MATHEMATICS HIGH SCHOOL

Solve the following system using the substitution method.9x + 8y = 15
-5x + 12y = -107

(x, y) = ( , )

Answers

Answer 1
Answer: x = (15 - 8y)/9

-5[(15 - 8y)/9] + 12y = -107

(-75/9) + (40/9) + 12y = -107

y = -8.59

x = [15 - 8(-8.59)]/9

x = 9.3
(x,y) = (9.3, -8.59)

Related Questions

Part A: Explain why the x-coordinates of the points where the graphs of the equations y = 2−x and y = 4x + 3 intersect are the solutions of the equation 2−x = 4x + 3. (4 points) Part B: Make tables to find the solution to 2−x = 4x + 3. Take the integer values of x only between −3 and 3. (4 points) Part C: How can you solve the equation 2−x = 4x + 3 graphically? (2 points) PLez Answer 50 points
Practice simplifying rational expressions with negative exponents.
HELP! 10 POINTS!! :((
What is the product of 2x + y and 5x – y + 3?
A large candy bar was 120 calories. Thesmaller candy bar has 16 percent lesscalories. How many calories does thesmaller candy bar have?

What's the area of a rectangle measuring 13 in. × 12 in

Answers

it is 156 in. 
hope it helped you :) 

Name four angles whose tangent equals 0. a. 45°, 135°, 405°, 495° c. 0°, 180°, 360°, 540° b. 90°, 270°, 450°, 630° d. 90°, 450°, 810°, 1170°

Answers

Answer:

C.)  0°, 180°, 360°, 540°

is correct !

Answer:

C. SEE ATTACHED PICTURE

Step-by-step explanation:

Tangent = 0 at 0° and 180°

0° = 360° and. 180° = 540°

Help me solve this question?tan(theta) = -3.4141

Find theta to the nearest degree in the interval 0° less than or equal to theta less than or equal to 360°

Answers

For this you're going to want to whip out your calculator.
make sure it is in degrees instead of radians
plug in tan^-1(-3.4141) 
it should equal about -73.674
to change that to be between 0 and 360
360 - 73.674 ≈ 286.325

The set of integers is closed under subtraction.
True
False

Answers

The answer of the  integers is closed  under subtraction is  False

Answer:

false

Step-by-step explanation:

Sarah Meeham blends coffee for​ Tasti-Delight. She needs to prepare 100 pounds of blended coffee beans selling at $4.58 per pound. She plans to do this by blending together a high quality bean costing $5.25 per pound and a cheaper coffee bean at $3.00 per pound. To the nearest pound find how much high quality coffee bean and cheaper coffee bean she should blend.

Answers

the high quality coffee bean and cheaper coffee bean should blend at 14.3lbs

What is 10^0 + 10^1 + 10^2 equal to? A. 10,201 B. 120 C. 111 D. 110 E. 100

Answers

Answer:

111

Step-by-step explanation:

10^0 + 10^1 + 10^2

1 + 10 + 100

111

Answer:

111

Step-by-step explanation:

1+10+100=111
Other Questions
Toilet rolls come in packs of 4 and 9The 4 pack is priced at £2.04 The 9 pack is priced at £4.68 By calculating the price per toilet roll, determine which pack is better value . Show your working
8 + 2r = −10 what is r?
NEED HELP FAST WILL GIVE BRANLIEST TO FIRST COMPLETE ANSWER Part 2: Create a scenario for a geometric sequence. For example, Anthony goes to the gym for ______ minutes on Monday. Every day he _________his gym time by ____________. If he continues this pattern, how many minutes will he spend at the gym on the 5th day? Be sure to fill in the blanks with the words that will create a geometric sequence. Use your scenario to write the formula for the 5th term in your sequence using sequence notation.Part 3: Use your scenario from part 2 to write a question that will lead to using the geometric series formula. Use the formula to solve for Sn in your scenario.
three bags of potatoes and four cases of corn cost $40. Five bags of potatoes and two cases of corn cost $34. Find the cost of one bag of potatoes and the cost of one case of corn.