MATHEMATICS MIDDLE SCHOOL

Determine the solution of the system. show your work Y=5x-9 Y=2x +6

Answers

Answer 1
Answer:

Hi Brainiac


y= 5x-9

y= 2x+6

We need to solve y=5x-9 for y

Let's start by substitute 5x-9 for y in y=2x+6

y=2x+6

5x-9=2x+6

Add -2x to both sides

5x-9-2x=2x+6-2x

3x-9=6

Now add 9

3x-9+9= 6+9

3x=15

Now divide both sides by 3 so we find the value for x

3x/3= 15/3

x= 5

Now we have x :)

We gonna find the value for y by substitute  5 for x in y=5x-9

y=5x-9

y= 5(5)-9

y=25-9

y= 16

Final answer : x= 5 and y=16

                         (5,16)


It was my pleasured to help you :0 Good night.

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What two numbers add to equal 11 and multiply to equal 10

Answers

Hi There! The answer is 10 and 1. Because you add 10 and 1 to get 11 and 10 times 1 equals 10. Hope this helps.

A geometry student says; "I got lost in that lesson - I wrote down that AD/AB = AC/AB but I have no ideawhere it comes from."
Which of the following should have been the proportion that the student wrote?
answer choices:
a) AD/AB=AB/AC
b) AD/AC=AB/AB
c) AB/AD=AB/AC
d) AB/AC=AB/AD

Answers

Answer:

Therefore the choice is

a) AD/AB=AB/AC

Step-by-step explanation:

In  Δ ADB and Δ ABC  

∠A ≅ ∠A    …………..{Reflexive Property}

∠ ADB ≅ ∠ ABC      ..............{ measure of each angle is 90° given }

   

Δ ADB ~ Δ ABC ….{Angle-Angle  Similarity test}

If two triangles are similar then their sides are in proportion.

(AD)/(AB) =(AB)/(AC)\ \textrm{corresponding sides of similar triangles are in proportion}\n  

Therefore the choice is

a) AD/AB=AB/AC

Answer:

Therefore the choice is

a) AD/AB=AB/AC

Step-by-step explanation:

In  Δ ADB and Δ ABC  

∠A ≅ ∠A    …………..{Reflexive Property}

∠ ADB ≅ ∠ ABC      ..............{ measure of each angle is 90° given }

  Δ ADB ~ Δ ABC ….{Angle-Angle  Similarity test}

If two triangles are similar then their sides are in proportion.

Therefore the choice is

a) AD/AB=AB/AC

What is the percent increase from 25 to 95

Answers

280 Percent increase
280   %    increases hope that this helps

12 divided by the sum of h and 2

Answers

That translated would be:

\sf{(h+2)/(12)}
12/2+h  or   12
               ---------
                  2+h

Square A and rectangle B have the same width. The length of rectangle B is 4 cm greater than its width. The area of rectangle B is 20 cm greater than the area of square ASet up an equation and solve it to find the area of square A.

-Thanks! :D

Answers

Noting that square A is a square, this is what we have:
A = B
A^2 = B x (B + 4) + 20

I can try subbing in A to B
since A = B:

A^2 = A x (A + 4) + 20
20 = A^2 - (A x (A + 4))
20 = A^2 - (A^2 + 4A)
20 = 4A
A = 5

By the way, A is width of square A and B is the width of rectangle B in my solution,

Select the correct product.(2x + 9)(x + 1)
022 +118+9
32 + 11%+9
027-74-9
022 +112+10

Answers

Answer:

its the 3rd one

Step-by-step explanation:
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