Help ASAP

HELP ASAP

oksano4ka [1.4K]

9514 1404 393

Answer:

c. x = 7-t; y = -1/(t -7)

Step-by-step explanation:

To find the parametric equation for x, use the equation for t and solve for x.

t = 7-x

x = 7 -t . . . . . . add x-t to both sides

__

To find the parametric equation for y, substitute the equation for x.

y = 1/x

y = 1/(7-t)

To make this match the available choices, we need to multiply numerator and denominator by -1.

y = -1/(t -7)

The parametric equations are ...

x = 7 -t; y = -1/(t -7) . . . . . . matches choice C

3 0

3 years ago

Read 2 more answers

Ashley's older brother, Jamaal, is planning to ride his bicycle from Los Angeles to Washington D.C., a distance of 2,668 miles,

GenaCL600 [577]

Answer:

60 miles

Step-by-step explanation:

This means the number of days he will ride is

45 days

Hence, the minimum number of miles that Jamaal must ride each day with his new plan is calculated as:

Total number of miles/Number of days

= 2668 miles /45 days

= 59.288888889 miles

Approximately to the nearest whole number = 60 miles

Hence, the minimum number of miles Jamal must ride each day is 60 miles

4 0

3 years ago

Which capital letters in Virginia produce the same letter after being rotated 180 degrees

Westkost [7]

The answer is I and N

3 0

3 years ago

Rida and elisa are each paid by the hour. rida worked 5 1\2. hours and earned 77. elisa worked 3 3\4 HOURS AND EARNED 60. WHOSE

skad [1K]

Rida:
5 1/2 :77
5.5 : 77
Divide both sides by 5.5 to get $/hour:
1:14

Elisa:
3 3/4:60
3.75:60
Divide both sides by 3.75 to get $/hour:
1:16

16 is bigger than 14 so Elisa earns more.

Hope this helps :)

5 0

4 years ago

Mrs Grey is buying decorative ribbon of three different colors: blue, silver, and yellow. Blue ribbon is sold in rolls of 15 met

olganol [36]

Answer:

4 rolls of blue ribbon,

5 rolls of silver ribbon,

3 rolls of yellow ribbon.

Step-by-step explanation:

We have been given that Mrs Grey is buying decorative ribbon of three different colors: blue, silver, and yellow. Blue ribbon is sold in rolls of 15 meters, silver is sold in rolls of 12 meters, and yellow comes in rolls of 20 meters.

As Mrs. Grey needs to have same length of each ribbon, so we will find the least common multiple of 15, 12 and 20.

Multiples of 15 are: 15, 30, 45, 60, 75, 90,...

Multiples of 12 are: 12, 24, 36, 48, 60, 72, 84,...

Multiples of 20 are: 20, 40, 60, 80,100,...

We can see that 60 is the least common multiple of 15, 12 and 20.

$\text{The smallest number of rolls of blue ribbon}=\frac{60}{15}=4$

Therefore, Mrs. Grey should buy 4 rolls of blue ribbon.

$\text{The smallest number of rolls of silver ribbon}=\frac{60}{12}=5$

Therefore, Mrs. Grey should buy 5 rolls of silver ribbon.

$\text{The smallest number of rolls of yellow ribbon}=\frac{60}{20}=3$

Therefore, Mrs. Grey should buy 3 rolls of yellow ribbon.

3 0

4 years ago