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2 years ago

-2 3/4 - 4 7/10 + 2.6 - (1.9) I need it asap as a decimal

Mathematics

1 answer:

Drupady [299]2 years ago

5 0

Answer:

The answer is -6.75

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Easy! Please help! Giving BRAINLIEST <br>Look at the question on the picture <3

Drupady [299]

Answer:

2134

Step-by-step explanation:

3 0

1 year ago

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Solve the equation. x2 = 160

zhannawk [14.2K]

80 because 160 divided by 2 is 80 so 2 x 80

7 0

2 years ago

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Find the length of the arc<br> A.8 pie ft<br> B.32 pie ft<br> C.64 pie ft<br> D. 361 pie/ 12 ft

ExtremeBDS [4]

<h3>Answer: Choice A. 8pi feet</h3>

======================================================

Explanation:

The perimeter around the circle is known as the circumference

The full circumference of a circle with radius r is

C = 2*pi*r

In this case, r = 16 is the radius, so,

C = 2*pi*r

C = 2*pi*16

C = 2*16*pi

C = 32pi

is the full distance around the circle. But we only want 90/360 = 1/4 of that total distance. So take 1/4 of 32pi to get

(1/4)*32pi = (1/4*32)pi = 8pi

The arc length is exactly 8pi feet long

Approximately this is about 25.13274 feet

6 0

2 years ago

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Vega swam her leg of the race in 27.98 seconds and Janice swam her leg of the relay race in 25.679 seconds. What was their combi

morpeh [17]

To get their combined time, get the sum of Vega's time and Janice's

$27.98\text{ sec}+25.679\text{ sec }=53.659\text{ sec}$

Therefore, their combined time for their part of the relay is 53.659 seconds.

6 0

5 months ago

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;

$\sqrt{xy} = 3$

$xy = 9 - - - (2)$

and

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

$x + y = 10 - - - (2)$

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

-2 3/4 - 4 7/10 + 2.6 - (1.9) I need it asap as a decimal​

-2 3/4 - 4 7/10 + 2.6 - (1.9) I need it asap as a decimal