Help I will give crown and brainiest

Answer:

D and E would be your answers

Step-by-step explanation:

hope this helps

The solutions for the given quadratic equation are:4/5 and 1/2.

The quadratic function can represent a quadratic equation in the Standard form: ax²+bx+c=0 where: a, b and c are your respective coefficients. In the quadratic function the coefficient "a" must be different than zero (a≠0) and the degree of the function must be equal to 2.

For solving a quadratic function you should find the discriminant:[tex]D=b^2-4ac[/tex]  . And after that you should apply the discriminant in the formula: [tex]x_{1,\:2}=\frac{-b\pm \sqrt{D}}{2a}[/tex].

For the given question, you have:

a=20

b=-26

c=8

[tex]D=b^2-4ac=\left(-26\right)^2-4\cdot \:20\cdot \:8=676-640=36[/tex]

[tex]x_{1,\:2}=\frac{-b\pm \sqrt{D}}{2a}\\ \\ x_{1,\:2}=\frac{-(-26)\pm \sqrt{36}}{2*20}\\ \\ x_{1,\:2}=\frac{\left26\right\pm \:6}{40}[/tex]

Then,

[tex]x_1=\frac{\left(26\right)+6}{40}=\frac{32}{40}=\frac{4}{5}[/tex]

[tex]x_2=\frac{\left26\right-6}{40}=\frac{20}{40}=\frac{1}{2}[/tex]

Read more about the quadratic function here:

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Answer:

He needs 7.5 yards  of fabric to sell at the craft fair

Step-by-step explanation:

This is unitary method and we can calculate the value of any number of items if we are given one.

1 pillow= 3/4 yards

10 pillows= 3/4 *10

10 pillows= 15/2

10 pillows=  7.5 yards

or another way is convert 3/4 directly into decimal

3/4= 0.75

1 pillow= 0.75 yards

10 pillows= 0.75 *10

10 pillows=  7.5 yards

He needs 7.5 yards  of fabric to sell at the craft fair

Answer: The Gusty and Howling wind

Step-by-step explanation: It the best choices out all them because the other choices would not fit the sentence correctly.

Answer:

I believe that the error is that sqrt(-2) should be equal to sqrt(2) * i

Step-by-step explanation:

The rest of the steps all use proper algebraic rules, but the square root of a*b = sqrt(a)*sqrt(b)

Answer:

[tex]a \\ area = 10 \times 10 \times 3.14 = 314 \\ circumference = 2 \times 10 \times 3.14 = 62.8 \\ \\ b \\ \: area = 6 \times 6 \times 3.14 = 113.04\\ circumference = 2 \times \times 6 \times 3.14 = 37.68[/tex]

Answer:

A

Step-by-step explanation:

I guessed also I just took the exam

Answer:

combination; number of ways = 28

Step-by-step explanation:

nCr = (8,2) =28

Using proportions, it is found that the temperature after 4 hours was of 0º.

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

The temperature rose 3º every hour, for 4 hours, hence the total rise was of:

R = 3º x 4 = 12º.

Considering the initial temperature, the the temperature after 4 hours was of:

T = -12º + 12º = 0º.

More can be learned about proportions at https://brainly.com/question/24372153

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Answer:

 5.6666666666667                              

Step-by-step explanation:

             if you don't believe me plug it in yourself http://www.alcula.com/calculators/statistics/mean-absolute-deviation/

Answer:

163.91m

Step-by-step explanation:

Given data

Velocity= 44.3m/s

TIme= 3.7 seconds

We know that

Speed= distance/time

distance= speed * time

distance= 44.3* 3.7

distance= 163.91m

Hence the ball will travel 163.91m

Answer:

If Points J, K, and L are distinct points, and JK = KL then the following option  it must be true

A. J, K, and L are coplanar.

B. J, K, and L are collinear.

C. K is the midpoint of JL.

D. JK = KL

Step-by-step explanation:

If Points J, K, and L are distinct points, and JK = KL then it implies that  J, K, and L are collinear if they are collinear they must fall on same plane thus J, K, and L are coplanar and also as it is given that JK = KL which point us towards the possibility of K being the midpoint of JL .

Thus all statement except E will follows.

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Answer:  352(x)=1800

Step-by-step explanation:

Answer:

90 degrees

Step-by-step explanation:

Answer:

17.5

Step-by-step explanation:

don't know why 17.5 isn't one of the answer choices but it's right

Answer:

[tex]\sqrt{10}[/tex]/10

Step-by-step explanation:

cos is adjacent side/hypotenuse

you need to find the hypotenuse

Let h = length of hypotenuse

[tex]6^{2} + 18^{2} = h^{2}[/tex]

[tex]h^{2}[/tex] = 36 + 324 = 360

h = [tex]\sqrt{360}[/tex] = 6[tex]\sqrt{10}[/tex]

cos (theta) = 6/6[tex]\sqrt{10}[/tex] = 1/[tex]\sqrt{10}[/tex] = [tex]\sqrt{10}[/tex]/10

Answer:

40m

Step-by-step explanation:

we use the rule of trapezium by the formula A=½(a+b)h as shown in the picture above.

