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Ket [755]
3 years ago
8

Ayva earned a 3% commission on a sale of

Mathematics
1 answer:
zhenek [66]3 years ago
7 0
Sarah has the greatest commission
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Expand and simplify this equation plz, 4(3x+5) - 5(8x+2)
omeli [17]

4(3x + 5) - 5(8x + 2) \\ 12x + 20 - 40x - 10 \\ 12 x - 40x + 20 - 10 \\  - 28x + 10

7 0
2 years ago
(1 pt) In a study of red/green color blindness, 950 men and 2050 women are randomly selected and tested. Among the men, 89 have
Ivahew [28]

Answer: (0.066,0.116)

Step-by-step explanation:

The confidence interval for proportion is given by :-

p_1-p_2\pm z_{\alpha/2}\sqrt{\dfrac{p_1(1-p_1)}{n_1}+\dfrac{p_2(1-p_2)}{n_2}}

Given : The proportion of men have red/green color blindness = p_1=\dfrac{89}{950}\approx0.094

The proportion of women have red/green color blindness = p_2=\dfrac{6}{2050}\approx0.003

Significance level : \alpha=1-0.99=0.01

Critical value : z_{\alpha/2}=z_{0.005}=\pm2.576

Now, the 99% confidence interval for the difference between the color blindness rates of men and women will be:-

(0.094-0.003)\pm (2.576)\sqrt{\dfrac{0.094(1-0.094)}{950}+\dfrac{0.003(1-0.003)}{2050}}\approx0.091\pm 0.025\\\\=(0.09-0.025,0.09+0.025)=(0.066,\ 0.116)

Hence, the 99% confidence interval for the difference between the color blindness rates of men and women= (0.066,0.116)

4 0
4 years ago
Your class is holding a bake sale to raise money for a field trip. If you are selling cakes for $3.25, what is the lowest you ne
Inessa [10]

Answer:

there needs to be at least 77 cakes sold

Step-by-step explanation:

let 'c' = # cakes sold

3.25c ≥ 250

c ≥ 250÷3.25

c ≥ 76.9

8 0
3 years ago
Domain and range and function or not<br><br>​
aksik [14]

Answer:

Domain: -2,0,1,3,4

Range: 2,3

Yes its a function

Step-by-step explanation:

4 0
3 years ago
What are possible coordinates of point F if triangle DEF is<br> congruent to triangle ABC?
Lemur [1.5K]

Answer:

(-1, 4)

Step-by-step explanation:

Point B is 5 units below point A, and point E is 5 units above point D: AB = ED. This means that BC will be equal to EF. B and C are 7 units apart, so 7 units left from E is (-1, 4).

Hope this helps!

8 0
3 years ago
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