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3 years ago

I need to know this question pls help someone

Mathematics

2 answers:

OlgaM077 [116]3 years ago

6 0

Answer:

.05/.03

Step-by-step explanation:

a ratio of the prices

satela [25.4K]3 years ago

5 0

Answer:

Step-by-step explanation:

just divide them .5/.3

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Lisa treated her sisters to lunch their lunch cost $75 and the sales tax was 8% if Lisa left

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2 years ago

Which pair of numbers has a product of -24 and a sum of 10?

muminat

Answer:

-2;12

Step-by-step explanation:

it's too easy!

6 0

3 years ago

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4^4 + 1/2 step by step

expeople1 [14]

4^4 + 1/2
= (4×4×4×4) + 1/2
= 256 + 1/2
= 256 + 0.5
= 256.5

8 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

Completely factor the polynomial: x^2 - 13x + 12

posledela

(x-12)(x-1) is the answer.

7 0

3 years ago

Read 2 more answers

I need to know this question pls help someone​

I need to know this question pls help someone