The problems in the leilatu Tigil-dilu Culum . -19-12

Can you help me evaluate the expression: 2*(3+1)+2

levacccp [35]

2*(3+1)+2=

2*4+2=

8+2=

=10

8 0

3 years ago

Read 2 more answers

M=7 n=8 n+9m Please help it’s due in 10 minutes-

AleksAgata [21]

***P.E.M.D.A.S.***

N+9m M=7 N=8
8+9(7)
8+63
71

3 0

3 years ago

a jet airplane cruises at a speed of 540 mi/h. write and solve an equation to find how far it travels in 15 minutes.

Svetllana [295]

All you have to do is multiply 540 by 15.

6 0

3 years ago

Use elimination I NEED IT HURRY

Vera_Pavlovna [14]

Answer:

(5,-2)

Step-by-step explanation:

The given system is:

$3x+2y=11$

$2x+6y=-2$

Both equations are in the same form. That form being standard form, $ax+by=c$ .

We need one of the variable columns to contain opposite terms (we will add if this is the case) or same terms (we will subtract if this is the case).

To do this we will either need to multiply both equations or one equation.

I really like the column with the variable $y$ right now because the least common multiple of 2 and 6 is 6 and 6 is already a coefficient of one of the $y$ variables.

So This means I will need to either choose to multiply the first equation by 3 or -3. It is your choice or mine in this case.

I'm going to choose to multiply the first equation by -3.

This will give me my system as:

$-9x-6y=-33$

$2x+6y=-2$

I will now add the equations. This is method is called elimination because in this step one of the variables get eliminated.

$-7x+0y=-35$

$-7x+0=-35$

$-7x=-35$

$x=\frac{-35}{-7}$

$x=5$

So now we can find the $y-$ coordinate using of the initial equations along with $x=5$ .

I choose $3x+2y=11$ along with the $x=5$ :

$3(5)+2y=11$

$15+2y=11$

$2y=11-15$

$2y=-4$

$y=\frac{-4}{2}$

$y=-2$

So the solution is (5,-2).

Let's confirm the answer through a check.

I will plug our "solution" into both equations.

If both equations render true, then the "solution" is confirmed and I will refer to it as just a solution without the quotation.

$3x+2y=11$ with $(x,y)=(5,-2)$ :

$3(5)+2(-2)=11$

$15+(-4)=11$

$11=11$ is true.

$2x+6y=-2$ with $(x,y)=(5,-2)$ :

$2(5)+6(-2)=-2$

$10+(-12)=-2$

$-2=-2$ is true.

Since both equations ended up being true, (5,-2) is the solution of the system.

6 0

3 years ago

The given set together with the given operations is not a vector space. list the properties of the definition that fail to hold.

Triss [41]

Let us look at all the axioms of a vector space and see which axioms are broken.
1) Associativity of addition
 $[(1,1)\bigoplus(2,2)]\bigoplus(3,3)=(6,6)$
$[(1,1)\bigoplus[(2,2)]\bigoplus(3,3)]=(6,6)$ 
It's trivial to see this one holds.
2)Commutativity of addition
 $(1,1)\bigoplus(2,2)=(2,2)\bigoplus(1,1)=(3,3)$
This one holds.
3)Identity element of addition
This means that we have zero vektor. It is pretty obvious we do, it is (0,0).
 $(a,b)\bigoplus(0,0)=(a,b)$
4)Inverse elements of addition
This means that for each element in V there exists element -v such that v+(-v)=0.
We do have inverse elements.
$(a,b)\bigoplus(-a,-b)=(a-a,b-b)=0$
5)Compatibility of scalar multiplication with field multiplication
This one holds.
$a[b(c,d)]=ab(c,d)$
6)Identity element of scalar multiplication
Identity element of scalar multiplication is simply 1.
$1\cdot (a,b)=(a,1\cdot b)=(a,b)$
7)Distributivity of scalar multiplication with respect to vector addition. Let's look at the definition.
$a[(b,c)\bigoplus(d,e)]=a(b,c)\bigoplus a(d,e)$
Now let's look at the example:
$a[(1,1)\bigoplus(2,2)]=a(3,3)=(3,3a)$
$a(1,1)\bigoplus a(2,2)=(1,1a)\bigoplus(2,2a)=(3,3a)$
This one hold too.
8)Distributivity of scalar multiplication with respect to field addition
Definition of this one is:
$(a+b)(c,d)=a(c,d)+b(c,d)$
Let's take a look at the example:
$(3+2)(1,2)=5(1,2)=(1,10)$
$(3+2)(1,2)=3(1,2)+2(1,2)=(1,6)+(1,4)=(2,10)$
So this one doesn't hold.
The final answer would be distributivity of scalar multiplication with respect to field addition.
Please note vectors, in this case, are (a,b) and that I did not use the dot to indicate scalar multiplication.

8 0

3 years ago

The problems in the leilatu Tigil-dilu Culum.-19-12​

The problems in the leilatu Tigil-dilu Culum.-19-12