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Alex_Xolod [135]
3 years ago
10

Please help me ASAP

Mathematics
2 answers:
Colt1911 [192]3 years ago
7 0
First,let's find the slope-intercept form of equation which is y=mx+b, where y and x are coordinates, m is the slope and ,c is the y-intercept
y+6.75=0.25(x-1)                                                   y=0.25(2)-6.5
y+6.75-6.75=0.25x -0.25 -6.75                            y=-6
y=0.25x-6.5   
(2,-6)  is the only correct answer I think is on the line with this equation.

Rom4ik [11]3 years ago
3 0

Answer:

Option B and C, i.e., (-3,-7.75) and (4,-6)

Step-by-step explanation:

The given equation is

y+6.75=0.25(x-1)

We need to find ordered pairs which are on the line.

The given equation can be rewritten as

y=0.25x-0.25-6.75

y=0.25x-7

For x=2,

y=0.25(2)-7=0.5-7=-6.5\neq -6

For x=-3,

y=0.25(-3)-7=-0.75-7=-7.75

For x=4,

y=0.25(4)-7=1-7=-6

For x=7,

y=0.25(7)-7=1.75-7=-5.25\neq 5

Therefore, points (-3,-7.75) and (4,-6) are on the line. Options B and C are correct.

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4[5-8(4c-3)]=12(1-13c)-8
goblinko [34]

\boxed{c = -4}

First, we will use the distributive property (order of operations) to simplify the equation:

(4)(5) + (4)(−8(4c−3)) = (12)(1) + (12)(−13c)+ (−8) =

20 + (−128c) + 96 = 12 + (−156c)+ (−8)

Now, we will combine like terms to simplify the equation:

(−128c) + (20 + 96) = (−156c) + (12+ (−8) =

−128c + 116 = −156c + 4

Now we will add 156 to both sides, using inverse operations.

−128c + 116 + 156c = −156c + 4 + 156c =

28c + 116 = 4

Now we will subtract 116 from both sides:

28c + 116 − 116 = 4 − 116 =

28c = −112

Lastly, we will divide both sides by 28:

28c/28 = c

-112/28 = -4

The equation now looks like:

c = -4

Therefore, your answer is -4.

8 0
4 years ago
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Using the question from above Jenny shape what is the volume of her two cubes combined
NemiM [27]

Answer:

14•14•14= 2744

7•7•7= 343

2744+343= 3087

Step-by-step explanation:

all together it should be 3087

sorry if I'm wrong.

6 0
4 years ago
How can 25 e42 n=1 be rewritten?
Marizza181 [45]

Answer:

The 'n = 1' below sigma represents the <em>lower </em><em>bound</em><em>.</em> meaning the number from which you start adding.

'25' above sigma is the <em>upper </em><em>bound</em><em>.</em>

In general it means adding 42 from 1 to 25 times.

so 42(25).

8 0
2 years ago
Verify that the conclusion of Clairaut’s Theorem holds, that is, uxy = uyx, u=tan(2x+3y)
choli [55]

Answer: Hello mate!

Clairaut’s Theorem says that if you have a function f(x,y) that have defined and continuous second partial derivates in (ai, bj) ∈ A

for all the elements in A, the, for all the elements on A you get:

\frac{d^{2}f }{dxdy}(ai,bj) = \frac{d^{2}f }{dydx}(ai,bj)

This says that is the same taking first a partial derivate with respect to x and then a partial derivate with respect to y, that taking first the partial derivate with respect to y and after that the one with respect to x.

Now our function is u(x,y) = tan (2x + 3y), and want to verify the theorem for this, so lets see the partial derivates of u. For the derivates you could use tables, for example, using that:

\frac{d(tan(x))}{dx} = 1/cos(x)^{2} = sec(x)^{2}

\frac{du}{dx}  =  \frac{2}{cos^{2}(2x + 3y)} = 2sec(2x + 3y)^{2}

and now lets derivate this with respect to y.

using that \frac{d(sec(x))}{dx}= sec(x)*tan(x)

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Now if we first derivate by y, we get:

\frac{du}{dy}  =  \frac{3}{cos^{2}(2x + 3y)} = 3sec(2x + 3y)^{2}

and now we derivate by x:

\frac{du}{dydx} = \frac{d(3*sec(2x + 3y)^{2} )}{dy}  = 3*2sec(2x + 3y)*sec(2x + 3y)*tan(2x + 3y)*2 = 12sec(2x + 3y)^{2}tan(2x + 3y)

the mixed partial derivates are equal :)

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mestny [16]

Answer:

2/5

Step-by-step explanation:

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6 0
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