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valentina_108 [34]
3 years ago
11

7. The sweater cost $35, and the tax rate was 8%. How much do you have to pay in tax?

Mathematics
1 answer:
RUDIKE [14]3 years ago
3 0

Answer:

so in tax you pay a extra $2.80 so the total price of the sweater is $37.80.

Mikey will save $37.25

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A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They want to construct a 85% confidence in
andreev551 [17]

Answer: 547

Step-by-step explanation: The margin of error formulae is given below as

Margin of error = critical value ×(σ/√n)

Where σ = standard deviation and n is the sample size.

From our question, margin of error = 0.08

Variance is 1.691,

hence σ = √variance = √1.691

= 1.3.

We will be using a z test for our critical value this is because a soft drink manufacturer will always produce drinks more than 30 in numbers.

The critical value for a 85% confidence interval is 1.44.

Hence critical value is 1.44.

By substituting the parameters, we have that

0.08 = 1.44 × 1.3/ √n

0.08 = 1.873/ √n

By cross multiplying

0.08 × √n = 1.873

√n = 1.873/ 0.08

√n = 23.41

n = (23.41)²

n = 547.

7 0
3 years ago
Aidan writes numbers on his ten fingers as 5, 7, 9, 11, 13, 15, 16, 19, 22, 23. What is the probability of picking an even numbe
faltersainse [42]
It would be 2/10, or 1/5, since two out of the 10 numbers are even. 2/10 simplifies to 1/5, since there is 1 for every 5 numbers.

We could turn this into a percentage by dividing 1 by 5, which gives us 0.2. Then we can multiply by 100 to get 20.

So, our probability of choosing an even number is:
2/10
OR
1/5
OR
20%

Hope I could help!
6 0
3 years ago
Read 2 more answers
The factorization of x2 + 3x – 4 is modeled with algebra
meriva

Option C: (x+4) and (x-1) are the factors of the equation

Explanation:

Given that the equation is x^{2} +3x-4

We need to determine the factors of the equation.

Splitting the middle term, we get,

x^{2} +4x-x-4

Grouping the terms, we have,

x(x+4)-1(x+4)

Let us factor out the term (x+4), we have,

(x+4)(x-1)

Thus, the factors of the equation are (x+4) and (x-1)

Hence, Option C is the correct answer.

4 0
3 years ago
Christina goes to the market with $50. She buys one papaya for $8 and spends the rest of the money on bananas. Each banana costs
velikii [3]
Christina can buy 7 bananas because one papaya is 8 dollars and then you do 50-8=42 and then 42/6 which equals 7.

Billy can only buy one pair of jeans. The reason is that jeans are 35 bucks and he has already spent  55 dollars on a hat and jacket and that leaves him with 35 bucks left so 35-35 equals zero!
4 0
3 years ago
A 150 ft string attached to a kite makes a 60 degree angle with the ground. What is the height of the kite to the nearest tenth?
liraira [26]

Check the picture below.

5 0
3 years ago
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