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gtnhenbr [62]
3 years ago
7

12=y-3y what's the answer

Mathematics
2 answers:
nevsk [136]3 years ago
8 0
12=y-3y  Combine like terms
12=-2y  Divide
y=-6
Vitek1552 [10]3 years ago
7 0
<span>12=y-3y

the same    y - 3y = 12 

-2y = 12   divide by 2 both sides (2 is a common factor for 2 and 12)

- y = 6 (multiply with -1)

y = - 6

 </span>
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Animal y=5.4x+34<br> person y=12x+8.5 y is weight x is years. when is the weight the same
I am Lyosha [343]

Answer:

Step-by-step explanation:

Animal                 Person

y = 5.4x + 34       y = 12x + 8.5; where y - weight, x - years

looking for when weight (y) is the same, so we need

animal weight (y) = person weight (y)

            5.4x + 34 = 12x + 8.5

        <u>   -5.4x           -5.4x</u>

                      34 = 6.6x + 8.5

                  <u>  -8.5             -8.5</u>

                   25.5  = 6.6x     divide both sides by 6.6

                         x = 3.86  years

not sure if you need your answer in decimal or what, but you can adjust accordingly.

4 0
4 years ago
If 12 men can sew 180 shirts in 5 days how long will it take for 15 men to sew 180 shirts
erica [24]

Answer:

12 days

Step-by-step explanation:

5 0
3 years ago
The low temperature for the morning is -3.9°F. If the temperature rises to 24°F in the afternoon, what is the change in temperat
SVETLANKA909090 [29]

Answer:20.1 will be the temp

Step-by-step explanation:

All you do is add -3.9 and 24 together to get your answer

3 0
3 years ago
The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes and
Ksju [112]

Answer:

A) 1

B) 1

C) 0

Step-by-step explanation:

The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes and standard deviation 1.5 minutes. Suppose that a random sample of n = 49 customers is observed. Find the probability that the average time waiting in line for these customers is A) Less than 10 minutes B) Between 5 and 10 minutes C) Less than 6 minutes

We solve this question using the z score formula

z = (x-μ)/σ/√n, where

x is the raw score

μ is the population mean

σ is the population standard deviation.

n = number of random samples

A) Less than 10 minutes

x < 10

z = 10 - 8.2/ 1.5 / √49

z = 8.4

P-value from Z-Table:

P(x<10) = 1

B) Between 5 and 10 minutes

For x = 5 minutes

z = 5 - 8.2/ 1.5 / √49

z = -14.93333

P-value from Z-Table:

P(x = 5) = 0

For x = 10 minutes

z = 10 - 8.2/ 1.5 / √49

z = 8.4

P-value from Z-Table:

P(x = 10) = 1

The probability that the average time waiting in line for these customers is between 5 and 10 minutes

P(x = 10) - P(x = 5)

= 1 - 0

= 1

C) Less than 6 minutes

x < 6

z = 6 - 8.2/ 1.5 / √49

z = -10.26667

P-value from Z-Table:

P(x<6) = 0

6 0
3 years ago
One piece of wood has a rectangular bottom that is 30 cm long and 56 mm wide. The block is said to weigh 80 N. Calculate the pre
PilotLPTM [1.2K]

Answer:

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Step-by-step explanation:

Find area.

30x5.6=168

Convert to m^2

168cm^2=0.0168m^2

Use pressure formula to get answer

P=F/A

P=80/0.0168

P=4762 N/m^2

8 0
3 years ago
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