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3 years ago

Solution for y=-3x+6 and 2x-3y=4

Mathematics

1 answer:

bija089 [108]3 years ago

5 0

Answer:

x=2 pls give brainlist

Step-by-step explanation:

2x-3(-3x+6) = 4

2x+9x-18 = 4

11x=22

x=2

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Two years of local Internet service cost $685, including the installation fee of $85. What is the monthly fee?

AnnZ [28]

685-85=600
1 year =12 months
12 multiply by 2 =24
600 divided by 24=25
answer=25

8 0

3 years ago

Read 2 more answers

Help any 1 please!?

sveticcg [70]

Yo sup??

total distance travelled by Janae =sum of distance on the 2 semicircles+ sum of the distances on the 2 track

=2πr+2*l

l=3 miles

r=1 mile

So,

total distance=2*3.14*1+2*3

=6.28+6

=12.28

=12.3 miles

Therefore the correct answer is option D

Hope this helps

3 0

3 years ago

A shuttle company charges $3.25 plus $0.55 per mile. A taxi company charges $2.50 plus $0.60 per mile. After how many miles will

vodka [1.7K]

Answer:

15 miles:)

Step-by-step explanation:

8 0

4 years ago

Lesson 4.10 - Analytic Geometry

Nadusha1986 [10]

Geometric shapes are mathematical shapes that include squares and triangles

<h3>How to prove the shape is a square</h3>

The side lengths of a square are congruent, and the adjacent sides are perpendicular.

So, we start by calculating the side lengths using the following distance formula

$d = \sqrt{(x_1 -x_2)^2 + (y_1 -y_2)^2}$

Using the above formula, we have:

$AB = \sqrt{(3-2)^2 + (4+2)^2} = \sqrt{37$

$BC = \sqrt{(2+4)^2 + (-2+1)^2} = \sqrt{37$

$CD = \sqrt{(-4+3)^2 + (-1-5)^2} = \sqrt{37}$

$DA = \sqrt{(-3-3)^2 + (5-4)^2} = \sqrt{37}$

The above shows that the side lengths of the square are congruent.

Next, calculate the slope of the sides using:

$m = \frac{y_2 -y_1}{x_2 -x_1}$

So, we have:

$m_{AB} = \frac{4 +2}{3 -2} = 6$

$m_{BC} = \frac{-2 + 1}{2+4} = -\frac 16$

$m_{CD} = \frac{-1 -5}{-4+3} = 6$

$m_{DA} = \frac{5 -4}{-3-3} = -\frac 16$

Notice that the opposite slopes are congruent, and the adjacent slopes are opposite reciprocal.

The above highlight, and the equal side lengths show that the figure (1) is a square

<h3>How to prove the shape is a right isosceles triangle</h3>

The legs of a right isosceles triangle are congruent, and the legs are perpendicular.

So, we start by calculating the lengths of the legs using the following distance formula

$d = \sqrt{(x_1 -x_2)^2 + (y_1 -y_2)^2}$

Using the above formula, we have:

$XY = \sqrt{(5-4)^2 + (-1-4)^2} = \sqrt{26$

$XZ = \sqrt{(5-0)^2 + (-1+2)^2} = \sqrt{26$

The above shows that the legs of the right isosceles triangle are congruent.

Next, calculate the slope of the legs using:

$m = \frac{y_2 -y_1}{x_2 -x_1}$

So, we have:

$m_{XY} = \frac{5-4}{-1 -4} = -\frac{1}{5}$

$m_{XZ} = \frac{5-0}{-1+2} = 5$

Notice that the slopes are opposite reciprocal.

The above highlight, and the equal legs show that the figure (2) is a right isosceles triangle

Read more about geometric shapes at:

brainly.com/question/14285697

7 0

3 years ago

A bus holds 30 people, and a van holds 10 people. Write an expression that shows the number of people that could fill b buses an

musickatia [10]

Answer:

30b+10v

Step-by-step explanation:

7 0

4 years ago