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3 years ago

3x + 4 = 5x - 12; x = 8 true or false?

Mathematics

2 answers:

Elodia [21]3 years ago

8 0

Answer: False

Step-by-step explanation:

3x + 4 =5x - 12

step1: get x by it self

you would get; 4 = 2x - 12

step2; make zero-pairs

you would get; 2x - 8

lastly; 8÷2=4x

Natalija [7]3 years ago

7 0

Answer:

True.

Step-by-step explanation:

To find out if the statement is true, just plug in 8 each time you see x.

3(8)+ 4 = 28

5(8) - 12 = 28

This proves the statement is true, x = 8.

I hope this helps. If you have any more questions, please feel free to post them and someone will be able to help you, whether it's myself or others. Please leave a like, rating, and if possible, Brainliest. Have a great day!

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Pls help me with the inverse operation of this problem. Best answer gets brainliest

timurjin [86]

Answer:

x=7

Step-by-step explanation:

I believe we are solving for x. In that case, let us start by moving 1 to the other side.

$\frac{4(x+3)}{5} = 8$

Now, we want to get rid of that denominator of 5. Let us multiply both sides by 5:

$4(x+3)=40$

Now, we may divide both sides by 4 to get rid of the coefficiant:

$x+3=10$

When we subtract both sides by 3, we get

x=7

I hope this helps! :)

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Which symbol creates a true sentence when x equals 2? 6 • 8 – 2x _____ 6(5 + x) < > = ?

34kurt

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3 years ago

Read 2 more answers

What is (f-g)(x)? f(x)=x^4-x^2+9 g(x)=x^3+3x^2+12

sweet-ann [11.9K]

X^4 - x^2 + 9 - (x^3 + 3x^2 + 12) =

x^4 - x^3 - 4x^2 - 3

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3 years ago

Find the face value of the 20-year zero-coupon bond at 4.4%, compounded semiannually, with a price of $8,375.

umka21 [38]

Given:

Time,

t = 20 years

Rate,

r = 4.4%

Price

= $8,375

Now,

The yield will be:

= $\frac{4.4}{2}$

= $1.1$ (%)

Time will be:

= $20\times 2$

= $40 \ periods$

As we know the formula,

⇒ $Price \ of \ bond = \frac{Face \ value}{(1+\frac{r}{2} )^{n\times 2}}$

By substituting the values, we get

$8375=\frac{Face \ value}{(1+\frac{0.044}{2} )^{20\times 2}}$

$8375=\frac{Face \ value}{(1.022)^{40}}$

$8375=\frac{Face \ value}{2.3880083}$

The face value will be:

$Face \ value = 2.3880083\times 8375$

$=20,000$ ($)

Learn more about face value here:

brainly.com/question/14862802

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3 years ago