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Sergio039 [100]
2 years ago
7

How do you do this question?

Mathematics
1 answer:
VikaD [51]2 years ago
8 0

Answer:

the answer is 4 of it will help you

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Help me yall pls I need to graduate
dem82 [27]
10/1 = 43.5/x 
cross multiply

10x=43.5
divide by 10 on each side

x = 4.35

it will take 4.35 minutes
5 0
3 years ago
SOMEONE HELP ME BRO I NEED DA ANSWER
cupoosta [38]

I think that would be 0.202. ( Sorry if i'm wrong )

Hope helps?-aparri

6 0
3 years ago
Shelly is going shopping at the mall to buy 3 pairs of shoes. She has a coupon for $2 off perpair of shoe after buying the first
aleksklad [387]

Answer:

$42

Step-by-step explanation:

If you want to check, simply take the values I calculated, multiply them by 3 and subtract them by 2 for the second and third pair, they will add up to the values that Shelly is willing to purchase, excluding tax.

8 0
3 years ago
Evaluate the expression if a = 4, b = 9, and c = 1.
uranmaximum [27]

Answer:

Given - a = 4

b = 9

c = 1

To find - Value of equation

Solution -

3b ÷ c^1 - a

Putting the value of a,b and c in the equation

3(9) ÷ (1)^1 - 4

27 ÷ 1 - 4

27 ÷ (-3)

27 × (1 /(-3)

27/(-3)

(-9)

3 0
3 years ago
Read 2 more answers
A person read that the average number of hours an adult sleeps on Friday night to Saturday morning was 7.2 hours. The
Elan Coil [88]

Calculate the value of z and its probability, since with this we can know how likely it is that this will happen.

We have that the mean (m) is equal to 8.3, the standard deviation (sd) 1.2 and the sample size (n) = 15

They ask us for P (x =7.2)

For this, the first thing is to calculate z, which is given by the following equation:

z = (x - m) / (sd / (n ^ 1/2))

We have all these values, replacing we have:

z = (7.2 - 8.3) / (1.2 / (15 ^ (1/2))

z = -3.55

With the normal distribution table (attached), we have that at that value the approximate probability is:

P (z = -3.55) = 0.0001

The probability is 0.01 %

This affirms that the students do not sleep what the study says because the probability of this happening according to the survey is almost nil.

7 0
3 years ago
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