Solve the system if equations by substitution
Y=4x+9
y=9x+10

Why urgent?

See attachment for math work and answer.

I gave you two different answers for 2b.

Answer:

I believe it is 4 billion

Step-by-step explanation:

Hope I helped!

Answer:

10

Step-by-step explanation:

Answer:

I would say about 67 minutes

Step-by-step explanation:

3/6=k/7

cross multiply then

6k=21

divide by the coefficient of k

k=3.5

Answer:

The slope is 2/1 and the y-intercept is -6.

Step-by-step explanation:

With the y=mx+b formula, m is the slope and b is the intercept.

Answer: -6

Step-by-step explanation:

Answer:

The answer is c

Step-by-step explanation:

Answer:

Option C. [tex]98^{\circ}[/tex]

Step-by-step explanation:

[tex]\angle DAB + \angle BAC = 180[/tex] (the two angles sum to the angle of a straight line: [tex]180^{\circ}[/tex])

[tex]122+\angle BAC = 180[/tex]

[tex]\angle BAC = 180-122[/tex]

[tex]=58^{\circ}[/tex]

[tex]24+58+x = 180[/tex] (sum of interior angles of triangle is [tex]180^{\circ}[/tex])

[tex]82+x=180[/tex]

[tex]x=98^{\circ}[/tex]

∴ Option C is correct.

Hope this helps :)

Answer:

Lesser x = -7

Greater x = 7

Step-by-step explanation:

g(x)= -10x² + 490

don't ask me Khan academy says so

Answer:

lesser x=-7 greater x=7

Step-by-step explanation:

use algebra to find x^2 by itself

x^2 =49

now take the square root of booth sides, both positive and negative

and you have your answer

Answer: you didnt post graphs to look at

Step-by-step explanation:

Answer:

tgvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

Step-by-step explanation:

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

Answer:

12.8, 12.09, 12, 12, 1/2, 2/5

Step-by-step explanation:

This is my answer if you mean greatest to smallest if you did not mean that tell me and I will re-write this.

Answer:

17

Step-by-step explanation:

x + 3x = 68

4x = 68

x = 17

Answer:

10

Step-by-step explanation:

The store wants to make a 20% profit:

Multiply the cost of the toy by 1.20 ( cost plus 20%).

6.25 x 1.20 = $7.50

This means when the toy is sold at 25% off, it needs to be $7.50 to make the 20% profit.

When the item is 25% off, that means it would sell for 75% of the original price.

Now to find what the price needs to be before the 25% off divide the profit price by 75%

7.50 / 0.75 = $10

K = $10

Answer:

=22

Step-by-step explanation:

16 + ( 48/8)

operate on the brackets first

16 + 6

22

Answer:

14

Step-by-step explanation:

A number that is exactly halfway between 1 and 27 is the middle number

In other words, we want to find the median between 1 and 27

Median = (x + y) / 2

Let

x = 1

y = 27

Median = (x + y) / 2

= (1 + 27) / 2

= 28/2

= 14

Therefore, the number between 1 and 27 is 14

Answer:

h(4) = 3

f-1(-3) = - 1

Step-by-step explanation:

One

h(x) = 2x - 5

h(4) = 2*4 - 5

h(4) = 8 - 5

h(4) = 3

Two

Let y = f(x)

y = 5x + 2           Interchange x and y

x = 5y + 2           Subtract 2 from both sides

(x - 2) = 5y          Divide by 5

(x - 2)/5 =  y

but y = f'(x)

so f(x) = (x - 2)/5

f-1(-3) = (-3 - 2) / 5

f-1(-3) = -5/5

f-1(-3) = - 1

Answer:

see below

Step-by-step explanation:

we know that

[tex]\angle 1 =\angle 2[/tex]

and that

[tex]\angle 1 +\angle 2 = 180[/tex]

so we substitute angle 2 by angle 1

[tex]\angle 1 +\angle 1 = 180\\\\2\angle 1=180\\\\\angle 1 = 90[/tex]

so there we have it

[tex]\angle 1 = 90 =\angle 2[/tex]

Answer:popular sovereignty

Step-by-step explanation: this is because when the bill is passed sovereignty is within

Answer: This will be A .

