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Alisiya [41]
3 years ago
14

7/8 turned into a decimal. Show all the work.

Mathematics
2 answers:
Alenkasestr [34]3 years ago
7 0

The most obvious answer is to write this into a calculator and read the result, but if you're asking this, I'm assuming you're not allowed to.

This fraction can be easily calculated by hand in two ways: either you remember that

\dfrac{7}{8} = \dfrac{7}{2^3}

Which means that dividing by 8 is the same ad dividing by two three times:

7\div 2 = 3.5,\quad 3.5 \div 2 = 1.75,\quad 1.75 \div 2 = 0.875

Or you can think that 7/8 is 1/8 away from one. Just like before, you can compute 1/8 as

1\div 2 = 0.5,\quad 0.5 \div 2 = 0.25,\quad 0.25 \div 2 = 0.125

And so 7/8 is

\dfrac{7}{8} = 1-\dfrac{1}{8} = 1-0.125=0.875

drek231 [11]3 years ago
6 0
The answer is....0.875
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
Layla has 4 pounds of birdseed seeds. each day she feeds the robins 1/6 pounds of seedS. for how many days can she feed the Robb
Nataly [62]

Answer:

24

Step-by-step explanation:

since 6/6 equals a whole, then 6/6 equals 1 pound. Since she feeds the birds 1/6 of a pound each day, just find out how many 6th are in 4 pounds (24).

Hope this helps :) good luck

8 0
3 years ago
A bridge in the shape of an arch connects two cities separated by a river. The two ends of the bridge are located at (–7, –13) a
sdas [7]

Answer:

y=-\dfrac{13}{49}x^2

Step-by-step explanation:

The shape of an arch corresponds to a parabola.

the general equation for a parabola is:

y=ax^2+bx+c

we're given three coordinates: (-7,-13),(7,-13) and (0,0)

so we can plug these values in the general equation to make 3 separate equations:

(x,y) = (-7,-13)

-13=a(-7)^2+b(-7)+c

49a-7b+c=-13

(x,y) = (7,-13)

-13=a(7)^2+b(7)+c

49a+7b+c=-13

(x,y) = (0,0)

0=a(0)^2+b(7)+c

c=0

so we have three equations. and we can solve them simultaneously to find the values of a,b, and c.

we've already found c = 0, let's use substitute it to other equations.

49a-7b+c=-13\quad\Rightarrow\quad49a-7b=-13

49a+7b+c=-13\quad\Rightarrow\quad49a+7b=-13

we can solve these two equation using the elimination method, by simply adding the two equations

\quad\quad49a-7b=-13\\+\quad49a+7b=-13

------------------------------

\quad\quad 98a=-26

\quad\quad a=-\dfrac{13}{49}

Now we can plug this value of a in any of the two equations.

49a-7b=-13

49\left(-\dfrac{13}{49}\right)-7b=-13

-13-7b=-13

-7b=0

b=0

We have the values of a,b, and c. We can plug them in the general equation to find the equation of the arch.

y=\left(-\dfrac{13}{49}\right)x^2+0x+0

y=-\dfrac{13}{49}x^2

49y=-13x^2

This our equation of the arch!

5 0
3 years ago
Mr. Brown's class is collecting books for a book drive. They started with 2 books. On the first day, they had 6 books. On the se
elena-s [515]

Answer:

the answer is b i click it and it was right

y=2(3)^x

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
suppose your parents are helping you invest money for the future. they open an account for you in January with an initial deposi
alex41 [277]
X=year
y=$

y=200(1.003)^12x

3.6%->.036/12 (compounded monthly)

=0.003+1

y=200(1.003)^12(1) (1 year)

=$207.31999

BUT

200•12 ($200 deposited every month)

=$2400

2400+207.3199=

$2607.32
6 0
3 years ago
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