Solve: 3x+5 =20
Answer: x=5
In SOHCAHTOA, what ratio is opposite/hypotenuse?
Sine
Convert 4.5m to cm
450cm
Find the mean of 5,8,10,12
8.75
What is a budget?
A budget tracks income and expenses to help manage money. So, It is a plan for managing income and expenses.
Simplify: 4(2x-3) +5
Answer: 8x-7
Find the hypotenuse if the legs are 6 cm and 8 cm
10 cm
Find the area of a rectangle measuring 12cm by 7cm
84cm2
Find the median of 2,5,7,10,12
7
Find the simple interest on $1000 at 5% for 3 years
$150
Evaluate: (18/3)(2+1)
Answer: 18
Find sin(30*)
0.5
Find the circumference of a circle with radius 5cm
31.4cm
What graph is the best for showing changes over time?
Line graph
What is a mortgage?
A loan used to purchase a home
A student purchases 3 notebooks and 2 pens for $17. A notebook costs $4. How much costs for the each one?
3(4) + 2p= 17
12+2p= 17
2p=5
p=2.50
A ladder 12m long leans against a wall. The bottom is 5m from the wall. How high up the wall does it reach?
10.91m
Find the volume of a cylinder with radius 4cm and height 10cm
502.65cm3
The test score are:
70,75,80,85,90
Find the mean
80
Calculate the future value of $2000 invested for 3 years at 4% compounded annually.
A= 2000(1.04)3
A= 2000(1.124864)
A= 2249.73
Answer: $2249.73
Solve: 5(2x-1)-3(x+4)=21
10x-5-3x-12=21
7x-17=21
7x=38
x=5.43
2 sides of a triangle are 10cm and 15cm with an included angle of 60*. Find the 3rd side using the Cosine law
Using Cosine Law: c2 = a2+b2 - 2ab cos(C)
c2 = 102 + 152 - 2(10)(15)cos(60*)
c2 = 100+225 - 300(0.5)
c2 = 325-150 c2 = 175
c = root of 175
c = 13.23 cm
A composite figure consists of a rectangle 12m x 8m and a semicircle with diameter 8m attached to one side. Find the total area.
Rectangle=96
Semicircle=25.13
Total= 121.13m2
A scatterplot shows that as study time increases, test score increases, what type of correlation exists?
Positive correlation
Strong positive relationship between variable
A house costs $500,000. The buyer makes a 20% down payment. What is the mortgage amount?
0.20 x 500,000 = $100,000
Mortgage= 500,000 - 100,000 = $400,000
The mortgage is $400,000