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3 years ago

6

(Multi Step Algebra)15x+12=19x-24what is the answer? help me please

2 answers:

solmaris [256]3 years ago

5 0

9

Step-by-step explanation:

15x+12=19x-24

15x-19x=-24-12

-4x=-36/÷(-4)

x=9

You first put all the x on one side and numbers on the other and be careful about + and - and then you divide by everything with the x so you have only the x left and you get the aswer.

ivann1987 [24]3 years ago

4 0

Answer:

x=9

Step-by-step explanation:

Learned it in math class, hope this helps:)

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4 years ago

The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. The sample standard

luda_lava [24]

Answer: $0.3849$

Step-by-step explanation:

Given : sample size : n= 51

sample standard deviation : s= 0.46

Significance level : $\alpha=1-0.95=0.05$

Using chi-square distribution, the critical values will be :

$\chi^2_{\alpha/2, n-1}=\chi_{0.025,\ 50}=71.4202$

$\chi^2_{1-\alpha/2, n-1}=\chi_{0.975,\ 50}=32.3574$

Confidence interval for population standard deviation ( $\sigma$ ) :

$\sqrt{\dfrac{s^2(n-1)}{\chi^2_{\alpha/2}}}$

Substitute all the values , we get

$\sqrt{\dfrac{(0.46)^2(50)}{71.4202}}$

Hence, the 95% two-sided confidence interval for σ : $0.3849$

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3 years ago

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PIT_PIT [208]

Answer

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Step-by-step explanation:

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4 years ago

4x + b = 2x + c, solve for x

Nikitich [7]

Answer:

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I hope I helped you^_^

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Answer:

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Step-by-step explanation:

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