solve this system using elimination. 3x - 4y = -5, -10x + 4 = 12

Answers

Answer 1

Answer:

x = -4/5, y = 13/20

Step-by-step explanation:

-10x + 4 = 12

-10x = 8

x = -4/5

3x - 4y = -5

3(-4/5) - 4y = -5

-12/5 - 4y = -5

-4y = -13/5

y = 13/20

Double check:

3x - 4y = -5

3(-4/5) - 4(13/20) = -5

-12/5 - 13 = -5 (true)


Related Questions

Find the area. Answer without units

Answers

I think it would be 105


19+15+32+13+26

A polygon has the following coordinates: A(6,-7), B(1,-7), C(1,-4), D(3,-2), E(7,-2), F(7,-4). Find the length of BC

Answers

Answer: B= 2,4

C=8,1

Step-by-step explanation:

Answer:

I believe its 5 units!

Step-by-step explanation:

I need help with this geometry question

Answers

Answer:

24

Step-by-step explanation:

[tex]30 \frac{1}{6}[/tex]≈

Answers

Hello,

The answer is: 181/6 or 30.16667

Im not sure how to do this math question y=2x graphing

Answers

X is the bottom and y is going up
Start at one at the bottom and times by two so 2. Do this for all the numbers on the x axis
Answers
(1,2). (2,4) (3,6) (4,8) (5,10)
Then connect these coordinates

A number x increased by 6, and then sum is doubled

Answers

The equation would be 2(x+6)

Hope this helps

Have a great day/night

Feel free to ask any questions

IF i make 525 dollars
a second how long
will it take to make
2 million dollars

Answers

Answer:

ewan ko sorry kailangan lang ng points

Answer:

You would make 2 million dollars in 63 minutes, sure would be nice too.

Step-by-step explanation:

Find the surface area of the cylinder: Use 3.14 for
2 cm
15 cm
A. 100.48 cm
B. 97,43 cm
C. 36.28 cm
D. 33.14 cm
2 of 4 Answered

Answers

Answer:

Well on my end i got 47.12, with pi included

Step-by-step explanation:

The surface area of the cylinder with the diameter 2cm and height 15cm  is [tex]100.48 \; cm^2[/tex]

Calculation to find Surface area of cylinder:

Given the diameter of the cylinder is 2cm and height  15cm

Formula :

The surface area of the cylinder =[tex]2\pi r^2+2\pi rh[/tex]

where 'r' is the radius and 'h' is the height of the cylinder

Diameter = 2cm

[tex]radius =\frac{diameter }{2} =\frac{2}{2} =1[/tex]

radius = 1cm and height is 15 cm

the value of pi is 3.14

Substiute all the values

[tex]SA = 2\pi r^2+2\pi rh\\SA=2(3.14)(1)^2+2(3.14)(1)(15)\\SA=6.28+94.2\\SA=100.48 cm^2[/tex]

The surface area of the cylinder with the diameter 2cm and height 15cm  is [tex]100.48 \; cm^2[/tex]

Learn more information about 'Surface area of cylinder' here

brainly.com/question/76387


Using the compound interest formula, the "n" is what value when compounded annually?

Answers

Answer:

n=1

Step-by-step explanation:

N is the number of times per year

Annually would be one time per year so n =1

Answer:

If interest is compounded yearly, then n = 1; if semi-annually, then n = 2; quarterly, then n = 4; monthly, then n = 12; weekly, then n = 52; daily, then n = 365; and so forth, regardless of the number of years involved. Also, "t" must be expressed in years, because interest rates are expressed that way.

Step-by-step explanation:

It's a snip-it from the web, but it worked for me.

Graph the equation.
y= 5(x + 1)^2– 3
HELP!!!

Answers

Step-by-step explanation:

the answer is in the attachment

The graph of the function y= 5(x + 1)²– 3 is attached accordingly. See the description of the graph below.

The graph of y= 5(x + 1)²– 3

The equation y = 5(x + 1)² - 3 represents a quadratic function.

The graph is a parabola with its vertex at (-1, -3). It opens upward since the coefficient of the squared term (x²) is positive.

The graph is vertically stretched by a factor of 5 compared to the standard quadratic function.

The x-coordinate of the vertex is -1, indicating a horizontal shift of 1 unit to the left from the standard quadratic.

