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3 years ago

Find the value of x.

Mathematics

1 answer:

Alex787 [66]3 years ago

7 0

Answer:

Since all angles of a triangle are equal (60°), it's an equilateral triangle hence all sides are equal.

hence x = 16 units

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Solve the following system of equations. 2x+y=3 I= 2y - 1 x= y=

marin [14]

Note: I am assuming your second equation is:

x = 2y - 1

Answer:

The solution to the system of equations is:

x = 1

y = 1

Step-by-step explanation:

Given the system of equations

2x+y=3

x = 2y - 1

solving the system of equations using the elimination method

$\begin{bmatrix}2x+y=3\\ x=2y-1\end{bmatrix}$

Arrange equation variables for elimination

$\begin{bmatrix}2x+y=3\\ x-2y=-1\end{bmatrix}$

Multiply x-2y=-1 by2: 2x-4y=-2

$\begin{bmatrix}2x+y=3\\ 2x-4y=-2\end{bmatrix}$

subtracting the equations

$2x-4y=-2$

$-$

$\underline{2x+y=3}$

$-5y=-5$

now solve -5y = -5 for y

$-5y=-5$

Divide both sides by -5

$\frac{-5y}{-5}=\frac{-5}{-5}$

Simplify

$y=1$

For 2x+y=3 plug in y=1

$2x+1=3$

subtract 1 from both sides

$2x+1-1=3-1$

Simplify

$2x=2$

Divide both sides by 2

$\frac{2x}{2}=\frac{2}{2}$

Simplify

$x=1$

Therefore, the solution to the system of equations is:

x = 1

y = 1

8 0

3 years ago

James Has twO girls and his friend jEnnie has to girls how many girls do they have together

vodka [1.7K]

Answer:

Step-by-step explanation:

total no. of girls James have = 2

total no. of girls Jennie have = 2

Now,

total no. of girls both have

= 2 + 2 = 4

5 0

3 years ago

Read 2 more answers

50pts

lana66690 [7]

Answer:

C is correct.

Step-by-step explanation:

This is true because B and C go up 5 on the y-axis to get to B' and C', but A goes up 6, making it not a translation.

8 0

3 years ago

Read 2 more answers

Crater lake in Oregon is shaped like a circle with a diameter of about 5.5 miles.

Alexxandr [17]

Answer:

14.14 miles

Step-by-step explanation:

The perimeter of a circle is calculated with 2πr

The r stands for radius. The radius is half of the diameter.

So r=2.25

Plug it in 2π(2.25)

It was simplify to 4.5π

Which would simplify down to 14.14 miles rounding to the nearest hundredth.

4 0

3 years ago

At a local amusement park 70% of the rides are 48 inches taller if there are 80 rides in total how many are made for kids who ar

Rashid [163]

Answer:

56 rides

Step-by-step explanation:

Total number of rides = 80 rides

If 70% of the rides are 48 inches taller, the total number of rides 70% taller wil be;

Rides 48 inches taller = 70% * 80

Rides 48 inches taller = 0.7 * 80

Rides 48 inches taller = 56

Hence the total rids made for kids that are 48inches taller is 56 rides

4 0

3 years ago