please help asap!! it’s due in about 20 minutes

Answer:

x = - 2 -[tex]\sqrt{15\\[/tex]

x = - 2 + [tex]\sqrt{15[/tex]

Step-by-step explanation:

The given equation needs to be solved by completing the squares.

The required values are -2+√15, -2-√15

The given equation is [tex]x^2+4x-11=0[/tex]

The general form of a quadratic equaiton is [tex]ax^2+bx+c=0[/tex]

Comparing with the given equation we have

a = 1

b = 4

c = -11

Rearranging the equation

[tex]x^2+4x=11[/tex]

Finding (b/2)²

[tex](\dfrac{4}{2})^2=4[/tex]

Adding to both sides of the equation

[tex]x^2+4x+4=11+4\\\Rightarrow (x+2)^2=15\\\Rightarrow x+2=\pm\sqrt{15}\\\Rightarrow x=-2+\sqrt{15},-2-\sqrt{15}[/tex]

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Answer:

A) [tex]\frac{13}{20}[/tex]

Step-by-step explanation:

[tex]\frac{13}{20} = 065 = 65%[/tex]%

[tex]\frac{65}{1} = 65 = 100%[/tex]%

[tex]\frac{7}{20} = 035 = 35[/tex]%

[tex]\frac{13}{2,000} = 0.0065 = 0.0065[/tex]%

Answer:

it b

Step-by-step explanation:

a) y = (x + 2)(x + 3)  helps find the x-intercepts most efficiently.

b) y=   [tex]x^{2} +5x+6[/tex] helps find the y-intercept most efficiently

The x-intercept is the point where a line crosses the x-axis, and the y-intercept is the point where a line crosses the y-axis.

Given that:

a) y= (x+2)(x+3)

i.e., x+2= 0 , x+3 = 0

    x= -2 , x= -3

and, y =  [tex]x^{2} +5x+6[/tex]

           = (x+2)(x+3)

  x= -2 and y= -3

y = (x + 2)(x + 3) helps to find the x-intercepts most efficiently

Now,

b) y=(x+2)(x+3)

     x =0 , y = 2 x 3 =6

y=   [tex]x^{2} +5x+6[/tex]

y= 0 +05 x 0 + 6

y= 6

So, for y-intercept use  y=   [tex]x^{2} +5x+6[/tex]

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Answer:

apolynomial p has zeros

Answer:

p(x)=(x-5)(x+1)(4x+1)

3 positive 1 positive

Step-by-step explanation:

D goes 3 units right and it get to 3 Positive and then two units down gets you to 3 Positive and 1 Positive 3,1

Answer:

78

Step-by-step explanation:

im not sure but i think is 78

60+18=78

sorry

Answer:

1.35 about 6 quarters

Step-by-step explanation:

2.75-1.35=1.40

1.40/0.25=about 6

Answer:

there will be 20 nickels and 7 quarters

Answer:

0.0625

Step-by-step explanation:

because the other answer is wrong.

(and bad) :)

Answer:

Since congruent means that they have the same diameter , i'd say that the answer is 1

Step-by-step explanation:

Answer:

31 students

Step-by-step explanation:

Calculate volume of the prism

20 × 12 × 15

= 3600 in³

divide volume of prism with volume of container

3600 ÷ 400

= 9

9 times

Answer:

A

Step-by-step explanation:

a)

[tex](8(3)^{2} / 9) * 7[/tex]

8(9) / 9 = 8 x 7 = 56

b)

[tex]2(3)^{2} * 3 - 4(3)[/tex]

2(9) * 3 - 12

18 * 3 = 54 - 12 = 42

c)

[tex]4(3)^{2} - 6(3) + 12[/tex]

4(9) - 18 + 12

36 - 18 = 18 + 12 = 30

d)

[tex]7(3) + (3 * 8)[/tex]

21 + 24 = 45

Answer:

5:3

Step-by-step explanation:

a burger cost 10 and a hot dog cost 6 so the ratio is literally 10:6 if u want a simplified answer divide both numbers by 2

5:3

Answer: 3:5

Step-by-step explanation:

