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3 years ago

A triangle is rotated 90° about the origin. Which rule describes the transformation?

Mathematics

1 answer:

enyata [817]3 years ago

4 0

Answer:

(x,y) -> (-y,x), second option.

Step-by-step explanation:

Rotation of 90 degrees about the origin:

The rule for a rotation of a point (x,y) 90 degrees about the origin is given by:

(x,y) -> (-y,x)

This is that the question asks, and so, this is the answer, which is the second option.

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Hi i need you to convert 9/15 into a decimal and show work please!

kozerog [31]

Answer:

0.6

Step-by-step explanation:

9 is the numerator and 15 is the denominator

divide 9 ÷ 15

which is 0.6

3 0

2 years ago

Read 2 more answers

3. The total cost for 9 bracelets, including shipping was $72. The shipping charge was $9. Define your variable and write an equ

ikadub [295]

Answer:

The equation that models the cost of each bracelet is $72=9x+9$ . Cost of each bracelet is $7.

Step-by-step explanation:

Let the cost of each bracelet is defined by the variable x.

Cost of 9 bracelet is 9x. The shipping cost is $9. Therefore the total cost of 9 bracelets, including shipping is

$\text{Total Cost}=9x+9$

The total cost for 9 bracelets, including shipping is $72.

$72=9x+9$

Subtract 9 from both sides

$72-9=9x+9-9$

$63=9x$

Divide both sides by 9.

$7=x$

Therefore the cost of each bracelet without shipping changes is $7.

8 0

2 years ago

15% of 20 is ____ find the percentage of the number

Aliun [14]

The answer is 3, just do 20*0.15 (covert 15% into a decimal).

6 0

2 years ago

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Alex borrowed $12.50 from his friend Daniel he paid him back $8.75 how much does he still owe

3241004551 [841]

Answer:

$3.75

Step-by-step explanation:

$12.50-$8.75=$3.75

Hope this helps!

5 0

2 years ago

A taxi service charges a flat fee of $1.25 and $0.75 per mile. If Henry has $14.00, which of the following shows the number of m

Effectus [21]

Answer:

The total cost of the taxi service is the flat free and the total amount that is based on the distance. Let x be this distance. The equation that would best represent the situation is,

1.25 + 0.75x = 14

Solving for x gives the answer of 17. Thus, Henri can afford to travel 17 miles.

Step-by-step explanation:

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2 years ago