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3 years ago

I need this a.s.a.p please

Mathematics

1 answer:

vladimir1956 [14]3 years ago

6 0

Answer:

You would multiply 38.3 time .40 which is the 40%

this would give us

=15.32

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Find the point of intersection (if any) of the following pairs of lines: a) x – 2y +1=0 2x + 3y – 7 = 0 b) x-2y+11=0 -x+2y-13 =

pychu [463]

Answer:

a) (11/7, 9/7)

b) There's no point of intersection

Step-by-step explanation:

a) x - 2y + 1 = 0

2x + 3y - 7 = 0

To find the point of intersection, we need to solve the system of equations and the result will be the point of intersection (x,y)

$x-2y+1=0\\x= 2y-1$

Now we substitute x in the second equation:

$2x+3y-7=0\\2(2y-1)+3y-7=0\\4y-2+3y-7=0\\7y-9=0\\y=9/7$

Now we substitute y in our first equation.

$x-2y+1=0\\x-2(9/7)+1=0\\x-18/7+1=0\\x=18/7-1\\x=11/7$ .

The point of intersection is (11/7, 9/7)

b) x -2y +11 =0

-x + 2y - 13 =0

We are going to follow the same procedure:

$x-2y+11=0\\x=2y-11$

$-(2y-11)+2y-13=0\\-2y+11+2y-13=0\\0y=2\\0=2$

Since this system of equations doesn't have a solution, the system has no point of intersection.

5 0

2 years ago

Whats the answer to 30 less than 10

Deffense [45]

We are looking for a new number which is 30 less than 10. We will get the new number by subtracting 30 from 10. We write it down as: 10-30=-20

And finally the solution for: What number is 30 less than 10? is -20

Hope this helps!!

6 0

2 years ago

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Which model is NOT a function? (i accidentally clicked on b ignore that lol)

olga_2 [115]

Answer:

Step-by-step explanation:

It's the only one where an x-axis has more than one y-axis.

I hope this explanation helps.

8 0

2 years ago

Find the intercept form of y=2(x-1)(x+5)

elena-14-01-66 [18.8K]

I think y=2x^2+8x-10
In case u don't know ^2 means square so don't put ^2 put the 2 next to the x on top cuz some ppl get confused
hoped I helped!:)

3 0

3 years ago

Please help me?<br><br> please and thanks

AVprozaik [17]

Answer:

- $\frac{35}{2}$

Step-by-step explanation:

-5 ÷ $\frac{2}{7}$ = 17 $\frac{1}{2}$

17 $\frac{1}{2}$ = - $\frac{35}{2}$

8 0

2 years ago

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