what's the first step of solving -x^2-4x+16=0 ??? NOW!

Answers

Answer 1

Answer:

Step-by-step explanation:

Use the Quadratic Formula.

-x² - 4x + 16 = 0

x = [4±√(4²-4(-1)(16)]/[2(-1)] = [4±√80]/(-2) = [4±4√5]/(-2) = -2±2√5


Related Questions

Solve for x.
X -8 = -11

PLZ I NEED ANSWER ASAP

Answers

move -8 to the other side n it becomes positive
x=-11+8
x=-3

Answer:

i had this text by ms putz u prob know her she ur teacher that answer is -3 because if you subtract -8 from -11  you will get -3

Step-by-step explanation:

What transformation rule would represent a shift of 3 units to the left 4 units down?
Group of answer choices

(x,y) –> (x – 4, y – 3)

(x,y) –> (x – 3, y – 4)

(x,y) –> (4x, 3y)

(x,y) –> (x + 3, y + 4)

Answers

Given:

Shift of 3 units to the left 4 units down.

To find:

The transformation rule.

Solution:

The rule of transformation is

[tex](x,y)\to (x+a,y+b)[/tex]          ...(i)

Here, a<0 if the figure shifts a units left and a>0 if the figure shifts a units right.

Similarly, b<0 if the figure shifts b units down and b>0 if the figure shifts b units up.

If a transformation represents shift of 3 units to the left 4 units down, then a=-3 and b=-4.

Putting a=-3 and b=-4 (i), we get

[tex](x,y)\to (x+(-3),y+(-4))[/tex]

[tex](x,y)\to (x-3,y-4)[/tex]

Therefore, the correct option is B.

Help ASAP ASAP

Help asappp

Answers

Answer:

-3.9

Step-by-step explanation:

y/0.3 - 1.4= -14.4
•0.3. •0.3
y-1.4= -4.32
+1.4= +1.4
y= -2.92

2. The sides of a triangle are in the ratio 3:7:10 and the perimeter is 80 inches.
What are the lengths of the sides of the triangle?

Can anyone help please ?​

Answers

Step-by-step explanation:

3+7+10=20

80/20=4

1 ratio =4

3(4) : 7(4) : 10(4)

= 12 : 28 : 40

Write down in figures the number forty one thousand and ninety six.

Answers

Answer:

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Step-by-step explanation:

Answer:

41,096

Hope it helps

Please mark me as the brainliest

Thank you

Please hurry! Will be choosing brainliest!
In the cone below, the radius is 6 meters and the height is 8 meters.
Find the volume of the cylinder pictured below. Use 3.14 for pi. Give your answer

Answers

Answer:

301.59

Step-by-step explanation:

301.59 yw have a good day

Suppose that you live in a community that has 125,000 households. Among these households, 50,000 have traditional landline telephones while the remaining 75,000 only use cellular and / or VOIP telephones. We are going to select 100 households from your community at random without replacement. The first household selected does not have a traditional landline telephone. What is the probability that the second household selected will have a traditional landline telephone

Answers

Answer:

0.4 = 40% probability that the second household selected will have a traditional landline telephone

Step-by-step explanation:

A probability is given by the number of desired outcomes divided by the number of total outcomes.

We have that:

125,000 households

50,000 have traditional landlines telephones.

The first household selected does not have a traditional landline telephone.

Now we have 125000 - 1 = 124,999 households, and 50,000 have traditional landlines telephones.

What is the probability that the second household selected will have a traditional landline telephone

[tex]p = \frac{50000}{124999} = 0.4[/tex]

0.4 = 40% probability that the second household selected will have a traditional landline telephone

Which expression represents the product of x^3+2x-1 andx^4-x^3+3

Answers

Answer: x^4 + 2x + 2

Step-by-step explanation:

I just took the test. :)

Answer: x^4 + 2x + 2

Step-by-step explanation:

Big brain

please help me its due later today

Answers

Answer:

y

___

2

1

-2

-1

in that order, hope this helps :)

Answer:

a) y=2

b) y=1

c) y= -1

d) y= -2

Step-by-step explanation:

The number of dogs at the shelter is a two digit, odd number. It is more than 80. The tens digit is less than the ones digit. The sum of the digits is 17. How many dogs are at the shelter?

