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3 years ago

A boogie board that has a regular price of $69 is on sale at a 35% discount. What is the sale price with a 7% tax?

1 answer:

5 0

You take 69 * 0.35 and then take that total (24.15) so 60-24.15= 35.85 then to find the tax take 35.85*.07=2.51 so your answer is 35.85+2.51=38.36

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2 years ago

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Aurora has been babysitting for 30 minutes, which is 20% of the total time she must babysit. What is the total amount of time in

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3 years ago

Which of ratio is equivalent to 3:4 ?<br> 12:9<br> 9: 20<br> 9:12<br> 803 : 804

Sever21 [200]

Answer:

Step-by-step explanation:

3/4 = 9/12

This is because

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3 years ago

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Write the first three terms of the series for which tn = 2(n+3). Find the number of terms of the series required to make the sum

ira [324]

Answer:

The first three terms of the series are 8, 10 and 12. The number of terms is 12 to make the sum 228.

Step-by-step explanation:

The series is defined as

$t_n=2(n+3)$

Put n=1.

$t_1=2(1+3)=2\times 4=8$

Put n=2.

$t_2=2(2+3)=2\times 5=10$

Put n=3.

$t_3=2(3+3)=2\times 6=12$

The first three terms of the series are 8, 10 and 12.

It is an arithmetic series. The first terms is 8 and the common difference is

$d=a_2-a_1=10-8=2$

The sum of n terms of an arithmetic series is

$S_n=\frac{n}{2}[2a+(n-1)d]$

$288=\frac{n}{2}[2(8)+(n-1)2]$

$288=\frac{2n}{2}[8+n-1]$

$288=n[n+7]$

$0=n^2+7n-288$

$0=n^2+19n-12n-288$

$0=n(n+19)-12(n+19)$

$0=(n+19)(n-12)$

Equate each factor equal to zero.

$n=-19,12$

The number of terms can not be negative, therefore the value of n must be 12.

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3 years ago

What is the Y-intercept of (y-3)=1/3(x+4)

Debora [2.8K]

Answer: 0,13/3

Step-by-step explanation: Hope this helps - Lily ^_^

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3 years ago