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Marizza181 [45]
2 years ago
10

-3(5x-10)=[?]x + [ ]

Mathematics
1 answer:
Setler [38]2 years ago
7 0

Answer:

-15x + 30

Step-by-step explanation:

-3(5x -10)

-15x + 30

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If yall help me with all the answers ill give you 32 points. Ik this is easy but I'm too lazy to do this. someone help me, pleas
Anna007 [38]

Answer:

100-both

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Step-by-step explanation:

8 0
3 years ago
The LB Company has long manufactured a light bulb with an average life of 5400 hours. Company researchers have recently develope
elena55 [62]
<h2><u>Answer with explanation</u>:</h2>

Let \mu be the average life of light bulbs.

As per given , we have

Null hypothesis : H_0 : \mu =5400

Alternative hypothesis : H_a : \mu >5400

Since H_a is right-tailed and population standard deviation is also known, so we perform right-tailed z-test.

Formula for Test statistic : z=\dfrac{\overlien{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

where, n= sample size

\overline{x}= sample mean

\mu= Population mean

\sigma=population standard deviation

For n=95,\ \overline{x}=5483\ \&\ \sigma=500, we have

z=\dfrac{5483-5400}{\dfrac{500}{\sqrt{95}}}=1.61796786124\approx1.6180

Using z-value table , Critical one-tailed test value for 0.06 significance level :

z_{0.06}=1.5548

 Decision : Since critical z value (1.5548) < test statistic (1.6180), so we reject the null hypothesis .

[We reject the null hypothesis when critical value is less than the test statistic value .]

Conclusion : We have enough evidence at 0.06 significance level to support the claim that the new filament yields a longer bulb life

8 0
3 years ago
I need help asap!!!!!!!!!!!
Reil [10]
Ur answer will be 8% and do u need me to explain 
3 0
3 years ago
Read 2 more answers
What’s the slope between (4,1)( 0,3)
adoni [48]

y2 - y1 \div x2 - x1 \\ 3 - 1 \div 0 - 4 \\ 2 \div  - 4 \\  - 2
4 0
3 years ago
Read 2 more answers
Andrew rents bowling shoes for $4. He bowls 2 games. Andrew spent a total of $22. How much was the cost of each game, b? Complet
Aneli [31]

Answer:

2b + 4 = 22

b= 9, the cost of each game is $9

Step-by-step explanation:

8 0
3 years ago
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