Mathematicsacademic

Class 10R sat a test. The mean mark for the class was 70%. There are 30 students in the class, 20 of whom are boys. The mean mark for the boys in the test was 62%. Work out the mean mark for the girls.

"Write 314,207 in expanded form. 300,000+10,000+4,000+200+7"

"How many sides does a regular nonagon have? A. 6 B. 7 C. 9"

Calculate the percent relative average deviation of the following set of numbers: 10.01, 10.03, 9.96, 9.99

Use mental math to solve 18×5. Find as many strategies as you can to solve. Record and describe each strategy.

"Select the action you would use to solve 4x=16. Then select the property that justifies that action. A. Action: Divide both sides by 4. B. Property: Multiplication property of equality. C. Action: Multiply both sides by 4. D. Property: Division property of equality. E. Property: Addition property of equality. F. Action: Add 4 to both sides."

"Compute, in both feet and inches, the height of a woman who is 167 cm tall. Height in feet: _____ Height in inches: _____"

"How many inches is a length measuring 6 feet 10 inches? There are 12 inches in a foot. A. 62 inches B. 72 inches C. 13 inches D. 82 inches"

The Empire State Building in New York City is 443.2 meters tall. This is 119.2 meters taller than the Eiffel Tower in Paris. Write an equation that can be used to find the height h in meters of the Eiffel Tower.

Express 4 1/8​ in decimal form. A) 4.125 B) 4.15 C) 0.415 D) 4.08

What is the decimal representation of −7 3/8 ?

Use the grouping method to factor x3 +x2 +3x+3.

"Write as a single fraction in its simplest form: a/b​ + c/d​ + e/f​"

"A recipe written in metric units calls for 250 mL of milk. Which of the following best approximates this amount? A. 1 qt B. 1 gal C. 1 cup D. 1 pt"

"If a person can select 3 presents from 10 presents under the tree, how many different combinations are there? A. 120 B. 30 C. 720 D. 10"

If 3x−4=8, what is the value of x?

If 3x−4=8, what is the value of x?

"What is the slope of the line that passes through the points (0,−8) and (0,−10)? Write your answer in simplest form."

"A cup of water holds about 8 ounces. If a recipe calls for 1/3cup of water, which is the best estimate of the number of ounces that are needed? A. 2 ounces B. 3 ounces C. 4 ounces D. 5 ounces"

What does the upside-down triangle symbol mean in mathematical notation?

"If interest is compounded quarterly, how many times a year is it compounded? A. Four B. One C. Twelve D. Two"

"Which is a correct verbal expression for 8n? A. Eight divided by n. B. Eight times n. C. Eight plus n. D. Eight minus n."

"Which is a correct verbal expression for 8n? A. Eight divided by n. B. Eight times n. C. Eight plus n. D. Eight minus n."

"Which is a correct verbal expression for 8n? A. Eight divided by n. B. Eight times n. C. Eight plus n. D. Eight minus n."

"Convert the fraction 34/50​ to a percentage. A. 0.068% B. 6.8% C. 68% D. 0.68%"

What is 4x/x?

What is 100,000 times 100,000 using the standard method of multiplication? Write the answer as 10 to a power.

"GENERIC is most similar in meaning to: A. Common B. Unique C. Specific D. Requested"

"Convert 14 degrees Fahrenheit to degrees Celsius. Use F=(9/5)C+32 for the conversion between degrees Fahrenheit and degrees Celsius. 14 degrees Fahrenheit = □ °C (If necessary, round to two decimal places.)"

"How many feet are in 300 inches? 18 feet 20 feet 25 feet 30 feet"

"If a restaurant bill totals $85, what amount should be left as a 15% tip? A. $97.75 B. $11.90 C. $12.25 D. $12.75"

"A newborn elephant weighs 225 lb. How many kilograms does the elephant weigh? (1 kg = 2.2 lb) A. 100 kg B. 50 kg C. 75 kg D. 110 kg"

"Simplify the following expression: 3/2 × 8/3 Express your answer in its simplest form."

How do you identify the parent function given an equation?

How would you solve for x in this equation: 0.85x=200

What are the three ways we can write ratios?

Calculate 30 percent of 950 using a percent ruler.

Rewrite the following equation to solve for x: y=mx+b

Write seven cubed in all three forms: exponential, expanded, and standard form. Exponential form: 7^3 Expanded form: 7×7×7 Standard form: 343

What is the value of f(x)=8x when x=5?