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3 years ago

What is the answer to -(5) to the power of twoPS Number 6

Mathematics

2 answers:

Kobotan [32]3 years ago

8 0

-(5) to the power of 2 = -25

1. (5) to the power of two = 25

2. slide the negative sign to the right.

Damm [24]3 years ago

6 0

Evaluate -(5)^2. Note that Order of Operations rules (PEMDAS) require that we perform exponentiation before multiplication.

Therefore, we evaluate 5^2 first, obtaining 25, and after that multiply this result by -1.

-(5)^2 = -25

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A cooler has a temperature of 32 degrees Fahrenheit. A bottled drink is placed in the cooler with an initial temperature of

FinnZ [79.3K]

Answer:

$k \approx 0.44$

Step-by-step explanation:

Given function:

$f(t) = (ce)^{-kt}+32$

As per question statement:

Initial temperature of bottle is 70 $^\circ F$ .

i.e. when time = 0 minutes, f(t) = 70 $^\circ F$

$70 = ce^{-k\times 0}+32\\\Rightarrow 38 = ce^{0}\\\Rightarrow c = 38$

After t = 3, f(t) = 42 $^\circ F$

$42 = 38 \times e^{-k\times 3}+32\\\Rightarrow 42-32 = 38 \times e^{-3k} \\\Rightarrow 10 = 38 \times e^{-3k} \\\Rightarrow e^{3k} = \dfrac{38}{10}\\\Rightarrow e^{3k} = 3.8\\\\\text{Taking } log_e \text{both the sides:}\\\\\Rightarrow log_e {e^3k} = log_e {3.8}\\\Rightarrow 3k \times log_ee=log_e {3.8} (\because log_pq^r=r \times log_pq)\\\Rightarrow 3k \times 1=log_e {3.8}\\\Rightarrow 3k = 1.34\\\Rightarrow k = \dfrac{1.34}{3}\\\Rightarrow k \approx 0.44$

Hence, the value is:

$k \approx 0.44$

8 0

3 years ago

Solve the equation. Check your solution. 3x - 2 = 16

DedPeter [7]

X=6

16 plus 2 is 18 and divided by 3 is 6

3 0

3 years ago

Read 2 more answers

I need help with this

MaRussiya [10]

Answer:

number one is 3 Step-by-step explanation:

number 2

the answer is 2

number 3

answer is 42

number 4 answer is 15

8 0

3 years ago

What is the answer for this question? 6x^2 - 35x + 49 ( factorising quadratics btw)

tino4ka555 [31]

Answer:

x=7/2 x=7/3

Step-by-step explanation:

5 0

3 years ago

F(x)=-5x+2 and g(x)=1/2x+4 find f(g(12))

skad [1K]

Answer:

- 48

Step-by-step explanation:

If you want to learn more about this concept, it's called composition of functions.

First, you plug in g(x) as if it were x into f(x).

f(g(x))= -5 (1/2x + 4) + 2

= -5/2x - 20 + 2

= -5/2x - 18

Then, plug in the value given, as x.

= -5/2 (12) - 18

= -30 - 18

= - 48

I hope this helped!

3 0

3 years ago