21-26 only please help quickly I need answer quickly

Answers

Answer 1

Answer: 21 -
There are 1000 m in 1 km.
441.96/1000 = 0.44196
0.44196 km

22 -
There are 1000 mg in 1 g.
5700/1000 = 5.7
5.7 g

23 -
There are 1000 mL in 1 L.
0.946 * 1000 = 946
946 mL

24 -
There are 10 mm in 1 cm.
60(10)=600
600/50=12
12 beads

25 -
There are 1000 mL in 1 L.
1500(2)=3000
3000/1000=3
3 L

26 -
There are 100 cm in 1 m.
110(100)=11000
11000-8=10992
10992 cm

Answer 2

Answer: 21. 1,000 meters = 1 kilometer
441.96 meters = 0.44196 kilometer

22. 1,000 milligrams=1 gram
5,700 milligrams= 5.7 grams

23. 1 liter = 1,000 milliliters
0.946 liter = 946 milliliters

24. 10 millimeters = 1 centimeter
50 millimeters = 5 centimeters
60/5 = 12 sections between beads

25. 1,000 milliliters = 1 liter
1,500 milliliters = 1.5 liters
double 1,500 milliliters = double 1.5 liters = 3 liters

26. 100 centimeters = 1 meter
8 centimeters = 0.08 meter
Difference = 110 meters - 0.08 meter = 10,992 centimeters

Much better than that . . . How many pygmy pines would it take
to stack up to one redwood ?

110 / 0.08 = 1,375 of them, stacked top to bottom.

You're welcome.

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Explain why sin(90)=1

Answers

The length of the opposite side is the same as the length of the hypotenuse (they are the same side in this case), the ratio is:

sin(90 degrees) = 1 / 1 = 1

Thus, sin(90 degrees) equals 1.

In trigonometry, the sine function (abbreviated as sin) is defined based on the angles of a right-angled triangle.

Specifically, for a given angle θ in a right-angled triangle, the sine of θ is defined as the ratio of the length of the side opposite θ to the length of the hypotenuse (the longest side of the triangle, which is always opposite the right angle).

In a standard coordinate system, consider a right-angled triangle where one of the angles is 90 degrees (a right angle).

This angle is often denoted as π/2 radians in radians or 90 degrees in degrees.

In this triangle, the side opposite the angle θ (the side opposite the right angle) is the vertical side, and the hypotenuse is the longest side.

For a right-angled triangle with a 90-degree angle, the sine of θ is defined as:

sin(90 degrees) = length of opposite side / length of hypotenuse

Since the length of the opposite side is the same as the length of the hypotenuse (they are the same side in this case), the ratio is:

sin(90 degrees) = 1 / 1 = 1

Thus, sin(90 degrees) equals 1.

In radians, sin(π/2 radians) is also equal to 1 since it is the same angle as 90 degrees but measured in radians.

To learn more trigonometry click:

brainly.com/question/26719838

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In a right triangle, sin= $(opposite segment)/(hypotenuse)$
Because the "opposite segment " is actually the hypotenuse of the triangle we get the fraction $(hypotenuse)/(hypotenuse)$ which is 1.

James wants to send two gifts by mail. One package weighs 2 3/4 pounds. The other package weighs 1 3/4 pounds.What is the total packages

Answers

2 3/4=11/4
1 3/4=7/4
11/4+7/4=18/4....18(2)/4(2)=9/2.......4 1/2

Point A on a number line is 12 units to the left of 0. Point B is 9 units to the right of zero. What is the distance between Point A and Point B?A) -21 units
B) -3 units
C) 3 units
D) 21 units

Answers

I’m pretty sure it’s 21 units

a sum of RS 500 is in the form of denominators of RS5 & RS 10..if the total no. of notes is 90 ,find the no. of notes of each type................ do it by process will be mark as best

Answers

let rs.5 denominations be x , then rs 10 denominations will be 90-x

then total amount 5x + 10(90-x) which is rs.500

5x + 10(90-x) = 500

900 - 5x = 500
400 = 5x
therefore x = 80
therefore no. of rs.5 is 80
no. of rs.10 is 90-x = 90-80 = 10

Pythagorean triples are given by the formula x^2-y^2, 2xy, and x^2+y^2. Use the formulas for the Pythagorean triples to find a right triangle with leg lengths of 16 and an odd number. Show all of your work for full credit.

Answers

Answer:

Let the unknown length be x

We have a formula to find the triplet of a right angle triangle

Put the given length equal to all three terms in the triplet

$2m,m^2-1,m^2+1$

put 16 equal to all above three but number comes out has to be integer.

$2m=16$

$\Rightarrow m=8$

Now, $m^2-1=16$

$m^2=17$ will not give integer.

And now, $m^2+1=16$

$m^2=15$ will not get integer value

Hence, the value of m will be 8

And substituting the value in the triplet formula we get

$2m=2\cdot 8=16$ which is given.

$m^2-1=64-1=63$ the other leg and is odd.

And $m^2+1=64+1=65$ the hypotenuse or the longest side.

Hence, 16,63 and 65 will form a right triangle

Pythagoras theorem is:

$\text{one side}^2+\text{other side}^2=hypotenuse^2$

Here, 16 and 63 are sides or legs and 65 is the hypotenuse.

A drum set originally costs $500, but it is on sale for 20% off. If a customer buying the drum set has a $70 gift card, what will her final price be on the drum set?

Answers

20% of $500 is $100, so you take away $100 from $500.
= 500 - 100

This leaves you $400. When the customer buys the drum set, you take $70 off of $400;

400 - 70
which leaves you with $330 as the final price.

20% of 500 is 100 so 500-100=400 and then with the 70 dollar gift card you have to do 400-70 which is 330. The final price is $330

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