Solve the Equation/Inequality (Alg: 11-17)
13.
18-4n=2n+10
n=4/3
8.
5(2a-3y)+y-4a
6a-14y
2.
(12-8)^2-12div4
13
22. Find the slope between (-3, 5) and (4, 8).
Recall the formula for the slope of a line:
m=(y_2-y_1)/(x_2-x_1)
m=3/7
5. Jen wants to tile the floor of her kitchen. The floor is rectangular and measures 12 feet by 8 feet. If it costs $2.50 per square foot for the materials, what is the total cost of the materials for tiling the kitchen floor?
$240
9. The measures of two angles of a triangle are 35 degrees and 45 degrees. What is the measure of the third angle of the triangle?
100 degrees.
14.
3n+8=5(n-5)+6
n=27/2 or n=13 1/2
9.
3n^2-4n+5-2(n^2+3n-1)
n^2-10n+7
3.
36+18div3-4^2
26
23. Find the slope for the equation 2x+3y=8.
Recall the slope-intercept formula for a line:
y=mx+b
m=-2/3
1. The perimeter of a square is 20 ft. If you increase the length of the square by 2 feet and decrease the width by 1 foot, what is the area, in square feet, of the new figure?
28 square feet
4. The surface area of a right rectangular prism can be found by finding the sum of the area of each of the faces of the prism. What is the surface area of a right rectangular prism with length 4 centimeters (cm), width 9 cm, and height 3 cm? (Are of a rectangle is equal to length times width.)
150 square centimeters
15.
(2n)/-5=4/6
n=-5/6
10.
3n(n^2+4n+1)+3n^2+5n-8
3n^3+15n^2+8n-8
4. Given a=-3, b=4, c=2.5, evaluate...
2a+3b
6
24. 35% of what number is 42?
120
14. If the formula for area is
A=lxxw
what is the area of the shaded region of the figure?
40 ft
3. The yard behind Cindy's house if rectangular in shape and has a perimeter of 72 feet. If the length, l, of the yard is 18 feet longer than the width, w, of the yard, what is the area of the yard, in square feet?
243 square feet
16.
3(2n-6)+10>=5n-8
n>=0
18.
(5a^2)*(-3a^3)*a
-15a^6
5. Given a=-3, b=4, c=2.5, evaluate...
3c^2-4a+b
34.75
25. Simplify
(1.6*10^5)*(4.8*10^-3)
7.68*10^2
7. A rectangular yard has an area of 96 square feet. If the width of the yard is 4 feet less than the length, what is the perimeter, in feet, of the yard?
40
12. Using the Pythagorean Theorem formula
a^2+b^2=c^2
what is the measure of the missing side measure?
sqrt20
17.
-6<2n+4<18
-5<n<7
20.
((-18a^2)*(-4a^3)^2)/(2*(9a^4))
-16a^4
6. Given a=-3, b=4, c=2.5, evaluate...
2(a-b)^2+c
100.5
26. If 3 U.S. dollars = 27 Mexican pesos, then 3500 peses = $___________.
$388.89
6. In the figure not below, both circles have the same center, and the radius of the larger circle is R. If the radius of the smaller circle is 3 units less than R, which of the following represents the area of the shaded region?
piR^2-pi(R-3)^2
13. Using the Pythagorean Theorem formula
a^2+b^2=c^2
what is the measure of the missing side measure?
sqrt125