Mathematics High School

Solve by elimination
-6x+y= -2
-3x-6y= 12

Answers

Answer 1

Answer:

Ans: x=0

       y= -2

Step-by-step explanation:

-6x+y= -2--------- (1) × 6

-3x-6y= 12--------(2) × 1

-36x+6y= -12-----(3)

-3x-6y= 12--------(2)

(3)+(2)

-36x+6y+(-3x-6y) = -12+12

⇒ -36x+6y-3x-6y = 0

⇒ -36x-3x = 0

⇒ -39x=0

⇒ x= 0/-39

∴ x = 0

Substitute x = 0 into (1)

-6x+y= -2

⇒-6(0)+y= -2

⇒0+y= -2

∴y = -2

Ans: x = 0

       y = -2

Check:

-6x+y= -2--------- (1)

= -6(0)+(-2)

= 0 - 2

= -2 ✔

-3x-6y= 12--------(2)

= -3(0)-6(-2)

= 0+12

= 12 ✔

Related Questions

The base of triangle M is four times the base of tri-
angle N, while the height of triangle N is half the
height of triangle M. The area of triangle M is how
many times that of triangle N ?

Answers

Answer:

two times

Step-by-step explanation:

ΔM:  let 'h' = height; let '4b' = base

ΔN:  let 'h/2' = height; let 'b' = base

Area (ΔM) = 2bh

Area (ΔN) = bh

How do you solve this equation ? 25 − 3 x = 40

Answers

Answer:

x = -5

Step-by-step explanation:

25 - 3x = 40

3x = -15

x = - 5

Answer:

x = -5

Step-by-step explanation:

25 − 3x = 40

-3x = 15

x = -5

If John had 9 apples and doubles them 5000 times how many apples would he have

Answers

He would have 45000 apples, right?

Evaluate 10% of 5000

Answers

Answer:

500

Step-by-step explanation:

that is the procedure above

500 I hope this helps you 10% of 5000= 500

A deep-sea diver must descend and ascend in short steps to equalize pressure on his body. If
the diver rises toward the surface too fast, he may suffer from a physical condition called “the bends.”
Suppose the diver started at 100 feet below the surface and rose in five steps of 15 feet each. Use an integer
to describe his new position in relation to the water surface.

Answers

Answer:

15x=100?

Step-by-step explanation:

this equation would show how many steps it takes to get to the surface sorry if this isnt the answer u wanted

Answer:

-25

Step-by-step explanation:

he rose 75 feet from being under 100 feet of water, making him 25 feet below the water's surface

what is the slope of this line? y=-3x+1

Answers

Answer:

The slope is -3, also written as -3/1.

Answer:

-3

Step-by-step explanation:

it is simply the (m) in y = mx + b

m is the slope

and b is the y intercept

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Estimate 3 pi to the nearest whole number

Answers

Answer:

When you round pi, which is equal to 3.14, to the nearest whole number, the answer is 3.

Step-by-step explanation:

π=3.1415926

π=3.14

nearest whole number=3

2,6, 18, 54,162
The common ratio ""is3
Is this right?

Answers

Answer:

yes it is

Step-by-step explanation:

Find the measure of the arc

Answers

Answer:

104, 52 degrees

Step-by-step explanation:

A whole circle is 360 degrees.

So ark YX = 360-110-146=104

Z=1/2*YX=52

Measure of arc YX = 104°
Measure of
Explanation:

1) 110+146+x=360
256+x=360
x=104°

2) Intercepted arc = 1/2 inscribed angle

T= 3x +4y work out the value of T when x = 5 and y = -7

Answers

Answer:

T=-13

Step-by-step explanation:

substitute T=3*5+4*(-7)

the product:T=15-28

the sum:T=-13

A 9 year old boy has $12 saved.
He decides to start saving on a regular basis because he selss aluminum
cans
He figures out that he can save $2.50 per day.
What is the total amount he will have saved after 1 day?
2 days?
3 days?
17days?
X days?
Organize the information however you think is best and find out the totals.
Do...
g
in

Answers

Answer:

.............................

what do you means by. India gate
​

Answers

Answer:

The India Gate (formerly known as the All India War Memorial) is a war memoria)

Step-by-step explanation:

it's a place

A line's y-intercept is 1, and its slope is -5. What is its equation in
slope-intercept form?
help please

Answers

y=-5x+1

Slope intercept form is y=mx+b

m is slope and b is the y-intercept
y= -5x+1
As general equation of y-intercept is y=mx +b

Hope it helps!

formula for surface area of triangular prism

Answers

Answer:

A = bh + L(s1 + s2 + s3)

Step-by-step explanation:

The formula for finding surface area of triangular prism is A = bh + L(s1 + s2 + s3).

Triangular prisms have their own formula for finding surface area because they have two triangular faces opposite each other. The formula A=12bh is used to find the area of the top and bases triangular faces, where A = area, b = base, and h = height

Substitute w = 4 into the following expression
10 – 4w​

Answers

Answer:

-6

Step-by-step explanation:

Substitute as in replace "w" with 4

10-4(4)

Multiply -4 and 4

-16

10-16=-6

Hope this helps

Answer:

-6 it wouldnt let me post this without having 20 letters in my answer

Step-by-step explanation:

10 - 4*4 = -6.

