Step-by-step explanation:
f(x) = x² + 2x - 2f(-2) = (-2)² + 2 (-2) - 2 = 4 - 4 - 2 = - 2Hope it will help :)
Answer:
-2
Step-by-step explanation:
Substitue -2 into every x factor
-2^2 + (-4) - 2
4 - 4 - 2
-2
Simplify Rewrite the expression in the form x ^ n X^ 2 * x ^ - 12 =
Step-by-step explanation:
Given
[tex] = {x}^{2} \times {x}^{ - 12 } \\ = {x}^{2 - 12} \\ = {x}^{ - 10} [/tex]
Hope it will help :)
Answer:
x^-10
Hope this helps ( :
Describe how an electromagnetic wave carries energy from place to place. Your description should
include the terms electric field, magnetic field, and perpendicular.
Answer: Also according to Faraday's law of electromagnetic induction, changing magnetic field will create an electric field perpendicular to it's direction.
... That is why in an electromagnetic wave, electric and magnetic fields promote each other in directions perpendicular to themselves.
So they are perpendicular
Step-by-step explanation:
hope it helps please mark as brainliest tyy <3
Answer:
[tex]electromagnetic \: (electric \: field + magnetic \: field) \: wave \: \\ (always \: transverse :i.e \: perpendicular \: to \: the \: direction \: of \: motion \: or \: disturbance) \\ [/tex]
Step-by-step explanation:
[tex]electromagnetic \: wave \: is \ a\: transverse \: wave: \\ i.e \: it's \: vibrational \: direction \: is \: always \: \\ perpendicular \: to \: the \: direction \: of \: the \: \\ wave. \\ Electromagnetic \: wave\:or \: disturbance \: is\: \\ made \: of \: two \: fields : \\ (electric \: field \: and \: magnetic \: field) [/tex]
Find the slope of the line that passes through these two points: (-2,-2) and (1,2).
Answer:
Step-by-step explanation:
(2 + 2)/(1 + 2)= 4/3
do
5 cm
5 cm
5 cm
form a triangle ?
Answer:
Yes it does it forms a right triangle.
Step-by-step explanation:
find the equation of the line containing the points shown
Answer:
y= 6x - 22
Step-by-step explanation:
(4,2) and (5,8)
m= (y2-y1)/(x2-x1)
m= (8-2)/(5-4)
m= 6
y-y1= m(x-x1)
y-2= 6(x-4)
y-2= 6x-24
y= 6x - 22
Mark brainliest pls!
PLEASE ANSWER THIS ALSO!!!
Answer:
Option A & B
Step-by-step explanation:
Total cost of the flat = Rs. 4.25 lakh
Amount already paid = Rs. 2.5 lakh
Remaining amount to be paid =
4.25 - 2.5 = 1.75 lakhs or 1,75,000
hey if you need help with math comment here. If you need points I will give away just follow this tiktak = noodlesdelic
and like the videos
Step-by-step explanation:
nope I do not but tnks for the free point
If 4x- 7 = 2x, then 2x = ?
If [tex]4x-7=2x[/tex], then [tex]2x=7[/tex].
Hope this helps.
Answer:
7
Step-by-step explanation:
We solve for x first.
So: 4x - 7 = 2x
Subtract 2x from both sides: 4x - 2x - 7 = 2x - 2x
2x - 7 = 0
Add 7 to both sides: 2x - 7 + 7 = 0 + 7
2x = 7
Divide by 2: [tex]\frac{2x}{2}[/tex] = [tex]\frac{7}{2}[/tex]
x = [tex]\frac{7}{2}[/tex]
Now, we substitute x for [tex]\frac{7}{2}[/tex] like this:
2 ( [tex]\frac{7}{2}[/tex]) = 7
Plato algebra 2 approximating solutions help please asap
Answer:
Option B. x = 1 and x ≈ 4.2
Step-by-step explanation:
From the question given above, we can see that the graph represents two equation i.e a quadratic and a linear equation.
The solution of such graph as given in the question above can be obtained by simply taking the values of where both equation intercept on the x–axis.
From the graph, the two equation intercept at 1 and 4.2 on the x–axis.
Therefore, the solutions to the equation are:
x = 1 and x ≈ 4.2
A party mix is made by adding nuts that sell for $2.50 per kg to a cereal mixture that sells for $1 per kg. How much of each should be added to obtain 40 kg if a mix that will sell for $1.30 per kg?
Answer:
40kg
Step-by-step explanation:
x + y = 60, y = 60 - x
x(2.50) + y(1) = 60(1.50)
Substitute:
2.50 x + 60 - x = 90
1.50x = 30
x = 20 kg
y = 40 kg
If the mean of 5, 11, 6, 4, 7, P and 10 is 8, find the value of (P)
Answer:
(p+5+11+6+4+7+10)/7=8
Step-by-step explanation:
p+43/7=8
p+43=8*7
p+43=56
p=56-43
p=13
Question 3
A man earns $3580 per month and spends 65% of it. How many does he save
every month?
$2327
$2237
$1523
$1253
Other:
Answer:
$1253
Step-by-step explanation:
65% of $3580=$2327 spent
$3580-$2327=$1253 saved
Answer:
1253.
Step-by-step explanation:
65% of 3580 is 2327.
3580-2327=1253.
Convert 7/11 to a percent. Round the answer to the nearest hundredth.
Answer:
Step-by-step explanation:
7/11 as a percent is 63.64% rounded to the nearest hundredth. 7÷11*100=63.64
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Answer:
x = 20, y = 50
Step-by-step explanation:
x is 20 and y is 50.
