Solve each system by elimination: -7x-6y=4 -3x+2y=20

Answers

Answer 1

Answer:

Step-by-step explanation:

-7x - 6y = 4

-9x + 6y = 60

-16x  = 64

x = -4

-3(-4)+2y=20

12+2y=20

2y=8

y =4

(-4,4)


Related Questions

NEED HELP FAST!! Thank YOU AND I WILL GIVE BRAINLIEST

Answers

Answer:

C (third option)

V = 21.66 - 4.1i

Step-by-step explanation:

Total voltage is V₁ + V₂

V₁ = 13.52 - 7.89i

V₂ = 8.14 + 3.79i

Hence add these values together and you would get the total voltage

V = 13.52 - 7.89i + 8.14 + 3.79i

V = 13.52 + 8.14 - 7.89i + 3.79i

V = 21.66 - 4.1i

9.)Cici went shopping and spent a total of $45.28. She paid
with a $100 bill. How much change did she receive? Write an
expression and solve.

Answers

Answer:

Cici received $54.72 dollars in change

Step-by-step explanation:

$100 (what she payed with) - $45.28 (how much she spent) = $54.72 (how much she got back in change)

Given the following function, find f(-4), f(0), and f(3).
f(x)=x2-4

f(-4)=
f(0)=
f(3)=

Answers

You plug in the given value for x.

F(-4)=(-4)2-4
F(-4)=-8-4
F(-4)=-12

F(0)=(0)2-4
F(0)=0-4
F(0)=-4

F(3)=(3)2-4
F(3)=6-4
F(3)=2
f(-4)= (-4)2-4
the answer is -12

f(0)=(0)2-4
the answer is -4

f(3)=(3)2-4
the answer is 2

Which set of numbers are closed under subtraction?
Natural Numbers
Integers
Irrational Numbers
Odd Numbers

Answers

The set of numbers that provide closure under subtraction are Integers

Your friend says that there is an angle whose measure is the same as the measure of the sum of its supplement and its complement.

Is your friend correct? What is the measure of the angle?

Answers

Let's check:

Let the angle be x

It's complement is 90-x

It's supplement is 180-x

x = 90 - x + 180 - x

x = 270 - 2x

3x = 270

x = 90

So the angle is 90, it's complementary is 0 and it's supplementary is 90... so 90 = 0 + 90

Can somebody help me on 14?

Answers

It isn’t them going up or down a hill. It is the speed changing

Answer:

It is the speed changing

Step-by-step explanation:

becauses it is speed vs time

what is the answer to 9/11 - 4/11

Answers

Answer:

the answer is approximately 0.4545

Step-by-step explanation:

I just searched it on google. i got you my guy

Answer: 5/11

The denominator (bottom number) stays the same when adding or subtracting fractions. In this case, you simply subtract 4 from 9 and get 5, which is your numerator (top number).

So: 9/11 - 4/11 = 5/11

2y + 12 = -3x

solve pls i have more

Answers

I believe that y=-1.5x-6 is the answer.

In the first quadrant, you start at (5,3) and move 2 units up What point will you end up on?​

Answers

Answer: 5,5 have a great day

The translated point (5, 5)

What is translation?

A translation is a geometric change in Euclidean geometry that involves moving each point in a figure, shape, or space by the same amount in one direction. A translation may alternatively be thought of as moving the origin of the coordinate system or as adding a constant vector to each point.

Given:

In the first quadrant, you start at (5,3) and move 2 units up.

Here, up means positive changes in the second value of coordinates

Translation:

(x, y) → (x, y +2)

(5,3)  → (5, 3 +2)

(5,3)  → (5, 5)

Therefore, the point is (5, 5)

To learn more about the translation in geometry;

https://brainly.com/question/2373420

#SPJ2

Susanne wants to put up a fence around her
square garden. The garden measures
11 feet on each side How much fencing
material does she need

Answers

Answer:

44 feet

Step-by-step explanation:

The garden is square and one side is 11 feet. Therefore the equation is 11 x 4

I NEED HELP!! I WILL GIVE BRAINLIEST PLUS 15 POINTS

Answers

What the top Awnser was it was right so yea

Answer:

the first one

Step-by-step explanation:

Rewrite 1/4 books 1/3 hour as a unit rate.

A. 12 books/hour
B. 1 1/3 books/hour
C. 3/4 books/hour
D. 1/12 books/hour​

Answers

The answer for this question would be C!!

