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3 years ago

7

-18x+2x-15x+23x-12x-4x Combine like terms

2 answers:

Helga [31]3 years ago

4 0

Combine like terms =75x

Natasha_Volkova [10]3 years ago

3 0

Answer:

-24x

Step-by-step explanation:

Combining them all leads you to get -24x.

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In the top row of an chessboard, Tom writes the values 1, 2, 4, 8, 16, 32, 64, 128. In the leftmost column, Tom writes the value

solmaris [256]

$sum\ of\ the\ values\ in\ the\ top\ row:\\\\S=1+2+4+8+16+32+64+128= \frac{1-2^8}{1-2} =2^8-1=255\\\\ the\ sum\ of\ all\ the\ numbers\ on\ the\ chessboard:\\\\S\cdot1+S\cdot3+S\cdot9+S\cdot27+S\cdot81+S\cdot243+S\cdot729+S\cdot2187=\\\\=S\cdot(1+3+9+27+81+243+729+2187)=255\cdot \frac{1-3^8}{1-3} =\\\\=255\cdot \frac{-6560}{-2} =255\cdot3280=836,400\\\\Ans.\ the\ sum\ of\ all\ the\ numbers\ on\ the\ chessboard\ is\ 836,400$

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3 years ago

A square has sides lengths of 7 in.find the length of the squares diagonal. if necessary round to the nearest tenth

Helga [31]

Answer:

9.9 in

Step-by-step explanation:

x² = 7² + 7² = 98

x = 9.9

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3 years ago

last night's Dansball game, there were 4 walks and 15 hits. Express the ratio of walks to hits , written in three different ways

Ede4ka [16]

Answer:

4/15, 4:15, 4 to 15

Step-by-step explanation:

Let W be the walks and H the hits, then,

WAY1:

$\frac{W}{H} =\frac{4}{15}$

WAY2:

W:H⇒4:15

WAY3

W to H ⇒4 to 15

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3 years ago

You are making meat loaf with yield: 50, 4oz portions what is the total recipe cost

slamgirl [31]

Answer:

$200oz$

Step-by-step explanation:

The question says that there are $50$ portions that are $4oz$ each.

Write an equation

$(50)4oz$

Simplify

$200oz$

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3 years ago

The circumference and the area of a circle woth radius 2cm

djyliett [7]

Area ≈ 12.57
Circumference ≈ 12.57

7 0

3 years ago

Read 2 more answers