Evaluate each expression if r = 5, s = 2, t = 7, and u = 1. 1. s + 7 2. 9 – u 3. 3t + 1

4. 5r - 4 5. t – s 6. u + r

7. 11t – 7 8. 6 + 3u 9. 4r – 10s

10. 32 11. 22 – 18 12. 2 + 8

13. 2 14. 30 15. (3+)28

Evaluate each expression if a = 4.1, b = 5.7, and c = 0.3.

16. a + b – c 17. 10 – (a + b) 18. b – c + 2

19. MOON The expression 6 gives the weight of an object on the Moon in pounds with a weight of w pounds on Earth. What is the weight of a space suit on the Moon if the space suit weighs 178.2 pounds on Earth?

the answer is b.)

< 1=< 2

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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answers

rauschg

rauschg · hand

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step-by-step explanation:

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.