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LiRa [457]
4 years ago
10

A(4,-7) B(-2,1) find AB

Mathematics
1 answer:
Natali5045456 [20]4 years ago
8 0

\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\A(\stackrel{x_1}{4}~,~\stackrel{y_1}{-7})\qquadB(\stackrel{x_2}{-2}~,~\stackrel{y_2}{1})\qquad \qquadd = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}\\\\\\AB=\sqrt{[-2-4]^2+[1-(-7)]^2}\implies AB=\sqrt{(-2-4)^2+(1+7)^2}\\\\\\AB=\sqrt{(-6)^2+8^2}\implies AB=\sqrt{36+64}\implies AB=\sqrt{100}\implies AB=10

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⚡️⚡️Really need help, would appreciate it⚡️⚡️
pentagon [3]

Answer:

The answer to your question is letter A. Regular size is cheaper than Economy size by $0.0003 per gram

Step-by-step explanation:

Cost of 1 gr of economy size

  5000 gr (5 kg) -------------------  $ 5.15

         1 gr            --------------------     X

x = 1 x 5.15 / 5000 = $0.0010

Cost of 1 gr of regular size

  820 gr -------------------   $0.60

       1 gr --------------------   x

x = 1 x 0.6 / 820 = $ 0.0007

Difference of cost  = $0.0010 - $0.0007 = $0.0003

3 0
3 years ago
Write -3i + (3/4+2i) - (9/3+3i) as a complex number in standard form
bogdanovich [222]

Answer:

=  -3i + (3/4+2i) - (9/3+3i)

= (3/4 - 9/3) + (-3 + 2 -3)i

= -9/4 -4i

4 0
4 years ago
A local car dealership sells Buicks and Hondas. The following data shows the number of buyers this month according to the brand
Lina20 [59]

Answer:

16%

Step-by-step explanation:

The data provided on brand purchased by age group is.

\begin{array}{ccc}Age&Buick&Honda\\Under\ 40&6&17\\40\ or\ older&19&8\end{array}

A total of 50 cars were sold this month.

Since the number of buyers 40 years or older that purchased a ​Honda is 8, the percentage is:

P=\frac{8}{50}=0.16=16\%

16% of buyers were 40 years or older and purchased a​ Honda.

8 0
3 years ago
Seven less than twice a<br> number is negative five.<br> What is the number?
otez555 [7]

Answer:

n = 1

Step-by-step explanation:

Represent the number by n.  Then "seven less than twice a number is -5 becomes 2n - 7 = -5

Next we must solve for n.  Adding 7 to both sides yields 2n = 2, so that

n = 1

5 0
3 years ago
How do you find vertical asymptotes?
Keith_Richards [23]
You just have to set the denominator to zero and solve for x
7 0
3 years ago
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