3 years ago

Can someone help me

Mathematics

1 answer:

horrorfan [7]3 years ago

5 0

Im pretty sure number 15 is D

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1/2 (?/10) + 1/2 (?/10) = ? - Reduced answer = ? Help Me Please ;-;

sashaice [31]

One half of something plus another half of something is equal to the thing
1/2x +1/2x = x
The reduced answer would be ?/10

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3 years ago

In the figure the diagonals of a rhombus ABCD intersect at O . If <ADC = 120°, OC = 3cm and OD = 4cm , find

Sunny_sXe [5.5K]

Answer:

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3 years ago

Let f(x)=3x-6. Is f one-to-one? If it is find f^-1, if not explain why.

beks73 [17]

Answer: Yes, $\bold{f^{-1}(x)=\dfrac{x+6}{3}}$

<u>Step-by-step explanation:</u>

f(x) = 3x - 6 is a line so it is a function because

it passes the vertical line test

and the horizontal line test

To find the inverse, swap the x's and y's and solve for y

$y=3x-6\\\\\\\text{Swap the x's and y's:}\qquad x=3y-6\\\\\text{Add 6 to both sides:}\qquad x+6=3y\\\\\text{Divide both sides by 3:}\qquad \dfrac{x+6}{3}=y$

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3 years ago

Please help me i need this right now!! Also if you can please add attachment of your work but if not that is totally oK

Readme [11.4K]

Answer: 10^2

Step-by-step explanation:

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3 years ago

The number of boys and girls in a school are in the ratio 5: 7. What is

agasfer [191]

Answer:

There are 1,680 Girls

Step-by-step explanation:

1 ratio = 240

5 ratio = 1,200

7 ratio = 1,680

Therefore, 5:7 = 1,200 : 1,680

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3 years ago