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o-na [289]
3 years ago
13

-3v=195 -45 45 65 -65 i think it is -45

Mathematics
2 answers:
mylen [45]3 years ago
8 0

Answer:

-65 is your answer

Step-by-step explanation:

What you do is you divide -3 to both sides.

195/-3=-65.

-65 is your answer.

artcher [175]3 years ago
6 0

195/-3=-65 that is how I got my answer ladies and gents

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Y/5+7=9 solve the problem by using addition or subtraction and multiply and divide
Elis [28]

Answer:

y=10

Step-by-step explanation:

y/5+7=9

y/5=9-7

y/5=2

y=2*5

y=10

3 0
2 years ago
College students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. If the amount of sleep is normall
Soloha48 [4]

Answer:

4.27%

Step-by-step explanation:

We have been given that college students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. We are asked to find the probability of college students that sleep for more than 9.6 hours.

We will use z-score formula to solve our given problem.

z=\frac{x-\mu}{\sigma}

z = z-score,

x = Random sample score,

\mu = Mean,

\sigma = Standard deviation.

Before substituting our given values in z-score formula, we need to convert 35 minutes to hours.

35\text{ min}=0.58\text{ Hour}

z=\frac{9.6-8.6}{0.58}

z=\frac{1}{0.58}

z=1.72

Now, we need to find P(z>1.72).

Using formula P(z>a)=1-P(z, we will get:

P(z>1.72)=1-P(z

Using normal distribution table, we will get:

P(z>1.72)=1-0.95728

P(z>1.72)=0.04272

0.04272\times 100\%=4.272\%

Therefore, 4.27% of college students sleep for more than 9.6 hours.

7 0
3 years ago
Ms. Reynolds has a system of 10 sprinklers that water her entire lawn. The sprinklers run one at a time, and each runs for the s
Flauer [41]
You are told that sprinklers run for the same amount of time. lets refer to this time as T.
you are told that 4 sprinkles run one at a time for 50 minutes total. that means that T should be 50/4 = 12.5 minutes = 12 minutes and 30 seconds
3 0
3 years ago
.Calculate the time in which ₦1,500 will amount to ₦9,000 at 20% per annum.
katovenus [111]

Answer:

30 yrs

Step-by-step explanation:

SI = PRT/100

T = I × 100/PR

= 9000×100/1500×20

= 900000/30000

= 30 yrs

3 0
2 years ago
-3 &lt; 5c + 7 &lt; 22<br> algebra
Alexus [3.1K]

Answer:=

Solution: -2<c<3

Interval Notation: (-2,3)

Step-by-step explanation:

-3<5c+7<22

-3<5c+7  :  c>-2

5c+7<22 : c<3

combine the intervals

c>-2 and c<3

-2<c<3

8 0
3 years ago
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