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2 years ago

Which of the following is an arithmetic sequence?

Mathematics

1 answer:

Lemur [1.5K]2 years ago

7 0

Answer:

either D or A i’m not sure

explanation:

your multiplying by 4 each time.
4 x 4 = 16
16 x 4 = 64
64 x 4 = 256
thats for D

your adding 4 each time
19-15=4
15-11=4
11-7=4
7-3=4
that’s for A

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Work out the smallest integer value of x that satisfies the inequality 4x-3>22. ( I have not learned this question in maths )

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x>6.35

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3 years ago

Write an equation<br> in slope y-intercept form A(2,6),m=0

REY [17]

Solve for b:

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2 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

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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:

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

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

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ii) Degree of freedom, df = n -2

df = 14 -2

df = 12

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2 years ago

What is the square root of 5x^2 = 300

vesna_86 [32]

So, values of x are: $x=2\sqrt{15},\,\,x=-2\sqrt{15}$

Step-by-step explanation:

We need to find the square root of 5x^2 = 300

Writing in mathematical form:

$5x^2=300$

Divide both sides by 5

$\frac{5x^2}{5}=\frac{300}{5}$

$x^2=60$

Taking square root on both sides

$\sqrt{x^2}=\sqrt{60}$

$x=\pm (\sqrt{2\times 2\times 3\times 5})$

$x=\pm (\sqrt{2^2 \times 3\times 5})$

$x=\pm (2\sqrt{3\times 5})$

$x=\pm (2\sqrt{15})$

$x=2\sqrt{15},\,\,x=-2\sqrt{15}$

So, values of x are: $x=2\sqrt{15},\,\,x=-2\sqrt{15}$

Keywords: Square root

Learn more about square root at:

#learnwithBrainly

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3 years ago

A customer in a store had two 50% off coupons. She tried to buy a purse with them, gave them to the cashier

antoniya [11.8K]

Answer:

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Step-by-step explanation:

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2 years ago

Which of the following is an arithmetic sequence?​

Which of the following is an arithmetic sequence?