I need help please.(will give brainliest)

Answer:

20

Step-by-step explanation:

We know that the diagonals are bisected, which means

2x+4 = 6x-8

Subtract 2x from each side

2x+4-2x = 6x-8-2x

4 = 4x -8

Add 8 to each side

4+8 = 4x-8+8

12 = 4x

Divide by 4

12/4 = 4x/4

3 =x

We want to know CF = DB = 2x+4 + 6x -8

CF = 8x-4

     = 8(3) -4

    = 24-4

   = 20

Step-by-step explanation:

hear is your answer in attachment

Answer:

a is to the right of b. On a number line the orientation has 0 as the starting number and counts on each whole number integer on to the eight. Therefore if a is greater than b, be will be toward the left and a will be toward the right.

Answer:

Sin X=Cos Y

Step-by-step explanation:

Objective: Understand trigonometric relations such that

Cosine and Sine are similar to complementary angles that if X+Y are complementary angles,

Cos X= Sin Y and Cos Y= Sin X

One thousand represents three hundred fifty plus a number. So, the number will be 650.

The addition is one of the mathematical operations. The addition of two numbers results in the total amount of the combined value.

We have been given that

One thousand represents three hundred fifty plus a number.

Let the number be x, so

The expression will be as

1000 = 350 + x

x = 1000 - 350

x = 650

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Answer:

45 sq units im pretty sure

Step-by-step explanation:

hope this helps

Answer:

X=18

Step-by-step explanation:

I got x=18 I don't have the work but I know it is right I have the key to a final review with that problem on it!

Answer:

U = -3

Step-by-step explanation:

U/-1 +-4=-1

Add 4 to each side

U/-1 +-4+4=-1+4

U / -1 = 3

Multiply each side by -1

U / -1  * -1 = 3* -1

U = -3

Answer:

[tex]x=0[/tex] and [tex]x=\pm\sqrt{3}[/tex]

Step-by-step explanation:

[tex]f(x)=x^5-3x^3[/tex]

[tex]0=x^5-3x^3[/tex]

[tex]x^5-3x^3=0[/tex]

[tex]x^3(x^2-3)=0[/tex]

[tex]x^3=0[/tex] and [tex]x^2-3=0[/tex]

[tex]x=0[/tex] and [tex]x=\pm\sqrt{3}[/tex]

See the graph for a visual of the x-intercepts.

Answer:

Across x-axis = (-4, 2) across y-

axis = (4, -2)

Answer:

No solution is possible from the given information.

Step-by-step explanation:

This isn't Hogwarts.

If you don't include the graph we can't magically see it.

Answer:

y = 3 (4)^x

Step-by-step explanation:

quadruples means multiplies by 4

This equation is in the form

y = ab^x  where a is the initial amount and b is the amount we multiply by

y = 3 (4)^x

Answer:

B

Step-by-step explanation:

The exponential model is of the form

y = a[tex]b^{x}[/tex]

where a is the initial amount and b the growth rate

Here a = 3 and b = 4 , then

y = 3 [tex](4)^{x}[/tex] → B

Answers:

b)  92100 decimeters

c)   6650 decaliters

=====================================================

Work Shown for part b)

1 decameter = 10 meters

1 decimeter = 1/10 of a meter

10 decimeters = 1 meter .... multiply both sides by 10

100 decimeters = 10 meters ... multiply both sides by 10

100 decimeter = 1 decameter

921*(100 decimeter) = 921*(1 decameter)

92100 decimeters = 921 decameters

-------------------

Work Shown for part c)

We could follow the same idea as part b). I'm going to use another approach as shown in the diagram below. This conversion method is known as the railroad tracks method in some math textbooks.

Each column represents two things that are equivalent to one another. For example, 1 kiloliter is the same as 1000 liters. So each column, when you divide top over bottom, represents the value 1.

Notice the unit cancelations as shown by the color coding. The goal is to have every unit cancel except for the decaliters unit which is what we want to end up with ultimately.

Once you have the railroad tracks set up, you multiply straight across.

Along the top, we have 66.5*1000*1 = 66500

Along the bottom we have 1*10 = 10

Divide those results: 66500/10 = 6650

So 66.5 kiloliters converts to 6650 decaliters

Answer:

1) 92100 dm

2) 6650 decalitres

Answer:

horizontal asymptote : is 2

vertical : is -2

Y intercept: (0;2)

Answer:

[tex]-x[/tex]

Step-by-step explanation:

[tex]3x-4x = -1x[/tex]

Hope this helps

Answer: The line segments AB and EF are both equal

Answer:

The lines are both equal.

Step-by-step explanation:

AB and EF are the same lengths.

Answer:

$78.94

Step-by-step explanation:

15% = 0.15

multiply to the total (68.65)

0.15 × 68.65 = 10.2975

$68.65 + 10.2975 = $78.94

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Answer:

sin D = 0.25

Step-by-step explanation:

If ∠E = 90°, it means that the triangle is a right angle triangle.

Thus, hypotenuse will be the longest side which will be DC = 65

Since we are given CE = 16 and ED = 63, I have attached a diagram showing this triangle.

