MATHEMATICS HIGH SCHOOL

A store sells small notebooks for $7 and large notebooks for $10 if a student buys 6 notebooks and spends $51 how many of each size did he buy

Answers

Answer 1
Answer: He bought 3 small notebooks (3*7=21) and 3 large notebooks (3*10=30)
21+30=51
Answer 2
Answer: 7+7+7=21
10+10+10=30 
30+21=51

Related Questions

Find the greatest number you can add to 4315 without having to regroup
A man is five times as old as his son. Four years ago, he was nine times as old. Find their present ages.
10 pts help me out!Its kinda simple
What is the difference between comparing two things and contrasting two things?
How many times larger is the radius of a mercury atom, 1.50 x 10-10, than the radius of a hydrogen atom, 2.5 x 10-11?

The area of a sector of a circle with a radius of 4 centimeters is 2.512 square centimeters. The estimated value of π is 3.14. The measure of the angle defining the sector is °.'

Answers

Area = (theta/360)* pi * r^2 
where theta is the angle of  the sector 
subs by your givens in the above equation 
2.512 = (theta/360) * pi * (4)^2 
theta = (2.512 * 360) /(pi*(4)^2)
theta = 18 degree 

Samuel earns $50.75 each week by working at a part-time job. He works the same amount of time each day for 5 weeks. What is the total amount of money Samuel earns during the 5-week period?

Answers

Answer:

$253.75

Step-by-step explanation:

He earns $50.75/week. Do 50.75 x 5 = $253.75

The Y is the diameter

Find Y

Area of the circle ​

Answers

Answer:

Y = 22.56 cm

Step-by-step explanation:

To find the diameter Y of the circle we must first find the radius of the circle

Area of a circle = πr²

where

r is the radius

From the question

Area = 400cm²

Substitute the value into the above formula and solve for the radius

That's

400 = πr²

Divide both sides by π

We have

{r}^(2) = (400)/(\pi)

Find the square root of both sides

r = \sqrt{ (400)/(\pi) }

radius = 11.28 cm

Since we have the radius we can use it to find the diameter Y using the formula

diameter = radius × 2

radius = 11.28

Y = 11. 28 × 2

We have the final answer as

Y = 22.56 cm

Hope this helps you

Match each expression with its simplified form.1. a/(a^2-4)+2/(3a+6)
2.5/a+7
3.a/ab-3/b
4.6/ab+8/a
5.3a/4b^2-b/6a

Answers

(a)/(a^2-4)+(2)/(3a+6) = (a)/((a-2)(a+2)) + (2)/(3(a+2)) = \n\n(3a)/(3(a-2)(a+2))+(2(a-2))/(3(a+2)(a-2)) = \n\n(3a+2a-4)/(3(a^2-4)) = (5a-4)/(3a^2-12)

(5)/(a)+7 = (5)/(a)+(7a)/(a) = (7a+5)/(a)\n\n\n(a)/(ab)-(3)/(b) = (1)/(b) -(3)/(b) = (1-3)/(b) = -(2)/(b)\n\n(6)/(ab)+(8)/(a) = (6)/(ab)+(8b)/(ab) = (6+8b)/(ab)\n\n(3a)/(4b^2) - (b)/(6a) = (9a^2)/(12ab^2) - (2b^3)/(12ab^2) = (9a^2-2b^3)/(12ab^2)

HELP WILL MARK BRAINLIEST

Answers

the answer is Graph D!

Answer: d

brainliest plz

draw an array to show how to arrange 20 chairs into 5 equal rows. Explain what each part of the array represents.

Answers

Since there are 20 chairs and should be arrange into 5 equal rows. So the number of chairs in each row is equal to 20 / 5 which equal to 4. so let x represent a chair in the array. so the drawing should be like:
x x x x
x x x x
x x x x
x x x x
x x x x 
Other Questions
Graph x2 + y2 = 9. What are its lines of symmetry?
How would you write y = –3x2 + 12x – 21 in vertex form?
Find the difference.(3−2x+2x^2)−(4x−5+3x^2)
Which one of the following is a Geometric Sequence?