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4 years ago

Someone please help

Mathematics

1 answer:

Alex777 [14]4 years ago

8 0

Answer:

put it in desmos

Step-by-step explanation:

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Braxton loves downloading new music he originally had 41 songs but plans to purchase 4 new songs each week. he wants to know how

ycow [4]

Answer:

$a_110=41+(110-1)4$

Step-by-step explanation:

He already has songs = 41

Since we are given that he purchase four songs every week .

So, in first week he purchase songs = 4

Initially he already has 41 songs

So, total songs after 1 week = $41+(4\times1)=45$

After 2 weeks he will have songs = $41+(4\times 2)=49$

This forms an arithmetic sequence : 41,45,49......

Formula of nth term in A.P. : $a_n=a+(n-1)d$

a = first term = 41

d = common difference = 45-41=49-45=4

Since we are required to find the new songs after110 weeks

So, n =110

Substituting values :

$a_110=41+(110-1)4$

Thus Option A is correct.

4 0

3 years ago

Length of a rectangle is 4 inches less than twice it’s width of the perimeter is 70 inches what’s the dimensions?

Vedmedyk [2.9K]

W= width
L= length= 2W-4
Perimeter= 70

FIND WIDTH:
P= 2(L + W)
P= 2L + 2W
substitute 2W-4 for L
70= 2(2W-4) + 2W
multiply 2 by all in parentheses
70= (2*2W) + (2*-4) + 2W
70= 4W - 8 + 2W
combine like terms
70= 6W - 8
add 8 to both sides
78= 6W
divide both sides by 6
13= W

FIND LENGTH:
substitute w=13 to find width
L= 2W-4
L= 2(13)-4
L= 26-4
L= 22

CHECK:
P= 2(L + W)
70= 2(22 + 13)
70= (2*22) + 2(13)
70= 44 + 26
70= 70

ANSWER:
length= 22 inches
width= 13 inches

Hope this helps! :)

3 0

3 years ago

mr hill has 27 students in his class and mr chang has 24 students in his class.both classes will be divided into equal sized tea

Svetlanka [38]

Answer:

mr hill: 9

mr chang: 12

Step-by-step explanation:

mr hill can have 3 teams of 9 and

mr chang can have 2 teams of 12

5 0

3 years ago

Read 2 more answers

Jane is planning to put a new fence around her flower garden. She wants to change the shape, but doesn't want to change the amou

ANEK [815]

Answer:

The answer is below

Step-by-step explanation:

Let us assume that the length of the square be x. Therefore the area of the square is given as:

Area of square = length × length = x × x = x²

Given that the length of one side of the rectangle is twice the length of the other side. Let the length of the small side be a therefore the length of the long side = 2a

The area of the rectangle = length of small side × length of long side = a × 2a = 2a²

Since both the rectangle and square are to occupy the same space, hence:

$Area\ of\ rectangle=Area\ of \ square\\\\2a^2=x^2\\\\a=\sqrt{\frac{x^2}{2} }\\ \\a=\frac{x}{\sqrt{2} }$

Length of small side = a = $\frac{x}{\sqrt{2} }$ , length of long side = 2a = $\frac{2x}{\sqrt{2} }$

The length of the sides are length of the square side divide by √2 ( $\frac{x}{\sqrt{2} }$ ) and twice the length of the square side divide by √2 ( $\frac{2x}{\sqrt{2} }$ )

6 0

3 years ago

If I get a 100 on one assingment and a 57 on the other, what is my average of the assignments?

MakcuM [25]

Answer:

78.5

Step-by-step explanation:

Add the two scores, and then divide this sum by 2 to obtain the average score:

$\frac{100 + 57}{2} = \frac{157}{2} = 78.5$

7 0

3 years ago

Read 2 more answers