From the diagram, since we are looking for sin ∠D, we can say that;

sin D = opposite/hypotenuse

Now, opposite = CE = 16

Hypotenuse = CD = 65

Thus;

sin D = 16/65

sin D = 0.2462

Approximating to the nearest hundredth gives;

sin D = 0.25

Step-by-step explanation:

x is 12 because DE is twice BC

Answer:

p > 16/5

Step-by-step explanation:

-5p<-16

Divide each side by =5, remembering to flip the inequality

-5p/-5 > -16/5

p > 16/5

There is an open circle at 16/5 and the lines goes to the right

Answer:

[tex]- \frac{1}{5} xy -\frac{4}{5} xy \\ = { \tt{( - \frac{1}{5} - \frac{4}{5} )xy }} \\ \\ = { \tt{ - xy}}[/tex]

Answer:

most likely C

Step-by-step explanation:

the overall shape the points make don't go in any particular direction other than sideways, so there doesn't seem to be a particular correlation

The undefined term is point.

In geometry, an angle is formed when two rays are joined at their endpoints. These rays are called the sides or arms of the angle. Let us read about the different parts of an angle.

Parts of an Angle

There are two main parts related to an angle - the arms and the vertex.

Arms of the Angle

The two rays which join at a common point to form the angle are called the arms of the angle. Observe the figure given below which shows that OA and OB are the arms of the angle AOB.

[tex]vertex[/tex]of the angle

[tex]vertex[/tex] is a common endpoint that is shared by the two rays. Observe the figure in which the [tex]vertex[/tex] O is marked as the joining point of the two arms.

Measure of an angle

An angle is measured in degrees. One full rotation around a point forms a complete angle of 360°.

As, the is defined on the basis of arms , vertices, measurement.

They all related to point and point doesn't have a particular definition.

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Answer:

B. Vertical Angles

D. Supplementary

Answer:

B) 6 ÷ 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Step-by-step explanation:

We must follow BPEMDAS rules.

We first look at the parenthesis, and evaluate it left to right. In the parenthesis, the first order of higher operation would be division, hence B is our answer.

Answer: [tex](-5.5,4.062)\ \text{and}\ (-5.5,-8.062)[/tex]

Step-by-step explanation:

Given

The two vertices of a equilateral triangle are [tex](-9,-2)\ \text{and}\ (-2,-2)[/tex]

Suppose the third vertex is [tex](x,y)[/tex]

Side length in equilateral triangle are equal.

[tex]\Rightarrow \sqrt{\left( -2+9\right)^2+\left( -2+2\right)^2}=\sqrt{\left( x+9\right)^2+\left( y+2\right)^2}\\\text{squaring both sides}\\\\\Rightarrow 7^2=\left( x+9\right)^2+\left( y+2\right)^2\quad \ldots(i)\\\\[/tex]

Similarly,

[tex]\Rightarrow \sqrt{\left( -2+9\right)^2+\left( -2+2\right)^2}=\sqrt{\left( x+2\right)^2+\left( y+2\right)^2}\\\\\Rightarrow 7^2=\left( x+2\right)^2+\left( y+2\right)^2\quad \ldots(ii)[/tex]

Subtract (i) and (ii)

[tex]\Rightarrow \left( x+9\right)^2-\left(x+2\right)^2=7^2-7^2\\\\\Rightarrow (x+9+x+2)(x+9-x-2)=0\\\Rightarrow (2x+11)7=0\\\\\Rightarrow x=-\dfrac{11}{2}[/tex]

Insert the value of [tex]x[/tex] in equation (ii)

[tex]\Rightarrow \left(-5.5+2\right)^2+\left(y+2\right)^2=7^2\\\\\Rightarrow \left(-5.5+2\right)^2+\left(y+2\right)^2-\left(-5.5+2\right)^2=7^2-\left(-5.5+2\right)^2\\\\\Rightarrow \left(y+2\right)^2=36.75\\\\\Rightarrow y=4.06217\dots ,\:y=-8.06217[/tex]

So, two possible vertex are [tex](-5.5,4.062)\ \text{and}\ (-5.5,-8.062)[/tex]

m<A = 114° , m<Q = 114° , m< D= 66° ,m<U = 66°

x=13

FIRST THREE OPTIONS

A,B,C

Answer:

[tex]x = 13[/tex]

[tex]m<Q = 114°[/tex]

[tex]m<D = 66°[/tex]

Step-by-step explanation:

First option :

[tex](5x+1)=(6x−12)[/tex]

[tex]5x+1−6x=−12[/tex]

[tex]−x+1=−12[/tex]

[tex]−x=−12−1[/tex]

[tex]−x=−13[/tex]

[tex]x=(−13) \times (−1)[/tex]

[tex]x = 13[/tex]

Second option :

<D = 6(13) - 12

= 78 - 12

= 66°

Third option :

<A + <D = 180°

<D = 180 - 66

= 114°

Answer:

Can confirm the answer is true

Step-by-step explanation:

Just took the test