Answer:
f(-5)=-(-5)^2 - 10(-5) = 25
Step-by-step explanation:
The value of f(-5) is 25 when x = -5
What are Arithmetic operations?Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions. The operator that performs the arithmetic operation is called the arithmetic operator.
Operators which let do a basic mathematical calculation
+ Addition operation: Adds values on either side of the operator.
For example 12 + 2 = 14
- Subtraction operation: Subtracts the right-hand operand from the left-hand operand.
for example 12 -2 = 10
* Multiplication operation: Multiplies values on either side of the operator
For example 12*2 = 24
Given that
⇒ f(x) = -x² – 10x
To determine the value of f(-5)
Substitute the value x = -5
⇒f(-5 ) = -(-5)² - 10(-5)
⇒f(-5 ) = 25
Hence, the value of f(-5) is 25 when x = -5
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Helllpppp meeeee plsssssss
Answer:
The inequality [tex]\frac{8}{4}\:<\frac{5}{2}\:[/tex] is true.
Step-by-step explanation:
Given
[tex]\frac{8}{5}<\frac{9}{10}[/tex]
FALSE
Reason: 8/5 or 1.6 is greater than 9/10 or 0.9
[tex]1>\frac{6}{5}[/tex]
FALSE
Reason: 1 is smaller than 6/5 or (1.1)
[tex]\frac{5}{2}<2\frac{1}{2}[/tex]
converting mixed number to improper fraction
[tex]\frac{5}{2}<\frac{5}{2}[/tex]
FALSE
Reason: 5/2 can not be less than 5/2
[tex]\frac{8}{4}\:<\frac{5}{2}\:[/tex]
[tex]2<\frac{5}{2}[/tex]
TRUE
Reason: 2 is indeed smaller than 5/2 or 5.2 ∵ 5/2 = 2.5
Therefore, inequality [tex]\frac{8}{4}\:<\frac{5}{2}\:[/tex] is true.
if there are 200 questions and 4 marks for correct answers and -1 for incorrect answer and total marks is 250then what is the number of correct answers
The number of questions answered correctly = 90.
What is a system of linear equations?A system of linear equations is a set of two or more linear equations. Linear equations refer to the equations that involve two or more variables in the form of "ax + b".Now,
Given:
Total number of questions = 200Marks for correct answer = 4Marks for incorrect answer = -1Total marks = 250To find : Number of correct answers = ?
Finding:
Now, assuming that the student attempted and answered all the questions,
Let the number of questions correctly answered be x and incorrectly answered be y.Then,
x + y = 200 (For number of questions) (eqn 1)and 4x - y = 250 (For the marks scored) (eqn 2)Solving the system of linear equations:
For eqn 2, we get that y = 4x - 250
Substituting in eqn 1, we get:
=> x + 4x - 250 = 200
=> 5x = 250 + 200 = 450
=> x = 90
That is, the number of questions answered correctly = 90, the incorrect answers = 200 - 90 = 110.
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Simplify each expression
1. -7(6v+4)+3v(v+3)
2. -3k(2k-3)+7(k-7)
Answer:
1. 3v^2 - 33v -28
2. -6k^2 + 16k - 49
Step-by-step explanation:
1. (-7 x 6v) + (-7 x 4) + (3v x 1v) + (3v x 3)
-42v-28+3v^2+9v
3v^2 + 9v - 42v -28
3v^2 - 33v -28
2. (-3k x 2k) + (-3k x -3) + (7 x 1k) + (7 x -7)
-6k^2+9k+7k-49
-6k^2 + 16k -49
Solve: |11x + 10| = 22
To solve the equation |11x + 10| = 22, we need to consider two cases: one where the expression inside the absolute value is positive and one where it is negative.
Case 1: (11x + 10) is positive:
In this case, the equation becomes 11x + 10 = 22. Solving for x, we subtract 10 from both sides, resulting in 11x = 12. Dividing by 11 gives x = 12/11.
Case 2: (11x + 10) is negative:
Here, the equation becomes -(11x + 10) = 22. Simplifying, we have -11x - 10 = 22. Adding 10 to both sides gives -11x = 32. Dividing by -11 yields x = -32/11.
Thus, the solution set for the given equation is x = 12/11 and x = -32/11, representing the two possible values of x that satisfy the equation |11x + 10| = 22.
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I need help!!
Describe the graph of the following function, including where it is shaded? My test ends in 9 minutes
Answer:
Go to desmos!!!
Step-by-step explanation:
the sum of three numbers is 87. the second number is 2 times the third. the first number is 5 less than the third. what are the numbers?
The required numbers are 18,46 and 23.
This problem requires the idea of linear equation of 1 variable.
To clear up the linear equation we also need to recognize the BODMAS policies and the way to solve algebraic equations.
in this query the sum of the 3 numbers is 87.
let us count on that the third variable be x.
the second one variable is 2x.
The first variable is (x-5).
Now according to the question,
[tex](x-5)+2x+x=87[/tex]
⇒ [tex]4x-5=87[/tex]
⇒ [tex]4x=87+5[/tex]
⇒[tex]4x=92[/tex]
⇒ [tex]x=\frac{92}{4}[/tex]
∴ x=23
So, the third number is 23.