Step-by-step explanation:

Answer:6 0

Step-by-step explanation:

Answer: 7/11+(-1/11)

            6/11 or in decimal form: 0.54

Hope this helps..... Stay safe and have a Merry Christmas!!!!!!!! :D

Answer:

I'm pretty sure the bakery uses 480 pounds per day

Step-by-step explanation:

You would multiply 1/3 by 60, which is 60 minutes an hour, and that gives you 20 which you would then multiply 20 by 24, which is 24 hours a day, which would then give you 480 pounds of flour per day.

Answer:

480 pounds

Step-by-step explanation:

because 1/3 times 60 is 20 and that is 20 pound /a hour then  multiply it by 24

because there are 24 hours a day

Answer:

3/4

Step-by-step explanation:

3/4 is one example of a fraction that is greater than 1/2. If 1/2 become 2/4, therefore 3/4 is a fraction which is greater than 1/2.

Answer:

Step 1: Simplify both sides of the equation.

6(3x−5)−7x=25

(6)(3x)+(6)(−5)+−7x=25(Distribute)

18x+−30+−7x=25

(18x+−7x)+(−30)=25(Combine Like Terms)

11x+−30=25

11x−30=25

Step 2: Add 30 to both sides.

11x−30+30=25+30

11x=55

Step 3: Divide both sides by 11.

x=5

Step-by-step explanation:

The solution to the equation is x = 5.

To solve the equation 6(3x - 5) - 7x = 25, we need to simplify and isolate the variable x. Let's break it down step by step:

Distribute the 6 to the terms inside the parentheses:

18x - 30 - 7x = 25

Combine like terms on the left side of the equation:

(18x - 7x) - 30 = 25

11x - 30 = 25

Move the constant term to the right side by adding 30 to both sides:

11x = 25 + 30

11x = 55

Finally, isolate x by dividing both sides of the equation by 11:

x = 55 / 11

x = 5

Hence, the solution to the equation is x = 5. By simplifying and applying algebraic operations, we find that when x is equal to 5, the equation 6(3x - 5) - 7x = 25 holds true.

To learn more about the equation;

https://brainly.com/question/12788590

#SPJ6

Answer:

10 & one half

Step-by-step explanation:

Answer:

10 and 1/2

Step-by-step explanation:

Answer:

(3,7)

Step-by-step explanation:

A function is a relation in which the members of the domain (x-values) DO NOT repeat. So, for every x-value there is only one y-value that corresponds to it. y-values can be repeated.

Hope this helps!!

Answer: x = 8/1681

Step-by-step explanation:

Answer:

[tex]\frac{1}{cos^2a }= tan^2 a[/tex]

Step-by-step explanation:

Explanation:-

Given   sin²a + cos²a = 1  

and

              [tex]\frac{1}{cos^{2} a} \\= \frac{sin^2a+cos^2a}{cos^2a} \\ \\\\ = \frac{sin^2a}{cos^2a} +\frac{cos^2a}{cos^2a}[/tex]

= tan²a + 1



Answer:

2.50

Step-by-step explanation:

Lets find the unit rate first! 3.75/3 because that is the problem. Now once we divide that we get 1.25. With 1.25 we multiply by 2 to get your answer of 2.50!

Have a good day!

Answer:

The answer am almost postive is 2.5

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

Because it just is

Answer:

25 And 36

_________

Did The Test. Hope This Helps :)

Answer:

b) y = -2/3 + 1

Step-by-step explanation:

The format for the equation is y = mx + b

(m is the slope, and b is the y intercept)

Slope is rise over run (the units the line moves up and the units the line moves to the right)

In this case, the slope is: -2/3 because it goes down 2 and to the right 3.

The y intercept is 1.

This makes our equation:

y = -2/3 + 1

Answer:

y=1/2x+5

Step-by-step explanation:

first you have to find the slope by using [tex]\frac{y2-y1}{x2-x1}[/tex]

so when you plot in your points and you will get 1/2x.

then you need to find your y-intercept

and since you don't have a 0 you have to slove by using y=mx+b (slope-intercept) formula

you plug in your points and you will get

b=5 and that is how you get your equation.