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1 year ago

The table below gives the cost of toys at a toy store. Does this represent a proportional relationship?

Mathematics

1 answer:

Goshia [24]1 year ago

8 0

begin math size 18px style text No, because end text 7 over 12 text is not equivalent to end text 1 half text. end text end style

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What are the explicit equation and domain for a geometric sequence with a first term of 4 and a second term of −12? an = 4(−3)n

nadya68 [22]

The geometric sequence is given by:
an=ar^(n-1)
where:
a=first term
r=common ratio
n is the nth term
given that a=4, and second term is -12, then
r=-12/4=-3
hence the formula for this case will be:
an=4(-3)^(n-1)
where n≥1

5 0

2 years ago

Read 2 more answers

Need number 2 please!!

valentina_108 [34]

Answer:

Step-by-step explanation:

note that i = $\sqrt{-1}$

given

- 1 + 2i $\sqrt{3}$

= - 1 + $\sqrt{2^2(-1)3}$

= - 1 + $\sqrt{-12}$

6 0

1 year ago

Joy Wigens, who works at Putnam Investments, received a check for $2,670. She deposited 1/3 of the check in her Citibank account

spin [16.1K]

Answer: $1,780

Step-by-step explanation:

Joy Wigens deposited 1/3 of the check of $2,670 that she received in her Citibank account.

The amount she deposited in her Citibank account was:

= 1/3 * 2,670

= $890

The amount she is left with after this deposit will therefore be:

= Check amount - deposit at Citibank

= 2,670 - 890

= $1,780

5 0

2 years ago

Anyone! Please help me! I don't understand at all what to do! Help would be really appreciated :)

Rom4ik [11]

Answer: They are parallel

Step-by-step explanation:

If two lines are parallel , then they must have the same slope and if two lines are perpendicular , the product of their slope must be -1.

To check this , we must calculate the slope of the two lines given.

Slope = $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

from the first point

$y_{1}$ = 2

$y_{2}$ = 1

$x_{1}$ = 5

$x_{2}$ = -1

substituting the values

slope 1 = 1 - 2 / -3 - 5

slope1 = -1 / -8

slope 1 = 1/8

Using the same format to calculate the slope of the second line

$y_{1}$ = -2

$y_{2}$ = 0

$x_{1}$ = -1

$x_{2}$ = 15

slope 2 = 0 - (-2) / 15 - (-1)

slope 2 = 2/16

slope 2 = 1/8

Since slope 1 = slope 2 , this implies that the lines are parallel

6 0

2 years ago

Noel and Joy started dancing in an effort to lose weight. Noel recorded the number of calories she burns in x hours in the table

Darya [45]

Answer:

Noel burns calories faster. Choice D

Step-by-step explanation:

n(x)=250x (noel’s burned calories per hour)

j(x)=100x (joy’s burned calories per hour)

4 0

1 year ago