18 points!!!!! Help please I’ve a got a test tomorrow and I have not revised so please some one help... if you have answered it please can you stay to help the rest

 18 Points!!!!! Help Please Ive A Got A Test Tomorrow And I Have Not Revised So Please Some One Help...

Answers

Answer 1

Answer:

x = (-b±(√b²-4ac))/2a

Step-by-step explanation:

Here's a mnemonic I use to remember the quadratic formula:

The bad (negative) boy was deciding (plus or minus) whether to go to a radical (radical) party or be squared (b²) and miss out (minus) on four awesome chicks<-- don't really like that word, I use creatures lol (4ac) and the party was over at 2 AM (all over 2a).


Related Questions

In 2010, the population of a city was 168,000. From 2010 to 2015, the population grew by 8%. From 2015 to 2020, it fell by 5%. To the nearest 100 people, what was the population in 2020?

Answers

Answer:

172000

Step-by-step explanation:

Population growth from  2010 to 2015 if population increased by 8% =

1.08 x 168,000. = 181440

Population growth from  2015 to 2020 if population decreased by 5% =

0.95 x 181440 = 172,368

Rounding off to the nearest 100 people = 172,000

The population in the year 2020 is 172,368.

Calculation of the  population in 2020:

Since

In 2010, the population of a city was 168,000. From 2010 to 2015, the population grew by 8%. From 2015 to 2020, it fell by 5%.

So,

[tex]= 168000 \times 1.08 \times 0.95[/tex]

= 172,368

hence, The population in the year 2020 is 172,368.

Learn more about population here: https://brainly.com/question/13977748

I NEED HELP ASAPPPPP 6
Directions - Create a Pythagorean Theorem equation for the diagram, then solve for
the unknown side. If necessary, round to two decimal places.
X
9
Equation:
X =

Answers

Answer:

9²=6²+?²

81-36=?²

?=√45=3√5


Given that triangle LMN is
similar to triangle GJH, what is
the value of x?

Answers

Answer:

x = 53

Step-by-step explanation:

Similar means that the corresponding angles are congruent (the same) - basically what this means is that ∠L ≅ ∠G, ∠M ≅ ∠J, and ∠N ≅ ∠H.

Since we know that the angle measures in a triangle should add up to 180 and we know the measures of ∠L and ∠M already, we can do

180 =  67 + 60 + N

So, N = 180 - (67 + 60) = 180 - 127 = 53.

Since ∠N ≅ ∠H, ∠H = 53.

Is(3, 2) a solution to the system on inequalities ?Explain.

Answers

Answer:

No

Step-by-step explanation:

The solution of the system of inequalities is the intersection region of all the solutions in the system. Example 1: Solve the system of inequalities by graphing: y≤x−2y>−3x+5. First, graph the inequality y≤x−2 .

You can earn 5 coins
What is the slope of the function below?
y = 4x +4

Answers

Answer:

The slope is 4

Step-by-step explanation:

The answer is 4

Evaluate the algebraic expression by using the distributive property: 7(7x+y)

Answers

Answer:

Step-by-step explanation:

14x + 7y is the correct answer

Answer:

yo mama

Step-by-step explanation:

A movie theater sells out 7 times per month. Chloe counted 168 sellouts at the theater. How long was Chloe recording sales?
A. 7 years
B. 2 years
C. 1 year
D. 24 years

More questions will be asked in the comments

Answers

Answer:

B. 2 years

Step-by-step explanation:

use y = mx + b

y = total number of sell outs = 168

m = sell outs per month = 7

x = months

b is not needed for this

168 = 7x

divide both sides by 7

x = 24

divide 24 by 12 to get the number of years

years = 2

Answer:

the answer to this question is B. 2 years

which word describes the unit price​

Answers

the last one is right because it’s per 1 unit or in this case day

Answer:

$5.00 for 1 day

Step-by-step explanation:

1 day is a unit, so its $5.00 for 1 day.

What is m∠8 if m∠4 = 50°?

Answers

Answer:

it would also equal 50

Step-by-step explanation:

angle 4 and angle 8 are corresponding angles meaning that they are the same angle

a, they make the same angle therefore have the same measurement

The area of the circle is 40 yards find the area of the circle. Use 3.14 for π.

