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Slav-nsk [51]
2 years ago
14

Need help failing math

Mathematics
2 answers:
faust18 [17]2 years ago
8 0

Answer:

6,-9

Step by step explaination

<em><u>First</u></em><em><u> </u></em><em><u>yo</u></em><em><u>u</u></em><em><u> </u></em><em><u>have</u></em><em><u> </u></em><em><u>got</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>number</u></em><em><u> </u></em><em><u>(</u></em><em><u>4</u></em><em><u>-</u></em><em><u>7</u></em><em><u>)</u></em>

<em><u>use</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>formula</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>transform</u></em><em><u>ation</u></em><em><u> </u></em><em><u>by</u></em><em><u> </u></em><em><u>adding</u></em><em><u> </u></em><em><u>2</u></em><em><u> </u></em>

Olegator [25]2 years ago
8 0

Answer:

(8, - 14 )

Step-by-step explanation:

Since the dilatation is centred at the origin, then multiply the coordinates by 2

(4, - 7 ) → (2(4), 2(- 7) ) → (8, - 14 )

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Identify the slope and intercept of the following linear equation y=3/4x-2
Anon25 [30]

y =  \frac{3}{4} x - 2 \\ 2 =  \frac{3}{4}x  - y \\ 1 =  \frac{3}{4 \times 2} x -  \frac{y}{2}  \\  \frac{x}{ \frac{8}{3} }  -  \frac{y}{2}  = 1

So x intercept is 8/3

Hope it helps...

Regards;

Leukonov/Olegion.

3 0
3 years ago
Read 2 more answers
What is the solution of 3|x – 5| + 2 = 20?
ziro4ka [17]
X=11,-1 is the right answer
5 0
3 years ago
Read 2 more answers
As part of a screening process, computer chips must be operated in an oven at 145 °C. Ten minutes after starting, the temperatur
Novosadov [1.4K]

Answer:

Step-by-step explanation:

I solved this using initial conditions and calculus, so I hope that's what you are doing in math.  It's actually NOT calculus, just a concept that is taught in calculus.

The initial condition formula we need is

y=Ce^{kt}

Filling in our formula with the 2 conditions we are given:

65=Ce^{10k}   and   85=Ce^{15k}

With those 2 equations, we have 2 unknowns, the C (initial value) and the k (the constant). We know that the initial value (or starting temp) for both conditions is the same, so we solve for C in one equation, sub it into the other equation and solve for k.  If

65=Ce^{10k} then

\frac{65}{e^{10k}}=C which, by exponential rules is the same as

C=65e^{-10k}

Since that value of C is the same as the value of C in the other equation, we sub it in:

85=65e^{-10k}(e^{15k})

Divide both sides by 65 and use the rules of exponents again to get

\frac{85}{65}=e^{-10k+15k} which simplifies down to

\frac{85}{65}=e^{5k}

Take the natural log of both sides to get

ln(\frac{85}{65})=5k

Do the log thing on your calculator to get

.2682639866 = 5k and divide both sides by 5 to find k:

k = .0536527973

Now that we have k, we sub THAT value in to one of the original equations to find C:

65=Ce^{10(.0536527973)}

which simplifies down to

65=Ce^{.536527973}

Raise e to that power on your calculator to get

65 = C(1.710059171) and divide to solve for C:

C = 38.01038064

Now sub in k and C to the final problem when t = 23:

y=38.01038064e^{(.0536527973)(23)} which simplifies a bit to

y=38.01038064e^{1.234014338}

Raise e to that power on your calculator to get

y = 38.01038064(3.434991111) and

finally, the temp at 23 minutes is

130.565

6 0
3 years ago
What is the inverse of the function f(x) = 3x – 2?<br> f-1(x) =
Eddi Din [679]

Answer:

\frac{x + 2}{3}

Step-by-step explanation:

Replace y with f(x).

y = 3x - 2

Swap x and y and solve for y

x = 3y - 2

x + 2 = 3y

\frac{x + 2}{3}  = y

7 0
3 years ago
Solve the simultaneous equations.<br>3x-y=1, 2x + 5y = 41​
inessss [21]
Y=3x-1, Y=-2/5x + 41/5
3 0
3 years ago
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