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Likurg_2 [28]
3 years ago
10

Help please? 1.9x10⁵/2.5x10⁻⁹

Mathematics
2 answers:
anygoal [31]3 years ago
8 0

Answer:

7.6 ✕ 10^13

Step-by-step explanation

MariettaO [177]3 years ago
5 0

Answer:

6.33...

Step-by-step explanation:

1.9x10^5 = 190 000

2.5x10^-9 = 0.000000003

190 000/0.000000003 = 6.333....

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Hannah earns $48 in 4 hours at this rate how many dollars will she earn in 20 hours?
baherus [9]
Hannah will earn $240 in 20 hours

Explanation: Since it tells you she earns $48 in 4 hours, you have to find how much she earns in 1 hour. So you do 48 divided by 4 (12) and that is how much she earns in 1 hour. Since the question is, how much does she earn in 20 hours, you multiply 12 x 20 and that equals 240 which means she earns $240 in 20 hours
8 0
3 years ago
Amy bought 2/3 pound of dark chocolate and 1/4 pound of milk chocolate. how much did she buy
stich3 [128]
B is the correct answer
3 0
3 years ago
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The ratio of the geometric mean and arithmetic mean of two numbers is 3:5, find the ratio of the smaller number to the larger nu
IgorC [24]

Answer:

\frac{1}{9}

Step-by-step explanation:

Let the numbers be x,y, where x>y

The geometric mean is

\sqrt{xy}

The Arithmetic mean is

\frac{x + y}{2}

The ratio of the geometric mean and arithmetic mean of two numbers is 3:5.

\frac{ \sqrt{xy} }{ \frac{x + y}{2} }  =  \frac{3}{5}

We can write the equation;

\sqrt{xy}  = 3

or

xy = 9 -  -  - (2)

l

and

\frac{x + y}{2}  = 5

or

x + y = 10 -  -  - (2)

Make y the subject in equation 2

y = 10 - x -  -  - (3)

Put equation 3 in 1

x(10 - x) = 9

10x -  {x}^{2}  = 9

{x}^{2}  - 10x + 9 = 0

(x - 9)(x - 1) = 0

x =1  \: or \: 9

When x=1, y=10-1=9

When x=9, y=10-9=1

Therefore x=9, and y=1

The ratio of the smaller number to the larger number is

\frac{1}{9}

3 0
2 years ago
What is area of this
nata0808 [166]

Answer:

A = 20.5 sq units

Step-by-step explanation:

you have the height of 5 but need to figure out the base

we can use the Pythagorean Theorem two times to find it

1) a² + 5² = 7²

a² = 49-25

a = \sqrt{24} = \sqrt{4}·\sqrt{6} = 2\sqrt{6}

2) b² + 5² = 6²

b² = 36-25

b = \sqrt{11}

Base = 2\sqrt{6} + \sqrt{11}

A = 1/2 x 5· (2\sqrt{6} + \sqrt{11})

A = 2.5 · (2\sqrt{6} + \sqrt{11})

A = 2.5(8.2)

A = 20.5

3 0
3 years ago
The larger square is composed of 16 smaller squares. Find the length of the sides of Square "a".
kondaur [170]

Answer:

2.5 ft.

Step-by-step explanation:

The area of the side of each smaller square = 100 / 16 sq ft.

= 6.25 sq feet.

So the length of each smaller square =  square root of 6.25

= 2.5 ft.

6 0
2 years ago
Read 2 more answers
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