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2 years ago

2 1/3⋅3 1/2 i need to KNOW NOW!!!!

Mathematics

1 answer:

Sveta_85 [38]2 years ago

4 0

Answer:

fraction form: 49/6

decimal from: 8.16

mixed form: 8 1/6

Step-by-step explanation:

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Don’t answer the question

mixer [17]

Answer is 72566.52

77000-5203=71797

3840-571=3269

71797+3269=75066

75066-2500=72566

72566+0.52=72566

8 0

3 years ago

Read 2 more answers

4. What is the correct ratio for sin A? A) 5/12 B) 12/13 C) 5/13 D) 13/12

maxonik [38]

Answer:

sin A = 12 /13

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin A = opp / hyp

sin A = 12 /13

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2 years ago

What is the value of x when 9x=45

kkurt [141]

Answer:

Step-by-step explanation:

45 divided by 9= 5

6 0

3 years ago

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Find the gradient of the line 3y + 2x = 1 how to guys

kykrilka [37]

Answer:

-2/3

Step-by-step explanation:

The gradient of a line is its slope. You can just convert the equation to slope-intercept form (y=mx+b where "m" is the gradient/slope):

3y + 2x = 1

3y = 1 - 2x

y = 1/3 - 2/3x

y = -2/3x + 1/3

So, as we can see, -2/3 is the gradient/slope of the line.

5 0

2 years ago

The weights of 67 randomly selected axles were found to have a variance of 3.85. Construct the 80% confidence interval for the p

VLD [36.1K]

Answer:

$3.13$

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 67

Variance = 3.85

We have to find 80% confidence interval for the population variance of the weights.

Degree of freedom = 67 - 1 = 66

Level of significance = 0.2

Chi square critical value for lower tail =

$\chi^2_{1-\frac{\alpha}{2}}= 51.770$

Chi square critical value for upper tail =

$\chi^2_{\frac{\alpha}{2}}= 81.085$

80% confidence interval:

$\dfrac{(n-1)S^2}{\chi^2_{\frac{\alpha}{2}}} < \sigma^2 < \dfrac{(n-1)S^2}{\chi^2_{1-\frac{\alpha}{2}}}$

Putting values, we get,

$=\dfrac{(67-1)3.85}{81.085} < \sigma^2 < \dfrac{(67-1)3.85}{51.770}\\\\=3.13$

Thus, (3.13,4.91) is the required 80% confidence interval for the population variance of the weights.

8 0

3 years ago