what is the answer? pls help

Answer:

1,0

Step-by-step explanation:

No need to expand look at the roots of the brackets.

(x-1)=0

x=1

x^2 and -9x have roots 0

Think of it as whatever sets the expression to 0.

Answer: y-7=4(x-2)

Step-by-step explanation:

Point-slope form is y-y₁=m(x-x₁). Since we are given the point and slope, we can directly plug them in.

y-7=4(x-2)

Now, we know that y-7=4(x-2) is the equation.

Answer:

8

Step-by-step explanation:

List the prime factors of each number. Multiply those factors both numbers have in common.

Answer:

if you were to get a answer you would have to put it in ur own words because some teachers come on here

Step-by-step explanation:

Answer:

it should be 45,870

Step-by-step explanation:

Answer:

5) 32 because 25 +7 = 32

6) 10$ because she used 15 dollars than she was paid 5 dollars which she gave to her parents so she now only owes them 10 back

Answer:

The slope of a line is

[tex] \frac{y2 - y1}{x2 - x1} [/tex]

Get 2 points off each line

(x1, y1)

(x2, y2)

And sub them into the formula.

The y intercept is where the line cuts the y axis (the vertical line)

From what I can make out the y intercept for the first part in question 12 is (0,-2) and for the third part is (0,0) but I can't see the second one.

It might help if you took a clearer photograph I'm so sorry but I can't really see it.

Answer: the area of the resulting surface is π/16 [ 4√(17)  + In( 4 + √( 17)) ]

Step-by-step explanation:

Given that;

y = e^(-4x),  x ≥ 0

then, dy/dx = -4e^(-4x)

now, √( 1 + (dy/dx)² ) = √( 1 + ( -4e^(-4x))²) = √( 1 + 16e^(-8x)

so the surface area of the surface obtaining by rotating the curve y = e^(-4x) on ( 0, ∞ ) about x-axis is,

S = ₀∫^∞ 2πy √( 1 + (dy/dx)² )  dx

S = ₀∫^∞ 2πe^(-4x) . √( 1 + 16e^(-8x) dx

S = 2π. ₀∫^∞ e^(-4x) . √( 1 + 16e^(-8x) dx

so LET 4e^-4x = u ⇒  -16e^(-4x) dx = du

⇒e^-4x dx = du/ -16

so whenx = 0, then u =4 and when x → ∞ then e^(-4x) → 0 so u →0

therefore

S = 2π ₄∫⁰ √(1 + u²) . du/-16

= π/8 ₀∫⁴ √(1 + u²) . du

= π/8 [ u/2√(1 + u²)  + 1/2 In ( u + √( 1 + u²) ]₀⁴

WE MAKE USE OF

∫√( a² + u²) du = u/2√(a² + u²) + a²/2 In ( u + √( a² + u²)) + C

so

= π/8 [ 4/2√(1 + 16)  + 1/2 In ( 4 + √( 1 + u16 ]

= π/8 [ 2√(17)  + 1/2 In ( 4 + √( 17)) ]

= π/16 [ 4√(17)  + In( 4 + √( 17)) ]

therefore the area of the resulting surface is π/16 [ 4√(17)  + In( 4 + √( 17)) ]

Answer:

A. The triangles are similar because the ratios of the corresponding sides are the same

Step-by-step explanation:

Both ∆sloom similar in shape. Let's find out if they are actually similar.

∆TUV and ∆QRS are similar if the ratio of their corresponding sides are the same all through.

Thus:

TU = 70, QR = 25, UV = 84, RS = 30, TV = 42, QS = 15

If both ∆s are similar, then, TU/QR = UV/RS = TV/QS

TU/QR = 70/25 = 2.8

UV/RS = 84/30 = 2.8

TV/RS = 42/15 = 2.8.

Ratio of corresponding sides is the same, therefore, both triangles are similar.

Therefore, the following statement is true:

A. The triangles are similar because the ratios of the corresponding sides are the same

Answer:

Step-by-step explanation:

idek

Answer:

The population of Queens increased by 16,075.

The population of Brooklyn increased by 11,870 more than that, then the population of Brooklyn increased by:

16,075 + 11,870 = 27,945

a) The total combined population increase is (when we round the addens)

I will round in the thousands place.

To do it, we must look at the hundreds place, if the decimal is 5 or larger, we round up.

