17 + 15 / 3 - 2⁴ and 12⁰ + 3 x 4 - 5¹, №17886475, 22.05.2022 23:34

Mathematics

Step-by-step answer

P Answered by PhD

17+15=32/ 3-2⁴= -5 and 12⁰+3*4-5¹=28

Step-by-step explanation:

Mathematics

Please help me fix these My teachers response: 4. You had it in your 3rd step. I m not sure why you included the last step. What would each of those x s from your 3rd step be worth if you solved for each of them. 15. 8 is one of them, what is the second number? 18. Not quite. Please explain what each number represents and how you will know if it is + or -. 19, 20. Recalculate Solve the quadratic equations in questions 1 – 5 by factoring. 4. –x^3 + 22x^2 – 121x = 0 -x (x^2 - 22x + 121) = 0 -x (x - 11^2) = 0 -x (x - 11)* ( x + 11) =0 Solutions: x=

Step-by-step answer

P Answered by PhD

5

See below

Step-by-step explanation:

4) You made an error in step 3

Step 1: -x³ + 22x² - 121x = 0

Step 2: -x(x² - 22x + 121) = 0

Step 3: -x(x - 11²) = 0 Error!

-x(x - 11)² = 0 Correction

Step 4: -x = 0 (x - 11)² = 0

Step 5: x = 0 x = 11

15) Your work is correct

n = 8, n = -9 BOTH answers are correct

n = 8 Error!

n = 8, n = -9 Correction

18) The formula is: h(t) =at² + vt + h(0)

a = -4.9 acceleration is negative because gravity pushes downv = 24.5 velocity is positive because it states it is "upward"h(0) = 117.6 h(0) is initial height

h(t) = -4.9t² + 24.5t + 117.6 option 3

19) Now that you have the correct equation, you can use the quadratic formula to solve for t

t = -3, t = 8

Since time cannot be negative, t = -3 is not valid

t = 8 option 1

20) It is given that h(t) = 49

Equation: 49 = -4.9t² + 24.5t + 117.6

0 = -4.9t² + 24.5t + 68.6

Use the quadratic equation to solve: t = -2, t = 7

Since time cannot be negative, t = -2 is not valid

t =7

Mathematics

7th grade need its a assignment: inequality word problems quiz 1. -3x 27. solve for x. a. x 9 b. x 9 c. x -9 d. x -9 2. x/5 25. solve for x. a.x 20 b.x 5 c.x 100 d.x 125 3. x - 4 17. solve for x. a.x 21 b.x 13 c.x 21 d.x 13 4. what is a possible value of x if -5 x 0? a.-6 b.3 c.-3 d.6 5. which inequality would you use? no more than 220 people are in the theater. a. p 220 b. p 220 the arrow is underlined c. p 220 d.p 220the arrow is underlined 6. which inequality would you use? there are at least a dozen eggs left. a. e 12 b. e 12 c. e 12 d. e

Step-by-step answer

P Answered by Specialist

9

For number 1, you divide both sides by -3 and because it is a negative number, you need to flip the sign so the answer is d.
For number 2, because you need to make the x by itself, you multiply both sides by 5 which gives you c.
For number 3, you add both sides by 4 so you get a.
For number 4, you find the number between -5 and 0 so the answer is c.
For number 5, the answer is b. nothing much to explain.
For number 6, its the greater than with the line underneath
For number 7, the answer is d.
For number 8, b
For number 9, c
For number 10, A

Mathematics

7th grade need its a assignment: inequality word problems quiz 1. -3x 27. solve for x. a. x 9 b. x 9 c. x -9 d. x -9 2. x/5 25. solve for x. a.x 20 b.x 5 c.x 100 d.x 125 3. x - 4 17. solve for x. a.x 21 b.x 13 c.x 21 d.x 13 4. what is a possible value of x if -5 x 0? a.-6 b.3 c.-3 d.6 5. which inequality would you use? no more than 220 people are in the theater. a. p 220 b. p 220 the arrow is underlined c. p 220 d.p 220the arrow is underlined 6. which inequality would you use? there are at least a dozen eggs left. a. e 12 b. e 12 c. e 12 d. e

Step-by-step answer

P Answered by Specialist

9

For number 1, you divide both sides by -3 and because it is a negative number, you need to flip the sign so the answer is d.
For number 2, because you need to make the x by itself, you multiply both sides by 5 which gives you c.
For number 3, you add both sides by 4 so you get a.
For number 4, you find the number between -5 and 0 so the answer is c.
For number 5, the answer is b. nothing much to explain.
For number 6, its the greater than with the line underneath
For number 7, the answer is d.
For number 8, b
For number 9, c
For number 10, A

Mathematics

Find the solution of each equation if the replacement sets are a = {0,3,5,8,10} 1 . b - 12 = 9 2. 15/a = 3 3. 31 = 3a + 7 find the solution of each equation using the given replacement set. 4. t - 13 = 7 {10, 13, 17, 20} 5. 22 = n/3 {62,64, 66, 68, 70} solve each equation 6. a = 32 - 9(2) 7. 12 x 5/ 15 - 3 = y 8. 27 + 5/ 16 = g 9. r = 9(6)/ ( 8 + 1 ) 3 10. during a lifetime, the average american drinks 15,579 glasses of milk, 6220 glasses of juice, and 18,995 glasses of soda. write and solve an equation to find (g), the total number of glasses

Step-by-step answer

P Answered by PhD

4

1) There are no solutions for this equation in the solution set.

