Answer:
13
Step-by-step explanation:
Replace the variable x with -2 in the expression.
f (-2) = -3 x -2 -2
Simplify (-3 x -2 -2) + 9
Multiply -3 by -2
6 - 2 + 9
Subtract 2 from 6
4 + 9
add 4 and 9
13.
The required simplified value of the function [tex]f(-2) + 9[/tex] as is 13.
Given that,
f(x) = -3x - 2
To determine
[tex]f(-2) + 9[/tex]
The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
Given function f(x) = -3x - 2
Put x = -2 and add the function with 9
= [tex]f(-2) + 9[/tex]
= -3(-2) -2 + 9
= 6 - 2 + 9
= 13
Thus, the required simplified value of the function as [tex]f(-2) + 9[/tex] is 13.
Learn more about simplification here: https://brainly.com/question/12501526
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Simplify. (12)2−6(2−23) Enter your answer, as a simplified fraction, in the box.
Answer: 240
Step-by-step explanation:
Distribute all numbers
24 - 6(-21)
24 - (-126)
24+216
240
7(5)^2 - 17
How do you solve
Answer:
7•(5•5) -17 = 7•25-17= 175-17= 158
Alden has a gift card for a local garden store. She uses the gift card to rent a tiller for 5 days. It cost $59 per day to rent the tiller. She also buys a rake for $3 l. By how much did her gift card decrease by
Answer:
90 the answer is 90
Answer:
$250
Step-by-step explanation:
We can make a pretty simple equation to help us solve this. If the tiller costs $59 for each day and she uses it for 5 days, the first step of our equation would be (59 x 5). Then she buys a rake for 3 dollars, that is adding to the equation
(59 x 5) + 3
Fist solve what is inside the parentheses. 59 x 5 = 250
250 + 3 = 250
500 deposit over 20 years with an interest rate of 5%
Answer:
At the end of 20 years, your savings will have grown to $1,326.
You will have earned in $826 in interest.
Step-by-step explanation:
Meghan Trainor spent $180 to start a dog walking business and earns $80 for each dog she walks Nicki Minaj didn't spend anything to start her business and already has $160 saved up Nicki Minaj and $6 for each dog she walks how many dogs would they each have to walk before they have the same amount of money
Answer:
Nicki will have to walk 13 dogs to get the same amount of money as Meghan
Pls mark me brainliest.
123453737372×69943773884=
Answer:
wow I got a big E and am sooo happy to get 5 marks
Answer:
8,634,820,291,881,888,392,848
Step-by-step explanation:
123453737372×69943773884 = 8,634,820,291,881,888,392,848
Many calculators don't keep the required number of digits.
Find an equation for the vertical line through the point (6, -6).
Answer:
x=6
Step-by-step explanation:
Since the line is vertical, it has no slope. This means that it will only go through points that have an x-coordinate of 6.
what’s the sequence for “S,M,T,W.... What’s the next three terms ?
Answer:
R F S
Step-by-step explanation:
These are the days of the week.
Sunday, Monday, Tuesday, Wednesday, Thursday, Saturday, Sunday
The number 28 is 4 times as many as 7. Write this comparison as a multoplication equation
Answer:
4 x 7
Hope this helps pla mark brainliest : )
The mathematical expression will be;
⇒ 28 = 4 × 7
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The algebraic expression is,
''The number 28 is 4 times as many as 7''
Now,
Since, The algebraic expression is,
''The number 28 is 4 times as many as 7''
Hence, We can formulate;
⇒ 28 = 4 × 7
Thus, The The mathematical expression is find as;
⇒ 28 = 4 × 7
Learn more about the mathematical expression visit:
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Evaluate the following expression:
[9 (10 – 2)] = [2 + (5 x 2)]
Answer:
6
Step-by-step explanation:
My snack time calls for 1/2 cup raisins,2/3 cup of nuts and 1/4 cup of chocolate chips what is the combined total
Answer:
[tex]\frac{17}{12}[/tex] or [tex]1\frac{5}{12}[/tex] (they're the same)
Step-by-step explanation:
1/2 + 2/3 + 1/4 = 12/24 + 16/24 + 6/2412/24 + 16/24 + 6/24 = 34/2434/24 = 17/12 = 1 5/12I hope this helps!
tell me ratios simplest forms
F(x) = 1/3(4-x)2 what is the value of f (16)
Answer:
-8
Step-by-step explanation:
Which expression is equivalent to (3x-1) (-5x+6)?
