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2 years ago

Write an equivalant expression for 5x +24 + 3x

Mathematics

2 answers:

Veseljchak [2.6K]2 years ago

7 0

Combine Like Terms

5x + 3x = 8x

8x + 24

Answer: 8x + 24

Tema [17]2 years ago

6 0

8x+24
Is the anwser
To your queston

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Find the value of x² - x+1 when x=√3 -1, in the form a+b√3 where a and b are integers

lidiya [134]

Answer:

$6-3\sqrt{3}$

If you compare this to $a+b\sqrt{3}$ , then $a=6$ and $b=-3$ .

Step-by-step explanation:

We are given $x=\sqrt{3}-1$ and we are asked to find the value of $x^2-x+1$ .

So we will need to find $x^2$ .

$x=\sqrt{3}-1$

Square both sides:

$x^2=(\sqrt{3}-1)^2$

Expand using identity: $(x-a)^2=x^2-2ax+a^2$ .

$x^2=(\sqrt{3})^2-2(\sqrt{3})(1)+1^2$

$x^2=3-2\sqrt{3}+1$

$x^2=4-2\sqrt{3}$

Let's go back to the full $x^2-x+1$ .

$x^2-x+1$

$(4-2\sqrt{3})-(\sqrt{3}-1)+1$

$4-2\sqrt{3}-\sqrt{3}+1+1$

$6-3\sqrt{3}$

If you compare this to $a+b\sqrt{3}$ , then $a=6$ and $b=-3$ .

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3 years ago

Find the Value of X (angles)

STatiana [176]

Answer:

x= 55

Step-by-step explanation:

The two angles add to 180 degrees since they form a straight line

2x+70 =180

Subtract 70 from each side

2x+70-70=180-70

2x= 110

Divide by 2

2x/2 = 110/2

x= 55

7 0

3 years ago

Read 2 more answers

What is the measurement 345.067 mg rounded to four significant digits?

Viktor [21]

<span>count four from the first digit to the fourth one. When you see the fourth one, look at the digit after. if it is 5+ then the fourth digit increases by one. if 5- then it stays the same. 6>5 so 0 becomes 1.

Therefore the answer is 345.1mg</span>

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2 years ago

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12a^3b^2c

Advocard [28]

Answer:

b. the degree is 3

Step-by-step explanation:

degree is the highest exponent

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3 years ago

Can you answer this please

sertanlavr [38]

Answer:

Hi, there your answer is y=3x+4

Step-by-step explanation:

I did rise over run

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2 years ago