3 years ago

Please help with 5 questions! THANK YOU FOR ANSWERING.

Mathematics

1 answer:

-BARSIC- [3]3 years ago

8 0

1) 6x-7y=-11
2) x=-2
3) y=-4x+1
4) y-5=3(x-1)

You might be interested in

Draw a model, and write an equation to represent "4 times as many as 3 is 12." explain your work

Marina CMI [18]

I dont know the answer sorry am a biginner

7 0

3 years ago

Read 2 more answers

What is the value of a?-2(a-8)+6a=36

saul85 [17]

$-2(a-8)+6a=36 \\ \\ -2a + 16 + 6a = 36 \\ \\ 4a + 16 = 36 \\ \\ 4a = 36 - 16 \\ \\ 4a = 20 \\ \\ a = \frac{20}{4} \\ \\ a = 5 \\ \\$

The final result is: a = 5.

8 0

3 years ago

*what shape is the cross section <br> (giving brainliest if correct !)

9966 [12]

Answer:

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Evaluate the expression. | -12 | - |8|

LenaWriter [7]

Answer:

it is 12 - 8

Step-by-step explanation:

The absolute value of -12 is 12. The absolue value of 8 is 8.

12 - 8 = 4.

3 0

3 years ago

Read 2 more answers

What types of solutions will a quadratic equation have when the discriminant b2 − 4ac in the quadratic formula is a perfect squa

netineya [11]

<em>The discriminant must be zero.</em>

Step-by-step explanation:

A Perfect-Square Trinomial is given by the form:

$(\alpha x \pm \beta)^2=(\alpha^2x^2 \pm 2\alpha x \beta + \beta^2)$

The discriminant in the quadratic formula is:

$\Delta=b^2-4ac \\ \\ \\ Here: \\ \\ a= \alpha^2 \\ \\ b=2\alpha \beta \\ \\ c=\beta^2 \\ \\ \\ So: \\ \\ \Delta=(2\alpha \beta )^2-4(\alpha^2)(\beta^2) \\ \\ \Delta=4\alpha^2 \beta^2-4\alpha^2 \beta^2=0$

So in order to get a perfect square,<em> the discriminant must be zero.</em>

<h2>Learn more:</h2>

Discriminant: brainly.com/question/1537997

#LearnWithBrainly

4 0

3 years ago