I need help this problem

Answer:

Answer:

15% off 212.5

30% off 175$

Step-by-step explanation:

15+15=30 so

250/100=2.5

2.5x30=75

250-75

Before doing the question, let's recall the quadratic formula which is used to find the roots of a quadratic equation ;

For any quadratic equation of the form ax² + bx + c = 0 , it's roots are given by the quadratic formula as :

Where , D = b² - 4ac (Discriminant)

Now , simplifying the equation :

[tex]{:\implies \quad \sf -3\{(x)^{2}+2^{2}-2\times 2\times x\}+17=0\quad \qquad \{\because (a-b)^{2}=a^{2}+b^{2}-2ab\}}[/tex]

[tex]{:\implies \quad \sf -3(x^{2}+4-4x)+17=0}[/tex]

[tex]{:\implies \quad \sf -3x^{2}-12+12x+17=0}[/tex]

[tex]{:\implies \quad \sf -3x^{2}+12x+5=0}[/tex]

Dividing both sides by -1 will yield :

[tex]{:\implies \quad \sf 3x^{2}-12x-5=0}[/tex]

Now , it's in the form of the standard quadratic equation , where a = 3 , b = -12 , c = 5 , and D = (-12)² - 4 × 3 × -5 = 144+60 = 204

Now, By quadratic Formula ;

[tex]{:\implies \quad \sf x=\dfrac{-(-12)\pm \sqrt{204}}{2\times 3}}[/tex]

[tex]{:\implies \quad \sf x=\dfrac{12\pm 2\sqrt{51}}{2\times 3}}[/tex]

[tex]{:\implies \quad \sf x=\dfrac{\cancel{2}(6\pm \sqrt{51})}{\cancel{2}\times 3}}[/tex]

[tex]{:\implies \quad \bf \therefore \quad \underline{\underline{x=\dfrac{6\pm \sqrt{51}}{3}}}}[/tex]

Answer: A

Step-by-step explanation:

The triangles are similar by AA. Angles BPA and CPD are congruent because they are vertical angles, and angles ABP and CDP are congruent because all right angles are congruent.

A translation followed by a reflection

Answer:

Step-by-step explanation:

B = 180 - 50 - 35 = 115 degrees

By the law of sines,

[tex]c=\frac{13\sin 35^{\circ}}{\sin 115^{\crc}}[/tex]

And [tex]a=\frac{13\sin 50^{\circ}}{\sin 115^{\circ}}[/tex]

Answer:

B=95 a= 10 c= 7.5

Answer:

Step-by-step explanation:

The area of the larger rectangle is (4)(5)=20.

The area of the top left right triangle is (1/2)(2)(5)=5.

The area of the top right right triangle is (1/2)(2)(1)=1.

The area of the bottom right triangle is (1/2)(4)(4)=8.

So A = 20 - 5 - 1 - 8 = 15 - 9 = 6.

Answer:

Step-by-step explanation:

area=π r²

=π×15²

=225 π cm²

»f(x) = (9 + 2x)²

»f(2) = (9 + 2(2))²

»f(2) = (9 + 4)²

»f(2) = 13²

»f(2) = 169✅

[tex]\\ \rm\hookrightarrow f(x)=(9+2x)^2[/tex]

f(2):-

put 2 inplace of x

[tex]\\ \rm\hookrightarrow (9+2(2))^2[/tex]

[tex]\\ \rm\hookrightarrow (9+4)^2[/tex]

[tex]\\ \rm\hookrightarrow 13^2[/tex]

[tex]\\ \rm\hookrightarrow 169[/tex]

Answer:The slope is 2 .

Step-by-step explanation: mark branlest if right!

Answer:

1/2

Step-by-step explanation:

In the attachment below

This is equivalent to 13 kilojoules.

=======================================================

Work Shown:

m = 65 kg = mass

v = 20 m/s = velocity

KE = kinetic energy

KE = (1/2)*m*v^2

KE = (1/2)*65*(20)^2

KE = 13000 joules

This can be written as 13 kilojoules since "kilo" means "1 thousand"

The abbreviation of the unit "joules" is the letter J.

Answer:

-7

Step-by-step explanation:

-9x-3=60

add 3 to each side to cancel -3

-9x-3+3=60+3

simplify

-9x=63

divide by -9 to cancel the -9

-9x/-9=63/-9

simplify

x=-7

Answer:

N=20

Step-by-step explanation:

Answer:

3(4+5)

Step-by-step explanation:

just fill in the numbers for x and y

Answer:

3(x + y)

x = 4 y = 5

3(4 + 5)

12 + 15

= 27

Step-by-step explanation:

Answer:

1.  -5 and -8

2. -7 and -4

3. -15 and -1

4. 7 and -2

5. -5 and 1

6. 2 and -5

7. -8 and 9

8. 5 and -4

Step-by-step explanation:

Answer:

D . (486 – 9 + 6) + (33 × 2)

Step-by-step explanation:

Which expression is equivalent to 486 – 9 + 6 + 33 × 2?

