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WARRIOR [948]
3 years ago
7

4x-5=6x+13 What is the first step in solving equations

Mathematics
2 answers:
expeople1 [14]3 years ago
8 0

Answer:

4x-6x=13+5

-2x=18

x=18/-2=-9

please follow me!!

laiz [17]3 years ago
4 0

Answer:

x=-7.5

Step-by-step explanation:

Create a numeral side and variable side and put them in the right sid you will get -13-5=6x-4x

-15=2x   divide 2x by 2 then -5  by 2

x=-7.5

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2x(5x-2) expanding brackets
Inga [223]

Step-by-step explanation:

2x(5x-2)

= 2x*5x - 2x*2 (Distributive property)

= 10x^2 - 4x

8 0
3 years ago
When adding or subtracting with scientific notation,why is it important to have the same power of 10?
sladkih [1.3K]
<h2>Explanation:</h2><h2></h2>

Because we perform something like common factor, so this guarantee that corresponding digits have regarding coefficients have the same place value. Remember that a number written in scientific notation is given by the product of a number between 1 and 10 and another number that is power of 10. For example, let's write two examples about this:

Addition:

a=2\times 10^3 \\ \\ b=4\times 10^3 \\ \\ \\ Then: \\ \\ a+b=2\times 10^3+4\times 10^3 \\ \\ =(2+4)\times 10^3 \\ \\ =5\times 10^3

Addition:

a=2\times 10^3 \\ \\ b=4\times 10^3 \\ \\ \\ Then: \\ \\ a+b=2\times 10^3+4\times 10^3 \\ \\ =(2+4)\times 10^3 \\ \\ =6\times 10^3

Subtraction:

a=7\times 10^5 \\ \\ b=2\times 10^5 \\ \\ \\ Then: \\ \\ a-b=7\times 10^5-2\times 10^5 \\ \\ =(7-2)\times 10^5 \\ \\ =5\times 10^5

4 0
3 years ago
4x+5y=13<br> 8x+7y=11 <br> find solution of system of equation
Pavel [41]

Point Form:

(−3, 5)

Equation Form:

x = −3,y = 5

3 0
3 years ago
HELPPPP MEEEE PLEASE!!!!​
creativ13 [48]

Answer:

Step-by-step explanation:

3 0
3 years ago
Entomologist heinz kaefer has a colony of bongo spiders in his lab. there are 1000 adult spiders in the colony, and their weight
Vera_Pavlovna [14]
We have to find the probability N(11,2)>12, wherein N(11,2)
is the normal law with mean 11 and standard deviation 2. 
Using a scientific calculator we get the probability 0.3. 

Now multiply by the population which is 1000 like this:
0.3*1000=300.

There is 300 <span>spiders  in the colony which weigh more than 12 grams</span>
6 0
3 years ago
Read 2 more answers
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