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guapka [62]
3 years ago
6

What are the following solutions to 2x^2-8x-90

Mathematics
1 answer:
Nostrana [21]3 years ago
7 0
You're 2 solutions are 

(9,0)(-5,0)

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A grocery delivery service has 22 members. Each member pays monthly dues of $12.80
slava [35]

Answer:

C

Step-by-step explanation:

If 9 members paid on the first day, this means they did not pay on the third day

The remaining people (everyone but the 9) paid on the third day

Therefore we must subtract to find out how many members paid on the third day

22 - 9 = 13

Each of the 13 members paid $12.80 which means we must multiply

13 × 12.80 = 166.40

In total, the grocery store collected $166.40 on the third day of the month

3 0
3 years ago
Read 2 more answers
: A personal computer manufacturer buys 36% of its chips from Japan and the rest from the United St...
meriva

Answer: 0.9862

Step-by-step explanation:

Given : The probability that the chips belongs to Japan: P(J)= 0.36

The probability that the chips belongs to United States : P(U)= 1-0.36=0.64

The proportion of Japanese chips are defective : P(D|J)=0.017

The proportion of American chips are defective : P(D|U)=0.012

Using law of total probability , we have

P(D)=P(D|J)\times P(J)+P(D|U)\times P(U)\\\\\Rightarrow\ P(D)=0.017\times0.36+0.012\times0.64=0.0138

Thus , the probability that chip is defective = 0.0138

Then , the probability that a chip is defect-free=1-0.0138=0.9862

3 0
3 years ago
Afla de cate ori se cuprinde 8 in fiecare dintre numerele 8 ,80,72si 96
Butoxors [25]
I don't understand the language
7 0
3 years ago
The circumference of a circle is 6.28 yards. What is the circles area
Nuetrik [128]

Answer:

Step-by-step explanation:

circumference=2πr=6.28

r=6.28/2π=3.14/π=3.14/3.14=1

area=πr^2=π×1²=π=3.14 units²

8 0
3 years ago
Read 2 more answers
Mike rides his horse with a constant speed of 14 km/h. How far can he travel in 3 1/2 hours?
Andreyy89

Answer:

126 km/h

Step-by-step explanation:

Sorry if I'm wrong:/

8 0
3 years ago
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