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3 years ago

Please help!!! MAX POINTS I CAN DO i put it in math because i trust the math people more

Mathematics

2 answers:

Ulleksa [173]3 years ago

6 0

Example 1: An ice cube being placed on the counter is an reversible effect on the ice cube because the ice cube is still an ice cube it doesn't change the elements of it.

Example 2: An egg being broken in a hot pan is a irreversible effect because you can't turn the egg back into its original form.

Hope this helps!

Rama09 [41]3 years ago

5 0

Answer:

5: the ice cube melts; no 6: the egg is cooked; no

Step-by-step explanation:

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Two cars are traveling down the highway with the same speed. If the first car increases its speed by 1km/hr, and the other car d

Olegator [25]

Answer:

The speed of the cars is $32 \frac{km}{h}$

Step-by-step explanation:

First we must first have the clear concept that $speed=\frac{distance}{time}$ or $s=\frac{d}{t}$

Our question is the speed of the cars then the variable to clear will be s.

Let's raise the equation for each car taking into account that we have the following data:

Car 1: $s_{1}=s+1$ , $t_{1}=2$ and $d_{1}= d_{2}$

Car 1: $s_{2}=s-10$ , $t_{2}=3$ and $d_{1}= d_{2}$

The two cars travel the same distance so we will raise the distance formula for each car and then match them.

Car 1

$d_{1}=s_{1}*t_{1}$

$d_{1}=(s+1)*2$

$d_{1}=2s+2$

Car 2

$d_{2}=s_{2}*t_{2}$

$d_{2}=(s-10)*3$

$d_{2}=3s.30$

$d_{1}=d_{2}$

$2s+2=3s-30$

$2+30=3s-2s$

$32=s$

The speed of the cars is 32 km/hr

7 0

3 years ago

Juan and Nina are in the Junior High Orchestra. As part of the orchestra they each have to learn two instruments. Juan is learni

larisa86 [58]

Answer:

Nina practiced the viola for 11.25 hours last week.

Step-by-step explanation:

Juan practiced the violin for 9 hours last week. For each 3 hours that he practices the violin, he practices 2.5 hours of cello. So

3h violin - 2.5h cello

9h violin - xh cello

$3x = 9*2.5$

$x = 7.5$

He practiced 7.5 hours of cello, the same as Nina.

For every 3 hours Nina spends practicing the viola she practices the cello for 2 hours. So:

3h viola - 2h cello

xh viola - 7.5h cello

$2x = 3*7.5$

$x = 7.5*1.5$

$x = 11.25$

Nina practiced the viola for 11.25 hours last week.

7 0

3 years ago

True or False: No matter which factors you start with, you will always end up with the same numbers in the end using prime facto

seropon [69]

Answer:

True

Step-by-step explanation:

In Prime factorization, we are expected to obtain factors that are prime numbers that can multiply themselves to give the original number. So long as the first factor can divide the number without a remainder, other remaining factors can be multiplied together to give the original number.

Prime factorization of the number, 15 goes thus;

15/3=5

5/5=1

3*5=15

So, all the factors multiply to give the original number.

8 0

2 years ago

Is 7/9 an irrational number?

Mila [183]

Answer:

7/9 is a rational number

Step-by-step explanation:

x/y where x=7 and y=9 aand an reatinal number is something that is composed of an integer

3 0

3 years ago

Read 2 more answers

Solve 7 ÷ one half = ___. Question 1 options: 14 15 24 40

Norma-Jean [14]

Answer:

O 14

Step-by-step explanation:

hope it is helpful :)

7 0

2 years ago