All categories

2 years ago

2x +1 = 7 -Z | -1 = [?] = 2x 3

Mathematics

1 answer:

enot [183]2 years ago

8 0

Answer: nop

Step-by-step explanation:

You might be interested in

Write a quadratic function whose zeros are -3 and -4

andreev551 [17]

Answer:

f(x) = (x -(-3))(x -(-4))

Step-by-step explanation:

The function can be written as the product of binomial terms whose values are zero at the given zeros.

(x -(-3)) is one such term

(x -(-4)) is another such term

The product of these is the desired quadratic function. In the form easiest to write, it is ...

f(x) = (x -(-3))(x -(-4))

This can be "simplified" to ...

f(x) = (x +3)(x +4) . . . . simplifying the signs

f(x) = x^2 +7x +12 . . . . multiplying it out

6 0

3 years ago

There is 30 points to whoever can figure this out

Nostrana [21]

I don’t really know….but nice computer :)

5 0

2 years ago

What percent of 200 is 40? a. 200% b. 20% c. 2%

OleMash [197]

Answer:

20%

Step-by-step explanation:

if you take 40/ 200 = 20

7 0

2 years ago

Read 2 more answers

Using Newton's Law of Cooling. You are a medical examiner called to an abandoned house in which a dead body has been discovered.

Artyom0805 [142]

A) The differential equation comes from the fact that the rate of temperature change is proportional to the difference in temperatures.
$\frac{dT}{dt} = \alpha(T -52)$

B) Find general solution by separating variables and integrating $\int\frac{dT}{T-52} = \alpha \int dt \\ ln (T-52) = \alpha t + C \\ T = C e^{\alpha t} +52$ :

C) Initial condition is t=0, T = 87
$87 = C +52 \\ C = 35$

D) Total time elapsed is 10 minutes, new temperature is 84
$84 = 35 e^{10\alpha} +52$
solve for alpha
$e^{10\alpha} =\frac{32}{35} \\ \alpha = \frac{ln(32/35)}{10} \\ \alpha = -.00896$

E) Temperature function is:
$T = 35 e^{-.00896 t} +52$
solving for t
$t = \frac{ln (\frac{T-52}{35})}{-.00896}$
Plug in T = 98.6
$t = -31.95$

This is approximately 32 minutes before he arrived or about 1:20 AM

3 0

2 years ago

1/5 +3/10= one fifth plus three tenths equals

Nina [5.8K]

1/5 + 3/10
= 2/10 + 3/10
= 5/10
= 1/2

6 0

3 years ago

Read 2 more answers