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3 years ago

A. Create an algebraic expression.

Mathematics

2 answers:

NikAS [45]3 years ago

7 0

Answer:

Step-by-step explanation:

5x = 30

If there are 5 students in a row, find the number of rows given that the number of total students is 30.

Here 'x' represents the number of row

kherson [118]3 years ago

7 0

Answer:

a+b=ab

Step-by-step explanation:

a plus b is equal to ab.

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Choose the correct function rule.

Dafna1 [17]

Answer:

A is the right answer i do believe

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3 years ago

'Five times a number minus eight is 17.5.

11Alexandr11 [23.1K]

Answer:

5.1

Step-by-step explanation:

you need to work backwards.

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i hope this helps :)

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3 years ago

Evaluate each using the values given please help me

yaroslaw [1]

Answer:

the first one should be -548

Step-by-step explanation:

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4 0

3 years ago

liberstina [14]

The answer would be A (3/2)

4 0

3 years ago

Read 2 more answers

If tñ=2ñ+3, find S10

Allisa [31]

Answer:

$S_{10}=280$

Step-by-step explanation:

Given that,

$t_n=2n+3$ ...(1)

We need to find the value of $S_{10}$ .

Put n = 1 to find the first term.

$t_1=2(1)+3=5$

Put n = 2 to find the second term.

$t_2=2(2)+3=7$

Put n = 3 to find the third term.

$t_3=2(3)+3=9$

Put n = 10 to find the tenth term.

$t_{10}=2(10)+3=23$

It means we need to find the sum of 5,7,9,.....,23.

The formula for the sum of n terms is given by :

$S_=\dfrac{n}{2}(a+a_n)$

We have, n = 10, a = 5 and $a_n=23$

So,

$S=\dfrac{10}{2}(5+23)\\\\S_{10}=10\times 28\\\\=280$

So, the value of $S_{10}$ is equal to 280.

3 0

3 years ago