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2 years ago

12

The first and last term of an A. P are 1 and 121 respectively. Find the number of terms in the A.P and the common difference bet

ween them if the sum of the term is 1281

1 answer:

LuckyWell [14K]2 years ago

6 0

Answer:

No.of terms=21

Common difference=6

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Solve this system of liner equations.separate the -x and y - values with a comma. 2x=96-14y 9x=40-14y

Vaselesa [24]

<span>A) 2x=96-14y
B) 9x=40-14y
Rearranging algebraically
</span>
A) 2x <span>+14y = 96
B) 9x </span><span>+14y = 40</span>

Multiplying equation A by -1
A) -2x <span>-14y = -96 Then adding it to equation B
B) 9x </span><span>+14y = 40
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3 years ago

Two math classes took the same quiz. The scores of 10 randomly selected students from each class are listed below. • Sample of C

padilas [110]

Answer:

Step-by-step explanation:

First you have to find the medians which is when you put the numbers in number order and find the one in the middle.

Class A: 60,65,70,70,75,80,80,85,90,90

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Class B: 75,85,85,85,90,90,90,90,95,100

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That the class B is more advanced, and they probably studied.

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2 years ago

Leila is buying a dinosaur model. The price of the model is xxx dollars, and she also has to pay a 7\%7%7, percent tax.

padilas [110]

The expressions that could represent how much Leila pays in total for the model

\dfrac{107}{100}x

100 107 Option A is correct.

This is further explained below.

<h3>Which of the following expressions could represent how much Leila pays in total for the model?</h3>

The price of the model is x

Now we are given that she also has to pay a 7 tax.

Amount of tax =7 % x

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In conclusion, the statement might signify Leila's overall cost for the model. $\frac{107}{100} x$

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1 year ago

Factor −5x2 + 10x.<br><br> −5x(x + 2)<br> 5(−x2 + 10x)<br> 5x(−x + 2)<br> x(5x + 10)

Hitman42 [59]

${ \red{ \bold{option \: (c)}}}$

Step-by-step explanation:

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Take ${ \purple{ \tt{5x}}}$ as common. Then,

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1 year ago

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777dan777 [17]

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