3 years ago

Given the equation a/b=c/d , what is the value of d. Show your solution

Mathematics

1 answer:

sasho [114]3 years ago

8 0

D would equal a/b times c

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Firdavs [7]

Download Socratic it will help you!

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3 years ago

How can you show that two objects are proportional with a table?

vredina [299]

So this is our table:

-----------------
x-values | a b c d e f |
-----------------
y-values | g h i j k l |
-----------------

You can know that the values in the table are proportional if:

$\frac{a}{g}=\frac{b}{h} =\frac{c}{i}=\frac{d}{j}=\frac{e}{k}=\frac{f}{l}$

Hope that helps :)

5 0

3 years ago

What is the solution to the system of equations?

motikmotik

Answer:

a. it has no solution

b. you can only substitute by making either the 'x' or 'y' the subject of either of the two equations.

Step-by-step explanation:

3x - 9y = -13.............. eqn 1

x - 3y = -7................... eqn 2

from eqn 2

x - 3y = -7, substitute by making 'x' the subject

x = -7 + 3y.................. eqn 3

put eqn 3 into eqn 1

3x - 9y = -13

3( -7 + 3y) - 9y = -13

-21 + 9y - 9y = -13

9y - 9y = -13 + 21

0 = 8, which is not possible.

4 0

3 years ago

Sin x = cos<br><br>I do not understand trig

frez [133]

Answer:

tanx = 1

Step-by-step explanation:

I assume you mean sinx = cosx

In this case we have to recognize that tanx = sinx / cosx

So if we divide cosx over we can get tanx

So:

Cosx divided by itself gives us 1

sinx / cosx = 1

tanx = 1

3 0

3 years ago

FAST ANSWERS ONLY PLEASE HELP

Gemiola [76]

D is your answer. OK

7 0

3 years ago

Read 2 more answers