The second number is 2x i.e., 46.
The first number is (x-5) i.e., 18.
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Which calculation and answer show how to convert 5/16 to a decimal
Answer:
0.3125
Step-by-step explanation:
There are two different methods:
make an equivalent fraction with the denominator as a power of
10
. This can be
10
,
100
,
1
,
000
,
10
,
000
,
100
,
000
and so on...
5
16
×
625
625
=
3125
10000
Once the denominator is a power of
10
, the number of zeroes indicates how many decimal places there will be.
3125
10000
=
0.3125
←
4
decimal places
This method only works if the denominator is a factor of one of the powers of
10
divide the numerator by the denominator
5
16
=
5
÷
16
=
0.3125
-g00gle I copied and pasted so might look weird
If you deposit $7500 into an account paying 7% annual interest compounded monthly, how
much money will be in the account after 9 years?
A hoverboard is on sale for 10% off the original price of 247.50
Answer:
$222.75
Step-by-step explanation:
0.9*247.50
hope this helps :D pls mark brainliest :D
Find the exact length of the third side.
60
48
I’m stuck in this helppp
Luis rides his bicycle 3/4 miles in 15 minutes along the bike trial. Assuming he rides at a constant rate, what is his speed? in miles per hour?
Answer:
3 miles per hour
Step-by-step explanation:
The product of 2 and the sum of 9 and -6, subtracted by 5, equals what number
Answer:
1
Step-by-step explanation:
9 + (-6) = 3
2(3) = 6
6 - 5 = 1
Answer:
https://brainly.com/question/20245806
Step-by-step explanation:
Go to the link (you can just press it lol)
Find the measure of each missing angle.
Answer:
Angles 1 and the angle provided (88°) are supplementary meaning their angles with total 180°. Therefore m<1 +88=180
m<1=92
We can see that by the arrow on the 2 lines that they are parralel and paralel lines form congruent angles. Therefore, the m<64 will equal that of 3
m<3=64
Now, that we have the m<1 and the m<3 we know that the m<2 is 24
This is because the measure of the interior angles of any triangle add up to 180.
92+64+m<2=180
156+m<2=180
m<2=24
Now, we see that the m<3+m<4+81 will total 180°. the m<3 is 64 so:
64+81+m<4=180
145+m<4=180
m<4=35
Now, by using the rule that the measure of the interior angles of any triangle add up to 180 we see that the m<4+m<5+64=180
m<4=35
35+64+m<5=180
99+m<5=180
m<5=81
Step-by-step explanation:
Doctor Forrest charges $60 for a home visit plus an additional fee of $12.50 per hour spent with the patient. Doctor Forrest arrives at a patient’s home at 9:30 am. The total bill for the visit was $97.50. What time did the doctor leave the patient's home?
Answer:
We do not know
Step-by-step explanation:
There is no time when the doctor starts from home, so it is technically impossible to solve.
raise v to the 2nd power, then subtract w
Answer: v^2 - w
Step-by-step explanation: any specific numbers that need to be plugged in?
What is the equation, in point-slope form, for a line that goes through (2, -6) and has
a slope of 3/5
A. y - 6 = 3/5 (x + 2)
B. y - 2 = 3/5 (x + 6)
C. y+2 = 3/5 (x – 6)
D. y+6= 3/5 (x - 2)
You need a 40% alcohol solution. On hand, you have a 520 mL of a 70% alcohol mixture. How much pure water will you need to add to obtain the desired solution?
The 390 ml of pure water will you need to add to obtain the desired solution.
It is required to find how much pure water will you need to add to obtain the desired solution.
What is percentage?A part of a whole expressed in hundredths a high percentage of students attended. Also the result obtained by multiplying a number by a percent the percentage equals the rate times the base.
Given:
You know that the current solution is 70% alcohol, so the amount of alcohol present is 70% of 520 = 364
Let x be the amount of water to add. Then the new total amount would be 520 + x. To arrive at a solution that is 40% alcohol, you would want the amount of alcohol to be 40% of the new total.
So...
364 = .40 * (520 + x)
By simplify we get,
364=208+0.40x
364-208=0.40x
156=0.40x
x=390 ml
we must add 390 ml of water to get the 40% solution.
Therefore, the 390 ml of pure water will you need to add to obtain the desired solution.
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Complete the pattern in the multiplication table
PLEASEEEE HELPPPPP !!!!!!! I will mark Brianliest !!!!!!!!!!!!!!!!
Answer: what are you looking for
Step-by-step explanation:
Answer: m<QRT = m<SRT
Find the explicit formula 13,11,9,7
-2 pattern
13-2=11-2=9 and so on
HELP NOW 50 POINTS!
Given the system below, SELECT all terms that will be
eliminated by adding the equations together.
-X + y = -1
2x - y = 0
-x
2x
y
-y
-1
0
-x
2x
-1
0
Step-by-step explanation:
sorry I don't understand but have you tired go-oo?