Answers

Answer:

Step-by-step explanation:

We know that the area of the circle is 40 yards, so the area of the circle would be 40 yards.

Answer:

5026.55

Step-by-step explanation:

A=πr2=π·402≈5026.54825

Find the area of the figure

Answers

Answer:

Step-by-step explanation:

i cant give you an exact answer but look up the formula for trapezoid and look up the formula for triangle and you will get your answer.

Answer:  Area 89m^2

Step-by-step explanation:

To find the area of the rectangle we multiply

Base * Height = Area

8 * 13 = 104

Now we find the area that isn't shaded

I inference that the base of the triangle is 5m  

5 * 6 = 30

Now divide that by 2

30/2 = 15

Subtract 15 from 104

104 - 15 = 89m^2

PLease help I'll give brainliest if correct

Answers

Answer:

It would be a quadratic function

Step-by-step explanation:

If you plot all the points, you will see that it forms a parabola, since quadratic equations will form a parabola on a coordinate plane, that would be the correct answer.

Answer:

quadratic

Step-by-step explanation:

I had this question as well it's right for plato

how does the decimal piont move whenever you rewrite a percent as a decimal and when you rewrite the decimal as a percent?

Answers

To convert a decimal to a percent move the decimal 2 places to the right. To convert a percent into a decimal just do the inverse, move the decimal 2 places to the left.

simplify the product.
[tex]10\sqrt{12x^{3} } . 2\sqrt{6x^{5} }[/tex]
full calculations please!!

Answers

Answer:

[tex]120x^4\sqrt{2}[/tex]

Step-by-step explanation:

First we need to break down the numbers in the radicals into its factors

so

12= 3*2*2

x³=x*x*x

Which means we have

[tex]10\sqrt{3*2*2*x*x*x}=20x\sqrt{3x}[/tex]

and

[tex]2\sqrt{2*3*x*x*x*x*x} =2x^{2} \sqrt{6x}[/tex]

Because the radicand (the small number that goes up top) are the same we can just mulitply the two from here

which means we have

[tex](20x*2x^2)\sqrt{3x*6x}=40x^3\sqrt{18x^2} \\\sqrt{18x^2}=\sqrt{2*3*3*x*x} =3x\sqrt{2} \\=120x^4\sqrt{2}[/tex]

Can someone help me please?!

Answers

Answer:

its three good sir

Step-by-step explanation:

If 4x-4t=-10 is a true equation, what would be the value of 4x-4y+9?

Answers

Answer:

uhh... that is impossible to know since we don't know the value 'y'

Step-by-step explanation:

we need another equation to solve this.

Please help!!!! The roots of x^2-2x-2=0 are A.1+square root of 3 B.1+square root of 12 or C.No real roots

Answers

Answer:

A

Step-by-step explanation:

We have the equation:

[tex]x^2-2x-2=0[/tex]

We can use the quadratic formula. In this case, a = 1, b = -2, and c = -2. Hence:

[tex]\displaystyle x=\frac{-(-2)\pm\sqrt{(-2)^2-4(1)(-2)}}{2(1)}[/tex]

Evaluate:

[tex]\displaystyle x=\frac{2\pm\sqrt{12}}{2}[/tex]

Simplify:

[tex]\sqrt{12}=\sqrt{4}\cdot\sqrt{3}=2\sqrt{3}[/tex]

Hence:

[tex]\displaystyle x=\frac{2\pm2\sqrt{3}}{2}[/tex]

Divide:

[tex]x=1\pm\sqrt3[/tex]

The correct answer is A.

Amy, Dan, and Mike are competing in a cooking competition. They all used different amounts of milk from a container holding 6 gallons of milk.

Amy used 13% of the total milk in the container.
Dan used 0.14 of the total milk in the container.
Mike used 0.5 gallon of the total milk in the container.
Who used the greatest amount of milk from the container? Show your work and explain your answer in words.

