All categories

3 years ago

HELP I DONT UNDERSTAND.

Mathematics

1 answer:

Nadusha1986 [10]3 years ago

5 0

Answer:

Step-by-step explanation:

the answer " I need because" isn't even correct.. :P

it should be " I need one more side of each triangle , because then I can use the side angle side rule to say the triangles are the same. "

You might be interested in

Help please this is geometry!!!

Arada [10]

Answer:

i really dont know and do you know how i really dont know

Step-by-step explanation:

it bc i dont literally

3 0

3 years ago

A particle moves along the curve below. y = √ 8 + x 3 As it reaches the point ( 1 , 3 ) , the y -coordinate is increasing at a r

Dmitry [639]

Answer:

<em>The x-coordinate is changing at 10 cm/s</em>

Step-by-step explanation:

<u>Rate of Change</u>

Suppose two variables x and y are related by a given function y=f(x). If they both change with respect to a third variable (time, for instance), the rate of change of them is computed as the derivative using the chain rule:

$\displaystyle \frac{dy}{dt}=\frac{dy}{dx}\cdot \frac{dx}{dt}$

We have

$y=\sqrt{8+x^3}$

Or, equivalently

$y^2=8+x^3$

We need to know the rate of change of x respect to t. We'll use implicit differentiation:

$\displaystyle 2y\cdot \frac{dy}{dt}=3x^2\cdot \frac{dx}{dt}$

Solving for dx/dt

$\displaystyle \frac{dx}{dt}=\frac{2y\cdot \frac{dy}{dt}}{3x^2}$

Plugging in the values x=1, y=3, dy/dt=5

$\displaystyle \frac{dx}{dt}=\frac{2(3)\cdot 5}{3\cdot 1^2}=10$

The x-coordinate is changing at 10 cm/s

7 0

3 years ago

Express each number in standard form.

Vitek1552 [10]

a) 1,000 + 0 + 40 + 9

b) 40,000 + 3,000 + 800 + 70 + 0

c) 8,000,000 + 100,000 + 5

3 0

3 years ago

Help I don’t get these at all

xxTIMURxx [149]

You have a lot of questions here, so I'm going to help you with the bottom four.

Combine like terms:

3q - 8 - 6p + 8q - 4p

We can rearrange the terms to make this easier to simplify.

3q + 9q - 6p - 4p - 8

12q - 10p - 8 is the simplified version of the expression.

Simplify.

-32t/12t

The best way to simplify this is to look for the GCF of 32 and 12, which is 4.

-32/4 = -8

-12/4 = -3

The simplified form of this fraction is -8t/3t

[3(x - 4) - 2] + [5(x - 1) + 5]

There are two important things you need to know here.

First, you need to know PEMDAS.

Second, you need to know the distributive property.

First, we're going to use the distributive property.

[3x - 12 - 2] + [5x - 5 + 5]

Now, we just combine like terms.

3x - 14 + 5x

Then we do it again.

8x - 14 is the simplified version of the given expression.

30 + 19 * 26 - (-16)

This is more of a PEMDAS problem than the last, so we'll work through this in order.

First up is Multiplication.

Multiply 19 * 26

30 + 494 - (-16)

Next, we add, from left to right.

524 - (-16)

Because we have two negative signs, they cancel out and create a plus sign.

524 + 16

Add.

540

8 0

3 years ago

Angle bcd is a circumscribed angle of circle a. What is the length of line segment ac?

enyata [817]

Step-by-step explanation:

Answer:

The length of segment AC is 10 units ⇒ 1st answer

Step-by-step explanation:

Look to the attached figure

In circle A

∵ AB is a radius

∵ BC is a tangent to circle A at B

- The radius and the tangent are perpendicular to each other

at the point of contact

∴ AB ⊥ BC at point B

∴ m∠ABC = 90°

In ΔABC

∵ m∠B = 90°

∵ AB = 8 units

∵ BC = 6 units

- By using Pythagoras Theorem (Square the hypotenuse is

equal to the sum of the squares of the other two sides of

the triangle)

∵ (AC)² = (AB)² + (BC)²

∴ (AC)² = (8)² +(6)²

∴ (AC)² = 64 + 36

∴ (AC)² = 100

- Take √ for both sides

∴ AC = 10 units

The length of segment AC is 10 units

follow me plzzz

4 0

3 years ago