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Mandarinka [93]
3 years ago
5

The equation is __ ( type your answer in standard form)

Mathematics
2 answers:
Tanya [424]3 years ago
5 0

First, find the slope of the line between the two points using

     m = \dfrac{y_2-y_1}{x_2-x_1}

Then use one point to calculate the b for  y=mx+b.

Step 1: slope

   \begin{aligned}m&=\dfrac{7-4}{-4-2}\\[0.5em]&=\dfrac{3}{-6}\\[0.5em]&=-\dfrac{1}{2}\end{aligned}

Step 2: calculate b

Right now we have y=\frac{1}{2}x+b, so we'll plug in (2,4) for the x and y:

    \begin{aligned}\\4&=-\frac{1}{2}(2)+b\\[0.5em]4&=-1+b\\[0.5em]5&=b\end{aligned}

Now we build our slope-intercept equation: y=-\frac{1}{2}x+5

But, this isn't standard form.  We need to clear out the fraction and then move the x-term to the left.

Can you take it from there?

yan [13]3 years ago
4 0

Answer:

In standard form, the answer should be : 2y + x = 6.

Step-by-step explanation:

See attached image.

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if a line contains a the point (0,-1) and has a slope of 2 which of the following points also lies on the line
Fudgin [204]

Answer:

I think 1 1

Step-by-step explanation:

7 0
4 years ago
B. If instead you divide first to solve the equation, what<br> operation would you need to use last?
Sedbober [7]

Answer:

use  PEDMAS

P: PARENTHESIS

E: EXPONENTS

D: DIVISON

M: MULTIPLICATION

A: ADDITION

S: SUBTRACTION

Step-by-step explanation:

CAN YOU PLS MARK ME BRAINLIEST THANK YOU !

8 0
3 years ago
Find X pleaseee :).
larisa [96]

Answer:

22

Step-by-step explanation:

(5x-7 )+(4x-11)=180 ( it equals 180 because those two angles equal 180)

Then add the similar things together

5x+4x=9x

-7-11= -18

9x-18=180, add 18 on both sides to get 9x alone

9x=180, then divide 180 by 9 to get x alone

x=22

5 0
3 years ago
(c). It is well known that the rate of flow can be found by measuring the volume of blood that flows past a point in a given tim
aleksklad [387]

(i) Given that

V(R) = \displaystyle \int_0^R 2\pi K(R^2r-r^3) \, dr

when R = 0.30 cm and v = (0.30 - 3.33r²) cm/s (which additionally tells us to take K = 1), then

V(0.30) = \displaystyle \int_0^{0.30} 2\pi \left(0.30-3.33r^2\right)r \, dr \approx \boxed{0.0425}

and this is a volume so it must be reported with units of cm³.

In Mathematica, you can first define the velocity function with

v[r_] := 0.30 - 3.33r^2

and additionally define the volume function with

V[R_] := Integrate[2 Pi v[r] r, {r, 0, R}]

Then get the desired volume by running V[0.30].

(ii) In full, the volume function is

\displaystyle \int_0^R 2\pi K(R^2-r^2)r \, dr

Compute the integral:

V(R) = \displaystyle \int_0^R 2\pi K(R^2-r^2)r \, dr

V(R) = \displaystyle 2\pi K \int_0^R (R^2r-r^3) \, dr

V(R) = \displaystyle 2\pi K \left(\frac12 R^2r^2 - \frac14 r^4\right)\bigg_0^R

V(R) = \displaystyle 2\pi K \left(\frac{R^4}2- \frac{R^4}4\right)

V(R) = \displaystyle \boxed{\frac{\pi KR^4}2}

In M, redefine the velocity function as

v[r_] := k*(R^2 - r^2)

(you can't use capital K because it's reserved for a built-in function)

Then run

Integrate[2 Pi v[r] r, {r, 0, R}]

This may take a little longer to compute than expected because M tries to generate a result to cover all cases (it doesn't automatically know that R is a real number, for instance). You can make it run faster by including the Assumptions option, as with

Integrate[2 Pi v[r] r, {r, 0, R}, Assumptions -> R > 0]

which ensures that R is positive, and moreover a real number.

5 0
3 years ago
Similar triangles are congruent.<br> a. - always<br> b. - sometimes<br> c. - never
irina1246 [14]
<span>Two triangles with two sides and a non-included angle equal may or may not be congruent. If two angles on one triangle are equal, respectively, to two angles on another triangle, then the triangles are similar, but not necessarily congruent.</span>
5 0
3 years ago
Read 2 more answers
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