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Serjik [45]
3 years ago
15

To go to dance class at 6:45p.m. bus,Kelly needs 35 minutes to walk home from a friend's house,30 minutes for dinner,and 20 minu

tes to drive to the class. To make class on time,what is the latest time she should leave her friend's house? What is the equation for this problem?
Mathematics
1 answer:
GREYUIT [131]3 years ago
5 0
20+35+30= 1 hr&25 min so she should leave at 5:20
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17
xz_007 [3.2K]

Answer:

Center =  \boxed{1}, \: \boxed{ - 2} \: ; \: Radius =  \boxed{3}

Step-by-step explanation:

{x}^{2}  +  {y}^{2}  - 2x + 4y - 4 = 0 \\  \\  ({x}^{2}  - 2x + 1 - 1) + ( {y}^{2}  + 4y + 4 - 4) - 4 = 0 \\  \\ ( {x}^{2}  - 2x + 1) + ( {y}^{2}  + 4y + 4) - 9 = 0 \\  \\  {(x - 1)}^{2}  +  {(y + 2)}^{2}  = 9 \\  \\ {(x - 1)}^{2}  +  {(y + 2)}^{2}  =  {3}^{2}  \\  \\ equating \: it \: with \\  \\  {(x - h)}^{2}  +  {(y - k)}^{2}  =  {r}^{2}  \\  \\ h = 1 \\ k =  - 2 \\ r = 3 \\  \\ center =  \boxed{1} \: \boxed{ - 2} \:  \: radius =  \boxed{3}

3 0
3 years ago
Help with 7-12 please!​
OLEGan [10]

How to solve 7-10: if a coordinate (x, y) is on the line, then f(x) = y.

7. Since x is 6, look at the graph, which shows that y (or f(x)) is 4. (look at picture)

8. Same thing as 7. you will see that f(x) is 15.

9. The other way around. since we know y = 2, looking at the graph shows us that x = 3.

10. Repeat process of 9. x = 10.

How to solve 11 + 12: slope formula (rise-over-run)

11. (14-4)/(12-6) = 10/6 = 5/3.

12. (16-14)/(18-12) = 2/6 = 1/3.

(If possible brainliest is appreciated :D)

5 0
3 years ago
Question#10 will give brainliest!
Amiraneli [1.4K]

Answer:

B. isolate the x^{2} by using inverse operations.

Step-by-step explanation:

Hope this helps! Brainliest would be much appreciated! Have a great day! :)      

6 0
2 years ago
Read 2 more answers
I need help how do i do this
Anarel [89]

Answer:

no geniune idea

Step-by-step explanation:

7 0
3 years ago
Pls help me to solve this
zloy xaker [14]

Answer:

see below

Step-by-step explanation:

19-3 will be greater

We are multiplying 1/2 *(19-3) which is multiplying by a number less than 1 it will be less than 1

18-3 = 16

1/2 * (19-3)

Using PEMDAS

We do parentheses first

1/2 ( 16)

Then multiply

8

4 0
3 years ago
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