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Olegator [25]
4 years ago
7

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ?

Mathematics
1 answer:
Savatey [412]4 years ago
7 0

Answer:

It is D.

Step-by-step explanation:

The produce of the number and 10 is 10n.

20 percent of the number = 0.20n.

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F(x)=3x 3 inverse function
scoundrel [369]

Step-by-step explanation:

if I understand this correctly than you are looking for the inverse function of f(x) = y = 3x³.

the inverse function simply tries to calculate the original x it of the original y.

and then, to make it a formal function, we rename x to y and y to x.

y = 3x³

x³ = y/3

x =  \sqrt[3]{ \frac{y}{3} }

=> as "regular" function

y  =  {f}^{ - 1} (x)=  \sqrt[3]{ \frac{x}{3} }

4 0
3 years ago
*EASY* Solve with steps! *WILL MARK BRAINLIEST*
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Answer:

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Step-by-step explanation:

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Help me with this topic?! Special right triangles: decimal answers! Round to the nearest tenth
Alja [10]

Answer:

a=10, c=1.4

Step-by-step explanation:

so the ratio of the side with the length 5 to the side <em>a</em> is 1:2(or we could say a to 2a). Because of this we now multiply 2 to 5 to get a=10(because it is a 1 to 2 ratio).The relation between the side worth 2 and the side <em>c</em> is a√2 to a. so we divide √2 from 2 to get √2 and this number in decimal form is 1.41421356237....., so rounded to the nearest tenth is 1.4(because 1 rounds down)

8 0
3 years ago
Solve system by elimination <br> -2x-5y=13<br> 2x+5y=-3
kolbaska11 [484]

Answer:

There is no solution to this equation.

Step-by-step explanation:

We know this because when we go to eliminate a term, both terms cancel out resulting in an incorrect statement. This makes the answer no solution.

-2x - 5y = 13

2x + 5y = -3

----------------

0 = 10

4 0
4 years ago
Write an equation of the line that passes through (3,2) and is perpendicular to the line y= 1/3x-3
Westkost [7]

Answer:

y = - 3x + 11

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = \frac{1}{3} x - 3 ← is in slope- intercept form

with slope m = \frac{1}{3}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{\frac{1}{3} } = - 3, then

y = - 3x + c ← is the partial equation

To find c substitute (3, 2) into the partial equation

2 = - 9 + c ⇒ c = 2 + 9 = 11

y = - 3x + 11 ← equation of perpendicular line

6 0
3 years ago
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