3 years ago

What does • in math mean?

Mathematics

2 answers:

Blizzard [7]3 years ago

7 0

multiplication

hope this helped <3

hjlf3 years ago

4 0

. Signifies multiplication

You might be interested in

How do you write 75x-20 in to a story

maks197457 [2]

Sarah had gotten $75 from every lawn she mowed. she mowed x lawns. after multiplying 75 by x, she realized she owed her mother $20.

5 0

4 years ago

How many days would it take Martin to swim swim 60000 meters

PolarNik [594]

Answer:

300

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

Yis inversely proportional to the square of x.

PtichkaEL [24]

Answer:

(a) $y = \frac{4}{x^2}$

(b) $x = \frac{2}{5}$

Step-by-step explanation:

Given

Variation: Inverse proportional.

This is represented as:

$y\ \alpha\ \frac{1}{x^2}$

See attachment for table

Solving (a):

First convert variation to equation

$y = k\frac{1}{x^2}$

From the table:

$(x,y) = (1,4)$

So, we have:

$4 = k * \frac{1}{1^2}$

$4 = k * \frac{1}{1}$

$4 = k * 1$

$4 = k$

$k = 4$

Substitute 4 for k in $y = k\frac{1}{x^2}$

$y = 4 * \frac{1}{x^2}$

$y = \frac{4}{x^2}$

Solving (b): x when y = 25.

Substitute 25 for y in $y = \frac{4}{x^2}$

$25 = \frac{4}{x^2}$

Cross Multiply

$25 * x^2 = 4$

Divide through by 25

$x^2 = \frac{4}{25}$

Take positive square roots of both sides

$x = \sqrt{\frac{4}{25}$

$x = \frac{2}{5}$

4 0

3 years ago

If the wholesale price of a pair of shoes is $32.00, and the markup is 55%, find the selling price of the item.

Lena [83]

Answer:

$49.6

Step-by-step explanation:

Given that :

Wholesale price, p = $32

Markup percentage = 55%

Selling price = wholesale price * ( 1 + Markup percentage)

Selling price = $32(1 + 0.55)

Selling price = $32(1.55)

Selling price = $49.6

3 0

3 years ago

There are 48 students in a school band. The ratio of girls to boys is 5:7. How many girls are in the band? How many boys are in

ASHA 777 [7]

Step by step explanation:
5:7
= 5+7 = 12
48 ÷ 12 = 4
1 part of ratio = 4
4 x 7 = 28
so there are 28 boys.

3 0

3 years ago

Read 2 more answers