Answer:

Option "A" is the correct answer.

Number of truck and car in parking is 64 , 80

Step-by-step explanation:

Given:

Sample ratio = 4 truck and 5 car

Find:

Number of truck and car in parking

Computation:

Sample ratio = 4 / 5

So,

Option 1

64 truck 80 cars

ratio = 64 / 80

ratio = 4 / 5

Option 2

72 truck 73 cars

ratio = 72 / 73

84 trucks 100 cars

ratio = 84 / 100

ratio = 21 / 25

96 truck 110

ratio = 96 / 110

ratio = 48 / 55

sample ratio match with option 1

So,

Number of truck and car in parking is 64 , 80

Answer:

x = 12

Step-by-step explanation:

This is a supplementary angle so the right side is equal to 90°. This means the other side must also equal 90°

So subtract 20° from 90° and you get 70°

Next you can just (6(12)-2) or continuously substitute until you get the right answer.

Answer  8

Step-by-step explanation    

Answer:

its 27

Step-by-step explanation:

give brainliest plz

Answer:

Because people fight over the best deals that the store would have to offer... hell with it i chose violence when there were 3 black shirts just because i run a designer company.

Step-by-step explanation:

Answer:

D) -22

Step-by-step explanation:

We can find the answer by substituting all possibilities into the equation:

(8) + 11 = 19 (NOT = LESS THAN -5)

(-14) + 11 = -3 (NOT = LESS THAN -5)

(-16) + 11 = -4 (NOT = LESS THAN -5)

(-22) + 11 = -11 (This is the only subsititution that makes the expression correct)

Answer:

D. -22

Step-by-step explanation:

8 makes the inequality wrong

-14 is not enough to make it less so that's wrong

-16 makes it equal    -5>-16+11 ---> -5>-5 so not true

-22 is the only one that makes it true.

-5 > -22 +11 ---->  -5 > -11 so its true

Answer:

700ft³

Step-by-step explanation:

We have to multiply 20 x 7 x 10 = 1400 and we have to divide by 2 because the volume of a triangle is * L x W x H /2* so 1400/2= 700

:DDDD

Answer:

Solution given:

perpendicular distance =height [p]=40m

base or horizontal distance [b]=198m

Hypotenuse or zip line [h]=?

Now

By using Pythagoras law

h²=p²+b²

h²=40²+198²

h=√40804

h=202m

So the Zip line is 202m long.

Answer:

Step-by-step explanation:

Answer:multiplicando de 2 en dos hasta llegar a 40

Step-by-step explanation:

-6,-4-2,0,2,4,6,8,10,

Answer:

Uhh which one? I don't see an attachment or anything

Answer:

Ok ill help but please give me a lot of credit since i took the time to do it for you!

13 x 3 = 39, 39 x 2 = 78

9 x 3 = 27, 27 x 2 = 54

9 x 13 = 117, 117 x 2 = 234

234  + 78 + 54 = 366 mm

20 x 6 = 120, 120 x 2 = 240

4 x 20 = 80, 80 x 2 = 160

6 x 4 = 24, 24 x 2 = 48

240 + 160 + 48 = 448 cm

5 x 14 = 70, 70 x 2 = 140

5 x 16 = 80, 80 x 2 = 160

14 x 16 = 224 , 224  x 2 = 448

448 + 160 + 140 = 748 m

4 x 14 = 56, 56 x 2 = 112

17 x 4 = 68, 68 x 2 = 136

14 x 17 = 238, 238 x 2 = 476

476 + 112 + 136 = 724 ft

4 x 13 = 52, 52 x 2 = 104

13 x 19 = 247, 247 x 2 = 494

19 x 4 = 76, 76 x 2 = 152

104 + 494 + 152 = 750 in

14 x 9 = 126, 126 x 2 = 252

9 x 3 = 27, 27 x 2 = 54

3 x 14 = 42, 42 x 2 = 84

252 + 54 + 84 = 390 mm

7 x 12 = 84, 84 x 2 = 168

12 x 2 = 24, 24 x 2 = 48

2 x 7 = 14, 14 x 2 = 28

168 + 48 + 28 = 244 cm

6 x 4 = 24, 24 x 2 = 48

6 x 13 = 78, 78 x 2 = 156

4 x 13 = 52, 52 x 2 = 104

48 + 156 + 104 = 308 in

8 x 15 = 120, 120 x 2 = 240

4 x 15 = 60, 60 x 2 = 120

8 x 4 = 32, 32 x 2 = 64

240 + 120 + 64 = 424 ft

Please try to do 10 by yourself, thank you. Brainliest please.

Answer:

1) Sin 36= a/25

a=25 sin 36

a= 14.69

Cos 36= b/25

b= 25 Cos 36

b= 20.23

----------------------

2) Sin 43= y/25

y= 25 sin43

y= 17.05

Cos 43= x/25

x= 25Cos 43

x= 18.28

----------------------

3) s= 42.58

  r= 177/Cos 20

  r= 124.51

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hope it helps...

have a great day!!