f(−2) = ________ need help

Answer:

1 = Given

2 = Given

3 = Substitution Property

4 = Distributive Property

5 = Given

6 = Substitution Property

7 = Simplify

8 = Subtraction Property

9 = Addition Property

By substituting given c and d values inn the given equation and simplifying we get a=b. Hence, proved.

Given that, 2c =d-2b, c = a-b and d= a + b.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

To prove: d=a+b

Proof:

1. 2c =d-2b (Given)

2. c=a-b (Given)

3. 2(a-b)=d-2b (Substitute c=a-b)

4. 2a-2b=d-2b

5. d=a+b (Given)

6. 2a-2b=a+b-2b (Substitute d=a+b)

7. 2a-2b=a-b

8. a-2b=-b (Transpose a to LHS and simplify)

9. a=b (Transpose a to RHS and simplify)

By substituting given c and d values inn the given equation and simplifying we get a=b. Hence, proved.

#SPJ2

Answer:

23%

Step-by-step explanation:

There are 52 cards in a deck… 12 of these are Face Cards (the J - Q - K of all four suits). The probability of getting one of these is therefore 12 out of 52 — or 12/52, which is 23%.

Answer:

46

Step-by-step explanation:

Answer:

26.1

Step-by-step explanation:

Took the same test lol

Given :

The combined height of one for tree and one Pine tree is 21 m.

The height of four for a tree stacked on top of each other is 24 m taller than one Pine tree.

To Find :

How tall are the types of trees that Logan genetically engineered.

Solution :

Let, height of tree and pine tree is x and y.

So, x + y = 21   ...1)

4x - y = 24   ...2)

Putting value of y from equation 1 to equation 2, we get :

4x - ( 21 - x ) = 24

5x = 45

x = 9 m

y = 21 - x = 21 - 9 = 12

y = 12 m

Therefore, length of tree and pine tree is 9 m and 12 m.

Answer:

false

Step-by-step explanation:

no solution

I did it on a graph and I think its true?

Answer:

80

Step-by-step explanation:

20 percent is 16 questions

then 100/20=5

5 times 16 is 80

Answer:

C

Step-by-step explanation:

Answer:

1.42

Step-by-step explanation:

1.3+6/50

1.3 +0.12

1.42

Answer:

1.42

Step-by-step explanation:

6/50 is .12

1.3+.12 is 1.42

Answer:  36?

It's too short. Write at least 20 characters to explain it well.



9514 1404 393

Answer:

  B

Step-by-step explanation:

If you remove the variables and the equal signs from the equations and put brackets around what is left, you have the matrix that represents the equations:

  [tex]\left[\begin{array}{ccc}3&-2&12\\4&-1&9\end{array}\right] \qquad\textbf{matches B}[/tex]

_____

Additional comment

You need to be sure the variables are in the same order in both equations, as they are here. If there are equations with missing variables, you need to use a zero (0) coefficient in the missing variable's location.

Answer:

3x = -2 2/5 or -2.4

Step-by-step explanation:

5x + 8 = 4

5x = 4 - 8

5x = -4

x = -4/5

3x = y  If x = -4/5

3 * -4/5 = y

-12/5 = y

-2 2/5 = y

Answer:

infinetly many

Step-by-step explanation:

-2+6y=6y-2

6y=6y

0=0

infinetly many

Hope this helps plz hit the crown :D

Answer:

Step-by-step explanation:

18 frime factorizarion is 2*3*3

because 18= 2 *9=2*3*3

Answer:

A=4 ft

Midline: y=14

Step-by-step explanation:

When talking about sinusoidal waves, we know the amplitude will be the distance between the midline and the highest or lowest point of the graph. This can be found by first, finding the distance between the lowest point and the highest point:

d= 18ft - 10ft = 8ft

and divide this distance into 2:

[tex]A=\frac{8}{2}[/tex]

A= 4 ft

in order to find the midline, we need to figure the midpoint between the highest and lowest value. We can do so by using the following formula:

[tex]Midpoint=\frac{high+low}{2}[/tex]

so:

[tex]Midpoint=\frac{18+10}{2}[/tex]

Midpoint = 14

so the midline is located at the line:

y=14

Answer: Depends on which side x is...

Step-by-step explanation:

This is my strategy for finding the values using ratios

Add the ratio together: 9 + 7 + 3 = 19

Divide the perimeter by the sum of the ratio: 266/19 = 14

Now we know what a unit of one is on the ratio: 14

Multiply this unit by the ratio amount

Side with ratio 9: 9 × 14 = 126 inches

Side with ratio 7: 7 × 14 = 98 inches

Side with ratio 3: 3 × 14 = 42 inches

Hope this helps?

Step-by-step explanation:

(2, 4), (4, 8) and (5, 10) are on the line y = 2x.

Hence they line on a straight line,

The line passes through the origin, and

it shows a proportional relationship.

Answer:

B.) The three points lie on a straight line.

