Mathematics, 04.03.2021 04:40 videogamer1192
Point B has coordinates (4,1). The x-coordinate of point A is -8. The distance between point A and point B is 13 units. What are the possible coordinates of point A?
Answers: 1
; 
and 
is unknown
; (4,1) i.e 
and 
![13= \sqrt{[(4-(-8)]^{2} + (1-y_{1})^{2} }\\13= \sqrt{[(4+8)]^{2} + (1-y_{1})^{2} }\\13= \sqrt{12^{2} + (1-y_{1})^{2} }\\13^{2} = 12^{2} + (1-y_{1})^{2} \\169 = 144 +(1-y_{1})^{2}\\169-144 = (1-y_{1})^{2}\\25 = 1 -2y_{1} +y_{1}^{2} \\y_{1}^{2} -2y_{1}+1-25 =0\\y_{1}^{2} -2y_{1}-24 =0\\y_{1}^{2} -6y_{1} + 4y_{1} -24 =0 \\y_{1}(y_{1}-6) +4(y_{1} -6) = 0\\(y_{1}+4)(y_{1}-6) =0\\(y_{1}+4)=0 or (y_{1}-6) =0](/tpl/images/1166/8583/dcab0.png)
or 
or 
Another question on Mathematics
Mathematics, 21.06.2019 17:00
Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.
Answers: 1
Mathematics, 21.06.2019 18:30
Acone with volume 1350 m³ is dilated by a scale factor of 1/3. what is the volume of the resulting cone? enter your answer in the box. m³
Answers: 1
Mathematics, 21.06.2019 20:30
The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle
Answers: 1
Mathematics, 21.06.2019 23:30
The number of members f(x) in a local swimming club increased by 30% every year over a period of x years. the function below shows the relationship between f(x) and x: f(x) = 10(1.3)xwhich of the following graphs best represents the function? graph of f of x equals 1.3 multiplied by 10 to the power of x graph of exponential function going up from left to right in quadrant 1 through the point 0, 0 and continuing towards infinity graph of f of x equals 10 multiplied by 1.3 to the power of x graph of f of x equals 1.3 to the power of x
Answers: 1
You know the right answer?
Point B has coordinates (4,1). The x-coordinate of point A is -8. The distance between point A an...
Questions
Chemistry, 26.06.2019 23:30
Geography, 26.06.2019 23:30
History, 26.06.2019 23:30
Mathematics, 26.06.2019 23:30
Biology, 26.06.2019 23:30
Biology, 26.06.2019 23:30
Mathematics, 26.06.2019 23:30
Mathematics, 26.06.2019 23:30
Biology, 26.06.2019 23:30
Mathematics, 26.06.2019 23:30
