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3 years ago

The first two terms of an arithmetic sequence are a 1 = 2 and a 2 = 4. What is a 10 , the tenth term?

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

5 0

I think the answer is D. 20. Hope this helps!!!!

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The price of a video game increases by 20%, then decreases by 10%. If the final price is $46.98,

Elena-2011 [213]

Answer:

The original price was $43.50

Step-by-step explanation:

Let

x ----> the original price of a video game

we know that

1) The price of a video game increases by 20%

$100\%+20\%=120\%=120/100=1.20$

The final price is equal to the original price multiplied by 1.20

$1.20x$

2) The price of a video game decreases by 10%

$100\%-10\%=90\%=90/100=0.90$

The final price is equal to the price at this moment multiplied by 0.90

$0.90(1.20x)=1.08x$

we have that

$1.08x=46.98$

solve for x

$x=46.98/1.08\\x=\$43.50$

4 0

3 years ago

Which of these graphs represents a function?

Alisiya [41]

Answer:

the upper right one

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3 years ago

Read 2 more answers

Which is an exponential growth function?

Ugo [173]

Answer: Exponential growth is a pattern of data that shows greater increases with passing time, creating the curve of an exponential function.

Step-by-step explanation:

5 0

4 years ago

HELP ASAP this is a timing quiz?

mestny [16]

Answer:

y = -3/2x + 6

y = -1.5x + 6

Step-by-step explanation:

5 0

3 years ago

Please help me , I have been try to solve it for 2 hours. thank you very much.

Alexxandr [17]

Answer:

See the three answers with their explanation below

Explanation:

a. To eliminate the fraction from each side you multiply both sides by the least common denominator of the fractions of the two sides.

In this case it is 2×3 = 6

See how you do it:

$6\times \frac{1}{2}(x-4)=6\times \frac{1}{3}x+6\times 2\\ \\ 3(x-4)=2x+12$

b. This word problem would lead to the given equation:

Half the age of Alice 4 years ago equals 2 more than one third of her current age.

Current age: x
Age four years ago: x - 4
Half the age of Alice four years ago: $\frac{1}{2}(x-4)$

2 more than one third of her current age: $2+\frac{1}{3}x=\frac{1}{3}x+2$

Equality condition:

$\frac{1}{2}(x-4)=\frac{1}{3}x+2$

c. Solution

$\frac{1}{2}(x-4)=\frac{1}{3}x+2\\ \\ 3(x-4)=2x+12\\ \\ 3x-12=2x+12\\ \\ x=24$

Meaning: Alice is currently 24 years old.

3 0

4 years ago