C.) A line through the points passes through the origin.

 E.) The graph shows a proportional relationship.

Step-by-step explanation:

Answer:

the third option is the answer, y= 1/4x-1

Step-by-step explanation:

graph line in standard form:

[tex]y = mx + c[/tex]

where m = slope and c = y-intercept

1) find the slope

slope formula:

[tex] \frac{y2 - y1}{x2 - x1} [/tex]

use the two coordinates given in the graph

i/ (0,-1)

x1 = 0

y1 = -1

ii/ (4,0)

x2 = 4

y2 = 0

substitute the values into the formula

[tex] \frac{y2 - y1}{x2 - x1} [/tex]

[tex] \frac{0 - ( - 1)}{4 - 0} [/tex]

[tex] \frac{1}{4} [/tex]

thus, m = 1/4

2) find the y-intercept

* y-intercept is the value of y that cuts through the y-axis

based on the graph, the y-intercept is -1

thus, c = -1

3) substitute the value of m and c into the standard form formula

[tex]y = mx + c[/tex]

[tex]y = \frac{1}{4} x - 1[/tex]

Yes, SSS

PR are already a given side. PS and PQ are also given sides. Lastly, RS and RQ are given sides.

Answer:

x=8

Step-by-step explanation:

Given:

Consider the below figure attached with this question.

[tex]m\angle 3=(x+30)^\circ[/tex] and [tex]m\angle 4=(2x-80)^\circ[/tex].

To find:

The measure of angle 3.

Solution:

From the below figure it is clear that, angle 3 and angle 4 are vertically opposite angles.

We know that, vertically opposite angles are always equal. So,

[tex]m\angle 3=m\angle 4[/tex]

[tex](x+30)^\circ=(2x-80)^\circ[/tex]

[tex]x+30=2x-80[/tex]

[tex]x-2x=-30-80[/tex]

[tex]-x=-110[/tex]

[tex]x=110[/tex]

Now,

[tex]m\angle 3=(110+30)^\circ[/tex]

[tex]m\angle 3=140^\circ[/tex]

Therefore, the measure of angle 3 is 140 degrees.

Answer:

50÷20=2.5

12×2.5=30

so you can answer 30 questions in 12 minutes

i hope this helped

Step-by-step explanation:

Answer:

B (130°)

Step-by-step explanation:

Because the angles are adjacent that means:

m<ADE + m<CDA = m<CDE

Using this equation, we can find what m<ADE is:

m<ADE = m<CDE - m<CDA

m<ADE = 177° - 47°

m<ADE = 130° (B)

Hope this helps :)

Answer:

B

Step-by-step explanation:

CDE is 177, meaning it’s not a straight line so it’s 3 degrees from a perfect line so if CDA is 47 add the 3 degrees and see if CDE was a perfect line what answer would get you 180.

Answer:

4  sq 8

Step-by-step explanation:

The expression that could represent the length of one side of the square is; [tex]4x^2y^4[/tex].

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The Numbers constants, variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbol it can also be used to indicate the logical syntax's order of operations and other features.

Given that;

The area of the square A  = [tex]16x^4y^8[/tex]

Consider that a is the side length of the square

The area of the square is given by;

[tex]\Rightarrow A=(\text{side length})^2[/tex]

So, we can write the expression as;

[tex]\Rightarrow a^2=16x^4y^8\\\\\Rightarrow a=4x^2y^4[/tex]

Hence, the length of each side is 4x^2y^4

To know more about an expression follow;

brainly.com/question/19876186

#SPJ6

Answer:

√21/5

Step-by-step explanation:

Took the quiz:D (that’s a fraction btw)

Answer:

Yes. The legs are PQ for both triangles.

Step-by-step explanation:

PQ is congruent to PQ (itself) by the reflexive postulate. We can use this along with our congruent hypotenuses and the right angle to determine that these right triangles are congruent by HL.

I hope this helps!

Answer:

I checked it and the person above me is correct. Give em brainlyest! Your welcome other person

Step-by-step explanation:

Answer:

b: only graph b is a function

Step-by-step explanation:

if you look closely graph a is in the middle of the boxes and all over the place, so the answer has to be b. Your welcome (pls give brainliest)

Step-by-step explanation:

I'll call the boxes at the bottom 1 through 6 from left to right.

1. The lines intersect

Answer: 2, 6

2. The lines are parallel

Answer: 3, 4

3. There is only one line

Answer: 1, 5

Answer:

Answer is in attachment, other guys is confusing?

Step-by-step explanation:

The measure of minor arc eg  is 149 degrees

Given the following parameters

arcGF = 83 degrees

arcEF = 66 degrees

The measure of arcEG is expressed as:

arcEG = arcGF + arcEF
arcEG = 83 + 66

arcEG = 149degrees

Hence the measure of minor arc eg  is 149 degrees

Learn more on angles here: https://brainly.com/question/25770607

Answer: 149

Step-by-step explanation: edge 2023