If the decimal is smaller than 5, we round down.

16,074 ≈ 16,000

27,945 ≈ 28,000

16,000 + 28,000 = 44,000

b) Now using the actual numbers:

16,075 + 27,945 = 44,020.

c) now let's compare our two results:

Let's see the difference between them

a = 44,000

b = 44,020

a - b = 44,000 - 44,020 = -20.

This means that our estimated from (a) is 20 units smaller than the actual number.

But this is insignificant compared with the 44,020.

Why?

we can calculate the relative error as:

100%*(estimate value - real value)/(real value)

100%*(-20/44,020) = -0.05%

So the error is on the -0.05%, which is despreciable.

From this, we can conclude that the estimation in (a) is a really good estimation.

Answer:

5

Step-by-step explanation:

no or 6

Answer:

14.62 I believe

Step-by-step explanation:

Answer:

6,270

Step-by-step explanation:

hope this helps

Answer:

А(0/6;-2) и B(-5.6;17)

Step-by-step explanation:

(-2;4) поставь координаты место (x;y)

Например: 4=-3*(-2)+b, найдите b, а затем нарисуйте график.

Я отправила вам фото. Там всё написано и график тоже

Answer: Point B represents the number 2 on the number line.

How?: Well, any whole number (without the minus/negative sign), is equal to a positive number. 2 is a whole number. So, therefore, it's Point B.

Answer:

3 hours

Step-by-step explanation:

$12 = 2hours

Find how much Clare was paid for one hour

Total money earned ÷ number of hours = wage per hour

12 ÷ 2 = $6 per hour

set up equation

6x = 18

This equation says 6 dollars an hour × number of hours = $18

To solve for this equation, divide both sides by 6 (this isolates the variable)

6x ÷ 6 = 18 ÷ 6

1x = 3

x = 3

Answer:

y=[tex]\frac{2}{7}[/tex]x

Step-by-step explanation:

First: find slope of line by using the formula [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] with the two points (0,0) and (7,2)

slope(m) = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] = [tex]\frac{2-0}{7-0}[/tex] = [tex]\frac{2}{7}[/tex]

Second: plug your data into the point slope formula [tex]y-y_1=m(x-x_1)[/tex]

y-0=[tex]\frac{2}{7}[/tex](x-0)

y-0=[tex]\frac{2}{7}[/tex]x

y=[tex]\frac{2}{7}[/tex]x

Answer:

y=2/7x

Step-by-step explanation:

Answer:

Ratio time to the number of burritos = 4:9

Step-by-step explanation:

Given:

Number of burritos make = 18

Total time taken = 8 min

Find:

Ratio time to the number of burritos

Computation:

Ratio time to the number of burritos = Total time taken / Number of burritos make

Ratio time to the number of burritos = 8 / 18

Ratio time to the number of burritos = 4 / 9

Ratio time to the number of burritos = 4:9

Answer:

5+6=11

Step-by-step explanation:

:D

Answer:

t=5c+6d

Step-by-step explanation:

5c=cheese pizza cost

6d=topped pizza cost

Answer:

The Length is 16.

The width is 22.

Step-by-step explanation:

[tex]Area=Width*Length\\352=(2L-10)*(L)\\352=2L^2-10L\\0=2L^2-10L-352\\x=\frac{-b+/-\sqrt{b^2-4ac} }{2a} \\b=-10; a=2; c=-352\\ x=\frac{10+/-\sqrt{100-4(-352)*(2)} }{2*2} \\x=\frac{10+/-\sqrt{100+2816)} }{4}\\x=\frac{10+/-\sqrt{2916)} }{4}\\x=\frac{10+/-54 }{4}\\x=64/4=16[/tex]

Answer:

5 (x+2) +2x is equal to 7x + 10

Step-by-step explanation:

To find the value of this equation you would have to apply the distributive property by changing 5 (x+2) to 5x +10. (When applying the distributive property you will always multiply the numbers in the parentheses by the number on the left of it). Then you would combine like terms by adding 2x and 5x together. You will then have 7x + 10.

Step-by-step explanation:

1.) Distribute = 5x+10

2.) Collect Like-Terms = 5x & +2x

3.) Add 5x and +2x , which = 7x

Now you have your answer, which is: 7x + 10.

I hope this helped.