50 point question. Please help my math grade is way to low

[tex]\sf \longmapsto \: 4x {}^{2} - 9y {}^{2} [/tex]

[tex]\sf \longmapsto(2x+3y)(2x−3y)[/tex]

[tex] \boxed{\sf (2x+3y)(2x−3y)}[/tex]

Answer:

Choice D

Step-by-step explanation:

Factorise: 4x²-9y²

We can obtain the factorization by this identity:

Rewrite the given expression as:

Let (2x)² be a and (3y)² be b according to the identity.

So applying the identity:

Choice D is accurate.

Answer:

4 lipsticks

Step-by-step explanation:

15+15=30, 30+30=60

Answer:

m∠ABC = 40°

Step-by-step explanation:

(4x - 4)° = 2(x + 9)°

4x - 2x = 18 + 4

2x = 22

x = 11

m∠ABC = (4(11) - 4)° = 40°

Answer:

1:2

Step-by-step explanation:

1:2 would be a equivilant

also most simplified

Answer:

1 :2

Step-by-step explanation:

Step-by-step explanation:

[tex] {x}^{6} - 9 = { ({x}^{3} })^{2} - {3}^{2} [/tex]

Answer:

(x^3)^2-3^2 , or b.

and its the diffrence of suqares.

Step-by-step explanation:

Answer:

A: 0.3

B: 0.3

Step-by-step explanation:

Basically both answers are the same

Answer:

Step-by-step explanation:

1) The sun, the moon, windows, drawings, this: . And much more…

2) For example, how far you have to walk around a track, how big the moon is, how much ribbon you need to wrap around a circle present…

Step-by-step explanation:

the mix follows the ratio 2/3 (cups of cocoa to sugar).

2 × x = 6 cups

x = 6/2 = 3

so, the cocoa cups number is multiplied by the factor 3, and we need to multiply also the sugar cup number with the same factor to keep the ratio value unchanged :

so, we need 3×3 = 9 cups of sugar.

Answer:

x= 60.4

Step-by-step explanation:

y = 60.4

z= 29.6

x= 60.4

By complementary angle rule

Answer:

Find the "=0" points

in between the "=0" points, are intervals that are either

greater than zero (>0), or

less than zero (<0)

then pick a test value to find out which it is (>0 or <0)

Answer:

795$

Step-by-step explanation:

750 x 0.06 = 45

750 + 45 = 795

Answer:

Roopa: 10

Amita: 14

Step-by-step explanation:

5x+7x=24

12x=24

x=2

5x=10

7x=14

Answer:

Step-by-step explanation:

5/7*24

=5/7*24

=17.14 apples

Answer:

See below for answer

Step-by-step explanation:

Domain is the x-value in the ordered pair    

Range is the y- value in the ordered pair

1.  D = {3, 2, 1, 0}      R = {-5, -4, -3, -2}

2.  D = {-2, 0, 2, 4}   R = {1, 2, 4, 6}

3.  D = {10, 8, 6, 4}   R = {-1, 2, 5, 8}

4.  D = {-5, -3, -1, 1}   R = {-5, -3, -1, 1}

5.  D = {-4, -1, 2, 3}   R = {4, 0, 4, 6}

Answer:

[tex]\huge\boxed{E)-\frac{100}{17}}[/tex]

Step-by-step explanation:

The multiplicative inverse of the fraction [tex]\frac{a}{b}[/tex]  is simply [tex]\frac{b}{a}[/tex].  The sign would not change for this reason.

Hope it helps :) and let me know if you want me to elaborate.

Answer:

d

Step-by-step explanation:

Answer:

$12.72

Step-by-step explanation:

0.75*24=18 dollars-5.28=12.72 dollars

Answer:

13

Step-by-step explanation:

two angles are congrunet

The measurement of angle I in the given triangle HIJ is 83.5°.

Given is a triangle HIJ, where HI ≅ JH, and m ∠J = 13°, we need to find m ∠I.

Since HI ≅ JH (given) and ∠J = 13° (given), then ∠HJI ≅ ∠HIJ (by the isosceles triangle property).

In an isosceles triangle, the angles opposite the congruent sides are also congruent. Therefore, ∠HJI = ∠HIJ.

Now, let's denote ∠I as x (which is what we're trying to find). Since ∠HJI = ∠HIJ, we can set up an equation:

x + 13° + x = 180° (sum of angles in a triangle)

Solving for x:

2x + 13° = 180°

2x = 180° - 13°

2x = 167°

x = 167° / 2

x = 83.5°

So, m ∠I is 83.5°.

