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3 years ago

28 and -11 find the quadratic trinomial

Mathematics

1 answer:

hodyreva [135]3 years ago

7 0

Answer:

-7 and -4

Step-by-step explanation:

Simce 11 is a prime number, only 11 and 1 give us eleven and do not add up to give 28 so we find factors of 28 that'll add up to give us negative 11 and multiply to give us 28.

factors of 28: 1,2,4,7,14,28 -1,-2,-4,-7,-14,-28

Remember a positive integer has negative factors as well as a negative value times another negative value gives a positive value.

Two number that add to give -11 will be -4 and -7

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Passing through(-1,8) and parallel to the line whose equation is 8x-9y-2=0

notka56 [123]

<h3>Answer:</h3>

y = 8/9x + 80/9

<h3>Step-by-step explanation:</h3>

<u>We are given;</u>

Equation of a line as 8x -9y -2 = 0
Coordinates (-1,8)

We are required to determine the equation of a line parallel to the given line and passing through a point (-1,8)

<h3>Step 1: Determine the Gradient of the given line </h3>

When an equation is written in the form y = mx + c, m is the gradient.
Therefore; we could write the equation 8x -9y -2 = 0 in the form of y= mx + c

9y = 8x -2

y = 8/9x - 2/9

Therefore, the slope, m = 8/9

<h3>Step 2: Determine the equation of the line</h3>

We need to know that parallel lines have the same gradient
Therefore, the slope of the line in question is 8/9
It passes through a point (-1, 8)

We can therefore, determine the equation;

Taking another point, (x,y)

$\frac{y-8}{x+1} = \frac{8}{9}$

9(y-8) = 8(x+1)

9y - 72 = 8x + 8

9y = 8x + 8 +72

9y = 8x + 80

y = 8/9x + 80/9

Therefore, the equation of the line is y = 8/9x + 80/9

4 0

4 years ago

Which would be an equivalent way to write y=2−3x?

Ipatiy [6.2K]

Some are
y-2=-3x
y+3x=2
3x=2-y

6 0

4 years ago

Read 2 more answers

The ratio of the lengths of the sides of a triangle ABC is 3:4:6. M, N, and K are the midpoints of the sides. Perimeter of the △

juin [17]

Given that in a trianlgle the sides AB, BC, CA are in the ratio 3:4:6.

Let AB = 3k, BC = 4k and CA = 6k.

Then perimeter =3k+4k+6k = 13k

M, N, K are mid points of the sides.

By mid point theorem MN = 3k/2, NK = 4k/2 and KM = 6k/2

Hence perimeter of MNK = 13k/2 =5.2 (given)

Solve for k

k=2(5.2)/13 = 0.8

Hence sides are

AB = 3k = 3(0.8) = 2.4 in

BC = 4k= 3.2 in

CA = 4.8 in

7 0

3 years ago

9×3 n =3 powered by 7 slove n<br>

aleksandrvk [35]

Answer:

Step-by-step explanation:

9 × 3n= 3^7

9×3n= 2187

27n= 2187

n= 2187/27

= 81

Hence n= 81

5 0

3 years ago

I NEED MAJOR HELP PLEASE

ehidna [41]

Answer:

1st box in justification is going to be subtraction property.

2nd box is multiplication property.

1 box in steps is going to be (2/3y)=-6

2nd box in steps (2/3y)*(3/2)=-6(3/2)

3rd box in steps y=-9

Step-by-step explanation:

you're basically trying to solve for y. trying to get it by it self.

if you want me to explain it further down, you can tell me.

and I hope that helped

8 0

3 years ago

28 and -11 find the quadratic trinomial​

28 and -11 find the quadratic trinomial