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hjlf
3 years ago
14

Which value of x makes the equation 2 + 8 = 15 true?

Mathematics
2 answers:
defon3 years ago
8 0

Answer:

x = 3 \frac{1}{2}

Step-by-step explanation:

there's no x in the equation you wrote.

Did you mean?

2x + 8 = 15

Subtract 8 from both sides

2x = 7

Divide both sides by 2

x = 7/2

x = 3 \frac{1}{2}

jeka57 [31]3 years ago
4 0

Answer:

5

Step-by-step explanation:

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Differentiating Exponential functions In Exercise,find the derivative of the function. See Example 2 and 3.
Citrus2011 [14]

Answer:

f'(x)=-5ae^{ax}=a f(x), where a be a constant.

Step-by-step explanation:

Note: The given functions is a constant function because variable term is missing.

Consider the given function is

f(x)=-5e^{ax}

where a be a constant.

We need to find the derivative of the function.

Differentiate with respect to x.

f'(x)=\dfrac{d}{dx}(-5e^{ax})

f'(x)=-5\dfrac{d}{dx}(e^{ax})

f'(x)=-5e^{ax}\dfrac{d}{dx}(ax)            [\because \dfrac{d}{dx}(e^x)=e^x]

f'(x)=-5ae^{ax}

f'(x)=a(-5e^{ax})

f'(x)=a f(x)

Therefore, the derivative of the function is f'(x)=-5ae^{ax}=a f(x).

7 0
3 years ago
Solve the equation 7 − 2x = 19.
Karolina [17]

Answer:

-6

Step-by-step explanation:

firstly arrange whole equation,

-2x+7=19

Now, Transpose 7 to RHS (right hand side)

-2x=19-7

-2x=12

Further, seperate coefficient -2 from x

and transpose it to RHS and divide them

x=12/-2

Hence, x= -6

8 0
3 years ago
Sophie read a total of 4 books in 2 months. Then, she read 10 books in 5 months. What is the constant of proportionality?
tatiyna

Answer:

The COP is 2.

Step-by-step explanation:

Do 4 divided 2 which is 2 and then do 10 divided by 5 to also get 2.

6 0
3 years ago
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MakcuM [25]

Answer:

a=25

Step-by-step explanation:

6 0
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D) 69 is the answer. Have an Awesome day!!!!
5 0
3 years ago
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