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pentagon [3]
3 years ago
10

Write the distance in scientific notation MATH HELP

Mathematics
2 answers:
OlgaM077 [116]3 years ago
8 0
Scientific ntation is
(number that is more than or equal to 1 and less than 10) times 10^n
n is the number of spaces the decimal point moved to the left to get to the number less than 10



a.
58000000
5.8
moved 7 places to left
5.8 times 10⁷


b.
0.0025
2.5
moved 3 places to the right or -3 spaces to the left
2.5 times 10⁻³
Stella [2.4K]3 years ago
4 0
<span>58000000=5.8⋅<span>10<span>

The 10 is to the 7th power.

I hope that helps!!!!!!

: )

</span></span></span>
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You are scheduled to receive $16,000 in two years. when you receive it, you will invest it for eight more years at 9.25 percent
Lunna [17]

I will have $32 470.69 in 10 yr.

I am not investing until 2 yr from now so, in 10 yr time, I will have invested for only 8 yr.

The formula for the future value (FV) of my investment is

FV = <em>C</em>(1 + <em>r</em>)^<em>n</em>

where <em>C</em> = my initial cash

<em>r</em> = the interest rate

<em>n</em> = the number of years

FV = $16 000(1.0925)^8 = $32 470.69

8 0
3 years ago
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zmey [24]
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4 0
2 years ago
The area of the sector formed by the 110 degree central angle is 50 units squared. What is the circumference of the circle
Mama L [17]

Answer:

The circumference of the circle is C=45.346 \:units.

Step-by-step explanation:

A sector is the part of a circle enclosed by two radii of a circle and their intercepted arc. A pie-shaped part of a circle.

The area of a circle is given by A_{circle}=\pi r^2

The formula used to calculate the area of a sector of a circle is:

A_{sector}=\frac{central \:angle}{360} \cdot {Area \:of \:whole \:circle}\\\\A_{sector}=\frac{\theta}{360} \cdot \pi r^2

The circumference of a circle is the distance around the outside of the circle and its given by

C=2\pi r

We know the central angle \theta = 110º and the area of the sector 50 units squared.

First, we use the formula to calculate the area of a sector to find the radius.

50=\frac{110}{360} \cdot \pi r^2\\\\\frac{110}{360}\pi r^2=50\\\\\frac{11\pi }{36}r^2=50\\\\11\pi r^2=1800\\\\r^2=\frac{1800}{11\pi }\\\\\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\\\\r=\sqrt{\frac{1800}{11\pi }},\:r=-\sqrt{\frac{1800}{11\pi }}

The radius can't be negative. Therefore,

r=\sqrt{\frac{1800}{11\pi }}\approx 7.217 \:units

Next, we apply the formula for the circumference of a circle.

C=2\pi (7.217)=45.346 \:units

7 0
3 years ago
Each batch of cookie mix need 0.4 cups of sugar, and each batch can make 16 cookies. If Ashley is making 4 batches of cookies, h
Nady [450]

Answer:

1.6 cups of sugar

Step-by-step explanation:

0.4 cups of sugar for 1 batch of cookies

And to find out the amount of sugar we need

We multiply 0.4 for the amount of batches

In this case it will be

0.4 x 4= 1.6 cups of sugar

4 0
1 year ago
A rectangular field is to be enclosed by a fence and divided
Phantasy [73]

Answer:

80000 square meters

Step-by-step explanation:

perimeter + dividing fence = 800

let a = length

let b = width

let c = length of dividing fence

perimeter = 2*a + 2*b

let's say...

c is the same as the length

2a + 2b + c = 800

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area = length*width

area = a*b

area / b = a

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3*(area/b) = 800 - 2b

area/b = (800 - 2b)

area = (800 - 2b)*b

To make the area large, we make the right hand side large.

800b - 2b^2

If you put in terms of x, y it looks like a downward opening parabola, so the max area is at the vertex. Half way between the roots.

y = -2x^2 + 800x

y = -x^2 + 400x

0 = x*(-x + 400)

roots are x= 0 and x = 400

vertex is at x, aka b = 200

area at b=200 is (800 - 400)*200 = 80000

and a is area/b... 80000/400 = 200

5 0
2 years ago
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