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3 years ago

Question 1

Mathematics

1 answer:

Vikki [24]3 years ago

4 0

1. 30
i think 2 is 16. not sure

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Please help, giving brainliest too whoever answers first

ValentinkaMS [17]

Answer:

Step-by-step explanation:

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3 years ago

the area A, of a square whose side has length s is given by A=s^2. calculate the length, s, of the side of a square as the posit

Romashka [77]

Given that the area of this square is 361 ft^2, the side length is √(361 ft^2), or 19 ft.

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3 years ago

The common difference in an arithmetic sequence is –2 and the first term is 47. What is the 29th term?

BlackZzzverrR [31]

An arithmetic sequence is an ordered list of numbers where the next number is found by adding on to the last number (ex: 2,5,8,11... is a sequence where 3 is added on to find the next number).

The equation for an arithmetic sequence is
$A_{n}=A_{1}+(n-1)d$

$A_{n}$ is the "n-th" number in the sequence (ex: is the first term in the sequence)
d is the number you add (common difference) to find the next number
The first number in the sequence is 47 so $A_{1}=47$
d=-2 because the question gives you that

$A_{n}=A_{1}+(n-1)d$
 $A_{29}=47+(29-1)(-2)$
 $A_{29}=47+(28)(-2)$
 $A_{29}=47+-56$
 $A_{29}=-9$

The answer is A. -9.

 

The answer is C. 158

For the second one, it gives you $A_{1}=4$ and $A_{}=18$
You can use this to find d

 $A_{n}=A_{1}+(n-1)d$
 $A_{3}=4+(3-1)d$
 $18=4+(3-1)d$
 $18=4+2d$
 $14=2d$
 $7=d$

Now you can just solve using the equation normally.
 $A_{n}=A_{1}+(n-1)d$
 $A_{23}=4+(23-1)(7)$
 $A_{23}=4+(22)(7)$
 $A_{23}=4+154$
 $A_{23}=158$

The answer is C. 158

8 0

4 years ago

Read 2 more answers

What goes up and down without moving? Whoever answers first gets brainliest.

pav-90 [236]

Answer: temperature and weight

Step-by-step explanation: Temperature can increase or decrease/can go up and down without moving. The same goes with weight, it can go up or down without moving.

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3 years ago

Of all the rectangles with a perimeter of 100 feet, find the dimensions of the one with the largest area

Alborosie

P=2l+2w
100=2l+2w
divide both sides by 2
50=l+w

So what two numbers that have a sum of 50 have the largest product?

25*25=625 which makes for a large area, the largest

answer=l=25 w=25

6 0

3 years ago