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3 years ago

PLEASEEEEE HELP I DO REALLY NEED IT

Mathematics

1 answer:

Mkey [24]3 years ago

4 0

Answer:

the second option

Step-by-step explanation:

the SSS congruence postulate would be used

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Our family road trip to Yellowstone required driving approximately 610 miles. After 4 hours of driving we stopped for lunch and

Sonja [21]

Less then 10hrs but more then 9hrs not sure exactly

7 0

3 years ago

PLSS HELP IF YOU TURLY KNOW THISS :)

galina1969 [7]

Step-by-step explanation:

(4k+2)÷10

(4(12)+2)÷10

(48+2)÷10

50÷10

7 0

3 years ago

Read 2 more answers

How far away can a person live from a radio station and hear its broadcast if the signal covers a circular area of 40000 square

Serjik [45]

Answer: Approximately 112.86 miles in any direction away from the radio station

Step-by-step explanation: If the radio signal of the radio station can cover a circular area of 40,000 square miles, it simply means any direction away from the radio station that is within the coverage area. With the radio station as the center, we would have a radius that can reach any point within the area, and any distance beyond the radius would be out of coverage area. If the area has been given as 40000, then we have;

Area of a circle = pi x r^2

40000 = 3.14 x r^2

By cross multiplication we now have

40000/3.14 = r^2

Add the square root sign to both sides of the equation

112.8665 = r

Therefore, the farthest a person can live away from the radio station is approximately 112.86 miles

7 0

3 years ago

Sketch the lines given by x+y =6 and −3x+y = 2 on the same set of axes to solve the system graphically.Then solve the system of

tankabanditka [31]

Answer:

x= 1 and y= 5

The graphical solution is in the attachment.

Step-by-step explanation:

There's a lot of methods for solving a system of equations. For example, the substitution method.

You have to solve one of the equations for one variable (x or y) and replace it in the other equation and solve it for that variable. Therefore you will obtain a solution and then you have to replace that solution in the first equation in order to obtain the second solution.

In this case, solving the first equation for x:

x+y=6

Adding -y both sides:

x + y - y = 6-y

x = 6-y (I)

Replacing it in the second equation:

-3x+y = 2

-3(6-y) + y = 2

Applying the distributive property:

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

-18 +3y + y= 2

Adding 18 both sides:

18 -18 +4y = 2 + 18

4y = 20

Dividing by 4 both sides:

y = 20/4 =5

Replacing it in (I)

x= 6 - 5

x = 1

In order to sketch the given lines, you have to obtain two points for each one and trace the line containing those points. The solution of the system of equations is the point of intersection of the two lines.

-The intersection with the x-axis is given by replacing y=0

x + 0 = 6

x=6

P1(6,0)

-The intersection with the y-axsis is given by replacing x=0

0 + y =6

y = 6

P2(0,6)

-The intersection with the x-axis:

-3x + 0 =2

x = -2/3

P3(-2/3,0)

-The intersection with the y-axis:

-3(0) + y = 2

y=2

P4(0,2)

The intersection of the two lines is setting the equations equal to each other:

y = 6-x and y = 3x + 2

6-x = 3x +2

Solving for x:

6 - 2 = 3x + x

4 = 4x

x = 1

And replacing x=1 in any of the equations you will obtain the solution point (1,5)

3 0

3 years ago

What is 4 and 2/5 multiplied by 16.5

iren [92.7K]

Method 1:

$4\dfrac{2}{5}=4\dfrac{2\cdot2}{5\cdot2}=4\dfrac{4}{10}=4.4\\\\4\dfrac{2}{5}\cdot16.5=4.4\cdot16.5=72.6$

Method 2:

$16.5=\dfrac{165}{10}=\dfrac{165:5}{10:5}=\dfrac{33}{2}\\\\4\dfrac{2}{5}=\dfrac{4\cdot5+2}{5}=\dfrac{22}{5}\\\\4\dfrac{2}{5}\cdot16.5=\dfrac{22}{5}\cdot\dfrac{33}{2}=\dfrac{11}{5}\cdot\dfrac{33}{1}=\dfrac{363}{5}=72\dfrac{3}{5}$

7 0

3 years ago