All categories

3 years ago

Evaluate each expression for the given value of the variable. x + 2x - x - 1; x = 2

Mathematics

2 answers:

MaRussiya [10]3 years ago

6 0

x + 2x - x - 1

Substitute 2 for x into the expression.

(2) + 2(2) - (2) - 1

Multiply 2 * 2 first.

(2) + (4) - (2) - 1

Solve from left to right.
(2 + 4) - 2 - 1 = 6 - 2 - 1

6 - 2 - 1

Solve from left to right.
(6 - 2) - 1 = 4 - 1

4 - 1 = 3

<h3>Your answer is 3.</h3>

ryzh [129]3 years ago

4 0

The Equation is

x + 2x - x - 1 = 0

The Value of x = 2 ,

Putting in Equation , we get

2 + (2 × 2) - 2 - 1 = 0

2 + 4 - 2 - 1 = 0

6 - 3 = 0

The Answer is 3

You might be interested in

56 * 65 to the 8th power in scientific notation and result

Ber [7]

The answer is 17, 844, 109, 521, 875, 000.

in scientific notation its 1.7844109521875 * 10 to the 16th power

7 0

3 years ago

Read 2 more answers

Which one applies to the triangles ?

Gnesinka [82]

Answer:

You are correct it is B

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Which equation represents the model shown

Alex787 [66]

Answer:

The answer is A.

Step-by-step explanation:

This is quite the odd question to see on homework, but looking at it a certain way helps determine the answer. two fourths are shaded in, and so is one twelfth. Since the other five twelfths are blank, it can be interpreted that the model is showing us A. This can be checked on a scientific calculator.

.5 / (1/12) = 6

Therefore, A is correct.

7 0

3 years ago

PLEASEEEEEEE HELPPPPPP ASAPPPP

GalinKa [24]

Answer:

Step-by-step explanation:

6 0

3 years ago

A 75% increase followed by a 33 1/2% decrease

o-na [289]

After 75% increase followed by a 33 1/2% decrease the net increased is 16.375%.

<u>Solution:</u>

Need to determine net percentage increase or decrease when a value is increased by 75% and then decreased by $33 \frac{1}{2} \%$ that is 33.5%.

Let’s assume initial value be represented by variable x.

$75 \% \text { decrease means } x+75 \% \text { of } x=x+\frac{75}{100} x=x+0.75 x=1.75 x$

Now there is decrease of 33.5%

$\begin{array}{l}{33.5 \% \text { decrease means } 1.75 x-33.5 \% \text { of } 1.75 x=1.75 x-\frac{33.5}{100} \times 1.75 x} \\\\ {=1.75 x-(0.335 \times 1.75) x=1.75 x-0.58625 x} \\\\ {=1.16375 x}\end{array}$

$\text { So increase in percentage }=\frac{\text { final value-initial value}}{\text { intial value }}$

$=\frac{1.16375 x-x}{x} \times 100=16.375 \%$

Hence after 75% increase followed by a $33 \frac{1}{2} \%$ decrease the net increased is 16.375%.

8 0

3 years ago