9 less than twice x is three more than x. What is the value of x

Answer:

quadratic formula

Step-by-step explanation:

this applies when you look for the x values of a quadratic equation

Answer:

144

Step-by-step explanation:

Please comment if you need an explanation :D

Answer:

The distance is 20

Step-by-step explanation:

Answer:

See explanation

Step-by-step explanation:

Recall that all the sides of the square are equal

Hence;

Area of a rectangle= l * b ------- equation 1

Perimeter of a rectangle = 2(l + b)----------equation 2

Area of the rectangle = 140 square centimeters

140 = lb

l = 140/b

Perimeter of the rectangle =  54 centimeters

substituting l = 140/b into equation 2

54 = 2(140/b + b)

Multiplying through by b

54b = 280 + 2b^2

Hence;

2b^2 - 54b + 280 = 0

Solving the quadratic equation

b=20 or b=7

substituting b=20 or b=7 into l = 140/b

l = 140/20 or l = 140/7

l = 7 or 20

THEREFORE;

b=20 cm or b=7 cm

l = 7cm or 20cm

Answer:

Bro u need to shu.t up all ready

Step-by-step explanation:

Answer:

A) [tex]x = -12[/tex]

B) [tex]y = - 1[/tex]

Step-by-step explanation:

Answer:  the first one is -12 and the second one is 4

Answer:

9x

Step-by-step explanation:

Since all of them have the same variable you can add them up

1x+3x+5x=9x

Answer:

to 1 decimal place,. (a) tan (3x + ... (i) 2cos 2x – 5sin 2x = 0 R cos(2x + λ) = 0 λ = 68.2 ⇒ 2x + 68.2 = 90 B1. 2x + λ = ... (16cos2x – 9)(cos2x – 1) = 0.

Answer:

yeah the graph does match the equation

Answer:

Yes because the y intercept is at -1 like the equation and also can I have brainliest.

Step-by-step explanation:

Answer:

Step-by-step explanation:

3b+8c=50c

3b=50c-8c

3b=42c

b=14c

So there are 14 cookies in each box.

Answer:

14

Step-by-step explanation:

First, take away the 8 cookies that were not part of the 3 boxes.

(50 - 8 = 42)

Now we know that 3 boxes of cookies can hold 42 total cookies. However, we need to know how much cookies 1 box can hold. If the 42 cookies are divided evenly between the 3 boxes, our equation would look like this:

42/3 = 14

Therefore, the answer is 14 cookies in each box.

Answer:

14

Step-by-step explanation:

4n + 2 and n = 3

4(3) + 2 = 12 + 2

12 + 2 = 14

Answer:

The correct answer is 64.6%

Step-by-step explanation:

95 student total are taking a math class out of 147 kids. 95/147 = 0.646, carry the decible and you get your percentage which is 64.6%

Answer:

C

Step-by-step explanation:

(0,-4) (-4, -3)

-3- -4 / -4 -0 = 1/-4 is the slope

so is C

Answer:

The answer is B.

Step-by-step explanation:

slope-intercept form is y=mx + b with m being slope and b being y-intercept. slope is change in y over change in x, and in this situation the change in y is 1 and the change in x is 4. so, slope = 1/4. so now our equation is y=1/4x+b. now we have to find the y-intercept, which in this graph is -4. so, the equation is y=1/4x+-4. Hope this helps!

Answer:

Step-by-step explanation:

(a) Your $160 is correct.

(b) No, this is not a proportional relationship, because the graph does not go through the origin.  That, in turn, is because there is a fixed, up-front cost of $120.

(c) The total cost as a function of the number of months, m, is

TC(m) = $120 + ($40/month)m

Answer:

J. 9

Step-by-step explanation:

First we have to plot the points (In the picture)

Now we have to count how close the are together which would make it 8.

And the closest to that would be 9.

