Solve x2−4x−12=0 by completing the square. A x=−2 B x=−6 or x=2 C x=−2 or x=6 D x=−6

Answers

Answer 1

Answer:

B x=-6

x=2

Step-by-step explanation:


Related Questions

Tran is using a coordinate plane to design a treasure hunt for his students. The hunt begins at the flagpole at the origin. The first clue is hidden 5 units north of the flagpole. The second clue is located 6 units east of the flagpole. The final clue is located 5 units south of the flagpole. Plot the locations of the flagpole and the 3 clues on the coordinate plane and show the path students will follow from the flagpole to all three clues. . Each unit represents 50 feet. What is the shortest combined distance along the path from the flagpole to Clue 1 to Clue 2 and to Clue 3?

Answers

Answer:

The shortest combined distance along the path from the flagpole to Clue 1 to Clue 2 and to Clue 3 is approximately 1,031.025 feet

Step-by-step explanation:

The given coordinates of the clues for the treasure hunt are

The location of the first clue = 5 units north of the flag pole

The coordinates is (0, 5)

The location of the second clue = 6 units east of the flag pole

The coordinates is (6, 0)

The location of the final clue = 5 units south of the flag pole

The coordinates is (0, -5)

The flagpole is at the origin

The coordinates of the flagpole is (0, 0)

Each unit on the graph = 50 feet

From the drawing of the treasure hunt created with Microsoft Excel, the shortest distances between the clues are as follows;

The shortest distance between 2 points is a straight line

Therefore

The shortest length from the flagpole to Clue 1 = 5 - 0 = 5 units

The actual distance from the flagpole to Clue 1 = 5 units × 50 feet/unit = 250 feet

The length from Clue 1 to Clue 2= √(6² + 5²) = √(61) units

The actual distance from Clue 1 to Clue 2 = √(61) units × 50 feet/unit = 50·√61 feet

By similarity, the actual distance from Clue 2 to Clue 3 = 50·√61

The combined shortest distance along the path from the flagpole to Clue 1 to Clue 2 and to Clue 3 = (250 + 50·√61 + 50·√61) feet ≈ 1,031.025 feet

pls help with this its for math pls help

Answers

Answer:

first option

Step-by-step explanation:

divide each side by 'wh' to get:

l = V/wh

TOP QUESTION^^ ILL GIVE BRAINLIEST

Answers

Answer:

Please read below:

Step-by-step explanation:

To calculate the area, you'll need πr². In this case, 3.14 * r²

If the radius is 50 feet, you'll calculate 50 * 3.14² which equals 492.98, or, B

Hope this helps :)

7. Find the area of this trapezoid. Area =
square units. Round to the nearest whole number

1: 84
2: 119
3: 240
4: 168

Answers

A=119
119 is the answer because I solved the problem and that’s what I got so I’m probably right about the answer

Answer:

2. 119

Step-by-step explanation:

need help plz.......

Answers

Answer:

oh I see. that's an interesting question but the problem is I hate maths

V 144 belongs to the set of integers.
O True
O False

Answers

Answer:

True

Step-by-step explanation:

[tex] \sqrt{144} [/tex]

is a rational number.

It is also a perfect square which means it is an integer.

Hope this Helps!

:)

Answer:

Step-by-step explanation:

True.  √144 = 12 (an integer) or 12/1, which is rational.

(a) An angle measures 30°. What is the measure of its supplement?
(b) An angle measures 26°. What is the measure of its complement?

Answers

Answer:

32 and 58.

Step-by-step explanation:

complementary angles add up to 90.

26+x=y

x+y=90

plug y=26+x into the above equation

x+26+x=90

2x=64

x=32

The angles are 32 and 58.

what is 48% of 60? This is for Algebra 1! :)

Answers

Answer:

48% of 60 is 28.8.

48% of 60 is 28.8
hope it helps

If your input is 5 what is the output?

Answers

Answer:

When the input is 5, the output is 11.

