can someone help me with these three questions pls

Answer:

Step-by-step explanation:

You have dimensions of the original and scaled figures.

The missing dimension can be found using proportions as below

Answer:

$100.8

Step-by-step explanation:

Answer:

The cost is $352.80

Step-by-step explanation:

step 1. 14 * 12 = 168 ----> find out the area (base times height)

step 2. 168 * 2.10 = 352.80 -----> multiply the area with the cost of per square foot of the carpet

I hope this helped :))

Answer:

1)

x = 1

y = -3

2)

x = 3 or x = -3

Step-by-step explanation:

1)

System of equations, we plug in y to the second equation

[tex]4x + 2(4x-7) = -2\\4x+8x-14 = -2\\12x = 12\\x=1[/tex]

We then plug x back into the first equation to find y

[tex]y = 4(1) -7\\y = -3[/tex]

2)

[tex]4x^2 +3=39\\4x^2=36\\x^2=9\\x=3, -3[/tex]

Answer:

1. 10

2. 4

3. 8

Step-by-step explanation:

You have to fill in the given values for y and undo in reverse order to find x.

1. y = 6

6 = x - 4

6 (+ 4) = x - 4 (+ 4)

10 = x

2. y = 0

0 = x - 4

0 (+ 4 ) = x - 4 (+ 4)

4 = x

3. y = 4

4 = x - 4

4 (+ 4) = x - 4 (+ 4)

8 = x

I hope this helps! Have a lovely day!! :)

Answer:

yes, we can write zero in the form of p/q.

[example] that is 0/3, 0/5...

Answer:

685

Step-by-step explanation:

so if you have $86 and if that cost up to $1 and that would equals 685

Answer:

BC = 25

Step-by-step explanation:

I'm gonna assume that the triangle is an isosceles triangles, so sorry if this doesn't help!

4x + 1 = 2x + 23

2x + 1 = 23

2x = 22

x = 11

3(11) - 8

33 - 8

= 25

Answer:

135

Step-by-step explanation:

A = bh

A = 15 x 9

A = 135

Answer:

28.57%

Step-by-step explanation:

to find the probability of something being picked you divide the amount of what your trying to get (2) by the total amount of what's in it (7).

2÷7=.2857

to turn it into a percentage we move the decimal point 2 to the right

28.57

Answer:

[tex]f(x)=2x^2-4x-2[/tex]

Step-by-step explanation:

Standard form of a quadratic equation: [tex]y=ax^2+bx+c[/tex]

[tex]\begin{aligned}f(x) & =2(x-1)^2-4\\& =2(x^2-2x+1)-4\\& = 2x^2-4x+2-4\\& = 2x^2-4x-2 \end{aligned}[/tex]

Answer:

Step-by-step explanation:

The amounts invested and saved are independent and their total is the combined amount.

Correct choice is A

Lets see

Add both

Answer:

60 miles

Step-by-step explanation:

[tex]\frac{1}{8}*\frac{7.5}{7.5}=\frac{7.5}{60}[/tex]

Remember these are ratios!

Hence, they are 60 miles apart

Answer

its A the answer is on quizzes  

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

rational numbers do not have unending numbers trailing it

ex: 1, 1/4 13/2

irrational numbers do not end

(pi, square root of 2)

Answer:

Step-by-step explanation:

Answer:

i think d but i don't know for sure

Answer:

c = 65h.

Step-by-step explanation:

cost = rate per hour * hours worked:

c = 65 * h .

Answer:

57 inches^2 is the answer buddy

Step-by-step explanation:

BxH divided by 2

Answer:

245-x

Step-by-step explanation:

Since x is the anount fewer than the mount Andrea picked, to get Julio's amount you would subtract x from 245.

Answer:

32°

Step-by-step explanation:

Complementary angles sum to 90°

the complement of 58° is

90° - 58° = 32°

Complementary angles add up to [tex]\sf{90^\circ}[/tex].

In order to find the complement of the given angle, we should set up the following equation:-

(let n be the unknown angle)

[tex]\sf{n+58=90}[/tex]

Subtract 58 from both sides:-

[tex]\bigstar{\boxed{\pmb{n=32}}[/tex]

Hence, the complement of the angle is 32 degrees.

Hope everything is clear; if you need any explanation/clarification, kindly let me know, and I will comment and/or edit my answer :)

Step-by-step explanation:

oh, come on ! you really cannot figure that one out ?

as there are 3 ft in 1 yd, 6 yd are then 6×3 = 18 ft.

so, 18 ft cost $2.88

1 ft costs then 2.88/18 = $0.16

Answer:

[tex]\sqrt{81}[/tex] = 9 :)

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

Pythagorean theorem is a^2 + b^2 = c^2.

In this case, a = 12, c = 15, and we do not know the value of "b."

Let's solve by plugging the values in!

12^2 + b^2 = 15^2

144 + b^2 = 225

Subtract 144 on both sides:

b^2 = 81

b = sqrt 81

b = 9

Answer:

Infinitely many solutions.

Step-by-step explanation:

[tex]3x+y=2[/tex]

[tex]6x+2y=4[/tex]

[tex]6x+2(2-3x)=4[/tex]

[tex]6x+4-6x=4[/tex]

[tex]6x-6x=4-4[/tex]

[tex]0=0[/tex]

Since the two equations are the same, the system of equations has infinitely many solutions.

Answer:

B

Step-by-step explanation:

the sum of the roots = - [tex]\frac{b}{a}[/tex]

x² + 6x - 55 = 0

with a = 1 , b = 6 , then

sum of roots = - [tex]\frac{6}{1}[/tex] = - 6

Step-by-step explanation:

6x3 (3 is because it's half of 6) =18 to find the area of I triangle, I now divide it by 2. 18÷2=9. there are 8 separate triangles so 9x8=72. now the square. 6x6=36. now add 72 + 36=108 in.

well, since arc's length is s = rθ where θ is in radians, and in the Unit Circle r = 1 and we also know that θ = 5π radians, then

s = (1)(5π)

s = 5π.

Answer:

D, 87 is the answer

Step-by-step explanation:

360 is a full circle so subtract 360 to 273 and its 87 hope this helps! :)

Answer:

d

Step-by-step explanation: