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3 years ago

the temperature is dropping -3.75 degrees per hour. how many hours will the temperature drop for 4.5 hours

Mathematics

2 answers:

boyakko [2]3 years ago

5 0

Answer:

It will drop 16.875 degrees

Step-by-step explanation:

3.75 × 4 = 15

.5 × 3.75 1.875

Len [333]3 years ago

4 0

Answer:

-16.875

Step-by-step explanation:

This equation is quite simple and will only require one equation to solve. This is the equation,

-3.75×4.5=-16.875

The final answer is -16.875

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What is the distance between -3/7 and 2/8

NISA [10]

Answer:

$\frac{19}{28}$

Step-by-step explanation:

distance between -3/7 and 2/8

$= \frac{2}{8} - \bigg( - \frac{3}{7} \bigg) \\ \\ = \frac{2}{8} + \frac{3}{7} \\ \\ = \frac{2 \times 7}{8 \times 7} + \frac{3 \times 8}{7 \times 8} \\ \\ = \frac{14}{56} + \frac{24}{56} \\ \\ = \frac{14 + 24}{56} \\ \\ = \frac{38}{56} \\ \\ = \frac{19}{28}$

5 0

3 years ago

An English teacher has been teaching a sixth grade composition class for many years. He has the feeling that over the past sever

zhuklara [117]

We have here as $\mu$ as $\sigma$ , then the values are.

$\mu = 80$

s=8.7

For the resulting of the test by the teacher he had,

$\bar{X}=80,s=8.7$

With all of this dates to make the comparition we use the formula for Z values, that is

$z=\frac{\bar{x}-\mu}{\frac{\sigma}{ \sqrt{n}}}$

$z=\frac{80-85}{\frac{10.9}{43}}$

$z=-3.008 = 3.01$

We know moreover that $\alpha$ = 0.052.

To find $Z_{critic}$ we need to find $1-\alpha/2$

$1-\alpha/2=1-0.052/2 =0.974$

Searching in the table of Normal Distribution for Z, and making the lecture we find that z_{critic} is, 1.95.

5 0

3 years ago

What is the difference written in scientific notation? 0.00067 - 2.3 x 10^5

shepuryov [24]

0.00067=67X10^5 so

67X10^5-2.3X10^5

64.7X10^5 which can be expressed as:

6.47X10^6

(not sure if it matters to you or not, but technically we only had two significant figures so it should be rounded to 6.5X10^6)

5 0

4 years ago

Janice is 2 years younger than 3 times her cousins age. The Sum of their ages is greater than 14. What is the youngest her cousi

Mice21 [21]

The youngest her cousin can be is 4.
4(3)=12
12-2=10
10+4=14

6 0

4 years ago

Answer choices 1) 84° 2) 168° 3) 192° 4) 88° PLEASE HELP ASAP

almond37 [142]

Answer:

2) 168

Step-by-step explanation:

4 0

3 years ago