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Sphinxa [80]
4 years ago
12

a pack of cinnamon-scented pencils sells for 5.00 dollars what is the sales tax rate if the total cost of the pencils is 5.15

Mathematics
1 answer:
Luden [163]4 years ago
6 0

calculate the percentage increase,work out the difference (increase) between the two numbers you are comparing. Then divide the increase by the original number and multiply the answer by 100.  

520-500 = 20

20÷500 =.04

.04 ×100= 4%

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Find<br> the<br> Inverse<br> y = x+10/7
Alona [7]

Answer:

x - \frac{10}{7}

Step-by-step explanation:

y = x + 10/7

x = y + 10/7

x = y + 10/7

x - 10/7 = y

y = x - 10/7

x - \frac{10}{7}

3 0
4 years ago
I’m confused on this answer anyone know it?
slamgirl [31]

Answer:

y=\frac{26}{7},\:x=-\frac{15}{7}

Step-by-step explanation:

\begin{bmatrix}4x+5y=10\\ -2x+y=8\end{bmatrix}\\\\\begin{bmatrix}-2\cdot \frac{10-5y}{4}+y=8\end{bmatrix}\\\\

-5+\frac{7y}{2}=8\\\\\mathrm{Multiply\:both\:sides\:by\:}2\\-5\cdot \:2+\frac{7y}{2}\cdot \:2=8\cdot \:2\\-10+7y=16\\y=\frac{26}{7}\\

\mathrm{For\:}x=\frac{10-5y}{4}\\\mathrm{Subsititute\:}y=\frac{26}{7}\\x=\frac{10-5\cdot \frac{26}{7}}{4}\\\\

x=-\frac{15}{7}\\

7 0
3 years ago
Translate radical expressions into expressions with rational exponents, and vice versa. Simplify numerical
dmitriy555 [2]

Answer:

a) (\sqrt[n]{x}) the n will be 5 the x will be (-32/243)^2.

b) written the same as a. except the c will replace the n and x will be (2y)^b.

c) the answer will be 0.4^3.

d) the answer would be (st)^v/u.

Hope this helps!

Brainliest?

3 0
3 years ago
The multiples of 2 form a sequence as follows: 2, 4, 6, 8, 10, 12, 14, 16, ... Describe the sequence you see. What about the mul
labwork [276]

Given:

The multiples of 2 form a sequence as follows: 2, 4, 6, 8, 10, 12, 14, 16, ...

To find:

Description of the sequence you see. What about the multiples of three? Four? Five?

Solution:

The multiples of 2 form a sequence as follows:

2, 4, 6, 8, 10, 12, 14, 16, ...

It is defined as a_n=2n, where n is a natural number. It represents all positive even numbers.

Multiples of 3, 4 and 5 form the respective sequences:

a_n=3n, i.e., 3, 6, 9, 12, 15, 18, 21, 24,...

a_n=4n, i.e., 4, 8, 12, 16, 20, 24, 28, 32...

a_n=5n, i.e., 5, 10, 15, 20, 25, 30, 35, 40...

3 0
3 years ago
Midpoint of the line segment (-1,6), (-6,5)
zepelin [54]
The answer is:

(-7/2 , 11/2)

5 0
3 years ago
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