I need help!!!!!!!!!

Mrs. Zamir wants to buy 8 protractors and some erasers for her classroom.She has $30.00. If protractors cost $2.65 each, how muc

goblinko [34]

Mrs. Zamir has $\fbox{\bf\$8.8}$ left to buy eraser.

Further explanation :

Multiplication is a mathematical operation such that two real numbers are performed in such a way that they derive a third number called product.

For example:

There are two numbers $4{\text{ and 5}}$ then multiply both the numbers as,

$4\times5=20$

Therefore, 20 is the product of 4 and 5.

It is given that Mrs. Zamir wants to buy 8 protractors and some erasers for her classroom.

She has total $\$30$ .

If the price of the protractor is $\$2.65$ each.

Therefore, she spends total amount of money on protractor can be calculated by multiplying 8 protractors by 2.65 as,

$\begin{aligned}n&=8\times2.65\\&=21.2\\\end{aligned}$

Thus, she spends $\$21.2$ on protractors.

Now, she has total $\$30$ and $\$21.2$ she spends on protractors.

Therefore, she left with the amount $r$ as,

$\begin{aligned}r&=30-21.2\\&=8.8\\\end{aligned}$

Therefore, she has $\fbox{\bf\$8.8}$ amount left for eraser.

Learn more :

1. Problem on the whole numbers are positive integers brainly.com/question/1852063.

2. Problem on the adding and simplifying the numbers brainly.com/question/894273.

3. Problem on the general form of the equation of the circle brainly.com/question/1506955.

Answer details:

Grade: Junior school

Subject: Mathematics

Chapter: Multiplication and division

Keywords: Mrs. Zamir, protractors, erasers, cost, multiplication, division, addition, subtraction, real numbers, decimal numbers.

8 0

3 years ago

Read 2 more answers

3.8:(4c+3)=2:2 2/19<br><br>Please help me! I really appreciate it!

Sati [7]

Please note that in such questions, the ":" stands for ratio which in turn stands for divide. Thus, the given expression which is:

$3.8:(4c+3)=2:2\frac{2}{19}$ will become:

$\frac{3.8}{4c+3}= \frac{2}{2\frac{2}{19}}$ .....(Equation 1)

Now, we know that 3.8 can be rewritten as $\frac{38}{10}$ . Also, we know that the mixed fraction $2\frac{2}{19}$ can be re-written as:

$2\frac{2}{19}=2+ \frac{2}{19}= \frac{38+2}{19}= \frac{40}{19}$

Using the above two expressions in (Equation 1) we get:

$\frac{\frac{38}{10}}{4c+3}= \frac{2}{\frac{40}{19}}$

$\frac{\frac{38}{10}} {4c+3}= \frac{2\times 19}{40}= \frac{38}{40}$

Cross-multiplication gives:

$38(4c+3)=\frac{40\times 38}{10}$

$4c+3=4$ $4c=1$

$c=\frac{1}{4}$

Or c=0.25

Thus, we may write the value of c as either the decimal 0.25 or the fraction $\frac{1}{4}$ .

8 0

3 years ago

Read 2 more answers

The Great Pyramid is a square pyramid with a base area of 571,536 ft2 and a height of 48 stories. Each story is approximately 10

RUDIKE [14]

To estimate the volume, you will use the formula for finding volume of a pyramid.

You will need to convert the height, given in feet, to yards.

(48 x 10)/3= 160 yards

You also need to convert the area of the base to square yards.

571536 ft.²/ 9 ft.² (1 square yd)= 63,504 yd.².

V = 1/3 BH, where B is the area of the base.

V = 1/3 x 63504 x 160
V = 3,386880 cubic yards

The approximate volume of The Great Pyramid is 3,386,880 yd.³.

4 0

3 years ago

A golf player is trying to make a hole-in-one on the miniature golf green shown.

Flauer [41]

The path of the ball is an illustration of absolute equation.

The equation of the path is: $y =- \frac{12}7|x- 4.8| + 6.4$