Mathematics High School

How to solve a system of equations by graphing

Answers

Answer 1
You first graph both equations.
Once that is done find the point of intersection (where the equations cross).
The point where they meet up (intersect) will be your solution.

Related Questions

The accompanying diagram shows two triangles. Which proportion could be used to solve for x ?

Answers

Answer:
A) 32/x=12/15

Explanation:
When we compare 32/x, we’re looking the ratio between the two side lengths on the first triangle. When we compare 12/15, we’re looking at the ratio between the two side lengths on the second triangle. These ratios must be equal to each other since the two triangles are similar, and we can use this to solve for x.

I hope this helps! Please comment if you have any questions.

i need help my class is depending on me plzz help

Answers

Answer:

C

Step-by-step explanation:

Well, the area or a circle is pi r^2. The radius is 5. 5 squared is about 25. 25 times pi is roughly 78.5. So the best answer is C.

PLS HELP ME I SUCK AT MATH

Answers

I believe it’s 0.7 !

Help please//brainliest!

Answers

Hi there!

The answer for this question is C, BD. As you can see, BC and DA are the same which means that AB and CD are also the same.

That only leads to BD which means that BD has the shortest sides.

A 747 Airplane is 762 inches tall. How tall is it in feet

Answers

Answer:

The answer is 63.5 feet :)

the airplane is 63.5 feet tall when converted from inches to feet

HURRY WILL MARK YOU BRAINLIEST

Answers

Answer:

x=11/4

Step-by-step explanation:

4x+5=8x-6

4

x

=  8

x

−

1

1                <simplify

-8x -8x

-4x=-11                

x=11/4

11/4 there your welcome

If a=-3, b=6, C=-5, what is the vertex?

Answers

Answer:

use the formula a(x-h)2+k

use the formula a(x-h)2+k

I have two bags of counters.
The first bag contains two red counters and one blue counter.
The second bag contains one red counter, one blue counter
and two yellow counters.
I take a counter at random from both bags.
b) What is the probability that exactly one of the counters will be red?
Answer as a fraction

Answers

Answer:

7/12 chances of it being red

Step-by-step explanation:

Hope this helped! :)

What is the y value in this system of equations?
3x + 2y = 16
7x + y = 19

Answers

Answer:

y=5

Step-by-step explanation:

Answer:

3x + 2y = 16 y=−3/2x+8

7x + y = 19 y=−7x+19

Step-by-step explanation:

Which vectors represent the reflection of the vector <3, -7> across the x-axis? A. [3/7} B. [-3/7] C. <-3, 7> D. <3, 7> E. [7/-3] F. <7, -3>

Answers

Answer:

D)    < 3, 7)>

Step-by-step explanation:

Explanation:-

Given that the vector < 3 , -7 >

Given the vector reflection across the x-axis

                   (x,y) → (x , -y)

The vector < 3,-7> →< 3, -(-7)>

                  < 3,-7> →< 3, 7)>

A pet store has 45 mice. The number of mice is 22 more than the number of cats. Which equation can be solved to find the number of cats c?

Answers

Answer:

c+22=45

Step-by-step explanation:

It is the answer

A triangle has sides with lengths of 4 yards, 10 yards, and 11 yards. Is it a right triangle?
yes
no

Answers

Answer:

no

Step-by-step explanation:

for a triangle to be a right triangle, the sum of the square of its legs must equal the square of its hypotenuse

a² + b² = c²

in this problem, 4² + 10² ≠ 11²

16 + 100 ≠ 121

What is another way to write (2x - 3)?​

Answers

Answer:

See below

Step-by-step explanation:

Many ways...

x+x-3

2x-6+3

5x-3x-3

(4x-6)/2

And the list goes on...

Answer: (2x)-3

              2x-3

Step-by-step explanation:

if this isn't right let me know I have others to

y=−4(x+2) ^2 −1. Graph the equation

Answers

Answer:

4x^2+15

Step-by-step explanation:

1. multiply whole parenthesis by power of 2

2. gets you 4(x^2+4)-1

3.Multply and it gets you 4x^2+16-1 so it would be 4x^2+15 for your answer

4. throw that into your calculator and make sure its not on radian mode and then press graph



Miguel is driving on a highway. He uses one gallon of gas every 50 miles he drives. The distance, D (in miles), he travels on g gallons of gas
is given by the following

How far does Miguel drive he uses 4 gallons of gas

Answers

200 miles because 50 x 4 is 200

what is
g(x)= 7/8(7) - 1/2

Answers

Answer: g=3/56

Hope this helps you

what is 1-1 i wanna know because i dont know

Answers

Answer:

Step-by-step explanation: 0

Answer:

0

Step-by-step explanation:

no explanation needed

The population of a school increased by 16%, and now the population is 667. What was the
population before the increase?

