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4 years ago

I don't know how to do it

Mathematics

1 answer:

Alex4 years ago

5 0

Is it number 6 or 8 cause I'm little bit confused

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What is 5x – 9 + 2x – 4 = 9.4

Vsevolod [243]

Simplifying
5x + -9 = 38

Reorder the terms:
-9 + 5x = 38

Solving
-9 + 5x = 38

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + 9 + 5x = 38 + 9

Combine like terms: -9 + 9 = 0
0 + 5x = 38 + 9
5x = 38 + 9

Combine like terms: 38 + 9 = 47
5x = 47

Divide each side by '5'.
x = 9.4

Simplifying
x = 9.4

5 0

3 years ago

Read 2 more answers

-3x-6+(-1) please help me

Sauron [17]

Answer:

I think its -3x-7

4 0

4 years ago

Please give me the correct answer.Only answer if you're very good at math.Take your time when answering.

Nostrana [21]

Answer:

$\frac{6}{8} = \frac{y}{16}$

Step-by-step explanation:

rise = y-axis

run = x-axis

$\frac{rise of smaller trinagle}{run of smaller trinagle} = \frac{rise of larger triangle}{run of larger triangle}$

$\frac{6}{8} = \frac{y}{16}$

5 0

3 years ago

Please help with math :)

Travka [436]

ANSWER

$\boxed {f(n) = 7n - 4}$

EXPLANATION

From the table,

$a_1 = 3$

$a_2 = 10$

There is a constant difference of

$d = a_2 - a_1$

$d = 10 - 3 = 7$

The sequence is therefore an arithmetic progression.

The general formula for the arithmetic progression is

$f(n) = a_1 + (n - 1)d$

We substitute the values into the formula to obtain,

$f(n) = 3+ 7(n - 1)$

We expand the bracket to obtain,

$f(n) = 3+ 7n - 7$

This simplifies to

$f(n) =7n - 4$

7 0

3 years ago

Read 2 more answers

Help if you can! <br> Thank you!

Citrus2011 [14]

the answer would be 57 cm2

6 0

4 years ago