2 years ago

Infinitely many solutions

Mathematics

1 answer:

nika2105 [10]2 years ago

3 0

Answer:

x=0

Step-by-step explanation:

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What is x? 4x-7= -3x

Ede4ka [16]

X=7
distribute the equation

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3 years ago

Read 2 more answers

HELP!!!

Hoochie [10]

Answer:

AT = 8 $\sqrt{2}$

Step-by-step explanation:

Using the sine ratio in the right triangle

and sin45° = $\frac{1}{\sqrt{2} }$

sin45° = $\frac{opposite}{hypotenuse}$ = $\frac{AB}{AT}$ = $\frac{8}{AT}$

Multiply both sides by AT

AT × sin45° = 8, that is

AT × $\frac{1}{\sqrt{2} }$ = 8

Multiply both sides by $\sqrt{2}$

AT = 8 $\sqrt{2}$

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3 years ago

California is 0.5 minutes. To investigate the validity of this claim a random sample of 6 earthquakes were taken and the sample

iren [92.7K]

Answer:

98% confidence interval for the mean is

(0.72689 , 1.57311)

Step-by-step explanation:

Given random sample size 'n' = 6

Given sample mean x⁻ = 1.15

Given sample standard deviation 'S' = 0.308

98% confidence interval for the mean is determined by

$(x^{-} - t_{\frac{\alpha }{2} } \frac{S}{\sqrt{n} } , x^{-} + t_{\frac{\alpha }{2} } \frac{S}{\sqrt{n} } )$

Degrees of freedom ν =n-1 =6-1 =5

Critical value : -

$t_{\frac{0.02}{2} } = t_{0.01} = 3.365$

98% confidence interval for the mean is determined by

$(1.15 - 3.365\frac{0.308}{\sqrt{6} } , 1.15+ 3.365\frac{0.308}{\sqrt{6} } )$

On calculation , we get

( 1.15 - 0.42311 , 1.15+ 0.42311)

(0.72689 , 1.57311)

Final answer:-

98% confidence interval for the mean is

(0.72689 , 1.57311)

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3 years ago