Answer:
−15x2+23x−6
Step-by-step explanation:
(3x−1)(−5x+6)
=(3x+−1)(−5x+6)
=(3x)(−5x)+(3x)(6)+(−1)(−5x)+(−1)(6)
=−15x2+18x+5x−6
=−15x2+23x−6
1) -13(-6x- 14) = -910 solve
Answer:
x=2
Step-by-step explanation:
HELPPPP! PLEASE EXPLAIN!!!
What do you call moving digits around to a different place when you count up or down past 9?
regrouping.
borrowing.
trading.
all of the above.
Moving digits around to a different place when counting up or down past 9 is called regrouping, borrowing, or trading.
There are several terms for moving digits around, some of them are:
RegroupingCarryingBorrowingTradingAll the above mean the same thing, and they perform the same purpose.
For instance:
Counting from 19 to 20 involves borrowing/carrying/trading/regrouping of 1
Hence, the correct option is (d) all of the above
Read more about regrouping at:
https://brainly.com/question/23796432
Suppose tan(x) = Two-thirds, and the terminal side of x is located in quadrant I. What is sin(x)?
Answer:
sin(x) = 2/√13
Step-by-step explanation:
In the first quadrant , all the trig identity (sin, cos and tan) are all positive.
Given tan(x) = 2/3
According to TOA, tan(x) = opposite/adjacent = 2/3
opposite = 2
adjacent = 3
Using pythagoras theorem to get the hypotenuse;
Hyp² = opp²+adj²
Hyp² = 2²+3²
Hyp² = 4+9
Hyp² = 13
Hyp = √13
According to SOH, sin(x) = opp/hyp
sin(x) = 2/√13
The credit remaining on a phone card (in dollars) is a linear function of the total calling time made with the card (in minutes). The remaining credit after 32 minutes of calls is $21.16, and the remaining credit after 56 minutes of calls is $18.28. What is the remaining credit after 72 minutes of calls?
Answer:
The credit remaining on a phone card is 16.36 dollars
Step-by-step explanation:
A linear function is a polynomial function of the first degree of the form:
f (x) = m * x + b or y = m * x + b
where m is the slope of the linear function and b is the ordinate to the origin and it is the coefficient of the independent variable.
Given the coordinates of two points (x1, y1) and (x2, y2), you can determine the slope of the linear function using the following formula:
[tex]m=\frac{y2-y1}{x2-x1}[/tex]
The coefficient b is calculated simply by replacing any of the points in the linear function, knowing m, and isolating the value.
In this case you want the linear function first:
credit remaining on a phone card= m* the calling time in minutes + b
Being the points (32; 21.16) and (56;18.28), then the slope m will be:
[tex]m=\frac{18.28-21.16}{56-32}[/tex]
m= -0.12
Then, replacing the point (32; 21.16) in
credit remaining on a phone card= -0.12* the calling time in minutes + b
you get:
21.16= -0.12*32 + b → 21.16= -3.84 + b → 21.16 + 3.84= b → 25=b
Then, replacing the point (56;18.28) in
credit remaining on a phone card= -0.12* the calling time in minutes + b
you get:
18.28= -0.12*56 + b → 18.28= -6.72 + b → 18.28 + 6.72= b → 25=b
You can see that the value of b is the same.
So the linear function is:
credit remaining on a phone card= -0.12* the calling time in minutes + 25
Being the call time in minutes equal to 72, you replace this value in the linear function:
credit remaining on a phone card= -0.12* 72+ 25
and you get:
credit remaining on a phone card= -8.64+ 25
credit remaining on a phone card= 16.36
The credit remaining on a phone card is 16.36 dollars
Will vote brainliest!!!!!!!! Thank you!!!!!!!!!!!!
0
Step-by-step explanation:
all the ways you could do it so it would be 0
x-4y+5z=0,x+z-3y=0
6x-y+4z=0,x-7y+z=0
(Please help ASAP!!)
