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Algebra test 8b
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1. What is the prime factorization of 50?
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2 x 2 x 5 x 5
2 x 5 x 5
2 x 2 x 5
2 x 3 x 5 x 7
2. What is the product of the above question
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6.48 x 10^7
3.52 x 10^6
6.48 x 10^6
4.28 x 10^7
3. Use the formula : F = 9/5 C + 32 to find the Celsius temperature when the Fahrenheit temperature is 185.
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95 degrees Celsius
152 degrees Celsius
85 degrees Celsius
52 degrees Celsius
4. Simplify the above:
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3a^6b^5
27a^6b^5
27a^9b^2
27a^9b^6
5. A traffic light casts a shadow 23.4 feet long. A girl who is 4 feet tall casts a shadow 5.2 feet long. How tall is the traffic light?
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18 feet
30.42 feet
20 feet
20.8 feet
6. Is the following an arithmetic sequence? 1, 12, 23, 34, ...
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yes
no
7. What is the slope of a horizontal line?
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undefined
zero
100
3.14
8.A bag contains 3 green marbles and 7 yellow marbles. Find the probability of drawing a green marble, keeping it, and drawing another green marble. Write the probability as a fraction in simplest form.
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1/7
1/10
3/7
1/15
9. A traveler from Europe wants to convert the distance 700 miles to kilometers. If 1 mile equals 1.61 kilometers, what is the distance between the two cities in kilometers?
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434.78 km
1127 km
1007 km
31 km
10. Find the difference (- 1.8) - (- 5.4)
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- 7.2
7.2
3.6
-3.6
11. Solve for y: -3(3y - 7) = 21 - 9y
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y = 7
undefined (no solution)
identity
y = -31
all of the above
12. solve for b: 5b - 6 - 7b + 2 = 2
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b = -3
b = 3
b = 2
b = -2
b = 10,031
all of the above
13. -0.4x + 0.7 = 4.3
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x = 12.5
x = -12.5
x = -9
x = -2
14. Order these numbers from least to greatest: -1/2, -2, -0.2, 0.2
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-2, -1/2, -0.2, 0.2
-2, 0.2, -1/2, -0.2
0.2, -0.2, -1/2, -2
-2, -0.2, -1/2, 0.2
15. Evaluate 7x + 3y - xy when x = 6 and y = 2
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6
36
18
25
16. One pretzel has 20 calories. Write an algebraic expression for the total number of calories in x pretzels
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x/20
20/x
20 + x
x - 20
20x
20 x r + 30x - 75 -100
17. The above is equal to...
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8
-8
16
-16
elephant
18. Combine like terms above:
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c^2 + 5cd^2
6c^2d^2
5c^2 + 2c
6cd^2 + c^2
19. The largest whole number that is a factor of two or more indicated numbers is the _____________.
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Least Common Multiple
Common Denominator
Greatest Common Factor
Square Root
Best Friend
20. A team's ratio of wins to losses in football games is 5 to 4. If the team wins 25 games, how many games did the team lose?
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5 games
20 games
4 games
16 games
21 games
all of the games
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