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Elena-2011 [213]
2 years ago
8

Suppose you bought something

Mathematics
1 answer:
pav-90 [236]2 years ago
6 0

Subtract to find the amount of tax paid then divide the amount of tax paid by the price of the item bought.


7.61 - 6.95 = 0.66 (amount of tax paid)


0.66/6.95 = 0.0949 x 100 = 9.49 %

Answer: 9.49 % (round off as needed)

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Four out of nine dogs weigh less than 20 pounds.
vodka [1.7K]
The answer is 0.444 repeating.
5 0
3 years ago
Please help, and i will mark you BRAINLIEST <br> Solve: <br> A. 27<br> B. 343<br> C. 729<br> D. 216
TEA [102]

Answer:

729

Step-by-step explanation:

9 x 9 = 81

81 x 9 = 729

8 0
2 years ago
Use the following function rule to find f(5).<br> f(x) = 2x<br> f(5) =<br> Submit
nikitadnepr [17]

Step-by-step explanation:

f(5) = 2(5) = 10

hope this helps

8 0
3 years ago
Logb(x-1) + logb(x+2) = logb(8-2x)
Aleksandr [31]

Answer:

x=2

Step-by-step explanation:

log_x(y)+log_x(z)=log_x(yz), so logb(x-1) + logb(x+2)=logb((x-1)(x+2)). next subtract logb(8-2x) from both sides to get logb((x-1)(x+2))-logb(8-2x)=0. log_x(y) - log_x(z) = log_x(y/z). so now we have logb((x-1)(x+2)/(8-2x)). now you can put it into exponential form: (x-1)(x+2)/(8-2x)=b^0=1 now just solve for x:

(x-1)(x+2)= 8-2x, x^2 + x -2 = 8-2x, x^2 + 3x -10 = 0, (x+5)(x-2)=0 x=-5, x=2. plug both into the original equation to check which one is correct, since log_x(y) can't have a negative y, x=-5 doesnt work

7 0
2 years ago
A new surgery is successful 75% of the time. if the results of 10 such surgeries are randomly sampled, what is the probability t
valentinak56 [21]
\text{Binomial Distribution: } P(X = r) = \binom{n}{r}(p)^{r}(1 - p)^{n - r}
P(X < 9) = 1 - P(X = 9) - P(x = 10)

P(X = 9) = \binom{10}{9}(0.75)^{9}(0.25)
P(X = 10) = \binom{10}{10}(0.75)^{10}

P(X < 9) = 1 - \binom{10}{9}(0.75)^{9}(0.25) - \binom{10}{10}(0.75)^{10}
\approx 0.755974769...
4 0
3 years ago
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