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coldgirl [10]
3 years ago
9

If Blake wanted to use the Substitution method to solve the following system of equations, what could be a good first

Mathematics
1 answer:
Oduvanchick [21]3 years ago
3 0

Answer:

solve the second equation for x

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Solve the differential equation using the method of undetermined coefficients
yuradex [85]
First: the homogeneous solutions: the characteristic equation is4r^2 - 4r - 3 = 0which has roots r = 3/2, -1/2 hence the homogeneous solution isy = c1.exp(-x/2) + c2.exp(3x/2)

next you need the general form for the guess for yp and that isyp = A1cos(2x) + A2sin(2x)
Now substitute that into the equation and solve for A1, A2.
5 0
3 years ago
What is the inverse of f(x)=3x-1/4
spin [16.1K]

Hey there!!

Question: What is the inverse of f(x)=3x-1/4???

Answer: <u><em>f^-1(x)=1/12+x/3 </em></u>

Don't forget to mark me <em><u>Brainliest </u></em>!!!!

Hope this helped:) Have an awesome day!!

4 0
3 years ago
1..Suppose an experiment has five equally likely outcomes: E1, E2, E3, E4, E5. Assign probabilities to each outcome and show tha
stellarik [79]

Answer:

1.

P(E1)=P(E2)=P(E3)=P(E4)=P(E5= )1/5

2.

P(E1)=0.4

P(E2)= 0.26

P(E3)=0.34

3.

No the probability assignments are invalid

Step-by-step explanation:

1

Total number of possible outcomes = 5

<u>Equation (4.3)</u>

0< P(Ei)<1

<u>Equation (4.4)</u>

P(E1) + P(E2) +........+P(En)=1

As the outcomes are equally likely therefore,

Probability for each outcome= P(Ei) = 1/5

2

Total number of outcomes = 50

Outcomes for event E(1)= 20

Outcomes or event E(2)= 13

Outcomes or event E(3) = 17

P(Ei)= (number of outcomes for event Ei/ Total number of outcomes)

P(E1)=20/50=0.4

P(E2)= 13/50=0.26

P(E3)=17/50=0.34

3

P(E1) .10,

P(E2) .15,

P(E3) .40,

P(E4) .20

0.1 +0.15+0.40+0.20=0.85<1

According to  equation (4.4) the probability assignments are invalid as the sum of probabilities for all outcomes must be equal to 1.

7 0
3 years ago
One lap around the lake is 7/10 mile.<br> Dasha runs 9 laps around the lake.
Fynjy0 [20]

Answer:

63/10 = 6 3/10 miles

Step-by-step explanation

  1. Multiply 7 times 9 = 63
  2. Simplify 63/10 and get 6 3/10
  3. So, Dasha runs 6 3/10 miles
6 0
3 years ago
Please tell me what the Point Slope Slope Intercept Standard is for these graphs
iVinArrow [24]

Answer:

<u>1st graph</u>:

Slope-intercept is y = -7/2x + 3

Point Slope is y + 4 = -7/2(x - 2)

Standard is 7x + 2y = 6

<u>2nd graph</u>:

Slope-intercept is y = 1/2x - 4

Point Slope is y + 2 = 1/2(x - 4)

Standard is x - 2y = 8

<u>3rd graph</u>:

Slope-intercept is y = 3x - 3

Point Slope is y - 3 = 3(x - 2)

Standard is 3x - y = 3

<u>4th graph</u>:

Slope-intercept is y = -2/7x - 4

Point Slope is y + 2 = -2/7(x + 7)

Standard is 2x + 7y = - 28

Step-by-step explanation:

Point Slope formula⤵⤵⤵:

y - y _{1} = m(x - x _{1})

Slope-intercept formula⤵⤵⤵:

y = mx + b

Standard formula⤵⤵⤵:

Ax + By = C

Sorry this took a while, I was doing other stuff for school. I also had to relearn point slope for this, so it took me some time to figure it out. Hope this helps though :)

5 0
3 years ago
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