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lord [1]
2 years ago
12

Find the percent of each number mentally.

Mathematics
1 answer:
aleksandrvk [35]2 years ago
5 0
The correct answer is C
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Write the following numbers used in these statements in scientific notation. (Note: Some of these numbers have been rounded.)
lutik1710 [3]

Answer:

So in scientific form 4000 miles will be equal to 4\times 10^3miles

Step-by-step explanation:

We have given that radius of earth is 4000 miles

4000 miles can be written as 4×1000

We have to written 4000 miles in scientific form

We know that 1000 can be written in scientific form as 1000=10^3

So 4000miles =4\times 1000=4\times 10^3miles

So in scientific form 4000 miles will be equal to 4\times 10^3miles

5 0
2 years ago
How do you verify factoring is correct?
Ivahew [28]
Multiply the factors together. You should get the original expression.

For example, if we are to factor
2x^2 + 4x
we would factor as
2x(x + 2).
Check this by multiplying back in
2x*x + 2x*2 = 2x^2 + 4x
which is what we started with, so we know we are correct.
5 0
3 years ago
If 3 dogs were 2 ft and 4 were 5 what would be the total height of all of them together
seraphim [82]

Answer:

26 i think

Step-by-step explanation:

since the 3 dogs are 2 feet tall you would multiply them then multiply 4 by 5 and get 20 and 3x2 is 6 you add it up and get 26

7 0
3 years ago
Read 2 more answers
How do you solve this?
Katarina [22]

\bf \textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{}{ h},\stackrel{}{ k})\qquad \qquad radius=\stackrel{}{ r} \\\\[-0.35em] ~\dotfill\\\\ (x-6)^2+(y+5)^2=16\implies [x-\stackrel{h}{6}]^2+[y-(\stackrel{k}{-5})]^2=\stackrel{r}{4^2}~\hfill \begin{cases} \stackrel{center}{(6,-5)}\\ \stackrel{radius}{4} \end{cases}

Check the picture below.

6 0
3 years ago
Read 2 more answers
A box contains 14 books & 7 pieces of dusters. Each piece of duster weighs 0.2 pounds each book weighs 1.1 pounds. The box &
Olin [163]

Answer:

1.45

Step-by-step explanation:

weight of all books= 14×1.1= 15.4

weight of all duster=7×0.2= 1.4

weight of books and duster= 15.4+1.4=16.8

weight of the empty box = 18.25-16.8=1.45

4 0
2 years ago
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