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Alecsey [184]
3 years ago
15

- Which of the following is the correct distance between the points (-5, 3) and (7,8)?

Mathematics
1 answer:
JulsSmile [24]3 years ago
7 0

Answer:

13 units

Step-by-step explanation:

(x₁,y₁) = (-5 , 3)   & (x₂ , y₂) = (7 ,8)

Distance = \sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}} \\

              = \sqrt{(7-[-5])^{2}+(8-3)^{2}} \\\\= \sqrt{(7+5)^{2}+(8-3)^{2}} \\\\=  \sqrt{(12)^{2}+(5)^{2}}\\\\=\sqrt{144+25}\\\\=\sqrt{169}\\\\= 13

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Pls help me
Mashutka [201]

Answer:

A is the answer because...

Step-by-step explanation:

Let's narrow it down, so it is not D because 8/2=4 but 64/4=16, so already they don't share a slope. It is not B because the numbers don't work together like they should, since we are trying to prove proportionality. It is not C because we are not trying to square the numbers but find a similarity between the numbers, the same slope I mean. So that leaves A which has  the slope of 2, test it out now. 0 and 0 are the same, 4/2=2, 8/4=2, 12/6=2. So now you know that A is the correct answer.

Hope you understand! :)

3 0
3 years ago
Rachel drove 756 miles in 12 hours.<br> At the same rate, how many miles would she drive in 8 hours?
kvv77 [185]

Answer:

504 miles

Step-by-step explanation:

you would do 756÷12 which equals 63.... For every hour that you drive its 63 miles. Then you do 63×8 to get 504

4 0
3 years ago
What is the midpoint of AB?
spayn [35]

Answer: Point G.

Step-by-step explanation:

Count the number of spaces between points A and B. Then divide that number by 2 and count that many spaces from one point.

14/2=7

I hope this helps!! Pls mark brainliest :)

6 0
2 years ago
Read 2 more answers
A girl found dress fo £65.50 and there was an 15% sale on
Alika [10]

Answer: $65.50 - 15% = 55.675


Step-by-step explanation:

Conversion a decimal number to a fraction: 65.50 = 655

10

= 131

2

Conversion a decimal number to a fraction: 9.825 = 9825

1000

= 393

40

Subtract: 65.5 - 9.825 = 131

2

- 393

40

= 131 · 20

2 · 20

- 393

40

= 2620

40

- 393

40

= 2620 - 393

40

= 2227

40


The common denominator you can calculate as the least common multiple of the both denominators - LCM(2, 40) = 40

4 0
3 years ago
Read 2 more answers
Jo has an appointment at 3pm. She has to travel 21 miles and will drive at an average speed of 30 mph. To arrive exactly on time
GREYUIT [131]
2:18pm

21/30*60=42min trip
5 0
3 years ago
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