All categories

2 years ago

using integer to describe the situation 12 protons and an atom blank 18 electrons around an atom blank

Mathematics

1 answer:

Phantasy [73]2 years ago

4 0

Atoms and protons are tricking. they snicks and twix

You might be interested in

What is the product of all constants $k$ such that the quadratic $x^2 + kx +15$ can be factored in the form $(x+a)(x+b)$, where

Setler79 [48]

Answer:

$k=-16,k=-8,k=8,k=16$

Step-by-step explanation:

We are given quadratic equations as

$x^2+kx+15$

and it can be factored as

$=(x+a)(x+b)$

now, we can multiply factor term

$(x+a)(x+b)=x^2+(a+b)x+ab$

now, we can compare

$x^2+(a+b)x+ab=x^2+kx+15$

so, we get

$k=a+b$

$ab=15$

we are given that

'a' and 'b' are integers

so, we can find all possible factors

$15=(-1\times -15),(1\times 15)$

$15=(-3\times -5),(3\times 5)$

so, we can find k

At $(-1\times -15)$ :

$k=a+b$

we can plug values

$k=-1-15$

$k=-16$

At $(1\times 15)$ :

$k=a+b$

we can plug values

$k=1+15$

$k=16$

At $(-3\times -5)$ :

$k=a+b$

we can plug values

$k=-3-5$

$k=-8$

At $(3\times 5)$ :

$k=a+b$

we can plug values

$k=3+5$

$k=8$

So, values of k are

$k=-16,k=-8,k=8,k=16$

6 0

3 years ago

How do i do this????

PSYCHO15rus [73]

What you do is you combine like terms... so in your instance it is using m.
9m+2= 3m-10
-3m -3m
3m + 2 =-10
+10 +10
3m= 12
m= 4

8 0

3 years ago

yuson must complete 30 hours of community service. she does 2 hours each day. which linear equation represents the hours yuson h

algol [13]

Answer:

30-2x

Step-by-step explanation:

yuson has to finish am total of 30 hours in community service

she does 2 hours each day

in x days, hour of service done=2x

after x days hours of service left=30-2x

therefore the linear equation representing the hours yuson has left after x days is:

30-2x

6 0

2 years ago

Please help answer A and B

Goshia [24]

Answer:

the answer is A

Step-by-step explanation:

4 0

2 years ago

Heather writes the equations below to represent two lines drawn on the coordinate plane.

pentagon [3]

According to the represented datum, the correct answer is : equation has no solution; therefore, the system of equations has no solution because it is imposible <span> when girl should rich 0 = 60.
I am pretty sure it helps! Do hope you will agree with me.</span>

6 0

2 years ago

Read 2 more answers

using integer to describe the situation 12 protons and an atom blank 18 electrons around an atom blank​

using integer to describe the situation 12 protons and an atom blank 18 electrons around an atom blank