2 years ago

Find the common difference of the arithmetic sequence. 9, 13, 17, 21, . ..

Mathematics

1 answer:

sesenic [268]2 years ago

7 0

Step-by-step explanation:

4 is the common difference

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2x - 8 X-3 4. What is the value of x? (a) 3 (c) 9 (b) 15 (d) 30 5 3

azamat

I believe it’s 9 but unsure sorry

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2 years ago

Is the square root of 225 a rational number?

MArishka [77]

Step-by-step explanation:

$\text{The principal square root}:\\\\\sqrt{a}=b\iff a^2=b\ \text{for}\ a\geq0\ \text{and}\ b\geq0.\\\\\text{The square root:}\\\\\sqrt{a}=b\iff b^2=a\ \text{for}\ a\geq0\\===================$

$\text{If you want the principal square root (arithmetic square root):}\\\\\sqrt{225}=15\ \text{because}\ 15^2=225\\\\\text{If you want square root (algebraic square root):}\\\\\sqrt{225}=\pm15\ \text{because}\ (-15)^2=225\ \text{and}\ 15^2=225$

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2 years ago

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If u can do this your a real mathematics like OMG

Semenov [28]

Answer: z+x x y

2 4/5 + (3/5 × 1/3) use BODMAS

14/5 + 1/5

15/5

Step-by-step explanation:

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2 years ago

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A social psychologist interested in cultural differences compared women of two ethnic groups on a Role Approval Index on which h

Levart [38]

Answer:

a. 5.26

Step-by-step explanation:

As, the standard deviation of the distribution of the difference between mean is 0.76 so the t score will be simply calculated by dividing the difference of means by standard deviation of the distribution of the difference between mean as hypothesized difference is zero.

t score=Xbar A- Xbar B/Sd of difference of means

t score=55-51/0.76

t score=4/0.76=5.26

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2 years ago

A $3000 loan has an annual interest rate of 6.6% on the amount borrowed. How much time has elapsed if the interest is now $1386?

san4es73 [151]

Answer:

Step-by-step explanation:

time=interest

P*R

time=1386*100

6.6 * 3000

time=7

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2 years ago