Step-by-step explanation:

Replace x with 5:  3(5) - 4 = 15 - 4 = 11

When the input is 5, the output is 11.

The input is 5 the output is 1

Determine the Equation of the line Perpendicular to 2x -3y +5= 0 and passers through (-6,-3)

Answers

9514 1404 393

Answer:

  3x +2y +24 = 0

Step-by-step explanation:

In general, the equation of a perpendicular line can be found by swapping the coefficients of x and y, then negating one of them. The value of the constant will be what is required to make the line pass through the given point.

The equation will be of the form ...

  3x +2y +c = 0

At the given point, (x, y) = (-6, -3), we have ...

  3(-6) +2(-3) +c = 0 . . . . substitute the given point coordinates

  -18 -6 +c = 0 . . .simplify

  c = 24 . . . . . . . . add 24

The general-form equation for the line is ...

  3x +2y +24 = 0 . . . . . shown in blue in the attachment

How do I solve this arithmetic sequence?

Answers

Answer:

The 16ᵗʰ term of this sequence is 82

Step-by-step explanation:

Here,

First Term = a₁ = 9

Common Difference = (d) = 2

Now, For 16ᵗʰ term, n = 16

aₙ = a + (n - 1)d

a₁₆ = 7 + (16 - 1) × 2

a₁₆ = 7 + 15 × 5

a₁₆ = 7 + 75

a₁₆ = 82

Thus, The 16ᵗʰ term of this sequence is 82

-TheUnknownScientist

Find the 7th term in the following sequence (n = 7)

f(n) = 5 + 8(n-1)

Also, for this question, state what a1 is (first term) and the common difference (a2 - a1).

Answers

Answer:

see explanation

Step-by-step explanation:

Substitute n = 7 into f(n)

f(7) = 5 + 8(7 - 1) = 5 + 8(6) = 5 + 48 = 53

f(n) = 5 + 8(n - 1) represents the nth term of an arithmetic sequence

f(n) = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

By comparison, then

a₁ = 5 and common difference d = 8


3. There are 32 students in the school play. The ratio of girls to all students
in the play is 5: 8. How many girls are in the play?
4. Two out of three vehicles in a parking lot are SUVs. There are 18 SUVs
in the parking lot. How many vehicles are in the parking lot

Answers

I believe the answers would be 20 then 27

Explanations

3- I believe the answer is 20

There are 32 students total and the ratio of girls to all of the students in the play is 5:8

So to get from 8 to 32 you need to multiply by 4, so you would go the same to the five which give you 20

The according to this, there are 20 girls in the play. And 20/32 = 62.5% as does 5/8

4- I believe the answer would be 27

As said, 2/3 of the vehicles are SUVs and that is equal to 18 SUVs.

To get what equals 1/3, you would divide 18 by two which gives you 9.

Now to get the total, you would have to multiply 9 by 3 to get all three parts which would give you 27

Please correct me if I am wrong, have a good day

What is the answer to this question?

(3+√5)^2

Answers

Answer:

the answer to this is

14 + 6√5

14 + 6√5 because foil method

(3+√5)^2 = (3+√5)(3+√5)

3(3) = 9
3(√5) = 3√5
√5(3) = 3√5
√5(√5) = 5

9 + 3√5 + 3√5 + 5
= 14 + 6√5

At an ice cream shop, three flavors are increasing in demand. Last year, banana, pumpkin, and rocky road ice cream made up 13% of total ice cream sales. This year, the same three ice creams made up 18.1% of ice cream sales. The percentage of rocky road sales doubled, the percentage of banana sales increased by 50%, and the percentage pumpkin sales increased by 20%. If the rocky road ice cream had one less percent of sales than the banana ice cream, find out the percentage of ice cream sales each individual ice cream made last year

Answers

Answer:

Banana made=3.22

Pumpkin made=7.86

Rocky road ice cream made=1.89

Step-by-step explanation:

From the question we are told that

1st year sales(banana, pumpkin, and rocky road ice cream) [tex]S_1= 13\%[/tex]

