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frez [133]
3 years ago
7

What is the answer for 25.2÷2.1 using showing my work

Mathematics
1 answer:
lilavasa [31]3 years ago
7 0

Answer:

25.2

Step-by-step explanation:

2.1*12=25.2

use a calculator if you're allowed to show work that way, if not a simple way is

2.1*10=21

2.1*11=23.1

2.1*12 is equal to 2.1*10=21 because 2*12=24 and .1*12=1.2

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Simplify completely quantity of x squared plus 7 x minus 30 all over quantity of x plus 10. x2 + 4 x2 ? 4 x ? 3 x + 3
GalinKa [24]

This looks like: \frac{x^2+7x-30}{x+10}

To solve this problem, you'll want to use the AC method to factor x^2+7x-30.

After factoring your expression will look like this:

\frac{(x-3)(x+10)}{x+10}

Cancel out the x+10 because they are common factors, so you are just left with the simple x-3.

Answer is:

x - 3

4 0
2 years ago
Read 2 more answers
Solve the system by elimination <br><br> 4x+3y=-5<br><br> -x+3y=-10
Sedaia [141]

Subtract the 2nd row from the 1st row

5x = 5

Solve for x in the equation above

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Substitute x = 1 into any of the two equations above

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4 * 1 + 3y = -5

Solve for y in the equation above

y = -3

Therefore,

<u>x = 1</u>

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3 0
3 years ago
Which angles are vertical angles in the figure shown? Select two answers.
sukhopar [10]

Answer:

B and C

Step-by-step explanation:

Vertical angles are formed when you make lines make an  x shape (or a turned x shape).  The vertical angles are, on a normally positioned x the top and bottom angle, as well as the left and right angle.  so every x has 2 vertcial angles unless the x is further split up.

So the part with angles 1. 2. 3 and 4 the top angle is 2, the bottom is 3, the left angle is 1 and the right angle is 4.  This means the vertical angle pairs are 1 and 4 as well as 2 and 3.

So in total there are 2 x shapes, so 4 pairs of vertical angles.  Here are all the vertical angles.

1 and 4

2 and 3

5 and 8

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So from your choices you have 2 and 3 as choice B and 5 and 8 as choice C.

8 0
2 years ago
Why does the unit of time enter twice in the unit of acceleration?
AfilCa [17]
Because the speed has formula of distance divide time = m/s
and the acceleration is speed /time so (m/s)/s = m/(s*s) = m/s^2

hope this is understandably sure easy for you 
6 0
3 years ago
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The sum of two consecutive multiples of 9 is 63 .Find these multiples​
san4es73 [151]

Step-by-step explanation:

divide 63 from 9

=the answer is 7

7 0
3 years ago
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