Can someone help me with 17, 19 and 21? I don't understand!

Mathematics

1 answer:

vfiekz [6]4 years ago

5 0

The first number in parenthesis is the x axis the second is they the first number in the parenthesis is the x axis the second is the y axis you have to make an equation in y=my+b form and I can’t see what I’m typing due to your picture so sorry

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Please please help me

Gekata [30.6K]

Answer:

$\large\boxed{\dfrac{\boxed{8}}{81}}$

Step-by-step explanation:

$\text{If}\ a_1,\ a_2,\ a_3,\ a_4,\ ...,\ a_n\ \text{is the geometric sequence, then}\\\\\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=\dfrac{a_4}{a_3}=...=\dfrac{a_n}{a_{n-1}}=constant=r-\text{common ration}.\\\\\text{We have}\ \dfrac{1}{2},\ \dfrac{1}{3},\ \dfrac{2}{9},\ \dfrac{4}{27},\ ...\\\\\dfrac{\frac{1}{3}}{\frac{1}{2}}=\dfrac{1}{3}\cdot\dfrac{2}{1}=\dfrac{2}{3}\\\\\dfrac{\frac{2}{9}}{\frac{1}{3}}=\dfrac{2}{9}\cdot\dfrac{3}{1}=\dfrac{2}{3}\\\\\dfrac{\frac{4}{27}}{\frac{2}{9}}=\dfrac{4}{27}\cdot\dfrac{9}{2}=\dfrac{2}{3}$

$\bold{CORRECT}\\\\\dfrac{x}{\frac{4}{27}}=\dfrac{2}{3}\qquad\text{multiply both sides by}\ \dfrac{4}{27}\\\\x=\dfrac{2}{3}\cdot\dfrac{4}{27}\\\\x=\dfrac{8}{81}$

8 0

3 years ago

Which are the better statistics to use to compare the school class sizes?

galina1969 [7]

Answer:

Step-by-step explanation:

8 0

3 years ago

Answers choices are in the picture

UkoKoshka [18]

Answer: I believe the answer is b.

6 0

3 years ago

What are the factors of 2x^2 - 10x + 12 ?

vodka [1.7K]

The answer for your problem is going to be 4

5 0

3 years ago

The solution to 4p+2<2(p+5) is

gizmo_the_mogwai [7]

Answer:

p<4

Step-by-step explanation:

4p+2< 2(p+5)

Distribute: 4p+2<2p+10

Subtract 2 from both sides: 4p<2p+8

Subtract 2p from both sides: 2p<8

Divide and we get: p<4

7 0

3 years ago