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3 years ago

What are these answers?

Mathematics

1 answer:

Inessa05 [86]3 years ago

7 0

44
16
28
32
i think this is the answer

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What is the slope, and what is the y-intercept of the line?

Oliga [24]

$General\ equation\ for\ line\ in\ slope\ intercept\ form:
\\\\y=ax+b\\
 a-slope\\ 
b-intercept\\\\ 
y=\frac{5}{4}x+9\\\\
slope=\frac{5}{4}\\\\intercept=9$

4 0

3 years ago

In need of some help! Thank you in advance. 100 points <3

Anni [7]

Answer:

the equation (x-4)^2-17=8 has two solutions because it is in a quadratic form.

(x-4)^2-17=8

x²-8x+16-17-8=0

x²-8x-9=0

Doing middle term factorization

x²-9x+x-9=0

x(x-9)+1(x-9)=0

(x-9)(x+1)=0

either

x=9

x=9or

x=9orx=-1

x^2+4x+3=0:

Doing middle term factorization

x²+3x+x+3=0

x(x+3)+1(x+3)=0

(x+3)(x+1)=0

either

x=-3

x=-1

Josh’s solution is incorrect because he missed x=-3.

3.

x^2-6x+7=0

By using quadratic equation formula:

Comparing above equation with ax²+bx+c=0

we get

a=1

b=-6

c=7

Now

we have

x= $\frac{ - b ± \sqrt{ {b}^{2} - 4ac} }{2a}$

x= $\frac{ 6± \sqrt{ {-6}^{2} - 4*1*7} }{2}$

x= $\frac{ 6±2\sqrt{ 2}}{2}$

x= ${ 3±\sqrt{ 2}}$

Taking positive

x= ${ 3+\sqrt{ 2}}$

taking negative

x= ${ 3-\sqrt{ 2}}$

4 0

3 years ago

-4+2(12) ———— -3(-3)-(-1)

dsp73

Answer:

20/10 is 2

final answer is 2

8 0

3 years ago

The solution x=7 is a solution to which of the following equations

lbvjy [14]

We need the equations.

6 0

4 years ago

10 points Help Me Please I will give brainiest

Effectus [21]

Answer:

The slope is 1/2

Step-by-step explanation:

To find the slope you use the formula rise/run

The rise is the second y coordinate minus the first y coordinate

The run is the second x coordinate minus the first y coordinate

Step one:

Take 2 points: I used (2,1) and (4,2)

Step two:

Use the formula

2-1/4-2

The answer is the slope of the line

The slope is 1/2

5 0

3 years ago