4 years ago

PLEASE HELP

Mathematics

1 answer:

a_sh-v [17]4 years ago

6 0

Answer:

Not equal to.

Step-by-step explanation:

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An = 5 - 7n. What is the value of a12?

Delicious77 [7]

Answer:

The value of $a_{12}=-79$

Step-by-step explanation:

Being the general expression of the sequence:

$a_n=5-7n$

We replace the value n=12 to get

$a_{12}=5-7\times 12=5-84=-79$

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3 years ago

What is the average cost of 7 articles if 3 of them cost 30k each and the rest cost 12.5k each

LenKa [72]

${\bold{\red{\huge{\mathbb{QUESTION}}}}}$

what is the average cost of 7 articles if 3 of them cost 30k each and the rest cost 12.5k each

$\bold{ \red{\star{\blue{GIVEN }}}}$

TOTAL NUMBER OF ARTICLE= 7

ARTICLES FOR 30K = 3

ARTICLES FOR 12.5K = 7-3= 4

$\bold{\blue{\star{\red{TO \: \: FIND}}}}$

Average cost of 7 articles

$\bold{ \green{ \star{ \orange{FORMULA \: USED}}}}$

$\red{AVERAGE = \frac{TOTAL \: COST}{ NUMBER \: OF\: ARTICLES }}$

$\huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}$

$Average \: cost \: of \: 7 \: articles - > \\ \frac{(3 \times 30k) + (12 .5k \times 4)}{7} \\ \frac{90k + 50k}{7} \\ \frac{140k}{7} \\ \blue {Average \: cost \: of \: 7 \: articles - >} \\ 20k$

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3 years ago

Jessica made $228 for 12 hours of work.

Vinvika [58]

Answer: 8 hrs

Step-by-step explanation:

divide 228 by 12 to get a unit rate of 19 and then divide 152 by 19 to get 8

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3 years ago

Please help, the problem is in the picture!

V125BC [204]

Answer:

the answer is c

Step-by-step explanation:

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3 years ago

Answers choices are in the picture

UkoKoshka [18]

Answer: I believe the answer is b.

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3 years ago