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3 years ago

(I Will give BRAINLIEST!!!) what is 4(2v - 3) - 5(-2v + 4)

Mathematics

2 answers:

Galina-37 [17]3 years ago

8 0

Answer:

18v-32

Step-by-step explanation:

shepuryov [24]3 years ago

8 0

Answer:

Here ya go

18v - 32

Step-by-step explanation:

Can i have brainliest

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2/9 multiplied by 9/5

r-ruslan [8.4K]

Answer:

2/5

Step-by-step explanation:

simplify by cross multiplying

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3 years ago

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Let y = 2. Solve for t: y = 3t - 4 A. B. c. D. -2 -2/3 2 3

Pavel [41]

Answer:

a - t = 2

Step-by-step explanation:

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3 years ago

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A business that offers and sells financial services to people is.. A deposit B depository institution C commercial bank D saving

butalik [34]

Answer:

Step-by-step explanation:

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3 years ago

I really need helpppppp I’m confused

Natasha2012 [34]

Add 35+ 72.5=107.5 that should give you your answer for c and the answer for d is acute because the triangle would have to be 360 to be Obtused and it's not a right triangle because you don't have a 90 degree angle

4 0

3 years ago

Listed below are speeds (mi/h) measured from southbound traffic on I-280 near Cupertino, California (based on data from SigAlert

adell [148]

Answer:

Option (B) is the correct answer to the following question.

Step-by-step explanation:

Step-1: We have to find the Mean of the series.

The series is Given in the question 62 61 61 57 61 54 59 58 59 69 60 67.

$Mean(\overline{x})=\frac{62+61+61+57+61+54+59+58+59+69+60+67}{12}$ $= 60.67$

Step-2: We have to find the Standard Deviation.

Let Standard Deviation be x.

Formula of Standard Deviation is: $s= \sqrt{\frac{\sum(x_{i}+\overline{x})}{n-1}}$

Put value in formula of Standard Deviation,

$s= \sqrt{\frac{(62+60.67)^{2}+(61+60.67)^{2}+(61+60.67)^{2}+(57+60.67)^{2}+....(67+60.67)^{2}}{n-1}}$ = 40.75

Step-3: Then, we have to find the critical value by chi-square.

$X_{1-\alpha/2}^{2}=3.82$

$X_{1-\alpha/2}^{2}=21.92$

Then, find the confidence interval which is 95%.

$\sqrt{\frac{(n-1).s^2}{X_{\alpha/2}^{2}} } = \sqrt{\frac{12-1}{21.92}.(4.075)^2 }\approx2.8868 \\ i.e 2.9$

$\sqrt{\frac{(n-1).s^2}{X_{\alpha/2}^{2}} } = \sqrt{\frac{12-1}{3.816}.(4.075)^2 }\approx6.9188 \\ i.e 6.9$

5 0

3 years ago