^70 POINTS
can someone help me with this i rlly need it




The length of a rectangle is 1 inch less than twice its width, and its perimeter is 40 inches. Find the width of the rectangle.


7 in.
13 in.
14 in.




If the second equation is multiplied by 5 and then the equations are added, the result is _____.

x + 5y = 3
2x - y = -2


9x = 13
11x = -7
9x = -7


For the following system, use the second equation to make a substitution for x in the first equation.

x + 3y = 5
x + 7 = 2y

What is the resulting equation?


2y + 2x + 3y = 5
2y + 7 + 3y = 5
2y - 7 + 3y = 5




Graph the following system of equations. Click on the graph until the correct one appears.

y > -x + 1
y ≤ 2x - 3


Find A B if A = {3, 6, 9, 12} and B = {2, 4, 6, 8, 10}.



{6}
{2, 3, 4, 6, 8, 9, 10, 12}


Choose the correct mathematical translation for the given statement.

She is at most twenty years old.


x 20
x ≥ 20

Answer:

Hi there! Your answer is C and D

Step-by-step explanation:

You might know that a Rhombus is a special type of parallelogram whose all sides are equal. The difference between a square and a rhombus is that all angles of a square are right angles, but the angles of a rhombus need not be right angles. So, a rhombus with right angles becomes a square. B is not because all sides are equal and it has right angles. A is not because it does not have equal sides. I hope this helps! :]

Answer:

C

Step-by-step explanation:

Just answer it

Hshshjshssuusudusu

Aiiajsbbaa

Answer: 864.2 i greater than 363.3 that is my answer

Step-by-step explanation:

Answer: x= +3 y= +5

Step-by-step explanation:

X' constant rate of change is 3 and y'all constant rate of change is 5 so they are linear

Answer:

3.75 or 3 3/4 miles an hour

Step-by-step explanation:

2 1/4 divided by 3 is 0.75 multiplied by 5 is 3.75 which in fraction form is 3 3/4

Answer:

A , C and D

Step-by-step explanation:

the score is dependent on the number of gold bars that she collects.

Answer:

The correct answer is: 2. t=0.45a

Step-by-step explanation:

Let t be the price of apples

and a be the number of apples

The price and quantity are directly proportional

[tex]t \propto a[/tex]

Removing the proportionality symbol introduces a proportionality constant in the equation

[tex]t = ka[/tex]

So far we know that cost of 6 apples is $2.70

Putting in the equation

[tex]2.70 = k (6)\\k = \frac{2.70}{6}\\k = 0.45[/tex]

Putting the values of k will give us:

[tex]t = 0.45a[/tex]

Hence,

The correct answer is: 2. t=0.45a

Answer:

The slope of AB is 4/3

Step-by-step explanation:

The Slope of a Line

If a line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

[tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]

It's required to find the slope of the line AB shown in the figure. The coordinates of the endpoints are A(-3,2) B(0,6), thus the slope is:

[tex]\displaystyle m=\frac{6-2}{0+3}[/tex]

[tex]\displaystyle m=\frac{4}{3}[/tex]

The slope of AB is 4/3

Answer: i think its c

Step-by-step explanation:

Answer:

22400

Step-by-step explanation:

280×80 miles

22400 miles

Answer:

n-7>-4

n-7+7>-4+7

n>-4+7

n>3

Answer:

Step-by-step explanation:

look the inequality is the variable. 7-4=3. That means n>3

Answer:

[tex]\frac{(a^{2}*\pi )}{2} + 8a[/tex]

Step-by-step explanation:

We need to find the area of that semi circle and add it to the area of the rectangle. We can easily find the area of the rectangle with the equation length times width which is 4 *2a or 8a.

The radius is a and since the area of a semi-circle is (pi*r^2)/2, we can get a^2*pi/2.

Therefore, the equation would be [tex]\frac{(a^{2}*\pi )}{2} + 8a[/tex]

Answer:

Infinite Many Solutions

Step-by-step explanation:

2x - y = 2 (x + 1)

2x - (-2) = 2( x + 1)

2x + 2 = 2(x + 1)

2x + 2 = 2x + 2(1) : Here I used the distributive property

2x + 2 = 2x + 2: There is infinite many solutions because if you graph this on the graph the lines will be not intercect in only one place but in an infinity amount of places because the two equations are the same in terms of Y = mx + b.

Answer:

The length for segment AB is 5 units

Step-by-step explanation:

Distance Between two Points in the Plane

Given two points A(x1,y1) and B(x2,y2), the distance between them is:

[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

We must find the length for the segment AB. The coordinates of the endpoints are A(-3,2) B(0,6).

Calculating the distance:

[tex]d=\sqrt{(0+3)^2+(6-2)^2}[/tex]

[tex]d=\sqrt{3^2+4^2}[/tex]

[tex]d=\sqrt{9+16}[/tex]

[tex]d=\sqrt{25}[/tex]

d = 5 units

The length for segment AB is 5 units

Answer:

400

Step-by-step explanation:

to find volume of a rectangular prism is whl which in ur case equals 400

Answer:

f(x)=2x+1

Step-by-step explanation:

Hope you understand

Answer:

1=a 2=c

i think not sure tho

Answer:

0.25 or 1/4

Step-by-step explanation:

Answer: 1/4

Step-by-step explanation:

Answer:

286.5 gallons of water

Step-by-step explanation:

1,086 ÷ 3.79= 286.5435356

Round to the nearest tenth

286.5

Answer:

286.54 gallons

Step-by-step explanation:

You have 1,086 liters and you are trying to find how many gallons it is

Luckily you are given how many liters go into a gallon

So from there it's simple division

1,086/3.79 = 286.5435356200528

Now, it tells you that you only need to round to the nearest tenth. And since the nearest tenth isn't greater than 5, you can just leave it as 286.54

So, 286.54 gallons is the amount that the washing machine holds

Answer:

(4,2)

Step-by-step explanation:

To find the solution, we can simply find the intersection. That is (4,2)

Answer:

D

Step-by-step explanation:

because both lines meet at point (4,2)

Answer:

15 sides

Step-by-step explanation:

Answer:

no

Step-by-step explanation:

30x3.165 is 94.950 she will be just short of 100

Answer:

Step-by-step explanation:

Here you go mate

Step 1

h + 13.1 = -13.1  Equation

Step 2

h + 13.1 = -13.1  simplify

Step 3

h + 13.1 = -13.1  Add -13.1 to both sides

h=-26.2

answer

26.2