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3 years ago

What is the size of the product? Choose one: 1 x 3 3 x 1 3 x 3

Mathematics

2 answers:

bogdanovich [222]3 years ago

7 0

U don't show a product to choose from

Alex73 [517]3 years ago

7 0

Answer:

Step-by-step explanation:

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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

allsm [11]

I believe there is no such AP...

Recursively, this sequence is supposed to be given by

$\begin{cases}a_1=8\\a_k=a_{k-1}+d&\text{for }k>1\end{cases}$

so that

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

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

$33=8+(n-1)d$

$21=(n-1)d$

$n$ 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

$\displaystyle\sum_{k=1}^4(8+7(k-1))=74\neq123$

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

$\displaystyle\sum_{k=1}^8(8+3(k-1))=148\neq123$

8 0

3 years ago

What is the simplified form of each expression?<br><br> (7 – c)(–1)

Zigmanuir [339]

Answer:

-7+c

Step-by-step explanation:

distribute the - 1

5 0

3 years ago

What does m represent in the equation y=mx+b? Please I need help with this

artcher [175]

Slope

Step-by-step explanation:

y=mx+b

y=slope+ y-intercept

8 0

3 years ago

5. What is the measurement of each angle?

Alexxandr [17]

Answer:

x=14

Step-by-step explanation:

The sum of a interior angle is 180°

(7x-11)+(2x-3)+(5x-2)°=180°

7x+2x+5x=180+11+3+2

14x/14=196/14

x= 14

Hope this answers your question!! :)

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3 years ago

Helppppppppp plssssssssss

Tresset [83]

A. Is the answer of this question

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2 years ago