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3 years ago

NEED AN ANSWER BEFORE 2:40!!!

Mathematics

2 answers:

Evgesh-ka [11]3 years ago

6 0

Answer:

(x+3)², if looking for x, X = -3

Step-by-step explanation:

X²+6x+9 is a perfect square as you immediately can see that 3+3 = 6 and 3*3 = 9.

I used the generic rectangle to solve it, 9 into top right corner and then x² onto the bottom left, multiplying eachother to get 9x² which is formed by 3x and 3x multiplied so you would have (x+3) (x+3).

I'll have a picture.

Sati [7]3 years ago

5 0

Answer:

Step-by-step explanation:

X^2 and 9 are two squares, while 6 can be obtain my multiplying x and 3 by 2.

so this is a square of a binomial

(x+3)^2

(x+3)(x+3)

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8r.) Find the amount A in an account after t years given the following conditions.

Elden [556K]

You can rewrite the differential equation as

$50\cdot\dfrac{dA}{A}=dt\\\\50\ln{(A)}+C=t\qquad\mbox{integrating}\\\\t=50\ln{\left(\dfrac{A}{4000}\right)}\qquad\mbox{applying the boundary condition}$

This last expression looks like the one you describe. If you solve for A instead of t, you get

$A=4000\cdot e^{0.02t}$

This is the same as your other answer.

8 0

3 years ago

Read 2 more answers

The function f(t) = 4t^2 − 8t + 6 shows the height from the ground f(t), in meters, of a roller coaster car at different times t

andreev551 [17]

Answer:

C - f(t) = 4(t − 1)^2 + 2; the minimum height of the roller coaster is 2 meters from the ground.

Step-by-step explanation:

Here we're asked to rewrite the given equation f(t) = 4t^2 − 8t + 6 in the form f(t) = a(t - h)^2 + k (which is known as the "vertex form of the equation of a parabola.") Here (h, k) is the vertex and a is a scale factor.

Let's begin by factoring 4 out of all three terms:

f(t) = 4 [ t^2 - 2t + 6/4 ]

Next, we must "complete the square" of t^2 - 2t + 6/4; in other words, we must re-write this expression in the form (t - h)^2 + k.

(To be continued)

3 0

3 years ago

Anyone who knows this please help me out

leva [86]

1 unit left and reflection across x axis

5 0

3 years ago

An employee worked 36 hours last week. This week, she worked 15% less hours. How many hours did she work this week?

Lelu [443]

Answer: 30.6

Step-by-step explanation: she worked 30.6 hours be cause if you think 36 of 15% it is 30.6 hours she worked

5 0

3 years ago

Help please! this is my third time posting this!! T.T

ArbitrLikvidat [17]

Answer:

see below

Step-by-step explanation:

24 - 3 x = -27

Subtract 24 from each side

24-24 - 3 x = -27-24

-3x =-51

Divide each side by -3

-3x/-3 = -51/-3

x = 17

Check

24 -3(17) = -27

24 -51 = -27

-27 = -27

8 0

3 years ago