All categories

3 years ago

FInd the length of a segment that has endpoints H(2,-3) and J(12,7)

Mathematics

1 answer:

N76 [4]3 years ago

5 0

d =sqrt ((x2-x1)^2 +(y2-y1)^2)

sqrt((12-2)^2 +(7--3)^2)

sqrt(10^2+10^2)

sqt(100+100)

sqrt(200)

sqrt(100)sqrt(2)

10sqrt(2)

Choice B

You might be interested in

If tan = 12/5 and cos = -5/13, then what is sin?

Over [174]

9514 1404 393

Answer:

sin -12/13

Step-by-step explanation:

You can use the identity ...

tan = sin/cos

to solve for sine:

sin = cos·tan

sin = (-5/13)(12/5) =

sin -12/13

4 0

2 years ago

a cleaning crew clean 5 offices in 6 hours. how many offices can they clean in 12 hours? someone plz help me!

Lena [83]

Answer:

10 offices

Step-by-step explanation:

the ratio is 5/6 so if the time is doubles the number of offices cleaned also doubles.

5/6 x 2 =10/12 so, 10 offices cleaned.

7 0

3 years ago

A group of veterinarians at a major veterinary hospital was interested in investigating a possible link between enteroliths, sto

klemol [59]

C. all horses that are diagnosed with enteroliths

3 0

3 years ago

Determine the equation of the line that passes through the points of intersection of the graphs of the quadratic functions f(x)

timofeeve [1]

Answer: $x-2y-2=0$

Step-by-step explanation:

Given :

$f(x) = x^2 - 4 \\ g(x) = - 3x^2 + 2x + 8$

Point of intersection :

$f(x)=g(x)\\x^2-4=-3x^2+2x+8\\4x^2-2x-12=0\\2x^2-x-6=0\\2x^2-4x+3x-6=0\\2x(x-2)+3(x-2)=0\\(x-2)(2x+3)=0\\x=2\,,\,\frac{-3}{2}$

$x=2\,;f(2)=2^2-4=0\\x=\frac{-3}{2}\,; f\left ( \frac{3}{2} \right )=\left ( \frac{3}{2} \right )^2-4=\frac{-7}{4}=-1.75$

So, we have points $\left ( 2,0 \right )\,,\,\left ( -1.5,-1.75\ \right )$

Equation of line passing through two points $\left ( x_1,y_1 \right )\,,\,\left ( x_2,y_2 \right )$ is given by $y-y_1=\frac{y_2-y_1}{x_2-x_1}\left ( x-x_1 \right )$

Let $\left ( x_1,y_1 \right )=\left ( 2,0 \right )\,,\,\left ( x_2,y_2 \right )=\left ( -1.5,-1.75\ \right )$

So, equation is as follows :

$y-0=\frac{-1.75-0}{-1.5-2}\left ( x-2 \right )\\y=\frac{-1.75}{-3.5}\left ( x-2 \right )\\y=\frac{1}{2}(x-2)\\2y=x-2\\x-2y-2=0$

4 0

3 years ago

A child got 16.67/20 on a test. what is their grade in percent form?

solong [7]

Answer:

83.4% or 83%

Step-by-step explanation:

when trying to find a percent, divide the numerator (# of correct answers) by the denominator (# of total questions possible to get correct)

Which would be 16.67 divided by 20 which equals .8335. Move the decimal point over two placements which would be 83.35. I rounded it up to 83.4. If trying to find a whole number not a decimal it would be 84%. Depending on the grading scale, it would be a B.

3 0

2 years ago