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3 years ago

3(x-1)=4(1+x)+5 what is the value of X

Mathematics

1 answer:

bogdanovich [222]3 years ago

7 0

3(x-1)=4(1+x)+5
3x-3=4+4x+5
3x-3=4x+9
-3x -3x
-3=x+9
-9 -9
-12=x

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A random sample of 64 bags of white cheddar popcorn weighed, on average, 5.23 ounces with a standard deviation of 0.24 ounce.

emmasim [6.3K]

Answer:

We conclude that cheddar popcorn weighed less than 5.5 ounces.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ =5.5 ounces

Sample mean, $\bar{x}$ = 5.23 ounces

Sample size, n = 64

Alpha, α = 0.05

Sample standard deviation, σ = 0.24 ounce.

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 5.5\text{ ounces}\\H_A: \mu < 5.5\text{ ounces}$

We use One-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{5.23 - 5.5}{\frac{0.24}{\sqrt{64}} } = -9$

Now, $z_{critical} \text{ at 0.05 level of significance } =-1.645$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, we conclude that cheddar popcorn weighed less than 5.5 ounces.

3 0

3 years ago

You are assigned 32 math exercises for homework. You complete 87.5 of these before dinner. How many do you have left to do after

VARVARA [1.3K]

Answer:

Step by step:

This is if the question is saying you completed 87.5% of the exercises. Otherwise, I don't know what it is asking.

87.5% of 32=28

32-28=4

6 0

2 years ago

T=3n-1 what is the 6th term

3241004551 [841]

Plug in 1 for n and solve, then plug in 2, and so on until you get to 3(6)-1=17

6 0

2 years ago

Read 2 more answers

What are the slope and one point on the graph of y-12=4/9 (x+7)???? PLEASE HELPPPPPPPPP

OLga [1]

Desmos helps me with graphing equations I reccomend using them.

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3 years ago

Pretty pls help me :3

lapo4ka [179]

Answer:

You can do 60 ÷ 6 = 10 groups.

Step-by-step explanation:

There are many ways to answer this and it's very simple.

6 and 10 is just one of the many factors of 60.

you can also do 60 ÷ 2 = 30 groups

3 0

3 years ago