Learn more about isosceles triangle click;

https://brainly.com/question/28412104

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Complete question is given below:

In △HIJ, HI ≅ JH and m∠J = 13°. Find m ∠I.

Answer:

Shama types at a constant rate she types 12 letters in 4 seconds what is the constant of proportionality for the relationship of letters to minutes

Answer choices

3

48

180

2,880

Help I need this answer fast I’m taking a test and I can’t fail 7th grade

Step-by-step explanation:

Shama types at a constant rate she types 12 letters in 4 seconds what is the constant of proportionality for the relationship of letters to minutes

Answer choices

3

48

180

2,880

Help I need this answer fast I’m taking a test and I can’t fail 7th grade

The constant of proportionality for the relationship of letters to minutes is 180.

Two set of quantities are said to be directly proportional or just simply proportional if the corresponding elements of these two sets has a constant ratio. This constant is called the proportionality constant or coefficient of proportionality.

We have the proportional relationship between letters typing and the time in minutes taken to type the letters.

Time taken by Shama to type 12 letters = 4 seconds

                                                                  = 4 / 60 minutes

                                                                  = 1/15 minutes

Proportionality constant can be found by taking the ratio of these quantities.

That is, proportionality constant = 12 / (1/15)

The fraction in the denominator will be taken to the numerator as the reciprocal and the operation changes into multiplication.

Proportionality constant = 12 × (15/1) = 180

Hence the proportionality constant for the relationship of the quantities letters and minutes is 180.

To learn more about Proportionality, click :

https://brainly.com/question/29126727

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Answer: 75

Step-by-step explanation:

Answer:

500 - 425 and that id 75 so Tamara has spent 425 dollars

Answer:

180 adults, 164 children

Step-by-step explanation:

Assuming all the people admitted are children,

total fees collected

= 344($3.50)

= $1204

Difference in amount collected

= $1870 -$1204

= $666

This difference in amount is due to the extra cost from each adult admission fee that we assumed to be children.

Difference in each admission fee

= $7.20 -$3.50

= $3.70

Number of adults admitted

= $666 ÷$3.70

= 180

Number of children admitted

= 344 -180

= 164

Answer:

the answer is C trust me by

1:2 and 14:26 are not equivalent!

Answer:

~7.61 births/minute

Step-by-step explanation:

Answer:

Step-by-step explanation:

y - x means the the difference in the number of women compared with men.

So if there are 20 women and 14 men, y - x = 20 -1 4 = 6 ,  that is 6 more women than men.

If there are more men than women then y - x will have a negative value,  and there will be, if we flip the above numbers. 6 more men than women.

Answer:

w=7.1

Step-by-step explanation:

Answer:

w=7.1

Alternate form

w= [tex]\frac{71}{10}[/tex] ,  w= 7[tex]\frac{1}{10}[/tex]

Using a system of equations, it is found that the simplified equation is y = 6x - 5.

Last year, Ada was x - 1 years old and Bill was y - 1 years old.

Bill was 6 times as old as Ada, hence:

[tex]y - 1 = 6(x - 1)[/tex]

[tex]y - 1 = 6x - 6[/tex]

[tex]y = 6x - 6 + 1[/tex]

[tex]y = 6x - 5[/tex]

The simplified equation is y = 6x - 5.

For a similar problem, also involving a system of equations, you can check https://brainly.com/question/13773803

Answer:

y=3x-1

Step-by-step explanation:

The y-intercept is at -1 if you go down 3 left 1, and then down 3 left 1 again and you are left at (0,-1)

Answer:

The answer is 25.1 degrees.

Answer:

[tex]\sqrt{2.56}[/tex]

[tex]6.828...[/tex]

[tex]1.75[/tex]

[tex]14/3[/tex]

[tex]-40[/tex]

Step-by-step explanation:

A rational number is any number that can be expressed as a ratio.

Answer:

P=6

Step-by-step explanation:

okay so the problem states that this pentagon has one line of symmetry.

if you know that AE=4x, AB=2x+1, and Bc=x+2, then you know that CD=x+2, and DE=2x+1.

since you know the perimeter is 18 cm, you can make an equation to find x:

4x+2(2x+1)+2(x+2)=18

-->4x+4x+2+2x+4=18

-->10x+6=18

-->10x=12

-->x=1.2

P would be 6

Answer:

Step-by-step explanation:

If we do not have any numbers de can think that x and y are any number

y is 100%

x is ?%

? = 100x / y

The percent that is x of y is 100x/y