2nd year sales:[tex]S_2=18.1\%[/tex]

Rocky road sales doubled

Banana sales increased by 50%

Pumpkin sales increased by 20%

Rocky road ice cream had one less percent then banana

Let

Banana =x

Pumpkin=y

Rocky road ice cream=z

Generally the first year equation is given mathematically as

[tex]x+y+z=13......(1)[/tex]

Generally the second year equation is given mathematically as

100% increase in Rocky road ice cream sales()z i.e double

[tex]2*z=2z[/tex]

50% increase in banana ice cream sales()x

[tex]=>1*0.50=0.5\\=>0.5+1x=1.5x[/tex]

20% increase in pumpkin(y)

[tex]=>1*0.20=0.2\\=>0.2+1x=1.2y[/tex]

Therefore second year equation is given as

[tex]1.5x+1.27y+2z=18.1.....(2)[/tex]

Generally where rocky road ice cream had one less percent of sales than the banana ice cream the equation is given as

[tex]1.5x-2z=1........(3)[/tex]

Therefore combining the three equations

x+y+z=13

1.5x+1.27y+2z=18.1

1.5x-2z=1

matrix form

[tex]\begin {bmatrix}1 & 1& 1 & 13\\1.5 & 1.2 & 2 & 18.1\\1.5 & 0 & -2 & 1\end{bmatrix}[/tex]

Generally the determinant of the first three columns

[tex]\triangle=1.8[/tex]

Solving with Crammers Rule by solving Determinant when;

Column 4 replace column 1

[tex]\triangle_1=5.8[/tex]

Column 4 replace column 2

[tex]\triangle_2=14.15[/tex]

Column 4 replace column 3

[tex]\triangle_3=3.4[/tex]

Therefore x is given my

[tex]x=\frac{\triangle_1}{\triangle}[/tex]

[tex]x=\frac{5.8}{1.8}[/tex]

[tex]x=3.22[/tex]

Therefore y is given my

[tex]y=\frac{\triangle_2}{\triangle}[/tex]

[tex]y=\frac{14.15}{1.8}[/tex]

[tex]y=7.86[/tex]

Therefore z is given my

[tex]z=\frac{\triangle_3}{\triangle}[/tex]

[tex]z=\frac{3.4}{1.8}[/tex]

[tex]z=1.89[/tex]

Therefore

Banana made=3.22

Pumpkin made=7.86

Rocky road ice cream made=1.89

Find the surface area of the pyramid.

Answers

Answer:

129.6

Step-by-step explanation:

A= 1/2 bh

=7.8 x 9 x 1/2

= 35.1

A= 1/2 bh

=7x 9 x 1/2

= 31.5

31.5 x 3

= 94.5

Add

35.1 + 94.5 = 129.6

I begin with a three-digit positive integer. I divide it by 9 and then subtract 9 from the answer. My final answer is also a three-digit integer. How many different positive integers could I have begun with?

Answers

Answer:

4

Step-by-step explanation:

Answer:3

Step-by-step explanation:

Find the greatest common factor of 4c3 and 6m2.

Answers

Answer:

The GCF is 2

Step-by-step explanation:

Here, we want to find the greatest common factors of the two terms

We have the terms written in terms of the products of their multiples as follows;

4c^3 = 2 * 2 * c * c* c

6m^2 = 2 * 3 * m * m

As we can see, the greatest common factor of the two is simple the value 2

How much money will there be in an account at the end of 10 years if $3000 is deposited at 3% interest compounded
semi-annually? (Assume no withdrawals are made. Use the formula A=P
-p(1-4)
for compound interest,

Answers

Answer:

$4040.57

Step-by-step explanation:

A=P(1+(r/n))^nt

P = Principal = 3000

r = rate = 0.03

n = no. times payed each year = 2

t = years = 10

A = 3000(1 + (0.03/2))^(2x10)

A = 3000(1.015)^20

A = 4040.57 (2.d.p)

Hope this helped!