Answers

Answer:

Amy: 0.78 Gallons

Dan : 0.14 Gallons

Mike: 0.5 Gallons

Answer: Amy

Step-by-step explanation:

Look closely

What is the distance from P to Q?​

Answers

Answer:

B) 5 units

Step-by-step explanation:

3-(-1)²+-1-(-4)²=c²

4²+3²=c²

16+9=c²

25=c²

√25=c

5=c

If a chord of a circle is 6 and is twice as far from the center chord of length 12, how long is the radius of the circle?

Answers

Answer and explanation:

A center chord in a circle is the diameter of that circle. Therefore a center chord of a circle is different from other chords that touch two points on the circle but not in the center of the circle. A diameter of a circle is the chord that runs the length of the center of the circle touching two points at the edge of the circle. A diameter is twice the radius of the circle. So if the diameter of the circle is 12cm then the radius of the circle is 6cm

Solve for the value of d.


62°(6d + 4) ^ o

Answers

The value of d 62 + 5

PLEASE HELP ITS DUE SOIN AND I DONT KNOW HOW TO ANSWER​

Answers

Answer:

y = - 3

Step-by-step explanation:

Given the 2 equations

6x + 11y = - 3 → (1)

4x + y = = 17 → (2)

Multiplying (1) by 4 and (2) by - 6, then adding will eliminate the term in x

24x + 44y = - 12 → (3)

- 24x - 6y = - 102 → (4)

add (3) and (4) term by term to eliminate x

0 + 38y = - 114

38y = - 114 ( divide both sides by 38 )

y = - 3

I will give brainliest if you will be the first to be my friend on Nitro Type!!

The bottom says that I have $1,269,530. If I added $15,000,000 to that and then divided by 81, How much money will I have then?

Answers

Answer:

$200858.40

Step-by-step explanation:

1,269,530 + 15,000,000 = 16,269,530

16,269,530/81

= 200858.40

I'll be your friend on there sorry I probably won't be your first

Hope I helped!!

btw I LOVE Vampire Diaries

A dozen eggs cost $2.49. What is the cost per egg?

Answers

i believe the answer is 0.21 cents

Answer:

i think its $0.20

Step-by-step explanation:

 12                 1

------      =   ---------

 2.49          0.20

1 egg = $0.20

Write an algebraic expression to represent the situation.

Gabriella ran 4.7 more miles than Aaron.


(Thanks!)

Answers

Answer:

4.7>a

i think that's correct??

✓ 10
11
12
13
14
Last year, Justin opened an investment account with $7400. At the end of the year, the amount in the account had decreased by 7.5% How much is this
decrease in dollars? How much money was in his account at the end of last year?

Answers

Answer:

Decrease in dollars is $555.00, $6845.00 was in his account at the end of last year.

Step-by-step explanation:

7400 times 7.5/100

=74 times 7.5

=$555.00

7400-555=$6845.00

Someone help me it’s really hard

Answers

Answer:

The ordered pair (15, 12) means that 15 pounds of beans cost $12.

Step-by-step explanation:

(20, 16)

(x, y)

x is along the x-axis and y is along the y-axis.

x = 20 = 20 pounds of beans

y = 16 = 16 is the cost of the beans

(15, 12)

x = 15 is 15 pounds of beans

y = 12 is 12 for the cost of the beans

Answer: 15 pounds of beans costs 12 dollars

Step-by-step explanation:

if the x-axis represents the pounds of beans, then any x-coordinate will be beans.

Work out the reciprocal of 0.4

Answers

Answer:

1/0.4=10/4=5/2...............

0.4= 4/10
Reciprocal of 4/10= 10/4

You can leave the answer here
But if you want to further simplify it then:

10/4= 5/2

Answer asap plz !
How do I solve the triangles ?

Answers

Answer:

I'm so sorry I only found the area of the first triangle with the measurements 11, 10 and 17

I'll show you how to find the area

Step-by-step explanation:

The formula for a triangle is base x height divided by 1/2

For the first triangle the base is 11 and the height is 10

base(11) x height(10) = 110 then divide 110 by 1/2 = 55

so the area of the first triangle is 55.

Sorry again this is only the area of the first triangle.

Please help me. I would really appreciate it

Answers

Their is nothing in the picture, it’s all black
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