help meeee pleaseeeeee

Answer:

a.  FALSE

b.  FALSE

c.  FALSE

d.  TRUE

Step-by-step explanation:

Statement a.

2 (3 - 4 y) = 6 - 4 y

use distributive property on the left:

6 - 8 y    which is NOT 6 - 4 y  then, FALSE statement

Statement b.

3 + 5 (9 + 2 n) = 48 + 5 n

apply distributive property on the left:

3 + 45 + 10 n = 48 + 10 n  which is NOT 48 + 5 n  then , FALSE statement

Statement c.

9 - 3 (y - 2) = 3 - 3 y

apply distributive property on the left:

9 - 3 y + 6 = 15 - 3 y   which is NOT 3 - 3 y  then, FALSE statement

Statement d.

3 (6 x - 2) - 7 = 18 x - 13

apply distributive property on the left:

18 x - 6 - 7 = 18 x - 13  which IS the same as 18 x - 13  then , TRUE statement

Answer:

The last option.

Answer:

[tex]\frac{x^{2}-100 }{x^{2}+2x-120 }+\frac{6x+60}{x-2}\\\\\\=\frac{(x-10)(x+10)}{(x-10)(x+12)}+\frac{6x+60}{x-2}\\\\=\frac{x+10}{x+12}+\frac{6(x+10)}{x-2}\\\\=(x+10(\frac{1}{x+12}+\frac{6}{x-2})\\\\=(x+10)(\frac{x-2+6x+6.12}{(x+12)(x-2)})\\\\=(x+10)(\frac{7x+70}{(x+12)(x-2)})\\=\frac{7(x+10)^{2} }{(x+12)(x-2)}[/tex]

It's the simplest form I can make

Step-by-step explanation:

Answer: x=7, y=2

Step-by-step explanation:

1. -2(-2x+7y=-7) -> 4x-14y=14

2. 4x-14y=14

   -5x+14y=-7

3. -x = 7, x=7

4. -5(7)+14y=-7

5. -35+14y=-7

6. 14y=28, y=2

Answer: [tex]x=-7[/tex], [tex]y=-3[/tex]

Step-by-step explanation:

[tex]\left \{ {-2x+7y=-7} \atop {-5x+14y=-7} \right.[/tex]

multiply 2 at [tex]-2x+7y=-7[/tex]

[tex]-4x+14y=-14[/tex]

subtract [tex]-4x+14y=-14[/tex] and [tex]-5x+14y=-7[/tex]

[tex]x=-7[/tex]

put [tex]x=-7[/tex] at [tex]-2x+7y=-7[/tex]

[tex]7y=-21, y=-3[/tex]

Answer:

7.9835

Step-by-step explanation:

Given that :

Mean snowfall per storm (µ) = 4.2 inches standard deviation (s) = 2.3 inches

Only the top 5% of storm should result in school being canceled :

Cut off snowfall for school to be canceled '

P(Z ≥ 5%) ; p(Z ≥ 0.05) = 1.645

Using the z relation :

Z = (x - m) / s

1.645 = (x - 4.2) /2.3

x - 4.2 = 2.3 * 1.645

x - 4.2 = 3.7835

x = 3.7835 + 4.2

x = 7.9835

Cut off snowfall for school to be canceled 7.9835

Answer:

hopes this photo helps

Answer: 37 8/15 or 37.53

Step-by-step explanation:

use math_way its amazing for math problems, if i could give a rating it would definitely get 5 stars.

its a website and a app i believe it can be used for ios and android

aka apple and everything else

btw i had to add that (_) <that in the name because it wont let me say it normally

Answer:

If you turn it or flip it over or move it it is essentially the same shape. If you try to stretch the paper or fold it you change what the shape is so it is not a rigid motion. Since the two circles are not the same size then it is not a rigid motion

Answer:

The width is 87 cm

Step-by-step explanation:

The area of a rectangle is given by

A = l*w

8613 = 99 * w

Divide each side by 99

8613 / 99 = 99 w /99

87 = w

The width is 87 cm

Answer:

Step-by-step explanation:

Given

The area of a rectangular painting=8613 cm^2

Length of painting=99cm

Solution

Area of the rectangular painting=8613

Length×width=8613

99×width=8613

Width=8613/99

Width =87cm

Answer:

x=5

y=1

Step-by-step explanation:

First, put  x=2y+3 inside 2x, which is the top equation. This will come out as 2(2y+3)-3y=7.

If you distribute, it would become 4y-6-3y=7. Then you have to combine like terms to get y+6=7

Add 6 on both sides to get y=1.

Put the value of y, which is 1 into the top or bottom equation. I would prefer the bottom equation because it is simpler. The equation would come out as

x=2(1)+3

x=2+3

x=5

Answer:

The answer will be listed below.

Step-by-step explanation:

Since there is an x= 2y+3, you can plug that equation into x in the equation 2x-3y=7. You must find y first.

2(2y+3)-3y=7

Now distribute 2 and you will get 4y+6-3y=7.

Combine 4y and -3y and have an equation of y+6=7.

Subtract 6 to both sides and you will have an answer of y=1

Now since you found y, now find x. To find x, substitue y=1 into any equation listed (you'll get the same answer anyways). Let's use x=2y+3 as an example. Substitute the 1 for y.

x=2(1)+3

Now you have x=2+3, which is 5.

x=5 and y=1.

To make sure this is correct, plug both the numbers into an equation, let's use the first one now.

