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yanalaym [24]

Your answer is 21 for this one.

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2 years ago

in a AP the first term is 8,nth term is 33 and sum to first n terms is 123.Find n and common difference

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I believe there is no such AP...

Recursively, this sequence is supposed to be given by

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so that

$a_k=a_{k-1}+d=a_{k-2}+2d=\cdots=a_1+(k-1)d$

$a_n=a_1+(n-1)d$

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$n$ has to be an integer, which means there are 4 possible cases.

Case 1: $n-1=1$ and $d=21$ . But

$\displaystyle\sum_{k=1}^2(8+21(k-1))=37\neq123$

Case 2: $n-1=21$ and $d=1$ . But

$\displaystyle\sum_{k=1}^{22}(8+1(k-1))=407\neq123$

Case 3: $n-1=3$ and $d=7$ . But

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Case 4: $n-1=7$ and $d=3$ . But

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Hope this answers the question. Have a nice day.</span>

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2 years ago

Plz help 13 points!!!

love history [14]

Hello!

So, you have to plot the points on the graph.

Your point is (4, -3/4) so, plot the 4 on the x-axis, and the -3/4 on the y-axis.
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I have attached an image of what it looks like below.

I hope this helps :))

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