Learn more about graphs at:

https://brainly.com/question/25799000

#SPJ2

A climber starts at an elevation of -200 meters and her change in elevation is 300 meters up. What is her final elevation?

Answers

Answer:

100

Step-by-step explanation:

because -100 0 then positive 100      

                     

John was adding Rational Numbers. He showed his work below. What was John's error?

Explain to John how to solve it correctly.

Adding Rational Numbers Error.

Answers

Answer:

-5 3/5

Step-by-step explanation:

John's error was in adding the whole number and fractional portions separately, the fractions must be converted to improper fractions with common denominators to be added or subtracted properly so

(-7 4/5) + (2 1/5), convert to improper fractions

-39/5 + 11/5, both fractions have common denominator so we can continue

-39 + 11 = -28, so -39/5 + 11/5 = -28/5, convert back to proper fractions

-28/5 = (-25/5) + (-3/5) = -5 3/5

The rectangular base of a 3-D printer East 4.5' by 3' in the Keogh's drawing the base of the printer is 3" by 2" of nicaea in larger drawing to 3 times its size would foot the scale of her events draw

Answers

Answer:

[tex]Scale = 1.5[/tex]

Step-by-step explanation:

Given

[tex]Printer = (4.5',3')[/tex]

[tex]Keogh = (3',2')[/tex]

Required

Determine the scale

This is calculated as:

[tex]Scale = \frac{Original}{Actual}[/tex]

[tex]Scale = \frac{(4.5,3)}{(3,2)}[/tex]

Factorize the numerator

[tex]Scale = \frac{1.5 * (3,2)}{(3,2)}[/tex]

Scale = \frac{1.5 * (3,2)}{(3,2)}[tex]Scale = 1.5 * \frac{(3,2)}{(3,2)}[/tex]

[tex]Scale = 1.5 * 1[/tex]

[tex]Scale = 1.5[/tex]

Which number is between 0.4 and 0.5?
A 0.04

0.44
0.05
0.50

Answers

.44 is the correct answer

5x+(6x divided by -9)

Who ever answer’s this i will mark brainliest

Answers

Answer:

(13/3)x

Step-by-step explanation:

6x/-9 is eqivalent to (2/-3)x. 5x is equivalent to (15/3)x. Combine the like terms and you get (13/3)x.

Given that €1 = 0.72

How much is €410 in £?

Answers

Answer:

295.20

Step-by-step explanation:

410*0.72

Answer:

295.2

Step-by-step explanation:

7)
2 1
Please help giving Brainly

Answers

Answer:

You should use MathPapa.

Step-by-step explanation:

Sonja uses 8 of the 12 eggs in her dozen eggs to make a breakfast casserole. Olga uses 5/6 of a dozen eggs to make scrambled eggs. Who uses make eggs? Explain your answe

Answers

Answer:

Olga will use 10 eggs, while Sonja will use 8, thus Olga will use more eggs.

Step-by-step explanation:

Given that Sonja uses 8 of the 12 eggs in her dozen eggs to make a breakfast casserole, while Olga uses 5/6 of a dozen eggs to make scrambled eggs, the following calculations must be performed to determine who uses more eggs:

Sonja = 8/12 = 0.666 x 12 = 8

Olga = 5/6 = 0.83333 x 12 = 10

Therefore, Olga will use 10 eggs, while Sonja will use 8, thus Olga will use more eggs.

A certain insect can beat its wings 180 times per

Answers

The equation would be

y= 180x

Instead I’d using the values 1,2,3,4,5,6 on dice, suppose a pair of dice have the following 1,2,2,3,3,4 on one die and 1,3,4,5,6.8 on the other.find the probability of rolling a sum of 12

Answers

Answer:1/24

Step-by-step explanation:

Since the first die has 4 distinct numbers, and second has 6 distinct numbers, so total number of combinations possible = 4 × 6 = 24

Now, the number of chances where we get the rolling sum as 12 is only one. (

Therefore, the probability of getting sum 12 is 1/24

Answer:

1/36

Step-by-step explanation:

For the acellus people

can u guys help i really need to be good at math because i dont want t go to a tewter tomorrow

Answers

Answer: Your answer is (C) 6/14

Step-by-step explanation: Have a brilliant day mate - Lily ^-^

Please help me......

