12. How many real-number solutions does the equation have?
(Image: 0 equals 3 x squared minus 5x minus 5) (1 point)
one solution
two solutions
no solutions
infinitely many solutions
1 year ago
1 year ago
one more question
1 year ago
Sure, go ahead with your question.
1 year ago
14. What are the solutions to the system?
y = x2 + 3x โ 4
y = 2x + 2 (1 point)
(โ3, 6) and (2, โ4)
(โ3, โ4) and (2, 6)
(โ3, โ4) and (โ2, โ2)
no solution
1 year ago
(-3, 6) and (2, -4)
1 year ago
15. Simplify the radical expression.
(Image) (1 point)
(Image: 2 Start Root 6 End Root)
(Image)
โ(Image)
12
1 year ago
2โ6
1 year ago
16. Simplify the expression.
(Image: start root 5 end root plus 7 start root 5 end root) (1 point)
(Image: 7 Start Root 10 End Root)
(Image: 8 Start Root 5 End Root)
(Image: The term states 6 times the square root of 5.)
(Image: 8 Start Root 10 End Root)
1 year ago
8โ5
1 year ago
17. What is a simpler form of the following expression?
(โ10x3 + 30x โ 20) รท (โ5x + 5) (1 point)
2x2 โ 2x + 4
โ2x2 โ 2x โ 4
โ2x2 + 2x + 4
2x2 + 2x โ 4
1 year ago
2xยฒ - 2x + 4
1 year ago
18. Solve the equation.
(Image) (1 point)
x = 1
x = โ(Image: start fraction 23 over 6 end fraction)
x = โ(Image: start fraction 5 over 2 end fraction)
x = โ5
1 year ago
x = โ(5/2)
1 year ago
19. The time t required to drive a certain distance varies inversely with the speed, r. If it takes 2 hours to drive the distance at 67 miles per hour, how long will it take to drive the same distance at 55 miles per hour? (1 point)
about 1.64 hours
about 134.00 hours
about 2.45 hours
about 61.00 hours
1 year ago
About 2.45 hours.
1 year ago
24. What is the simplified form of the expression?
4d-3 โข d18 (1 point)
5dโ54
5d15
4d15
4dโ54
1 year ago
4dยนโต
1 year ago
25. What is the degree of the monomial?
7x8 (1 point)
7
8
15
56
1 year ago
8
1 year ago
26. What is the factored form of the expression?
t2 โ 25 (1 point)
(t + 5)(t + 5)
(t โ 5)(t + 5)
(t โ 5)(t โ 5)
(t โ 20)(t โ 5)
1 year ago
(t - 5)(t + 5)
1 year ago
28. Simplify the radical expression by rationalizing the denominator.
(Image: 2 over square root 42) (1 point)
(Image: square root 84 over 42)
(Image: square root 42 over 21)
(Image: 21 square root 42)
(Image: square root 2)
1 year ago
โ42/21
1 year ago
31. Suppose that y varies inversely with x, and y = 2 when x = 6. What is an equation for the inverse variation? (1 point)
x = (Image: y over four)
y = (Image: 12 over x)
y = 4x
y = (Image: x over 12)
1 year ago