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lidiya [134]
2 years ago
12

What does the variable r represent in the equation 10r+4=8

Mathematics
1 answer:
Kryger [21]2 years ago
3 0

Answer:

The value of variable r in the equation 10r+4=8 is \mathbf{r=0.4}

Step-by-step explanation:

We need to find the value of variable r in the equation 10r+4=8

Step 1: Write the equation

10r+4=8

Step 2: Subtract 4 on both sides

10r+4-4=8-4\\10r=4

Step 3: Divide both sides by 4

\frac{10r}{10}=\frac{4}{10}\\r=0.4

So, The value of variable r in the equation 10r+4=8 is \mathbf{r=0.4}

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Answer:

99

Step-by-step explanation:

1₦ = 100 k

₦9.90 =?

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990/10=99

4 0
2 years ago
I need some help with this calculus 1 question.
Cerrena [4.2K]

Answer:

(a) f'(1)=-4

(b) y+4x-4=0

Step-by-step explanation:

<u>Tangent Line of a Function</u>

Given f(x) a real differentiable function in x=a, the slope of the tangent line of the function in x=a is given by f'(x=a). Where f' is the first derivative of f.

We are given

y=x-x^5

The derivative is

y'=1-5x^4

(a) The slope of the tangent line at (1,0) is

f'(1)=1-5\cdot 1^4=-4

f'(1)=-4

(b) The equation of the tangent line can be found with the general formula of the line:

y-y_o=m(x-x_o)

Where m is the slope and the point (xo,yo) belongs to the line. We have m=-4, xo=1, yo=0, thus

y-0=-4(x-1)

Or, equivalently

y+4x-4=0

3 0
3 years ago
I need help again please
babymother [125]
There are 8 pints in a gallon. It will take 10 days to drink 1 5-gallon container.
30 / 10 = 3
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3 years ago
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Find the measure for angle
I am Lyosha [343]

Answer:

add both of those up and see what you get

Step-by-step explanation:

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3 years ago
4^6 • 4^-8 pls answer
Alex777 [14]

Answer:

\boxed{4^{-2}}

Step-by-step explanation:

4^6 \times 4^{-8}

When bases are same for exponents and it is multiplication, then add the exponents.

4^{6+-8}

4^{-2}

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3 years ago
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