2(5)-3(1)=7

7=7

In the end, the euqtaion equals 7, which means the answer is correct.

Answer:i think its b im not sure tho

Step-by-step explanation:

Answer: The answer is A) x= -10/19

The answer is 1.C 2.$500

Answer:

1,035,600

Step-by-step explanation:

since the rate sales increased 2.5% per year 8*2.5=20/100=0.2*863,000=172,600 and since we already are earning 863,000 so 863,000+172,600=1,035,600

Answer:

AB = 12

Step-by-step explanation:

Answer:

2 I think thats the answer

Step-by-step explanation:

Answer:

y = {1, 3, 7}

Step-by-step explanation:

Given

y = ½x + 3

Domain: {-4, 0, 8}

Required

Determine the range of the function

To do this, we simply substitute each value of the domain in the given expression

We start with the first

Substitute -4 for x in y = ½x + 3

y = ½ * -4 + 3

y = -2 + 3

y = 1

Then 0

Substitute 0 for x in y = ½x + 3

y = ½ * 0 + 3

y = 0 + 3

y = 3

Lastly, 8

Substitute 8 for x in y = ½x + 3

y = ½ * 8 + 3

y = 4 + 3

y = 7

Hence, the range of the function is:

y = {1, 3, 7}

Answer:1,3,7

Step-by-step explanation:

Answer:

-1.555 and 1.555

Step-by-step explanation:

For a standard normal distribution:

P(- Ƶ ≤ Z ≤ Ƶ) = 0.88

The normal distribution on the curve is symmetrical about Z = 0

Thus

P( -Ƶ ≤ Z ≤ 0) = P( 0 ≤ Z ≤ Ƶ)

However;

This implies that:

P( -Ƶ ≤ Z ≤ 0)  +  P( 0 ≤ Z ≤ Ƶ) = 0.88

2P ( 0 ≤ Z ≤ Ƶ)  = 0.88

P( 0 ≤ Z ≤ Ƶ) = 0.44

P(Z ≤ Ƶ) - P( Z ≤ 0) = 0.44

Since P(Z ≤ 0) = 0.50

P(Z ≤ Ƶ) = 0.44 + 0.50

P(Z ≤ Ƶ) =  0.94

From the probability value table

z = 1.555

Thus the endpoints are:

-1.555 and 1.555

Answer:

C

Step-by-step explanation:

(-2,4) means that it excludes the numbers -2 and 4 from the set, but includes all the numbers in between -2 and 4!

A. this equals 4, so that's eliminated.

B. this equals -2, eliminated as well.

C. this equals 0.01! Which is in the set!

D. this equals 9.8696, WAY over 4!

The answer is C!

(side note, (-2,4) excludes -2 and 4, while [-2,4] includes -2 and 4. You can mix and match also! (-2,4] would exclude -2 but include 4, for example)

Answer:

I think it is 13107200

Step-by-step explanation:

I think the answer might be 2,883,623. Hopefully, this helps you! :)

Answer:a.4 dollars per pint

b.4th a pint/ 1 cup per dolllar

c. 5 pints

d.32 dollars

Step-by-step explanation:

Answer:

(2, -3)

Step-by-step explanation:

if move down 2 units, then y needs to move up 2 units

if move right 3 units, then x needs to move left 3 units  

(5-3, -5+2)

(2, -3)

Answer:

5(6)+3(4.5)- 6(2)= 31.5

Step-by-step explanation:

Answer:

hmmmmm

Step-by-step explanation:

Answer: slope is [tex]\frac{7}{2}[/tex] or 3.5

Step-by-step explanation:

Slope =  [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] = [tex]\frac{4-(-3)}{7-5}[/tex] = [tex]\frac{7}{2}[/tex]

Answer:

[tex]\boxed {\boxed {\sf m= \frac{7}{2} \ or \ 3.5 }}[/tex]

Step-by-step explanation:

The slope formula is the change in y over the change in x.

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

In this formula, (x₁, y₁) and (x₂, y₂) are the points given. We are given the points (5, -3) and (7,4). Therefore,

[tex]x_1=5 \\y_1= -3\\x_2=7 \\y_2=4[/tex]

Substitute the values into the formula.

[tex]m=\frac{4--3}{7-5}[/tex]

Solve the numerator.

[tex]m=\frac{7}{7-5}[/tex]

Solve the denominator

[tex]m=\frac{7}{2}[/tex]

[tex]m=3.5[/tex]

The slope between the points is 7/2 or 3.5

Answer:

29x-12

Step-by-step explanation:

29x-12

Step-by-step explanation:

8•x=8×

8•-5=-40

7•3x=21x

7•4=28

-40+28=-12

21x+8x=29x

Answer:

i think you have chosen the right answer i don't really know its tricky for me

Step-by-step explanation:

Answer:

Let set A = {x|x<-3}

Let set B = {x|x>5}

The solution for set A could be graphically represented with a number line that contained an unshaded circle surrounding the integer -3 and all values to the left or less than -3 would be shaded.

The solution for set B could be graphically represented with a number line that contained an unshaded circle surrounding the integer 5 and all values to the right of 5 or greater than 5 would be shaded.

If you placed the two number lines close to each other, you would see that they do not intersect.

Thus there is no solution for the intersection of set A and set B as defined in the given problem.

Step-by-step explanation:

Answer:

-20,250

Step-by-step explanation:

PEMDAS

Multiply left to right

45 * -10 * 45

45* -10

-450 * 45 =

-20,250