Answers

Answer:

89

Step-by-step explanation: the sum of both numbers are 17/ 9+8=17.

89 is greater than 80

Answer:

89

Step-by-step explanation:

89 is greater than 80

8 is less than 9

8 + 9 = 17

It meets all the requirements

Please solve
(2x^2 +x+4) (x+7) = 6x^3+29x^2+47x+28
with explanation
ASAP!!!
On a time crunch!!!!!

Answers

Answer: x = 0

Step-by-step explanation:

Subtract 6x^3+29x^2+47x+28 from both sides:

(2^2 + x + 4) (x - 7) - 6x^3+29x^2+47x+28

(6x^3+29x^2+47x+28)-6x^3+29x^2+47x+28

= -4x^3 - 14x^2 - 36x = 0

Now factor the left side:

-4x^3 - 14x^2 - 36x = 0

(-2x) (2x^2 + 7x + 18) = 0

Now set the factors equal to 0

-2x = 0 or 2x^2 + 7x + 18 = 0

x = 0

Please help, I have been stuck for a while, it is about trig.

Answers

Answer: x=28, y=14

Step-by-step explanation:

This article gives the formula for finding the sides of a 30-60-90 triangle. https://blog.collegevine.com/complete-guide-30-60-90-triangle/

The gist of it is that the hypotenuse is 1, the short side is 2, and the long side is root3. Since there was a 14 with the root3, I multiplied the 1 and 2 for the other sides by 14 to get 28 and 14.

Tell whether the angles are adjacent or vertical. Then find the value of x . 117° xº ​

Answers

Answer:

please give the picture

Step-by-step explanation:

I will then solve this

please help me on this

Answers

9514 1404 393

Answer:

  10 ft

Step-by-step explanation:

The midsegment length is the average of the other two lengths.

  (QR +PS)/2 = TU

  QR +PS = 2×TU . . . . . . . . . . . . . . . multiply by 2

  QR = 2×TU -PS = 2(14 ft) -18 ft . . . subtract PS; substitute given values

  QR = 10 ft

Which one is the answer I think it’s four or five

Answers

Answer:

The answer is 4 (B)

Step-by-step explanation:

Hope this Helped

It is four shoes long

A parallelogram has an area of 37.72 m² and a height of 4.6 m.

How long is the base of the parallelogram?

Enter your answer as a decimal in the box

Answers

Answer:

8.2

Step-by-step explanation:

area=b*h

37.72=b*4.7

b=37.72/4.7

=8.2

Answer:

Step-by-step explanation:

Area of parallelogram= base×perpendicular height

37.72m²=base×4.6m

base= 37.72m²/4.6m²

base= 8.2m

HELP PLSS I DONT WANNA FAIL

Answers

Answer: 1/2 and 3/6

Explanation: 1/2 is equal to 3/6 because if you divide both 3 and 6 by 2 it’s 1/2

Not sure about 4

A group of five students have a mean test score of "34.2." Another student has a score of 50. What is the mean average of all "six" students?

Answers

Answer:

The mean average of all "six" students is 36.83.

Step-by-step explanation:

Mean:

The mean is the sum of all scores divided by the number of scores.

A group of five students have a mean test score of "34.2." Another student has a score of 50.

This means that the sum is given by:

[tex]S = 5*34.2 + 50 = 171 + 50 = 221[/tex]

What is the mean average of all "six" students?

Sum of 6 students is 221. So

[tex]M = \frac{221}{6} = 36.83[/tex]

The mean average of all "six" students is 36.83.

