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3 years ago

What is the distance between the points (3, 7) and (15, 16) on a coordinate plane?

Mathematics

1 answer:

EastWind [94]3 years ago

5 0

Answer:

4.123. Rounded to the nearest tenth, you get 4.1 units.

Step-by-step explanation:

I've included a snapshot of my work.

I hope this helps. If you have any more questions, please feel free to post them and someone will be able to help you, whether it's myself or others. Please leave a like, rating, and if possible, Brainliest. Have a great day!

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Stella buys 6 tacos and 4 enchiladas for 52 dollars. Eliana buys 7 tacos and 9 enchilladas for 78 dollars.

Firdavs [7]

Answer:

Let tacos be x and enchiladas be y

6 tacos + 4 enchiladas = 52

becomes

6x+4y=52

^^that's our first equation

Now, the second equation

7 tacos + 9 enchiladas = 78

7x+9y = 78

^^^that's our second equation

Isolate y in the first equation:

6x+4y=52

4y=52-6x

y = (52-6x)/4

^^^Let's call this equation 3

Now, sub-in equation 3 into equation 2

*replace the y*

Equation 2: 7x+9y = 78

Sub-in

7x+ 9 ( (52-6x)/4) = 78

Do some algebra (get your x terms on one side) and you will find your x value

7x + 117 - 13.5x = 78

(7x-13.5x) = 78-117 *get your x terms on one side

x=6

That's the cost of one taco.

Now, find y. Pick an equation (1,2 or 3). Let's pick 3 since y is already isolated.

All you do is plug in your x value.

Equation 3: y = (52-6x)/4

y= (52 -6(6))/4

...

You should be able to solve this on your own

Step-by-step explanation:

:)) You can solve for y now

5 0

2 years ago

What diagonals does a kite intersect at?

Romashka [77]

The diagonals of a kite meet at a right angle.

3 0

3 years ago

Numerically estimate the slope of y = f(x) at r = a. 1. f(x) = x^2 - 2x, a = 2 2. f(x) = sin 2x, a = 0

REY [17]

Answer:

1. Slope at a=2 is 2.

2. Slope at a=0 is 2.

Step-by-step explanation:

We need to find the slope of y = f(x) at x = a.

The given function is

$f(x)=x^2-2x$

It can be written as

$y=x^2-2x$

Differentiate with respect to x.

$y'=2x-2$

Substitute x=2 to find the slope of y = f(x) at a=2.

$y'=2(2)-2$

$y'=4-2$

$y'=2$

Therefore the slope of function at a=2 is 2.

The given function is

$f(x)=\sin 2x$

It can be written as

$y=\sin 2x$

Differentiate with respect to x.

$y'=2\cos 2x$

Substitute x=0 to find the slope of y = f(x) at a=0.

$y'=2\cos 2(0)$

$y'=2(1)$

$y'=2$

Therefore the slope of function at a=0 is 2.

7 0

3 years ago

I need help finding x.

amid [387]

Maybe using a protractor might help. But know that a straight angle equals 180. I don't really understand it. But use the Pythagorean Theorem so a^2+B^2=c^2

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3 years ago

greg spent 3 hours practicing his guitar . he spent the same amount of time practicing each of 4 songs. how many minutes did gre

umka21 [38]

He spent 45 minutes on each song

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3 years ago