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3 years ago

Please thank you so much yall

Mathematics

2 answers:

trapecia [35]3 years ago

6 0

21. 2 meters are equal to 200 centimeters. To find out how many can be cut, divide. 200/10 is equal to 20.

Leto [7]3 years ago

4 0

19. There are 24 hours in a day and Maria travelled for 15 days so multiply the two:
24*15=360

So Maria travelled for 360 hours.

22a. False; 2,000 lbs = 1 Ton
22c. True; 48 oz = 3 lbs

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A proportion question

gizmo_the_mogwai [7]

Answer:

because x,y,z are in continuous proportion

=> x/y = y/z

<=> xz = y² =>

$\frac{xz}{y} =y\\\\=>\frac{x^{3}z^{3} }{y^{3} }=y^{3}$ (1)

with (1), we have:

$x^{2}y^{2}z^{2}(\frac{1}{x^{3} }+\frac{1}{y^{3} }+\frac{1}{z^{3} })\\\\= (xyz)^{2}(\frac{1}{x^{3} } +\frac{y^{3} }{x^{3}z^{3} }+\frac{1}{z^{3} })\\\\=(xyz)^{2} (\frac{x^{3}+y^{3}+z^{3} }{x^{3}z^{3}} )\\\\=y^{2}.\frac{x^{3}+y^{3}+z^{3} }{xz} \\\\= xz.\frac{x^{3}+y^{3}+z^{3} }{xz} \\\\=x^{3}+y^{3}+z^{3}$

Step-by-step explanation:

3 0

3 years ago

Anna charges $8.50 per hour to babysit. Complete the table, and answer the questions below. Write an expression describing her e

GaryK [48]

The equation that show the relationship between Anna earning and time worked is y = 8.5h.

<h3>Linear equation</h3>

Linear equation is in the form:

y = mx + b

where m is the rate of change, b is the y intercept and y, x are variables.

Let y represent Anna earnings for working h hours.

Since she charges $8.50 per hour to babysit. Hence:

y = 8.5h

The equation that show the relationship between Anna earning and time worked is y = 8.5h.

Find out more on Linear equation at: brainly.com/question/14323743

6 0

3 years ago

The tree frog population in your back yard doubles every two weeks. Currently, there are 10 frogs in your back yard. Assuning th

vova2212 [387]

Answer:

there would be 40,960 tree frogs i think

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

3/24 in lowest terms

lesya [120]

3/4 =3/4

4/6= 2/3

8/18= 4/9

9/15=3/5

7/21= 1/3

10/12= 5/6

4/8= 1/2

10/16=5/8

15/20= 3/4

3/30=1/10

7 0

3 years ago

The opposite of -10 is<br><br> 1.-(-(-10))<br> 2.-10<br> 3.10<br> 4.-|10|

IRISSAK [1]

3. 10 because the opposite of a negative is a positive number

5 0

3 years ago

Read 2 more answers