Twice a number increased by 5 is equal to 16 less than 9 times the number. Find the number.
HURRY DUE IN 20 MINUTES Use the rules of exponents to simplify the expressions. Match the expression with its equivalent value.
Answer:
1 = A
2= D
3= B
4= C
solve screen shot attachment EASY
Answer:
[tex]x = \frac{-3d-9}{k-d}[/tex]
Step-by-step explanation:
Step 1: Write out equation
d(-3 + x) = kx + 9
Step 2: Distribute d
-3d + dx = kx + 9
Step 3: Subtract 9 on both sides
-3d + dx - 9 = kx
Step 4: Subtract dx on both sides
-3d - 9 = kx - dx
Step 5: Factor out x
-3d - 9 = x(k - d)
Step 6: Divide both sides by k - d
[tex]x = \frac{-3d-9}{k-d}[/tex]
Find 5/6 of 15. Express your answer in simplest form.
Answer:
I would say 95/6 because you multiply 5 and 15 and turn it into an improper fractions.
Step-by-step explanation:
Answer
25/2 or 12 and 1/2
Step-by-step explanation:
a bus is traveling at a constant speed if the bus travels 15 1/2 miles in 1/3 of an hour how many miles will the bus travel in one hour
Answer:93/2 or 46 1/2
Step-by-step explanation:
15 1/2 ✖️3
can I get an answer please
Answer: 1, 4, -7
Step-by-step explanation:
Coefficients are numbers that are in front of a variable. Let's first determine the terms that have variables in them.
z, 4z², -7a
Since these all have variables in the terms, we know the coefficients are 1, 4, -7.
Part D: Write an equation that would represent the
number of seconds it took the skydiver to reach a
height of 400 meters and use the equation to solve for
that time.
Part E: What is an appropriate domain for the
situation
A 0
B. 0
C. Sy s 44.7
DO Sy 5 760
Answer:
The answer is below
Step-by-step explanation:
The question is not complete, the complete question is:
A skydiver is 760 meters above the ground when he opens his parachute. After opening the parachute, he descends at a constant speed of 17 meters per second.
a) A function gives a relationship between two variables (an independent and dependent variable). The dependent variable is dependent on other variables (output) while the independent variable is not dependent on other variables (input).
Let x be the number of seconds after the parachute is opened and y be the height of the parachute above the ground. Hence the equation that models the situation is:
y = 760 - 17x
At a height of 400 m, the number of seconds is:
y = 760 - 17x
400 = 760 - 17x
17x = 760 - 400
17x = 360
x = 21.2
x ≅ 21 seconds
It takes 21 seconds to reach a height of 400 m
b) Domain is the set of all independent variables. In this case the independent variable is the time (x)
The minimum time is at y = 760
y= 760 - 17x
760 = 760 - 17x
17x = 0
x = 0
The maximum time is at y = 0
y= 760 - 17x
0 = 760 - 17x
17x = 760
x = 44.7
Hence the domain = 0 ≤ x ≤ 44.7
Which equation gives the line shown on the graph?
y
y=2.0 +4
10
9
y= {x + 4
8
7
6
y=-3x – 4
5
y = 23 – 4
3
2.
1
0
0
1 2
3 4 5 6 7 8 9 10
need help
Answer:
y=(1/2)x+4
(0,4) and (10,9) both satisfy this equation.
Hope it helps:-)
How do you do this I don’t know how to do the triangle.
Answer:
I think the answer is 36
Step-by-step explanation:
I reduced 20in and I got 15inches
then as we know perimeter is the distance right round the shape so I add 15, 9 and 12 and I got 36
Complete a table with at least 5 points then graph the following quadratic on the coordinate plane. Identify all zeros.y = -2x2 + 5x + 8
Answer:
See attached
Step-by-step explanation:
Given function:
y = -2x² + 5x + 8Table and graph are attached
Zeros are included in the graph
Zero's are obtained:
x = 0 ⇒ y = 8
y = 0 ⇒ Solving quadratic equation
-2x² + 5x + 8 = 0x = (-5 ± √(25 + 2*4*8))/-4x = 3.608x = -1.108So zeros are (0, 8), (3.608, 0) and (-1.108, 0)
