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tresset_1
1 month ago
15

A student needs to study 313 pages of math textbook for an exam he has in 14 days. If the first day he studied 35 pages and each

following day he studied two pages less than the previous day, how mane pages will he have to handle during the day before rhe exam?​
Mathematics
1 answer:
tester [12.3K]1 month ago
8 0

Answer:

22.2

Step-by-step explanation:

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There are cars and motorcycles in a campus parking lot. The parking attendant noticed there are a total of 294 tires and a total
babunello [11817]
Esto no puede ser correcto ya que si hay 60 coches, eso implica 240 ruedas de coches, y 25 bicicletas significan 50 ruedas de bicicletas, lo que suma un total de 290 ruedas. Si hubiera 1 coche adicional, habría 86 vehículos y 294 ruedas, o si se agregaran 2 bicicletas más, eso resultaría en 87 vehículos y 294 ruedas.
4 0
1 month ago
Scores on an exam follow an approximately normal distribution with a mean of 76.4 and a standard deviation of 6.1 points. what i
AnnZ [12381]
The highest 5% of scores corresponds to the 95th percentile, meaning the cutoff score k is defined as

\mathbb P(X

When transformed into the standard normal distribution,

\mathbb P(X

A cumulative probability of 95% corresponds to a z-score of approximately k^*=1.6449, indicating that the cutoff score is likely around

1.6449=\dfrac{k-76.4}{6.1}\implies k\approx86.4
5 0
2 months ago
A health department spokesman speaking on a local radio station has advocated that parents download a particular app on their ph
AnnZ [12381]

Response:

Option E is the right choice.

A connection seems evident between the app and the reduction of daycare-related illnesses.

Step-by-step breakdown:

Research involved 1200 randomly chosen parents, revealing that the kids of parents who utilized the app had an average of 10 fewer cases of daycare illnesses compared to those whose parents didn’t download it during the study duration.

Reviewing the options individually

a. Since using the app appears to lower child sickness, its effectiveness should extend to decreasing child neglect as well.

The study indicates a reduction in daycare-related illnesses for those using the app but does not address neglect, making this conclusion incorrect.

b. Using the app will ensure daycare employees do not transmit germs.

The research didn't examine how the app functions, nor whether it stops daycare workers from transmitting germs. Thus, this conclusion lacks accuracy.

c. The analysis was performed as an experiment, not an observational study.

In reality, it was primarily observational. Such studies document results without manipulation by the researchers.

d. The sample size of the study was inadequate for drawing conclusions.

A pool of 1200 is sufficiently large to reflect the wider population’s characteristics. Therefore, this assertion is also incorrect.

e. A link seems to exist between the app and reduced transmission of daycare illnesses.

From the provided details, it’s clear that the findings of this study depict a link between using the app and a marked decrease in daycare-related illnesses among children of those who have downloaded it. Hence, the app likely plays a role in lowering the risk of such illnesses in their children.

Hope this is helpful!

6 0
2 months ago
The sum of 48 and itself its half and half of the hal is added to 18​
babunello [11817]

Answer:

150

Step-by-step explanation:

We perform addition.

a) The total of 48 added to itself

= 48 + 48 = 96

b) Its half plus half of the half

= 96 + (1/2 × 48) + (1/2 × (1/2 × 48)

= 96 + 24 + (1/2 × 24)

= 96 + 24 + 12

= 132

c) plus 18

= 132 + 18

= 150

Thus, adding 48 to itself, its half, and half of that to 18 results in 150.

8 0
2 months ago
Triangle L M N is cut by line segment O P. Line segment O P goes from side M L to side M N. The length of O L is 14, the length
babunello [11817]
The value of y that would ensure OP runs parallel to LN is 36. Step-by-step explanation: This pertains to the concept of similar triangles. The diagram based on the provided data is attached. Given: The length of OL is 14, OM is 28, MP is y, and PN measures 18. The total length of MN is the combination of MP and PN, expressed as y + 18. The length ML is calculated as MO plus OL, giving us 28 + 14 = 42. For OP to be parallel to LN, the ratio MO to ML must equal MP to PN, formulated as MO/ML = 28/42 and MP/PN= y/(y+18). By equating both ratios 28/42 = y/(y+18), it simplifies to 42y = 28(y + 18). Solving for y leads to 42y being equal to 28y + 504, resulting in 14y = 504. Thus, y equals 504/14 = 36.
8 0
1 month ago
Read 2 more answers
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