9 x 10 9 or 3 x 10 -4

Mathematics

1 answer:

Mademuasel [1]3 years ago

6 0

The first one is 810

The second is -120

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A manufacturer claims that its cleaning product is best because over half of the cleaning services surveyed used the product. Wh

balu736 [363]

Answer:

D. Only one cleaning product was asked about in the survey.

Any given company can use more than one cleaning product or even use a combination of different cleaning products. The question was not specific enough, since it should have probably asked which cleaning products are used and which ones are used more frequently.

Step-by-step explanation:

the other options are wrong because:

A. Only 50 cleaning services were surveyed. ⇒ This actually would increase the validity of the claim because it satisfies the the condition for a valid confidence interval [np and n(1 - p) are larger than 10]-
B. Cleaning services were selected at random. ⇒ This actually would increase the validity of the claim.
C. A well-known company conducted the survey. ⇒ This actually would increase the validity of the claim.

8 0

2 years ago

A line the contains the point (-3,6) and (5,10)

wlad13 [49]

Ok so for slope it's difference in y dividing by the difference of x. The difference of y is 10 - 6 which is 4, and the change in x is 5 - (-3) which is 8. Dividing 4 by 8 gets us 1/2. So the slope is 1/2. Slope intercept form would be y = mx + b, and the slope is 1/2 so it'd be y = (1/2)x + b. Plug in a point and you get b = 15/2. So the final slope intercept form would be y = (1/2)x + 15/2. For point slope form just put in a point and slope and you get y - 6 = (1/2) × (x + 3). Standard form would have to be arranged from slope intercept. So multiplying 2 to the slope intercept form we get 2y = x + 15. Subtracting x we get -x + 2y = 15. In standard form we don't want x to be negative so just multiply by negative one and we get x - 2y = -15.