Answer: 47.86

Step-by-step explanation:

tan x =42/38

tan x= 1.105

x= 47.86

Answer:

[tex]Area = 192cm^2[/tex]

Step-by-step explanation:

The given information can be interpreted as:

[tex]Base = 24cm[/tex] --- lower side

[tex]Slant\ Height = 9cm[/tex] --- right side

[tex]Height = 8cm[/tex] --- dashed line

Required

Determine the area

The area of parallelogram is:

[tex]Area = Base * Height[/tex]

[tex]Area = 24cm * 8cm[/tex]

[tex]Area = 192cm^2[/tex]

Answer:

she like

Step-by-step explanation:

faygo u gettin bigger

Answer:

B and C are the correct options

The side length of the square with an area of 24 square units will be √24 units. Then the correct options are B and C.

Every one of the sides of a square is consistent. Let 'x' be the side length of the square. Then the region of the square is the square of the side length of the square.

Then the area of the square will be

Area of the square = x² square units

The expression is given below.

⇒ √24

If the area of the square is 24 square units. Then the side length is given as,

x · x = Area

x · x = 24

x² = 24

x = √24

The side length of the square with an area of 24 square units will be √24 units. Then the correct options are B and C.

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Answer:

The skier has a faster rate of speed.

Snowboarder: 15m/s

skier: 18 m/s

Step-by-step explanation:

Answer:

LM=JM

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

First u need to do the square 7 times 7 is 49 and one triangle is 70 and divide that by 2 it will equal 35 so there is 4 triangles so times that by 4 is will equal 140 and plus 49 is will equal 189

Answer:

hey

Step-by-step explanation:

option A) i.e. 189 cms

Answer:

I think you shade in 6 of the rectangles

Answer:

672 cubes because 8×6×14 equals 672 I hope it helps

Answer:

The answer is below

Step-by-step explanation:

From the image, we can see that DC is parallel to AB.

Step 1:

Alternate interior angles are angles formed at the inner corners of intersection on opposite sides of transversal when two parallel lines are intersected by a transversal.

Since Line AB is parallel to line DC and cut by transversal DB. So angles CDB and ABD are alternate interior angles and must be congruent.

Step 2:

DB ≅ BD (reflexive property of congruence)

Step 3:

∠A = ∠C = 90° (right angles, given). But to prove that both triangles are congruent, the correct step 3 is:

Since, ∠A = ∠C = 90° and angles CDB and ABD are congruent. This means that the third angles in the both triangles are also congruent. Hence, angle ADB and CBD are must be congruent.

Step 4:

BD = DB, angles CDB and ABD  are congruent, angle ADB and CBD are congruent.

Therefore,  By the Angle-Side-Angle Triangle Congruence Theorem, triangle BCD is congruent to triangle DAB .

Answer:

1200

Step-by-step explanation:

brainliest please :D

Answer:

120

Step-by-step explanation:

One hour is 90 minutes 90/15=6 then you take 20X6=120miles

Answer:

It will travel 120 miles

Step-by-step explanation:

First, convert the hour and half to minutes: 90 minutes.

Then divide 90 with 15: 6

Then since there are 6 sections of 15 minutes, you would multiply 20 times 6 which is 120.

Answer:

850 and 23

Step-by-step explanation:

Answer:

€4,378,000,000

Step-by-step explanation: just took the test :)

Answer:

A

Step-by-step explanation:

Took the test

Answer:

y=4

Step-by-step explanation:

3(9) +4y= 43

27+4y=43

4y=16

y=4

Answer:

56.52m

Step-by-step explanation:

This is because pie is commonly substitued as 3.14 and since the formula of a cicumference is piRx2 it would be 56.52

The circumference of the circle is 18π meters.

A circle is a two-dimensional figure with a radius and circumference of 2πr.

The area of a circle is πr².

We have,

The circumference of a circle can be found using the formula:

C = 2πr

where r is the circle's radius and π (pi) is a mathematical constant approximately equal to 3.14159.

Substituting r = 9 m into the formula, we get:

C = 2π × 9

C = 18π m

Therefore,

The circumference of the circle is 18π meters.

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