All categories

3 years ago

Need help ASAP Will mark u brainlyest answer number 3

Mathematics

1 answer:

Law Incorporation [45]3 years ago

7 0

Answer:

Sub the values for x and y into the equations.

Step-by-step explanation:

x = 2

y = 1

Y = 2x - 3

1 = 2(2) - 3

1 = 4 - 3

1 = 1

Y = -½x + 2

1 = -½(2) + 2

1 = - 1 + 2

1 = 1

You might be interested in

Hunter and his children went into a movie theater and will buy bags of popcorn and drinks. Each bag of popcorn costs $5.50 and e

Yuri [45]

Answer:

......

Step-by-step explanation:

.......

5 0

3 years ago

Read 2 more answers

What is the correct substitution? evaluate. 3m when m = -9 and n = -2

Vinvika [58]

Hi my name is Vanessa i'm Boribaby. I just wanted to let you know that answers A and C are the exact same thing.

I think I know your answer.... if any of your answers say 3(-9)(-2) then that is your answer.

Please know that the percentage of my answer is 50/50. I hope this help!!!! Good luck!!!!

8 0

3 years ago

Anybody help me to solve this question.

Mumz [18]

Answer:

$\dfrac{1}{(b-c)},\dfrac{1}{(c-a)} ,\dfrac{1}{(a-b)} are\ in\ AP$

Step-by-step explanation:

Given that $(b-c)^2, (c-a)^2 , (a-b)^2$ are in AP

To prove: $\dfrac{1}{(b-c)},\dfrac{1}{(c-a)} ,\dfrac{1}{(a-b)}$ are in AP

From given as we know if p , q, r are in AP then 2q= p+r.

$2(c-a)^2= (b-c)^2+(a-b)^2\\\\\Rightarrow 2(c^2+a^2-2ac)=b^2+c^2-2bc+a^2+b^2-2ab\\\\\Rightarrow 2c^2+2a^2-4ac= 2b^2+c^2+a^2 -2bc-2ab\\\\\Rightarrow a^2+c^2-2b^2-4ac= -2bc-2ab\\\\\Rightarrow a^2-2b^2+c^2= 4ac-2bc-2ab$

Now

$\dfrac{1}{(b-c)},\dfrac{1}{(c-a)} ,\dfrac{1}{(a-b)}2\dfrac{1}{(c-a)} =\dfrac{1}{(b-c)}+\dfrac{1}{(a-b)}\\\\\Rightarrow \dfrac{2}{(c-a)}= \dfrac{a-b+b-c}{(b-c)(a-b)} \\\\\Rightarrow \dfrac{2}{(c-a)}= \dfrac{a-c}{(b-c)(a-b)} \\\\\Rightarrow2(b-c)(a-b) = (c-a)(a-c) \\\\\Rightarrow 2(ab-b^2-ac+bc)= -(a-c)^2\\\\\Rightarrow 2ab- 2b^2-2ac+2bc = -a^2-c^2+2ac\\\\\Rightarrow a^2-2b^2+c^2=4ac-2ab-2bc$

Which is the result of AP

Hence proved

6 0

3 years ago

Plz help as soon as possible

igor_vitrenko [27]

No 8.

Use proportion time to return home = (52 * 6) / 60 = 52/10 = 5.2 hours

That is 5 hours 12 minutes

6 0

4 years ago

Which expression represents the area of the rectangle <br>(2x+7)(4x+5)?

zhenek [66]

So we'll do FOIL (first, outer, inner, last)

The equation is (4x+5)(2x+7)

First, 4x·2x=8x²

Outer, 4x·7=28x

Inner, 5·2x=10x

Last, 5·7=35

Add like terms and you get:

8x²+38x+35

3 0

3 years ago