486 – 9 + 6 + 33 × 2

486 – 9 + 6 + 66

477 + 6 + 66

549

D . (486 – 9 + 6) + (33 × 2)

      477 + 6 + 66

               549

Hope this helps!

.......62% is the greatest......

Step-by-step explanation:

Area=Length ×Width

so take 625×235=

which is..

146875 square cm

Answer:

2 • (g - 2) • (4g + 3)

Step-by-step explanation:

Step by Step Solution

More Icon

STEP

1

:

Equation at the end of step 1

(23g2 - 10g) - 12

STEP

2

:

STEP

3

:

Pulling out like terms

3.1 Pull out like factors :

8g2 - 10g - 12 = 2 • (4g2 - 5g - 6)

Trying to factor by splitting the middle term

3.2 Factoring 4g2 - 5g - 6

The first term is, 4g2 its coefficient is 4 .

The middle term is, -5g its coefficient is -5 .

The last term, "the constant", is -6

Step-1 : Multiply the coefficient of the first term by the constant 4 • -6 = -24

Step-2 : Find two factors of -24 whose sum equals the coefficient of the middle term, which is -5 .

-24 + 1 = -23

-12 + 2 = -10

-8 + 3 = -5 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -8 and 3

4g2 - 8g + 3g - 6

Step-4 : Add up the first 2 terms, pulling out like factors :

4g • (g-2)

Add up the last 2 terms, pulling out common factors :

3 • (g-2)

Step-5 : Add up the four terms of step 4 :

(4g+3) • (g-2)

Which is the desired factorization

Final result :

2 • (g - 2) • (4g + 3)

Answer:

Step-by-step explanation:

1. (A) 96:38, 38:96, 96/38

(B) The two ratios are the same as they represent the same thing just reversed

2(A) 38:46

(B)  The simplest form means that you must simplify it and you get 19: 23

3 (A) For every 1 documentary movie there is 2 comedy movie

(B)For every3 kid movie, there is 4 horror movie

hope that helps, sorry for the simplified answers as I am in a bit of a rush too

Answer:

$28.89

Step-by-step explanation:

[tex]398.5\times7.25[/tex]%

Calculate
[tex]398.5\times0.0725[/tex]

Calculate the product or quotient

[tex]28.89125[/tex]

I hope this helps you

:)

Answer:

(view picture)

Step-by-step explanation:

i got this from the answer section after getting it wrong the first time it’ll show the answer

Answer:

B

Step-by-step explanation:

Simply choose an x coordinate and plug it into the equations from the choices given.

i.e. where x=1

y=2(1)^2 - 4(1)

y= 2-4

y= -2

it can then be seen that where x=1 on the graph, y= -2 aligns perfectly

Answer:

B

Step-by-step explanation:

In y = 2x^2-4x, we put y = 0 to represent the intersection points on the x-axis of the graph. (Since y = 0 is always on the x-axis)

For 2x^2-4x = 0, using the quadratic formula, we get x = 0 and x = 2.

This matches the int. points on the graph.

Answer:

The results are the opposite sign of x1 and x2.

[tex]lenght \: = (x - 8) \: and \: width \: = (x - 9)[/tex]

Step-by-step explanation:

[tex] {x}^{2} - 17x + 72 = 0[/tex]

[tex]Δ = {(17)}^{2} - 4(1 \times 72)[/tex]

[tex]Δ = 289 - 288 = 1[/tex]

[tex]x1 \: and \: x2 = \frac{17± \sqrt{1}}{2} [/tex]

[tex]x1 = \frac{17 + 1}{2} = 9[/tex]

[tex]x2 = \frac{17 - 1}{2} = 8[/tex]

»f(x) = (x + 2)²

»f(5) = (5 + 2)²

»f(5) = 7²

»f(5) = 49✅

~Hello! I will try to help you!

•Given : -

•To Find : -

•Step-by-step explanation : -

[tex] \Rightarrow \sf f(x) = {x}^{2} + 4x + 4[/tex]

»Just substitute the value 5 into the function f(x) above, then:-

[tex] \Rightarrow \sf f(5) = {5}^{2} + 4(5) + 4 \\ \Rightarrow \sf f(5) = 25 + 20 + 4 \\ \Rightarrow \sf f(5) = \bf49[/tex]

With this it's done!