2) The solution set is {5} because 15/5 = 3

3) The solution set is {8} because
$31 = 3 (8) + 7 \\ 31 = 24 + 7 \\ 31 = 31$

4) The solution set is {20} because 20 - 13 = 7

5) The solution set is {66} because 22 x 3 = 66

6)
$A = 32 - 9(2) \\ A = 32 - 18\\ A = 14$

7)
$12 \times \frac{5}{15} - 3 = Y \\\\ 12 \times \frac{1}{3} -3 = Y \\\\ 4 -3 = Y \\ Y =1$

8)
$27 + \frac{5}{16} = G\\\\G = \frac{432 + 5}{16}\\\\G = \frac{437}{16}\\\\G = 27 \frac{5}{16}$

9)
$R = \frac{9(6)}{ ( 8 + 1 ) 3}\\\\R = \frac{54}{9(3)} \\\\R = \frac{54}{27}\\\\ R = 2$

10)
$15,579 + 6,220 + 18,995 = G\\\\ G = 40,794$

11) The solution set is {6, 7} because:
6 -2 < 6, which is 4 < 6
AND
7 - 2 < 6, which is 5 < 6

12) The solution set is {9, 11} because:
3 ≥ 25/9, which is 3 ≥ 2.77777777778
AND
3 ≥ 25/11, which is 3 ≥ 2.2727272727

Hope this helps :D

Mathematics

Find the solution of each equation if the replacement sets are a = {0,3,5,8,10} 1 . b - 12 = 9 2. 15/a = 3 3. 31 = 3a + 7 find the solution of each equation using the given replacement set. 4. t - 13 = 7 {10, 13, 17, 20} 5. 22 = n/3 {62,64, 66, 68, 70} solve each equation 6. a = 32 - 9(2) 7. 12 x 5/ 15 - 3 = y 8. 27 + 5/ 16 = g 9. r = 9(6)/ ( 8 + 1 ) 3 10. during a lifetime, the average american drinks 15,579 glasses of milk, 6220 glasses of juice, and 18,995 glasses of soda. write and solve an equation to find (g), the total number of glasses

Step-by-step answer

P Answered by PhD

4

1) There are no solutions for this equation in the solution set.

2) The solution set is {5} because 15/5 = 3

3) The solution set is {8} because
$31 = 3 (8) + 7 \\ 31 = 24 + 7 \\ 31 = 31$

4) The solution set is {20} because 20 - 13 = 7

5) The solution set is {66} because 22 x 3 = 66

6)
$A = 32 - 9(2) \\ A = 32 - 18\\ A = 14$

7)
$12 \times \frac{5}{15} - 3 = Y \\\\ 12 \times \frac{1}{3} -3 = Y \\\\ 4 -3 = Y \\ Y =1$

8)
$27 + \frac{5}{16} = G\\\\G = \frac{432 + 5}{16}\\\\G = \frac{437}{16}\\\\G = 27 \frac{5}{16}$

9)
$R = \frac{9(6)}{ ( 8 + 1 ) 3}\\\\R = \frac{54}{9(3)} \\\\R = \frac{54}{27}\\\\ R = 2$

10)
$15,579 + 6,220 + 18,995 = G\\\\ G = 40,794$

11) The solution set is {6, 7} because:
6 -2 < 6, which is 4 < 6
AND
7 - 2 < 6, which is 5 < 6

12) The solution set is {9, 11} because:
3 ≥ 25/9, which is 3 ≥ 2.77777777778
AND
3 ≥ 25/11, which is 3 ≥ 2.2727272727

Hope this helps :D

Mathematics

Find the solution of each equation if the replacement sets are a = {0,3,5,8,10} 1 . b - 12 = 9 2. 15/a = 3 3. 31 = 3a + 7 find the solution of each equation using the given replacement set. 4. t - 13 = 7 {10, 13, 17, 20} 5. 22 = n/3 {62,64, 66, 68, 70} solve each equation 6. a = 32 - 9(2) 7. 12 x 5/ 15 - 3 = y 8. 27 + 5/ 16 = g 9. r = 9(6)/ ( 8 + 1 ) 3 10. during a lifetime, the average american drinks 15,579 glasses of milk, 6220 glasses of juice, and 18,995 glasses of soda. write and solve an equation to find (g), the total number of glasses

Step-by-step answer

P Answered by PhD

3

1) There are no solutions for this equation in the solution set.

