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3 years ago

Witch expression is equivalent to 2.8k - 8.4?

Mathematics

2 answers:

Ede4ka [16]3 years ago

6 0

Answer:

It can not be c or d because you can't combine unlike factors. It is not a because 0.07 * 4K is not 2.8K

slavikrds [6]3 years ago

4 0

The correct answer is B

We can simply solve to see if it is correct.

Apply the distributive property.

.7*4k-.7*12

2.8k-8.4

This matches the example given in the question.

Hope this helps!

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Step-by-step explanation : eso es porque es los primeros numeros sumados que te dan -5 y la multiplicacion -1 $x^{2} + 6x + 5$

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3 years ago

How many solutions does the system of equations below have?<br> 2x – 3y = -9<br> 4х – бу = -18

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Step-by-step explanation:

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4 years ago

Pentagon DEFGH is translated 4 units to the right to create pentagon UVXYZ. DE is 5cm long. What is the length of UV?

creativ13 [48]

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5=5

5 0

4 years ago

<img src="https://tex.z-dn.net/?f=2x%20%2B%20%5Cfrac%7B5%7D%7B8%7D%20%3D%203x%20-%20%5Cfrac%7B5%7D%7B8%7D" id="TexFormula1" titl

Whitepunk [10]

Answer:

$x=\frac{5}{4}$

Step-by-step explanation:

$2x+\frac{5}{8}=3x-\frac{5}{8}$

Subtract 5/8 from both sides:-

$2x+\frac{5}{8}-\frac{5}{8}=3x-\frac{5}{8}-\frac{5}{8}$

$2x+\frac{5}{8}-\frac{5}{8}$

Add like terms:-

$\frac{5}{8}-\frac{5}{8}=0$

$=2x$

$3x-\frac{5}{8}-\frac{5}{8}$

Rule:- $\frac{a}{c} \pm \frac{b}{c}=\frac{a \pm b}{c}$

$\frac{-5-5}{8}$

Subtract, $-5-5=-10$

$=\frac{-10}{8}$

Cancel common factor: 2

$=-\frac{5}{4}$

$=3x-\frac{5}{4}$

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

$2x=3x-\frac{5}{4}$

Now, subtract 3x from both sides:-

$2x-3x=3x-\frac{5}{4}-3x$

$-x=-\frac{5}{4}$

Divide both sides by -1:-

$\frac{-x}{-1}=\frac{-\frac{5}{4}}{-1}$

$x=\frac{5}{4}$

<u>OAmalOHopeO</u>

4 0

3 years ago

Read 2 more answers