All categories

3 years ago

Maria is holding a garage sale. She is selling her old tapes $2 for 8 tapes. How much will 20 tapes cost?

Mathematics

1 answer:

Marizza181 [45]3 years ago

7 0

Answer:

20 tapes will cost $5.

Step-by-step explanation:

2/8=x/20

cross product

8*x=2*20

8x=40

x=40/8

x=5

You might be interested in

It takes 45 minutes to travel 5km and the maximum hours the African natives can travel per day.how many days will it takes them

levacccp [35]

Answer:

N/A

Step-by-step explanation:

Reason: Not enough information

7 0

3 years ago

Answer the ones you know

vladimir2022 [97]

For question 2 it is 15

Because: 4 time 6 is 24 and then you minus 9 which is 15

So there you have it the answer is 15

8 0

3 years ago

Read 2 more answers

Line segment XY is located at X(2, 6) and Y(4,8). If the line segments is dilated by a scale factor of 2 with a center of dilati

Kamila [148]

Given:

Line segment XY is located at X(2, 6) and Y(4,8).

The line segments is dilated by a scale factor of 2 with a center of dilation of T(-3, 4).

To find:

The coordinates of X'

Solution:

If a figure dilated by a scale factor k with a center of dilation (a,b), then the rule of dilation is:

$(x,y)\to (k(x-a)+a,k(y-b)+b)$

The line segments is dilated by a scale factor of 2 with a center of dilation of T(-3, 4). So, the rule of dilation is

$(x,y)\to (2(x-(-3))+(-3),2(y-4)+4)$

$(x,y)\to (2(x+3)-3,2y+2(-4)+4)$

$(x,y)\to (2x+6-3,2y-8+4)$

$(x,y)\to (2x+3,2y-4)$

The coordinate of X are (2,6).

$X(2,6)\to X'(2(2)+3,2(6)-4)$

$X(2,6)\to X'(4+3,12-4)$

$X(2,6)\to X'(7,8)$

Therefore, the coordinates of X' are (7,8).

7 0

3 years ago

a city council has 12 members. Five are democratss and seven are republicans. How many ways can a four member comitte be selecte

Nostrana [21]

Answer: 495ways

Step-by-step explanation:

Selecting some b people from a group of people are based on combination principle.

If we are selecting "r'' people from a total number of 'n' people, we will have;

nCr = n!/(n-r)!r!

Since 4 people are to be selected from a committee of 5democrats and 6republicans,

Note that the question is not specific as to how many from Republicans and Democrats to select that will make the 4people,

Therefore, the selection can be done in this manner

- 0people from democrats and 4peoples from Republicans

5C0 × 7C4 = 5!/5!0! × 7!/3!4!

= 1×35= 35ways

- 1people from democrats and 3peoples from Republicans

5C1 × 7C3 = 5×35 = 175ways

- 2peoples from democrats and 2peoples from Republicans

5C2 × 7C2 = 10 × 21 = 210ways

- 3peoples from democrats and 1people from Republicans

5C3 × 7C1 = 10 × 7 = 70ways

- 4peoples from democrats and 0people from Republicans

5C4 × 7C0 = 5 × 1 = 5ways

Adding all possible combinations

35+175+210+70+5

= 495ways

3 0

3 years ago

How do you call a number next to a fraction

Serhud [2]

It doesn't have a formal name. However, since a fraction is division, you can call it a quotient.

6 0

3 years ago