All categories

2 years ago

Please help!! I'll give 50 points

Mathematics

2 answers:

Scrat [10]2 years ago

3 0

Answer: y=0 and x=3

Step 1: Solve for x in 2x+9y=6.

$2x+9y=6$

$2x=6-9y$ (Subtract 9y from both sides)

$x=3 - 4.5y$ ( Divide both sides by 2)

Step 2: Replace x with 3-4.5y

$-7x - 8y = -21\\-7(3-4.5y) - 8y = -21\\$

Step 3: Solve for y

$(-21)+31.5y-8y=(-21)$ (By looking at this, we can determine that y=0)

Step 4: Replace y with 0

$2x+9y=6\\2x+9(0)=6\\2x=6\\$

$x=3$ (Divide both sides 2)

Therefore, y=0 and x=3

lesya692 [45]2 years ago

3 0

Answer: y=0 and x=3

Step-by-step explanation:

You might be interested in

A triangle has vertices (-1, 2), (3, 1), and (7.2). What is the approximate perimeter of the triangle? Round your answer to the

Inessa [10]

Answer

16.25

Step-by-step explanation: <em><u>To The Nearest Hundredth</u></em>

(-1, 2), (3, 1)

(3, 1), (7, 2)

(3, 1), (7, 2)

So our answer is =

<u>hope it works for you!</u>

7 0

2 years ago

Three times the sum of a number and seven is greater than five times the number less thirteen

Vlad [161]

3x(d+7) < 5d-13 (I think it is

8 0

2 years ago

I need help so please help

arlik [135]

Answer:

M= sq root of 2 and N= sq root of 5 would be irrational

Step-by-step explanation:

These two answer choices are irrational because they cannot be shown or expressed as a fraction.

6 0

2 years ago

Solve for x. X/3 = 5/8

Aleks04 [339]

The best way to solve this one would be simple cross multiplying. Multiply the top of one side with the bottom of the other side. In this problem you need to multiply X with 8 and multiply 3 with 5. You'll get an equation of 8X=15, then divide both sides by 8 so that you get X by itself. Your answer will them be X=1.875

3 0

3 years ago

Nathan wants to use coordinate geometry to prove that the opposite sides of a rectangle are congruent. He places parallelogram A

valentina_108 [34]

<h3><u>Answer:</u></h3>

The formula determine the distance from C to D is:

$\sqrt{(0-a)^2+(-b)^2}=\sqrt{a^2}=a$

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

The formula that can be used to determine the distance from point C to point D is:

$\sqrt{(0-a)^2+(-b)^2}=\sqrt{a^2}=a$

We know that distance between two points A(a,b) and B(c,d) is equal to the length of the line segment AB and is calculated by the help of the formula:

$\sqrt{(c-a)^2+(b-d)^2}$

So, here we have:

(a,b)=(a,b) and (c,d)=(0,b)

3 0

2 years ago