Answer:

c. 3/4

Step-by-step explanation:

Convert the numbers to standard from 7.23x10^-10

Answers

Step-by-step explanation:

ok this is search from Google this is right or wrong

Question:

Convert the numbers to standard from 7.23 × 10^(-10)

Answer:

7.23 billionths or 0.000000000723

Explanation:

First, convert the standard form of 10^(-10) to 1 ÷ 10^(10). Thus, the standard operation would be:

7.23 ÷ 10^10 or 7.23 ÷ 10,000,000,000

Hence, you could write it in a reciprocal of a billion, which is a billionth. You could write it in the form of 7.23 billionths or just write it 0.000000000723.

Hopefully this answer helps you.

an equivalent name for 96??

Answers

Answer:

Ninety-six

Step-by-step explanation:

An equivalent name for 96 is ninety-six. Word form is equivalent to number form. I hope I helped!

Calculate the density of a material that has a mass of 100 g and a volume of 25
cm 3 .

Answers

4g/cm^3

D = M/V
100g/25cm^3 = 4g/cm^3

For some reason, in our history class, there are 14 more boys than there are girls. If a total 32 students are in the class, how many boys and how many girls are there

Answers

Answer:

We can assume X is the number of girl, so the number of boy should be X+6.

 

Based on question, we can get X+X+6=32

2X+6=32

2X=26

X=13

So the answer is, 13 girls are in the class.

Step-by-step explanation:

At SMS, students were encouraged to wear school colors of blue and white. 900 Students wore their school colors while 300 students did not. What percent of the school population did not wear school colors?

Answers

Answer:

audududheyeheheh gay

What is the equation of the line?

Answers

Answer:

y = 2/3x + 4

Step-by-step explanation:

Hope This Helps!

Plz Mark Brainliest!

Factor
2) x2 – 3x – 18

Answers

Answer:

By inspection you need 2 numbers that multiply together to 18 and sum to 3. These numbers are 6 and 3. Therefore we have to find the value of x but we dont have that so we have this:

x to the power of 2-3x - 18 = ( X - 6) ( x + 3)

Please identify the common angles and sides or if there are non. Explain all work please!

Answers

Answers:

Common angles: ΔBGC and ΔGDC

Common sides: ΔGE and ΔAG

A common angle is a triangle that exists in two or both of the triangles.

Here, the common angles should be ΔBGC and ΔGDC.

These two angles are triangles, and they consist in both triangles.

A common side is when two angles have one vertex in the same area.

Here, we see that the common sides are ΔGE, because they intersect.

Another common side we see here is ΔAG, because they also intersect.

Hope this answer helps you!

Find the principal. Annual rate of interest= 11% Period=3 years Total interest= 825 rupees Principal rupees​

Answers

Answer:

I = $ 1,937.50

Step-by-step explanation:

Find the missing side lengths (Use sqrt in place of a square root symbol)

Answers

Step-by-step explanation:

Because this is a right triangle and it is given that one angle is 45 than also the ather angle is 45 so this triangle has 2 equal sides.So also the ather side is 6 .

Hypotenuse can be found by pythagorean theorem

6^2+6^2=x^2

36+36=x^2

x=√72

D. Neither
I will give brianlest to whoever is right

Answers

Answer:

Negative Infinity

Step-by-step explanation:

It is a negative slope, therefore as x moves towards positive infinity, y will move towards negative infinity.

I need help? I don’t know what to dooooooo

Answers

Your suppose to graph where the line is

12. ROS
CALCULATE THE ARC
LENGTH. ROUND TO THE
NEAREST TENTH.
180
63 11
IQ
S

Answers

Answer:

576.97

Squared

Angle ABC is a right angle. The measure of angle ABD is 65 degrees. The measure of angle DBC is x degrees. What is the value of x?

Answers

Answer:

25 degrees

Step-by-step explanation:

Angle ABC is a right angle. This means it has a value of 90 degrees. When you add that to angle ABD, which has 65 degrees, you get 155 degrees. To find the measure of angle DBC you subtract 155 from 180. Your answer is 25 degrees.

Answer:

25 degrees

Step-by-step explanation:

Took the test

Can somebody help me plz with this math problem!!

Answers

Answer:

Step-by-step explanation:

.

Answer:

thxxxxxxxxxx for the points

Step-by-step explanation:

Find the value of x ?

Answers

Answer:

x=10

Step-by-step explanation:

6x+4+12x-4=18x=180

18x=180

x=10

..........................Its ...........................going ...................to ..............be the,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,second one

Life gym charges a one-time fee to join of $40 and $20 each month. Write an equation that models the total cost, y, for x months of being a member at this gym.

Answers

Answer:

40+20x=y

Step-by-step explanation:

Write an equation of the line. I need help plz

Answers

Okay now the formula for a linear equation is y = mx + b . We are only supposed to substitute the m ( slope ) and b ( y intercept ) and you have all of that information.

Therefore, the answer would be
y = 3x - 2
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