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scoray [572]
3 years ago
12

Jeff has 2 dimes. Each day he gets 3 more. Which shows how many he has after (x) days?

Mathematics
1 answer:
balu736 [363]3 years ago
6 0

Answer:

3x+2

Step-by-step explanation:

Jeff starts with 2 dimes (+2). Jeff then gets 3 more dimes for each day or he gets 3 dimes for each x. 3 dimes x times is just 3 times x or 3x. Therefore the answer is 3x+2.

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What is an expression that compares two or more numbers
Kazeer [188]
A ratio comparing two quantities measures in different units . An equation stating that two ratios or rates are equivalent. Percent proportion . One ratio or function compares part of a quantity to the whole quantity.
8 0
3 years ago
what is the first term of a geometric sequence in which the second term is 6 and the fourth term is 54
IRISSAK [1]
For a geometric sequence:
U_{n} = a * r^{n - 1}
U_{n} = the nth term, i.e. U₂ is the second term, U₃ is the third term, etc.
a = first term (U₁)
r = multiplier
n = number corresponding to the postion of the nth term in the sequence, e.g. for U₂, n = 2, for U₃, n = 3

According to the information:
U₂ = 6
U₄ = 54
So:
U_{2} = a * r^{(2) - 1} = 6 \\\\ a * r^{1} = 6 \\\\ ar = 6 \\
U_{4} = a * r^{(4) - 1} = 54 \\\\ a * r^{3} = 54 \\\\ ar^{3} = 54
Now, we have two equations in terms of a and r;
We can work out a by first working out r;
If we let the U₂ eq'n be [1] and the U₄ eq'n be [2];
Then, we do [2] ÷ [1] to cancel out the a and get an equation with only r that we are able to solve and then just solve it, like so:
\frac{ar^{3}}{ar} =  \frac{54}{6} \\\\ r^{2} = 9 \\\\ r = 3
Note: r has to be 3, and not -3, as the two given terms of the sequence tell us that the terms of the sequence will get bigger from each term to the next so r has to be above 1.

Now that we know r, we can sub it back into either [1] or [2] and solve for a, Its quicker and easier to sub it into [1] as we have no powers greater than 1 and we have smaller numbers to deal with (but you would get the same value of a either way), so:
U₂ = ar = 6
a(3) = 6
a = 6/3
a = 2
5 0
3 years ago
Marice mows the lawns on Saturday. Last week it took him 5 1/2 hours to finish. This week it took only 5 hours. How many times l
Anna35 [415]

5.5 + x = 5
one half
6 0
3 years ago
Steve is cutting out decoration stars for his neighbors Labor day celebration. Steve has to cut out 9 stars in the last 10 minut
nirvana33 [79]

Answer:

54 Stars

Step-by-step explanation:

Step 1:

60 mins = 1 Hour

Step 1:

10 × 6 = 60

Step 2:

9 × 6 = 54

Answer:

54 Stars

Hope This Helps :)

4 0
3 years ago
Read 2 more answers
Find x if cos(x)=.1412
Rudik [331]
0.99999696 is your answer I am pretty sure.
6 0
3 years ago
Read 2 more answers
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