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3 years ago

10 to the zero power times 0.23=

Mathematics

1 answer:

Lana71 [14]3 years ago

5 0

The answer is 0.23. Ned an explanation

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There are 450 computer's in a technology store. Alex Bought 231 of them for school. Each one was $230. He has $10,000. How much

stepan [7]

231 x 230 = 53,130
mans in negatives

8 0

3 years ago

23 + 4.5 = 4.5 + 23 es un ejemplo de la propiedad

dybincka [34]

Step-by-step explanation:

ES UN EJEMPLO DE PROPIEDAD COMMULATIVE.

hola Hermano, cóme TE IIamas

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3 years ago

What is the slope of the line y=2x+5?

sweet [91]

Answer:

The slope is 2

Explanation:

The equation is written in y=mx+b
M would always be the slope and b the y intercept

Hope this helps!!

4 0

2 years ago

Read 2 more answers

There are 13 animals in a barn. Some are Chickens and some are Pigs. Altogether

konstantin123 [22]

Answer:

Ahh! What a classic: Systems of Equations!

So, if you don't know what a system of equations is, its basically two equations with two variables combined into a system.

So, let x=# of pigs

And also, Let y=# of chickens

Let's make our first equation!

$13=x+y$

This is because there are 13 animals in a barn.

So then, knowing that a pig has 4 legs and a chicken 2:

$40=4x+2y$

This is because there are 40 legs in total, and we multiply the variable because that's how many legs each creature has.

So, here is our system!

$\left \{ {{x+y=13} \atop {4x+2y=40}} \right.$

Through Substitution (the inputting of something instead of a variable):

$x+y=13\\x=13-y$

Then, we input it into the next equation:

$4(13-y)+2y=40\\52-4y+2y=40\\-2y=-12\\y=6$

This means that there are 6 chickens, and by inputting it into the first equation:

$x+6=13\\x=7$

So there you have it!

FYI there are 6 chickens and 7 pigs.

Hope this helps!

P.S. Stay Safe!

8 0

3 years ago

Read 2 more answers

To travel 80 miles, it takes Sue, riding a moped, 2 hours less time than it takes Doreen to travel 60 miles riding a bicycle. Su

andriy [413]

Answer:

Time taken by Doreen is 6 hours and speed is 10 miles per hour.

Time taken by Sue is 4 hours and speed is 20 miles per hour.

Step-by-step explanation:

Let the speed of Doreen be x

According to the question speed of Sue is = x+10

time taken By Sue to cover 80 miles = $\frac{80}{x+10}$

time taken by Doreen to travel 60 miles = $\frac{60}{x}$

According to question Sue take two hours less than Doreen takes

therefore

$\frac{60}{x}$ - $\frac{80}{x+10}$ =2

$\frac{60(x+10)-80x}{x(x+10)}$ =2

60(x+10) -80x = 2(x(x+10)

60x+600-80x = $2x^2+20x\\$

simplifying it ,we get

$2x^2+40x-600=0\\$

Dividing both sides by 2 ,we get

$x^2+20x-300=0\\$

solving it for x ,we get

(x+30)(x-10) =0

x =-30 which is not possible

x =10 miles per hour

Speed of Doreen = 10 miles per hour

Speed of Sue = 10+10 = 20 miles per hour

Time taken by Doreen = 60 divided by 10 = 6 hours

Time taken by Sue = 80 divided by 20 = 4 hours

5 0

3 years ago