Answers

Answer:

<BAC=1/2 <BOC=1/2 X=X/2(INSCRIBED ANGLE IS HALF OF CENTRAL ANGLE)

There are 204 basketball fans who plan to go to a game. How many buses will be needed, given that each bus can hold 42 fans?

Answers

Answer:

there will be 5 busses or 4.8 needed

What is the surface area?
8 ft
3 ft
1 ft
square feet

Answers

Answer: What is the surface area?
8 ft
3 ft
1 ft
square feet
To be honest I don’t really know what this shape is called but if it a rectangular prism then the surface area is going to be 70m^2

One year ago, Lindsey deposited $250 into a savings
account. Her balance
deposited $250 into
now $253, Two years ago, Jenn
savings account Her balance is
now $257.50. Which account has the greater simple
interest rate? Explain,

Answers

Answer:

Jenns account has the greater simple interest rate.

Step-by-step explanation:

The formula for simple interest is:

A = P * ( 1 + r * t )

Where A is the final amount after investment, P is the initial amount, r is the rate of interest and t is the time periods.

For Lindsey:

253 = 250 * ( 1 + r * t )

Solve for r

r = ( 253/250 ) - 1 = 0.012

Lindsey simple interest was 1.2% annually

For Jenn:

257.50 = 250 * ( 1 + r * 2 )

r = ( 257.50/250 ) - 1 )/2 = 0.015

 

Jenn simple interest was 1.5% annually  

Therefore Jenns account has the highest simple interest rate.

Answer:

Lindsay’s interest is $3 for one year. Using the formula for interest, I = prt, Lindsey’s money is earning at a rate of 1.2%. Jenn has earned $3.75 for one year. Her money is earning at a rate of 1.5%, which is a higher interest rate.

Step-by-step explanation:

Sample response :)

How do you solve for 5h+34=17

Answers

Answer:

h=10.2

Step-by-step explanation:

add 34 on both sides so you would have 5h =51 then you divide 51 by 5 so you are left with h = 10.2! have a great day!!

30% of the students are absent from math class. If there are normally 30 students, how many are missing?

Answers

9 students would be missing,
30 percent of 30 is 9, hope this helped :)

There are 38 students in Mr. Reynolds math class and 20 are boys.If a student is selected at random what is the probability that a girl is selected?Give the answer as a fraction in simplest form.

Answers

Answer:

9/19

Step-by-step explanation:

if 20 students are boys, then the remaining students are girls. 38-20 = 18

There are 18 girl students.

18/38 can be simplified to 9/19

Answer:

9/20

Step-by-step explanation:

Help it’s 50% of my grade

Answers

Answer:

(1/2)x+(1/4)=x

x=0.5

3x+3=2(x+7)

x=11

2(x-5)+7=x+8

x=11

0.8x+5=0.2(40-x)

x=3

5(x-1)-6x=-11x

x=0.5

6(x+2)-x=4(x+4)+7

x=11

(1/2)(x+8)+(3/2)x=10

x=3

Step-by-step explanation:

(1/2)x+(1/4)=x

x-0.5x=0.25

0.5x=0.25

x=0.5

3x+3=2(x+7)

3x+3=2x+14

3x-2x=14-3

x=11

2(x-5)+7=x+8

2x-10+7=x+8

2x-x=8+10-7

x=11

0.8x+5=0.2(40-x)

0.8x+5=8-0.2x

0.8x+0.2x=8-5

x=3

5(x-1)-6x=-11x

5x-5-6x=-11x

11x-x=5

10x=5

x=0.5

6(x+2)-x=4(x+4)+7

6x+12-x=4x+16+7

6x-4x-x=16+7-12

x=11

(1/2)(x+8)+(3/2)x=10

0.5x+4+1.5x=10

2x=6

x=3

How many digits are there in the​ Hindu-Arabic form of 44,350•1019​?

Answers

Answer:

25 digits

Step-by-step explanation:

add 5 digits in the 44,350 then add 20 digits from the 10^19 = 25 digits

Hindu-Arabic numerals are a decimal, or base-ten, place-value number system with the ten digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 as fundamental building blocks. Each digit in a number has a place value depending on its position.
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