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3 years ago

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

2 answers:

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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babymother [125]

Answer:

q<76

Step-by-step explanation:

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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:

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