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2 years ago

What is the relationship between segment ED and segment AC?

1 answer:

6 0

D midpoint of EC -----------------> FD parallel to AC and FD=AC/2=14/2=7
2-EB=EA E midpoint of AB 
DB=DC D midpoint BC ...............> ED=AC/2=2 
3-T midpoint of SR 
U midpoint of QR ---------> TU = QS/2 
QS=2 TU = 4.4 
4- The same steps SR=2 UV=9 
5-N midpoint of KM 
O midpoint of ML 
* NO parallel to Kl

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You need to solve a system of equations. You decide to use the elimination method. Which of these is not allowed? 2x - 3y = 12

suter [353]

Answer:

Step-by-step explanation:

The Elimination Method is the method for solving a pair of linear equations which reduces one equation to one that has only a single variable.

If the coefficients of one variable are opposites, you add the equations to eliminate a variable, and then solve.

If the coefficients are not opposites, then we multiply one or both equations by a number to create opposite coefficients, and then add the equations to eliminate a variable and solve.

When multiplying the equation by a coefficient, we multiply both sides of the equation (multiplying both sides of the equation by some nonzero number does not change the solution).

So, option B is not allowed (it is not allowed to multiply only one part of the equation)

6 0

2 years ago

Please please help me and fast

Eduardwww [97]

Its 12. Part a was 2 part b was 3
6×2=12
4×3=12

4 0

3 years ago

Simplify the expression of 1.2x + 3y - 3 - 4.7x by combining like terms. ASAP

EastWind [94]

Answer:

-3.5x + 3y - 3

Step-by-step explanation:

1.2x + 3y - 3 - 4.7x

=> -3.5x + 3y - 3

Therefore, our simplified expression is -3.5x + 3y - 3

Hoped this helped.

5 0

2 years ago

Read 2 more answers

The radius of the base of a cylinder is increasing at a rate of 7 millimeters per hour. The height of the cylinder is fixed at 1

Ilya [14]

Answer:

The rate of change of the volume of the cylinder at that instant = $791.28\ mm^3/hr$

Step-by-step explanation:

Given:

Rate of increase of base of radius of base of cylinder = 7 mm/hr

Height of cylinder = 1.5 mm

Radius at a certain instant = 12 mm

To find rate of change of volume of cylinder at that instant.

Solution:

Let $r$ represent radius of base of cylinder at any instant.

Rate of increase of base of radius of base of cylinder can be given as:

$\frac{dr}{dt}=7\ mm/hr$

Volume of cylinder is given by:

$V=\pi\ r^2h$

Finding derivative of the Volume with respect to time.

$\frac{dV}{dt}=\pi\ h\ 2r\frac{dr}{dt}$

Plugging in the values given:

$\frac{dV}{dt}=\pi\ (1.5)\ 2(12)(7)$

$\frac{dV}{dt}=252\pi$

Using $\pi=3.14$

$\frac{dV}{dt}=252(3.14)$

$\frac{dV}{dt}=791.28\ mm^3/hr$ (Answer)

Thus rate of change of the volume of the cylinder at that instant = $791.28\ mm^3/hr$

6 0

2 years ago

PLEASE HELP!!!

Ksju [112]

ANSWER

$a = 1,2,3,6$

EXPLANATION

The given equation is

$ax = 6$

Divide both sides by $a$

$\Rightarrow \: \frac{ax}{a} = \frac{6}{a}$

Cancel out common factors on the left hand side,

$\Rightarrow \: x = \frac{6}{a}$

For this solution to be a whole number, then $a$ should be a factor of
$6$ .

The reason is that, factors of 6 will divide exactly in to 6 without a remainder, making the answer a whole number.

The whole numbers that are factors of 6 are,

$1,2,3 \: and \: 6$

Note that, the set of whole numbers are,

{ $0,1,2,3,4,...$ }

3 0

2 years ago

Read 2 more answers