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Advocard [28]
3 years ago
5

The tax rate is 3.9% What is the tax on 42$? Round to the nearest hundredth

Mathematics
1 answer:
Leya [2.2K]3 years ago
5 0
The answer is 45.9 you Add it
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if you add the digits in a two-digit number and multiply the sum by 7, you get the original number. If you reverse the digits in
ANTONII [103]
Let m the tens digit and n the ones
the Original number is 10m+n
7(m+n) =10m+n
7m+7n=10m+n
6n=3m

Reversing the number 10n+m
10n+m=18+n+m
9n=18
n=2

6n=3m
6(2)=3m
3m=12
m=4
the number is 10m+n=10(4)+2=42
4 0
3 years ago
Please help me out with this question please!!!
bixtya [17]

Answer:

3 days

Step-by-step explanation:

company A would have the equation 50x+40 =y  and company B would be 30x + 100 =y. we're tying to find the days that these cost the same so you would do 50x+40 = 30+100. When you isolate x you get 3

7 0
2 years ago
What is the difference between the 5th multiple of 7 and 3rd multiple of 2 ?
lesya692 [45]

Answer:

<h3>5th Multiple of 7 = 35</h3><h3>3rd Multiple of 2 = 6</h3><h2>The Difference</h2>

=> 35-6

<h2>=> 29</h2>
4 0
2 years ago
Simplify the expression: 5 x t x 5
vodka [1.7K]
I think it would be 25t but correct me if i’m wrong
8 0
3 years ago
Read 2 more answers
SOMEONE PLEASE JUST ANSWER THIS FOR BRAINLIEST!!!
stiv31 [10]

ANSWER

a=-2, b=3

EXPLANATION

The given equation is

(a {x}^{2})( - 6 {x}^{b}  ) = 12 {x}^{5}

Recall that:

{a}^{m}  \times  {a}^{n}  =  {a}^{m + n}

We simplify the left hand side to get:

- 6a {x}^{2 + b}  = 12 {x}^{5}

For this equation to be true, we must have:

-6a=12 and 2+b=5

This implies that,

a=-2 and b=3

6 0
3 years ago
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