The diameter of a circle is 26 inches. What is the circle's area?
Answer:
around 530
Step-by-step explanation:
26/2 = 13
A = pi × 13^2
Let x= t+2 and y= t² Write an equation for y in terms of only X
Answer:
[tex] y = {x}^{2} - 4x + 4[ /tex]
Step-by-step explanation:
[tex] x = t + 2 \\
\implies \: x - 2 = t....(1) \\
y = {t}^{2} ....(2) \\
plug \: t = x - 2 \: in \: equation \: (2) \\
y = {(x - 2)}^{2} \\
\red{ \bold{ y = {x}^{2} - 4x + 4}}[/tex]
I need help with this rate of change problem
Answer:
-0.5 (-1/2)
Step-by-step explanation:
Answer:
m= -1/2
Step-by-step explanation:
Slope formula
m= y2-y1/x2-x1
plug the given points in which are (7,-4) (5,-3)
m= -3-(-4)/ 5-7
m= 1/-2 which can be rewritten as -1/2
franklin is thinking of two numbers. the sum of the two numbers is 40.the first number x, is 11 less than twice the second number, y. which system of equations can be used to find the two numbers? A) xy=40, x=2y-11 B) x+y=40, x=11-2y C) x-y=40, x=11-y D)x+y=40, x=2y-11
Answer: d) x+y =40
x=2y -11
Step-by-step explanation:
A poll was taken to total the candy collected by a few students who went trick or treating on Halloween. Determine the ratio that compares the number of
candy bars to the total pieces of candy.
Halloween Number of
Candy Pieces
Lollipops 10
Gumballs 15
Candy Bars
5
Chocolate 10
1:6
1:5
01:4
0 1:8
What's 2|–9| – |–2|?
Question 7 options:
A)
–18
B)
20
C)
16
D)
–20
Answer: C) 16
Step-by-step explanation:
= 2(9) - 2
= 18 - 2
= 16
Answer:
16, C
Step-by-step explanation:
|-9| is 9
|-2| is 2
2*9 - 2
18-2
16
simple math monomial problem, 20 points worth, WILL MARK BRAINLIEST.
QUESTION IS ATTATCHED.
Answer:
1
Step-by-step explanation:
You really just need a calculator for this but to solve by hand just simply separate all the variables and coefficients and then multiply them together at the end.
[tex]-9x^5y^2[/tex]
Since x = -1
[tex]-1^5[/tex] = [tex]-1*-1*-1*-1*-1[/tex] = -1
[tex]\frac{1}{3}^2= \frac{1}{3}*\frac{1}{3}=\frac{1}{9\\}[/tex]
[tex]-9*-1*\frac{1}{9}=1[/tex]
Which expression is equivalent to 2(14x-3y+28x+12.2-5y-17.5)?
A.84x-16y-10.6
B.28x-6y-10.6
C.42x-8y-5.3
D.84x-16y-5.3
Answer:
a
Step-by-step explanation:
Equivalent expressions are expressions with equal values
The equivalent expression of 2(14x-3y+28x+12.2-5y-17.5) is 84x-16y-10.6
The expression is given as:
2(14x-3y+28x+12.2-5y-17.5)
Collect like terms
2(14x-3y+28x+12.2-5y-17.5) = 2(14x+28x-3y-5y+12.2-17.5)
Evaluate the like terms
2(14x-3y+28x+12.2-5y-17.5) = 2(42x-8y-5.3)
Open the bracket
2(14x-3y+28x+12.2-5y-17.5) = 84x-16y-10.6
Hence, the equivalent expression of 2(14x-3y+28x+12.2-5y-17.5) is 84x-16y-10.6
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#3: The Hansen family bought 2 child and 2 adult movie tickets and paid $36.50. The Owens family bought 5 child and 2 adult tickets and paid $60.50. How much does a child movie ticket cost? *
Answer:
Cost of child movie = x = $8
Cost of adult movie = y = $10.25
Step-by-step explanation:
Let cost of child movie = x
Cost of adult movie = y
Now converting statements into mathematical expressions:
Hansen family bought 2 child and 2 adult movie tickets and paid $36.50.
[tex]2x+2y=36.50[/tex]
Owens family bought 5 child and 2 adult tickets and paid $60.50. [tex]5x+2y=60.50[/tex]
Let:
[tex]2x+2y=36.50--eq(1)\\5x+2y=60.50--eq(2)[/tex]
Subtract both equations:
[tex]2x+2y=36.50\\5x+2y=60.50\\- \:\:\: - \:\:\:\:\:\:\:\: -\\--------\\-3x=-24\\x=\frac{-24}{-3}\\x=8[/tex]
So, we get Value of x =8
Now, putting value of x in eq(1) to find value of y
[tex]2x+2y=36.50\\Put \: x=8\\2(8)+2y=36.50\\2y=36.50-16\\2y=20.5\\y=\frac{20.5}{2}\\y=10.25[/tex]
So, we get Value of y = 10.25
So,
Cost of child movie = x = $8
Cost of adult movie = y = $10.25