Answers

Answer:

575

Step-by-step explanation:

[tex]667 \div (1 + 16\%) = 575[/tex]

The figure shows the dimensions of a city park in feet.

Part A: What is the area of the park?

A.1,088 ft2

B.1,188 ft2

C.1,208 ft2

D.968 ft2

Answers

c ............................
B 1,188 ft2 i think

If 72 = 12x, what does x equal?

Answers

Answer:

x=6

Step-by-step explanation:

So, x is our unknown variable. An so you have to ask yourself, what times 12= 72? The answer would be 6, because 12x6=72

The proper way to do it, would be to divide 12/12 so you isolate the variable, and what you do to one side, you do to the other, so divide 72 by 12 and you get 6! Hope this helps!

Ava takes care of 6 horses Each horse eats about 85 pounds of feed per year. How many pounds of feed will all the horses eat in 18 months?
A. 114lb
B. 30lb
C. 108lb
D. 765lb

Answers

Answer:

The answer is A

Explanation:

If a horse eats 85 pounds of horse feed a year that adds up to about 7 pounds a month so if you add it up it equals 114

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Answers

Hugh the same time as the first time in the future and the other is a great way to get the best out of the way and

What is 5x - 3y when x equals negative 2 and Y equals 6

Answers

Answer:

-28

Step-by-step explanation:

We have the equation [tex]5x-3y[/tex] and are given that [tex]x=-2, y=6[/tex].  To solve this equation, we simply replace the variables with their real value.  In action, this would be [tex]5(-2)-3(6)=-10-18=-28[/tex].

PLease help!!
Is your friend correct? Why or Why not?

Answers

Answer:

Yes

Step-by-step explanation:

[tex]\sqrt[2]{\frac{1}{4} } =\frac{\sqrt[2]{1} }{\sqrt[2]{4} } =\frac{1}{2}[/tex]

What the first guy said is correct

Find the slope of the line passing through the pair of points.
(-4,5) and (0, 2)

Answers

Answer:

y = 3/-4x + 2

Step-by-step explanation:

Answer:

slope = [tex]-\frac{3}{4}[/tex]

Step-by-step explanation:

1) To find the slope between a pair of points, use the slope formula: [tex]\frac{y_2-y_1}{x_2-x_1}[/tex].

[tex]x_1[/tex] and [tex]y_1[/tex] represent the x and y values of one point the line passes through. [tex]x_2[/tex] and [tex]y_2[/tex] represent the x and y values of another point the line also passes through. We know the line passes through (-4,5) and (0,2). So, substitute their x and y values for the formula (following the appropriate order) and solve:

[tex]\frac{(2)-(5)}{(0)-(-4)} \\= \frac{2-5}{0+4} \\= \frac{-3}{4}[/tex]

Thus, the slope is [tex]-\frac{3}{4}[/tex]

Find d.
Please explain if you know, thank you so much.

Answers

Answer: D is 8

Step-by-step explanation: nothing

Answer:

Step-by-step explanation:

the triangle is a 30º-60º-90º triangle, there's a formula for the sides of this type of triangle which I will attach

x = d

9 = x√3

9/√3 = x

x = 3√3

d = 3√3

Suppose that y varies directly with x and inversely with z, and y = 6 when x = 8 and z = 4. Write the equation that models the relationship. Then find y when x = 2 and z = 3

Answers

Answer:

y=18

Step-by-step explanation:

explanation is in the attachment above

Which equation does the graph below represent?


A coordinate grid is shown. The x axis values are from negative 5 to positive 5 in increments of 1 for each grid line, and the y axis values are from negative 20 to positive 20 in increments of 4 for each grid line. A line is shown passing through the ordered pairs negative 4, 16 and 0, 0 and 4, negative 16.


y = fraction 1 over 4x


y = 4x


y = fraction negative 1 over 4x


y = −4x

Answers

Answer:

The answer is D!! Trust me I have took this quiz and got it right.

Step-by-step explanation:

Have a good time on your test!

Answer:

The answer is B! trust me

Step-by-step explanation:

Please help will brainlist

Answers

Answer:

It should be A

Step-by-step explanation:

(I'm not 100% sure, but two of the sides are congruent so I would just choose 3!)

Change 273° Kelvin to Celsius degrees.
P Leeeeeeeeeeee Sssssssssss help me

Answers

Answer: 273 degrees kelvin =  -0.15 degrees celsius

hope this helps brainliest plz

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