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2 years ago

I will mark as the brainliest answer

Mathematics

1 answer:

Hunter-Best [27]2 years ago

6 0

ratio for the first mix is 3:2 the ratio for the second mix is 4.5:3

Yes, since 3 times 1.5 is 4 and 2 times 1.5 is 3

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Can someone help me with this question

Fofino [41]

Answer B
I could be wrong
Explanation

6 0

2 years ago

Read 2 more answers

When would you use a table to display data?<br> When would you would use a graph to display data?

dexar [7]

A table would help to organize more information than a graph would. A graph would help more with numbers.

6 0

3 years ago

The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate level x and musc

ArbitrLikvidat [17]

Answer:

a) Sample correlation coefficient, r = 0.7411

bi) test statistic, t = 4.102

bii) P-value = 0.000736

Step-by-step explanation:

a) The formula for the sample correlation coefficient is given by the formula:

$r = \frac{S_{xy} }{\sqrt{S_{xx} S_{yy} }} }$

$S_{xx} = 2,648,130.357\\S_{yy} = 36.7376,\\S_{xy} = 7408.225$

$r = \frac{7408.225}{\sqrt{2648130.357*36.7376} }$

r = 0.7511

i) formula for the test statistic is given by the formula:

$t = \frac{r\sqrt{n-1} }{\sqrt{1 - r^{2} } }$

sample size, n = 4

$t = \frac{0.7511\sqrt{14-1} }{\sqrt{1 - 0.7511^{2} } }$

t = 4.102

ii) Degree of freedom, df = n -2

df = 14 -2

df = 12

The P-value is calculate from the degree of freedom and the test statistic using excel

P-value =(=TDIST(t,df,tail))

P-value = (=TDIST(4.1,12,1)

P-value = 0.000736

4 0

2 years ago

A baseball player went up to bat 500 times in a season. He hit the ball 150 times. Find the rate of balls hit to times at bat. E

dem82 [27]

150/500 = 75/250

Here's one example

4 0

2 years ago

Given h(x) = 5x -1, find h(1).

Norma-Jean [14]

H(1) = 4

h(1)= 5 x 1 -1
=5-1
=4
hope that helps <3

5 0

2 years ago