Round 1526.04 to the nearest tenths

Answers

1526.00

This is because the 4 is not atleast or greater than five, therefore it rounds down.

Solve for x:
X х+ 9 = 5x — 11

Answers

Answer:

5

Step-by-step explanation:

   x+9-(5*x-11)=0

  -4x + 20  =   -4 • (x - 5)

  -4   =  0

x-5 = 0

Add  5  to both sides of the equation :

                     x = 5

For a cat that weighs 15 pounds, rank the following scale weights from least
accurate to most accurate.
15.10 pounds
13.9 pounds
16.2 pounds
15.01 pounds

Answers

Answer:

16.2 pounds (least accurate)

13.9 pounds (2nd least accurate)

15.10 pounds (2nd most accurate)

15.01 pounds (most accurate)

Step-by-step explanation:

I hope this helps :)

Answer:

16.2 pounds

13.9 pounds

15.10 pounds

15.01 pounds

HELP OR I EAT YOUR COOKIES (5TH GRADE MATH)
Lamont's empty backpack weighs 2 1/2 pounds. He puts 4 notebooks in it that each weigh 15 ounces. How many pounds does Lamont's backpack weigh now?

Answers

The answer is 6.252 pounds.

2 1/2 as a decimal is 2.5, and 15 ounces is equal to 0.938 pounds. Since there are 4 notebooks, you multiply 0.938 by 4, which is 3.752. Now, you just add 2.5+3.752=6.252

Solve the system of equations using the elimination method and enter the value of y
4x - 5y = -9
- 4x + y = -7

Answers

Answer:

y = 4; x = 11/4

Step-by-step explanation:

4x - 5y = -9

-4x + y = -7

Add the two equations to eliminate x:

-4y = -16

-4y/-4 = -16/-4

y = 4

Plug in y for x

4x - 5y = -9

4x - 5(4) = -9

4x - 20 = -9

4x = -9 + 20

4x = 11

4x/4 = 11/4

x = 11/4

Answer from Gauthmath

Please help

Look at picture and match

Answers

Answer:

It is the same order

Step-by-step explanation:

A=1/2bh triangle

A=bh parallelogram

A=1/2(b1 + b2)h trapezium

Answer:

Step-by-step explanation:

A=1/2bh =triangle

A=bh= parallelogram.

A=1/2(b1-b2)h=trapezoid.

What is the answer to the angle BD?

Answers

straight angle. this is easyyy

pencils cost 2 dollars each. Rulers cost 3 dollars each. Edith buys p pencils and r rulers. The total cost is T dollars. What is the formula for T in terms of p and r​

Answers

(2 x p) + (3x r ) = T that would be the equation

which pairs of expressions are equivalent to one another? Mark all that apply.
-10 - (-7) and -10 + (-7)
7 + (-16) and 16 - 7
11 - 5 and 11 + (-5)
7 - 13 and 13 - 7
-20 - (-45) and -20 + 45
9 + 8 and 9 - (-8

Answers

Answer:

11 - 5 and 11 + (-5)

-20 - (-45) and -20 + 45

9 + 8 and 9 - (-8

Step-by-step explanation:

Two negatives make a positive so -- and + are the same

3. The measure of an interior angle of a regular polygon is 140. Find the number of sides the polygon has.​

Answers

Answer:

I hope this will help u

Step-by-step explanation:

Each interior angle of a regular polygon = 140 deg. So each exterior angle of the regular polygon = 180-140 = 40 deg. Hence the regular polygon has 360/40 = 9 sides.

Please mark me as Brilliant

9 sides


Jdncnsckjskcndjxmjdjdjsjdnsn

b) A first-time house buyer can make 240 monthly payments of £675 to repay the mortgage. How many monthly payments are required if she can pay £600 per month?

Answers

she would need 270 payments

need help pleaseeee !!!

Answers

Answer:

A (0,8)

B (1,4)

C (2,2)

D (3,1)

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