Which of the following is not a possible value for a probability? (A p e x)

A. 0.001

B. 1/16

C. 0.82

D. 5/4

Answers

Answer is D

Explanation: step by step process

Please help me with this. Ill give you a brainliest.

Answers

Answer:

7. Circumcenter is (5,8)

8. Circumcenter= (-4,-5)

9. Circumcenter= (-4,9)

10. Circumcenter= (5.5, -5.5)

Can someone really help
Me !

Answers

y=11. you do what’s in the parentheses first then multiply it by three. so take 45 divided by three and you get 15 and solve for Y

A circle with the centre (0,0) has an equation of x2 + y2 = 169
a. What is the radius?

Answers

165 is the radius because 169-169 is 0
Your answer is going to be 0

How many and what type of solutions does 7x^2−4x+3 have?

1. 1 rational solution
2. 2 rational solutions
3. 2 irrational solutions
4. 2 nonreal solutions

Answers

Answer:

4. 2 nonreal solutions.

Step-by-step explanation:

We need to use discriminant,

for ax²+bx+c=0

The discriminat is b²-4ac

If the discriminant is,

→ less than 0, then 0 real solutions

→ equal to 0, then 1 real solutions

→ more than 0, then 2 real solutions

Given that,

7x²-4x+3=0

a=7, b=-4, and c=3

→ (-4)²-4(7)(3)

→ 16-84

→ -68

You can see this is less than 0, then non real solutions. [2 nonreal solutions]

asma is drawing a picture of a tree.she drawss a 15m tree as 3cm in her drawing book. if a fruit acctualy hangs from branch 3 m from the ground how high must asma draw it to keep the proportion correct?

Answers

Answer:

0.6 cm

Step-by-step explanation:

she divided the the height of the tree 500, so the same factor has to be applied to everything else

3m * 1/500 = 0.6cm

Put in in order from least to Greatest 3,-18,5,4,-2,6

A)-2,3,4,5,6-18

B)-2,18,3,4,5,6

C)-18,-2,3,4,5,6

D)3,4,5,6-2,-18

Answers

smalsksleehekbskdnejeoejekd

Answer:

A.

Step-by-step explanation:

-2,3,4,5,6-18 from least to greatest

Please Help I'll give brainliest

Answers

Answer:

259.8

Step-by-step explanation:

259.8. Is the answer

please help asap find x

Answers

Answer:

C

Step-by-step explanation:

Given 2 intersecting chords in a circle, then

The product of the parts of one chord is equal to the product of the parts of the other chord, that is

x × x = 4 × 9

x² = 36 ( take the square root of both sides )

x = [tex]\sqrt{36}[/tex] = 6 → C

(23 points)I need help really fast my last question

• exponential and linear growth
•Trolls Will be reported aww lol
Please I just need this answer right

Answers

Answer:

It's Option A. the more detailed answer is in you other, exact same, question.

note that others only get half of the points you pay. the are split between two answers

What is the solution to this equation? X/4 =-12
A. x = 48
B. X= -3
C. x = -48
D. X= 3

Answers

Answer:

C. x=-48

Step-by-step explanation:

x/4=-12

multiply both sides by 4

4x/4=4 (-12)

simplify

x=-48

Two radar stations 2.5 miles apart are tracking an airplane. the straight-line distance between Station A and the plane is 7 miles. the straight-line distance between station B and the plan is 9 miles. What is the angle of elevation from Station B to the plane?

Answers

Answer: Hi the answer would be 32 Degrees

Step-by-step explanation:

The answer to this question is 32 degrees

Describe the general properties of rotations. Include a discussion of the properties of rigid transformations ,and line segments connecting corresponding points to each other and to the center of rotation

Answers

Answer:

A rotation is a rigid transformation, sometimes called an isometric transformation, that moves every point of the pre-image through an angle of rotation about the center of rotation to create an image. Rotations preserve size, rotations of 360 map a figure to itself, and lines connecting the center of rotation to the pre-image and the corresponding point on the image have equal length.

Step-by-step explanation:

Here man this is right

Answer:

Here is the sample response

Step-by-step explanation:

Sample Response: Rotations are rigid transformations, which means they preserve the size, length, shape, and angle measures of the figure. However, the orientation is not preserved. Line segments connecting the center of rotation to a point on the pre-image and the corresponding point on the image have equal length. The line segments connecting corresponding vertices are not parallel.

Given that A , B and C are the vertices of a triangle and that ∠ C B A = 80 ∘ and ∠ A C B = 35 ∘ , label the triangle with the correct vertices, A , B , or C . Select the correct answer from the options below.

Answers

Answer:

Step-by-step explanation:

Part 2: Questions



What is the total cost of the entire bill (all four meals), including tip? 153.88


Write an expression using fractions to show how to determine the amount that each person will pay. Then calculate each person's contributions showing all steps in long division.





If each person paid an equal amount, who would save the most money? Explain your reasoning using at least two complete sentences.

I NEED HELP ON THE LAST 2 QUESTIONS you can use this but make sure you put some other names

Answers

Answer:

Answer:

Total amount ÷ number of person's

Step-by-step explanation:

for example:- there are four persons and the total amount they have to pay is ₹2000

Now,

contribution of each person = total amount ÷no.of persons

= ₹(2000 ÷4)

=₹500

Step-by-step explanation:

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