2) The solution set is {5} because 15/5 = 3

3) The solution set is {8} because $31 = 3 (8) + 7 \\ 31 = 24 + 7 \\ 31 = 31$

4) The solution set is {20} because 20 - 13 = 7

5) The solution set is {66} because 22 x 3 = 66

6) $A = 32 - 9(2) \\ A = 32 - 18\\ A = 14$

7) $12 \times \frac{5}{15} - 3 = Y \\\\ 12 \times \frac{1}{3} -3 = Y \\\\ 4 -3 = Y \\ Y =1$

8) $27 + \frac{5}{16} = G\\\\G = \frac{432 + 5}{16}\\\\G = \frac{437}{16}\\\\G = 27 \frac{5}{16}$

9) $R = \frac{9(6)}{ ( 8 + 1 ) 3}\\\\R = \frac{54}{9(3)} \\\\R = \frac{54}{27}\\\\ R = 2$

10) $15,579 + 6,220 + 18,995 = G\\\\ G = 40,794$

11) The solution set is {6, 7} because:
6 -2 < 6, which is 4 < 6
AND
7 - 2 < 6, which is 5 < 6

12) The solution set is {9, 11} because:
3 ≥ 25/9, which is 3 ≥ 2.77777777778
AND
3 ≥ 25/11, which is 3 ≥ 2.2727272727

Hope this helps :D

Mathematics

Since 1990, the number of new books published each year has been growing at a rate that can be approximated by a quadratic function. The table shows the number of books published in the United States for selected years. Use the regression feature on your calculator to determine the quadratic which best fits the data. Then, estimate the number of books in 2017. (Hint: 2017 represents when x = 27) Years (1990=0) Books Published (1000 s) 46.7 49.2 3 49.8 4 51.7 5 62.0 6 68.2 7 65.8 9 102.0 10 122.1 0 2 Oy=1.0622 - 3.57x + 49.8726150 o y = 1.0522 -

Step-by-step answer

P Answered by PhD

Option (3)

Step-by-step explanation:

By using quadratic regression calculator,

Regression equation for the given data will be,

y = -1.04x²- 3.51x + 49.41

For x = 27 years (In year 2017),

y = 1.04(27)² - 3.51(27) + 49.41

= 758.16 - 94.77 + 49.41

= 712.8

Since y-values are in thousand (000's)

Therefore, number of books published in 2017 will be 712800.

Option (3) will be the correct option.

Mathematics

Since 1990, the number of new books published each year has been growing at a rate that can be approximated by a quadratic function. The table shows the number of books published in the United States for selected years. Use the regression feature on your calculator to determine the quadratic which best fits the data. Then, estimate the number of books in 2017. (Hint: 2017 represents when x = 27) Years (1990=0) Books Published (1000 s) 46.7 49.2 3 49.8 4 51.7 5 62.0 6 68.2 7 65.8 9 102.0 10 122.1 0 2 Oy=1.0622 - 3.57x + 49.8726150 o y = 1.0522 -

Step-by-step answer

P Answered by PhD

Option (3)

Step-by-step explanation:

By using quadratic regression calculator,

Regression equation for the given data will be,

y = -1.04x²- 3.51x + 49.41

For x = 27 years (In year 2017),

y = 1.04(27)² - 3.51(27) + 49.41

= 758.16 - 94.77 + 49.41

= 712.8

Since y-values are in thousand (000's)

Therefore, number of books published in 2017 will be 712800.

Option (3) will be the correct option.

Mathematics

Need answers as soon as possible, will give brainiest and rate 5/5. 1: solve x/-3 = -15. 45 -45 5 -5 2: find the value of -7 + 3(-12) ÷ (-3). -16 -19 -40 5 3: if f(n) = n^2 - n, then f(-4) is -20 20 12 -12 4: which equation does not have the same solution as the others? x/4 = 2 x - 9 = 17 x + 12 = 20 2x = 16 5: the solution to 2x - 5 = 27 is also a solution of which of the following equations? 3 + 5x = 58 3x - 2 = 31 2x + 3 = 35 27 - 2x = 5 6: find the value of -8 - 12 - (-20). 24 -40 16 0 7: evaluate -2x ^2y, if x = -3 and y = -1. -12 -18 18 12

Step-by-step answer

P Answered by Master

54

1. x/-3=-15
x=45

2. -7+3(-12)÷-3
-7+12
5

3. f(-4)=(-4)²-(-4)
f(-4)=16-(-4)
f(-4)=20

4. x-9=17

5. 2x+3=35

6. -8-12-(-20)
-20-(-20)
0

7. -2(-3)²(-1)
-2(9)(-1)
-18(-1)
18

8. x-(-2)

9. subtract 7 then divide by -2

10. 6+(-18)+(-13)+9
-12-4
-16

11. 5x=11

12. division property

13. -3³ = -27

14. x/2-3=7
x/2=10
x=20

15. 2x-5=15

16. x/-4-(-8)=12
x/-4=4
x=-16

17. 168

18. 16-20-(-8)-9
-4-(-8)-9
4-9
-5

17 + 15 / 3 - 2⁴ and 12⁰ + 3 x 4 - 5¹

Step-by-step answer

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