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2 years ago

If the sales tax rate is 7% in Rhode Island, then how much would you pay there for a pair of shoes that cost $40.00?

Mathematics

2 answers:

MrRissso [65]2 years ago

8 0

A. 2.80 is the answer

IRINA_888 [86]2 years ago

6 0

40.00x0.07=2.80

You would pay $42.80 total for the shoes.

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The cost of admission to the bayton zoo is 10.50 for each senior citizen $15.75 for each adult , and 8.50 for each child

alex41 [277]

Yes, and what is the problem?

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3 years ago

Simplify: cos2x-cos4 all over sin2x + sin 4x

GrogVix [38]

Answer:

$\frac{\cos\left(2x\right)-\cos\left(4x\right)}{\sin\left(2x\right)+\sin\left(4x\right)}=\tan\left(x\right)$

Step-by-step explanation:

$\frac{\cos\left(2x\right)-\cos\left(4x\right)}{\sin\left(2x\right)+\sin\left(4x\right)}$

Apply formula:

$\cos\left(A\right)-\cos\left(B\right)=-2\cdot\sin\left(\frac{A+B}{2}\right)\cdot\sin\left(\frac{A-B}{2}\right)$ and

$\sin\left(A\right)+\sin\left(B\right)=2\cdot\sin\left(\frac{A+B}{2}\right)\cdot\sin\left(\frac{A-B}{2}\right)$

We get:

$=\frac{-2\cdot\sin\left(\frac{2x+4x}{2}\right)\cdot\sin\left(\frac{2x-4x}{2}\right)}{2\cdot\sin\left(\frac{2x+4x}{2}\right)\cdot\cos\left(\frac{2x-4x}{2}\right)}$

$=\frac{-\sin\left(\frac{2x-4x}{2}\right)}{\cos\left(\frac{2x-4x}{2}\right)}$

$=\frac{-\sin\left(\frac{-2x}{2}\right)}{\cos\left(\frac{-2x}{2}\right)}$

$=\frac{-\sin\left(-x\right)}{\cos\left(-x\right)}$

$=\frac{-\cdot-\sin\left(x\right)}{\cos\left(x\right)}$

$=\frac{\sin\left(x\right)}{\cos\left(x\right)}$

$=\tan\left(x\right)$

Hence final answer is

$\frac{\cos\left(2x\right)-\cos\left(4x\right)}{\sin\left(2x\right)+\sin\left(4x\right)}=\tan\left(x\right)$

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2 years ago

Express each of the following decimals as a percentage<br> 1.35<br> solution for class 7

Semmy [17]

Answer:

135%

Step-by-step explanation:

To represent a decimal to percentage, multiply by 100

1.35 x 100 = 135

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

6 0

2 years ago

Read 2 more answers

What is the value of this expression? 4/15+3/5−2/3 Quick

VMariaS [17]

Answer:

I think that would be 1/5

Explanation:

Hope this helps!

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2 years ago

Robert earns $300 every week. What equation shows the relationship between salary per week (s), number of weeks worked (w), and

Brut [27]

T= 300w is the answer.

8 0

3 years ago