All categories

3 years ago

Solve by completing the square ( need it asap pls) x2+18x+81=-4 -don’t send link-

Mathematics

1 answer:

Sholpan [36]3 years ago

6 0

Answer:

x=2.17

Step-by-step explanation:

$x^2$ +18x+81=-4

-81 -81

$x^2$ +18x= -85

/18 /18

$x^2$ = -4.7

$\sqrt{x^2}$ = $\sqrt{-4.7}$

x= 2.17

I hope this helps :) (if it does, brainliest, please??)

You might be interested in

Help me please i need to do 3 months of hw in 2 hours help me please

Scrat [10]

3 months of homework, w t h have u been doinggg

6 0

3 years ago

Read 2 more answers

Factor out the GCF: 16x + 48

valentinak56 [21]

Answer: 16(x + 3)

Step-by-step explanation: When you're asked to a polynomial, the first thing you want to look for is the greatest common factor between the terms that are involved.

So what is the greatest common factor of 16x and 48?

The greatest common factor of 16x and 48 is 16 because

it's the largest number that divides evenly into 16 and 48.

The x does not qualify because it must appear in every term

to qualify for the GCF but here, it only appears in one term.

So a 16 factors out leaving us with each term divided by it

inside a set of parentheses so w eget 16(x + 3).

Notice that if we distributed the 16 through both terms,

we would end up with our original polynomial.

7 0

3 years ago

If SDE ~ SWT, find WT.

faust18 [17]

Formula used: 40+x = 4x-3 x is used for ET

Step-by-step explanation:

40+x = 4x-3

+3 +3

43+x = 4x

-x -x

43 = 3x

3 3

14.3 = x

then substitude this on 5x+3 on WT and you arr good

5 0

3 years ago

An insurance adjuster processes the claims of six policy holders in an eight hour work day. The adjuster uses $5 in gasoline and

Bad White [126]

Answer:

Step-by-step explanation:

Labor productivity is is measured per hours.

Hence, the work he does [amount of claims] will be distributed amongst the amount of hours he works. The amount of dollar he uses doesn't matter for labor productivity.

Thus, his work is 6 claims. He does that is 8 hours. So claim/hr is:

6/8 = 0.75 claims per hour

Answer choice D is right.

6 0

4 years ago

If one term of a proportion is not known, what can be used to find the value of that term? a. substitution c. cross-multiplicati

Elza [17]

Hint: Selecting "AUTO" in the variable box will make the calculator automatically solve for the first variable it sees. Quick-Start Guide. The calculator uses cross multiplication to convert proportionsinto equations which are then solved using ordinary equation solving methods. Be sure to enter something in each input box ...

5 0

3 years ago