The difference between 3 1/2 and 1 4/6 is _____.

A. 1 4/5
B. 2 4/5
C. 2 7/10
D. 1 7/10

Answers

Answer:

1 5/6.

Step-by-step explanation:

3 1/2 - 1 4/6

= 3 1/2 - 1 4/6

= 7/2 - 10/6        The LCM of 2 and 6 is 6 so:

= 21/6 - 10/6

= 11/6

= 1  5/6.

How does Momma act differently when she is with her mother in Alabama compared to how she acts at home in Flint? plz i will gave brainest

Answers

Answer:Watson act differently when she is with her mother in Alabama compared with how she acts at home in Flint? Mrs. Watson acts calm in front of her Mother. In Flint, Mrs.

Step-by-step explanation:

What is a correct name for the angle shown? R S T O LE O ZS O LEITE O LEFT​

Answers

Answer:

RTS.

Step-by-step explanation:

This is an obtuse angle.

Help please anyone? ASAP!!! GIVING 15 POINTS FOR RIGHT ANSWER PLEASE

Answers

Answer:

=1.283 , 0.779 seconds

Step-by-step explanation:

h=2+33t-16t²

when h=18 ft

then18=2+33t-16t²

→ 16t²−33t+16=0  

t= [−(−33)±√{(−33) ²−4×16×16)}]/(2×16)

= [33±√{1089−1024}]/(32)

= [33±√{65}]/(32)

=1.283 , 0.779 seconds

What the first person said

A rocket is launched from a tower. The height of the rocket, y in feet, is
related to the time after launch, x in seconds, by the given equation.
Using this equation, find out the time at which the rocket will reach its
max, to the nearest 100th of a second.

y = 16x^2+ 238x + 81

Answers

We need the max height as well

Answer: 7.44

Step-by-step explanation: DeltaMath

Six friends attend a music concert and spend $27 per ticket. They each purchase a souvenir t-shirt. If the friends spend a total of $231, how much does each souvenir t-shirt cost

Answers

Answer:

11.50

Step-by-step explanation:

6x27=162

231+-162=69

69 divided by 6 is 11.5

11.5=11.50

11.50 is your answer

Answer:

$11.50.

Step-by-step explanation:

If there are 6 friends, and every ticket costs $27, then we need to multiply.

6 x 27 = 162.

Then, we subtract the cost of the tickets so we can find the total cost of the souvenir t-shirts.

231 - 162 = 69.

Since each of the 6 friends bought a souvenir t-shirt, we divide the total cost by the number of people.

[tex]\frac{69}{6}[/tex] = 11.5.

So, each t-shirt costs $11.50.

Erica's bill for breakfast at a restaurant was $64. She left an 18% tip. What was the amount of the tip?

Answers

Answer:

$11.52

Step-by-step explanation:

18% of 64 is 11.52

Suppose three moons A, B, and C orbit 100,000 kilometers above the surface of a planet. Suppose m ZABC = 90°, and the planet is 20,000 kilometers in diameter. Draw a diagram of the situation. How far is moon A from moon C?​

Answers

Answer:

Step-by-step explanation:

Please see diagram attached.

Moon A and C are 100,000km + 10,000 = 110,000km from center of planet.

So they are 110,000 + 110,000 = 220,000km apart.

Answer:

Step-by-step explanation:

AC is 220000km according to the drawing:

Find the value of x. X=​

Answers

Answer: x=9

Step-by-step explanation:

24/36=6/x

24/36=2/3

2*3=6

3*3=9

Answer:

x= 12

Step-by-step explanation:

What is the sign of 37+(-37)

Answers

Answer:

0

Step-by-step explanation:

it is neither positive nor negative.

if it helps don't forget to like and mark me

Which is the equation in slope-intercept form for the line that passes through (-1,5) and is parallel to 3x + 2y = 4?
Answer asap please

Answers

Answer:

3.24

Step-by-step explanation:

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