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Taya2010 [7]
3 years ago
13

Divide: –65.86 ÷ (–7.4)

Mathematics
1 answer:
Rina8888 [55]3 years ago
3 0

Answer:

8.9


Step-by-step explanation:

The answer is 8.9 because two negatives divided by each other equals a positive. In this case, there are two negatives so you know the answer will be a positive. In the end when you divided –65.86 ÷ (–7.4), you get 8.9!

Hope this helps, have a good day. c;

(You can also type it into your calculator if you have one, and you should hopefully get the same answer.)


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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
7 0
3 years ago
3.9t + 5.9t =<br><br><br><br><br> Sum one pls answer!!!!
MissTica

Answer:

9.8t

Step-by-step explanation:

3.9t + 5.9t = 9.8t

8 0
3 years ago
Read 2 more answers
6.) Alan, Becky, Jesus, and Mariah are four students in the chess club. If two of these students will be selected to represent t
Artist 52 [7]

Let's begin by listing out the information given to us:

There are four students: n = 4

Number of students to be selected: r = 2

To calculate the combination of 2 students to be chosen, we use:

\begin{gathered} ^4C_2=\frac{n!}{(n-r)!}=\frac{4!}{(4-2)!}=\frac{4!}{2!} \\ ^4C_2=\frac{4\cdot3\cdot2\cdot1}{2\cdot1}=\frac{4\cdot3}{1}=12 \\ ^4C_2=12 \end{gathered}

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3 0
2 years ago
Hey there! I was wondering if I could receive help on solving these first 4 questions! :)
bulgar [2K]

Given

Find

Surface Area and Volume of the figure.

Explanation

As we know , surface area of cuboid is ( 2lb + 2bh + 2hl ) and

Volume of cuboid

l\times b\times h

here l = 14cm, b = 11cm and h = 14cm

so, Surface area =

\begin{gathered} 2\times14\times11+2\times11\times14+2\times14\times14 \\ 308+308+392 \\ 1,008cm^2 \end{gathered}

Volume of cuboid =

\begin{gathered} 14\times11\times14 \\ 2,156cm^3 \end{gathered}

Final Answer

Surface Area = 1,008

Volume = 2,156

6 0
1 year ago
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