Hope this helps :)

Answer:

Step-by-step explanation:

The distance between two points is

d^2=(x2-x1)^2+(y2-y1)^2

We have points (-4,-6) and (4,4) so

d^2=(-4-4)^2+(-6-4)^2

d^2=8^2+10^2

d^2=64+100

d^2=164

d=12.8

So H 13 units is closest to the distance between the two points.

Answer:

a^4b^3/2

Step-by-step explanation:

Answer:

the simplify version is a^16 b^3

Answer: 3/80 or .375

Step-by-step explanation:

Answer:

The value of b is either + 6 or -6

Step-by-step explanation:

Here, given that we have the value for the discriminant, we want to calculate the value for the coefficient of x

mathematically, the discriminant can be calculated using the equation;

D = b^2 - 4ac

a represents the coefficient of x^2 which is 3

b represents the coefficient of x given as b

2 represents the last number

D is the discriminant = 12

So we have that;

12 = b^2 - 4(3)(2)

12 = b^2 - 24

b^2 = 24 + 12

b^2 = 36

b = √36

b = +6 or -6

x= 6 x= 1

Step-by-step explanation:

hope this helps..........

Answer:

7.15 (two sig figs)

Step-by-step explanation:

There is a time limit dude, googling is a faster way

1. Area of rectangle

A = l*z

2. Find z

93 = 13*z

z ≈ 7.15

Answer:

7km

Step-by-step explanation:

The given figure is a rectangle

The formula to find area of rectangle is,

[tex]l \times b[/tex]

Here,

Length = 13km

Area = 91 km^2

Then breadth = 91/13

= 7 km

Answer:

No

Step-by-step explanation:

From part (b)

If number who voted = 280

Number of voters who would have voted Geron:

35% * 280

0. 35 * 280 = 98 voters

40 people voted for others:

To check if estimate from. Part b is accurate :

10% voted for others

10% of estimated voters = 40

Let, number of estimated voters = x

0.1 * x = 40

0.1x = 40

x = 40/0.1

x = 400

If 40 people Voted others, the the number of voters should be 400 and not 280

Answer:

No

Step-by-step explanation:

Answer:A

Step-by-step explanation:

The exponential decay functions are y = 2(2/5)ˣ and y = 2(4/3)ˣ

An exponential function's curve is created by a pattern of data called exponential decay, which exhibits higher decreases over time.

The exponential decay function:

Aₙ = A₀(1-r)ˣ, where y = Final amount, A₀ = Initial amount, r = Rate of decay in decimal form, x = Time.

We know,

The exponential decay function:

Aₙ = A₀(1-r)ˣ, where y = Final amount, A₀ = Initial amount, r = Rate of decay in decimal form, x = Time.

And to find the y-intercept,

Substitute the value of x = 0 and solve for y.

Then y =2.

The functions are y = 2(2/5)ˣ and y = 2(4/3)ˣ

Therefore, the function are y = 2(2/5)ˣ and y = 2(4/3)ˣ.

To learn more about the exponential decay;

https://brainly.com/question/14344314

#SPJ2

Answer:

2x2=4

4+4=8

4/8 times 2 is 8/8, or 1.

Step-by-step explanation:

Answer:

first multiply 2 by 2 and then 4 by 4 becuase they are in parenthesis, then multiply whatever you got for 2x2 and 4x4 and multiply them together and then multiply that  answer by 2. then you should get the correct anwer

Step-by-step explanation:

hope this helps!!

Answer:

Se usaron 700 g de queso, quedando 300 g de queso.

Step-by-step explanation:

Si se usó 1/5 más 1/2 de queso, el total usado fue:

[tex]\frac{1}{5}+\frac{1}{2}=\frac{7}{10}[/tex]    

Entonces, se usó 7/10 del kg inicial de queso. Sabiendo que:

1 kg      ------ 1000 g

7/10 kg ------ x g

Entonces x = 700 g, lo que significa que se usaron 700 g de queso, quedando 300 g de queso.

Este problema se puede resolver utilizando una regla de tres, como se hizo aquí, o mefiante razones, en una equacion lineal.

Espero te haya sido de ayuda!