Please give me brainliest.
a. (-8) * 43 =
b. (-8) * (- 35) =
c. - 213 =
d. 21−3 =
e. −21−3 =
Answer:
A. -334
B. 280
C. -221
D. 18
E. -24
Step-by-step explanation:
Hope this helps
Fraction way:
8 4/3
-8/-35
-2/13
21/3
-21/3
The base of a parallelogram is 1.4 feet long and the height is 0.32feet. What is the area of the parallelogram
Step-by-step explanation:
In a parallelogram
base (b) = 1.4 feet
height (h) = 0.32 feet
Now
Area of the parallelogram
= b * h
= 1.4 * 0.32
= 0.448 feet²
Hope it will help :)
Keisha found three pieces of cable in her tool drawer. Here are their lengths (in meters).
4.9, 10, 14.94
What is the total length of the three pieces?
Answer:
29.84
Step-by-step explanation:
4.9+10+14.94
4.9+10=14.9
14.9+14.94=29.84
Please give the right answer and show work if possible
Answer:
Height: 6.7 Length: 22
Step-by-step explanation:
Use Soh (sin(angle)=[tex]\frac{opposite}{hypotenuse}[/tex]) Cah (cos(angle)=[tex]\frac{adjacent}{hypotenuse}[/tex]) Toa (tan(angle)=[tex]\frac{opposite}{adjacent}[/tex])
Height:
You'd use sin so the equation is sin17=x/23 which is equal to (rounded) 6.7
Length:
You'd use cos so the equation is cos17=y/23 which is equal to (rounded) 22
*You always need to use a calculator when using sin, cos, and tan*
*SohCahToa is an easy way to remember the equations!*
Hope this helped!
try to graph y=0.4 x
Answer: y = 0.4x in desmos
Step-by-step explanation:
Answer:
Not applicable.
Step-by-step explanation:
You could use Desmos as another person answered. However, if you are graphing by hand, simply choose two points and draw a straight line between them.
For example, you could pick x = 0 and x = 1. This gives you the two points (0, 0) and (1, 0.4)
Plot those two points and use a straight edge to draw a line between the two.
In case you are having trouble plotting (1, 0.4) since it is a decimal, try setting x = 5, you will get (5, 2) which should be much easier to graph.
find the values of x and y
Answer:
x = 60 and y = 60
Step-by-step explanation:
Those are all equilateral triangles with the same angles.
The graph shows the relationship between a sphere's radius and volume.
Select all the statements that are true about the relationship.
Group of answer choices
If the radius doubles, the volume doubles.
If the radius doubles, the volume becomes about 4 times bigger.
If the radius doubles, the volume becomes about 8 times bigger
The relationship is linear.
The relationships is not linear.
Answer:
C and D
Step-by-step explanation:
Answer:
C and e
Step-by-step explanation:
Is this triangle congruent? If so, list the congruent parts and justify your answer. Then state the criteria.
Answer:
Step-by-step explanation:
IN TRIANGLE ADB AND CDB
1 . < ADB = < DBC ( BEING ALTERNATE ANGLE )
2 . DB = DB ( COMMON SIDE )
3. <ABD = <BDC ( BEING ALTERNATE ANGLE )
4. △CDB ≅ΔADB ( BY ASA AXIOM )
PROVED ..
pls help lol i will mark brainliest or something
Answer:Option 4
Step-by-step explanation:
Answer:
Option 4
Step-by-step explanation:
24 x 2 - (8+ [tex]4^{2}[/tex]) / 8 - 6
24 x 2 - (8 + 16) / 8 - 6
24 x 2 - 24 / 8 - 6
48 - 24 / 8 - 6
48 - 3 - 6
45 - 6
39
Which of the following illustrates how to find the difference of 4h^5k and -7hk^5
(4-7) h^5k
Not possible
(4+7) h^5 k^5
(4+7) h^5-1 k^1-5
Answer:
Not possible
Step-by-step explanation:
Which of the following illustrates how to find the difference of 4h^5k and -7hk^5
Takig the difference
4h^5k - (-7hk^5)
= 4h^5k +7hk^5
Collect the like terms
= hk(4h^4+7k^5)
Hence the difference is not possible
first derivative of b/x
Answer:
[tex]\frac{dy}{dx} = -\frac{b}{x^2}[/tex]
Step-by-step explanation:
Given
[tex]\frac{b}{x}[/tex]
Required
Determine the first derivative
Rewrite the expression as:
[tex]y =\frac{b}{x}[/tex]
Apply law of indices
[tex]y =bx^{-1}[/tex]
An equation with the form
[tex]y = ax^n[/tex]
has the derivative:
[tex]\frac{dy}{dx} = nax^{n-1}[/tex]
So, the derivative of [tex]y =bx^{-1}[/tex] is
[tex]\frac{dy}{dx} = -1 * bx^{-1-1}[/tex]
[tex]\frac{dy}{dx} = -bx^{-2}[/tex]
[tex]\frac{dy}{dx} = -\frac{b}{x^2}[/tex]
Help me please text me I have four problems in math that need to have work show. It’s due by 12am and I will text back the second you do
Elizabeth has $72 to spend on painting supplies needed to repaint her house. Rollers
cost $4 each, and paintbrushes are $3 each. She needs at least 15 rollers and
paintbrushes combined and wants at least five of each.
Find the measure of the indicated angle to the nearest degree
the directions are : The table shows a proportional relationship between x and y. What is the unit rate of y per x.
Answer:
4
Step-by-step explanation:
To find the unit rate you can pick any row and do y divided by x
For example, x = 3 and y = 12 so you can do 12 / 3 = 4.
You could also use x = 5 and y = 20, so it would be 20 / 5 = 5
How much time will it take two builders build a shed if they are working together as a team?
If you know it takes the most experience builder JOSE twenty-five minutes to make it by himself,
and it takes the newer builder Byron 40 minutes to build it alone.
Use this template to help you write your equation:
where: time=1
Time + Time
25 40