Answer:
k ±16
Step-by-step explanation:
Evaluate x^2 + 8 x + k where x = -4:
x^2 + 8 x + k = k - 4 8 + (-4)^2
(-4)^2 = 16:
k - 4 8 + 16
8 (-4) = -32:
k + -32 + 16
Grouping like terms, k - 32 + 16 = k + (16 - 32):
k + (16 - 32)
16 - 32 = -16:
Answer: k ±16
Answer:
The answer is
k=−11
Explanation:
Let
f(x)=x^3−6x62+kx+10
If (x+2)is a factor
Then,
f(-2)=0
f(−2)= −8− 24 − 2k + 10= 0
2k=-22
k=−11
Step-by-step explanation:
What’s 1+2842-40+7263-1000
Answer:
9,066 is your answer
1)
What is the volume of this rectangular prism? Type your answer in the box.
Use unit cubes to solve. Click the Unit Cube button below.
= 1 cubic unit
3 units
2 units
8 units
Answer: 48 units³
Step-by-step explanation:
Volume can be solved with V = L * W * H
V = L * W * H
V = 8 units * 2 units * 3 units
V = 48 units³
classify 8x³-9x the polynominal by its degree and number of term
Answer:
Degree: cubic
Number of terms: binomial
Step-by-step explanation:
Look at the exponents to find the degree. Biggest exponent is 3, third power, that's a cubic, like a cube.. 3D.
There's a plus separating the two terms...Two terms-that's the "bi-" in binomial, like a bicycle or bifocals or binational. The prefix "bi-" means two.
find the circumference of a circle 18.8yd
Answer:
59.062yd
Step-by-step explanation:
C=πd
π*18.8yd
=18.8π≈59.0619189=59.062yd
Given:
p: student achieves 90 percent on the geometry final.
q: student will receive a passing grade in geometry class.
Which statement is logically equivalent to a - p?
O If a student achieves 90 percent on the geometry final, then the student will pass geometry class.
O If a student passes geometry class, then the student achieved 90 percent on the geometry final.
O If a student did not achieve 90 percent on the geometry final, then the student did not pass geometry class.
O If a student did not pass geometry class, then the student did not achieve 90 percent on the geometry final.
Answer: If a student achives 90% on geomerty final, then the student will pass geometry class
Step-by-step explanation:
sounds the most reasonable
What will the equation be if f(x)= x^2 is translated 6 units left and 3 units up?
Answer:
f(x) = (x+6)^2 +3
Step-by-step explanation:
When x = 5, the value of the expression
.-2(x - 10) is
O -21
O-9
O 9
O 19
[tex]{\boxed{\mathfrak\pink{\fcolorbox{pink}{pink}{Answer:-}}}}[/tex]
★ Points to be noted 1st:-
★ Given equation=
-2(x-10)nd
x= 5[tex] \underline{\rule{60mm}{2.9pt}} [/tex]
★ Let's substitute x = 5 in given equation to the value of expression
[tex]\sf\:↬-2((5)-10)\\ \sf \:↬Distribution \: of \: -2 \:with \: "5" \: nd \: "-10" \: \\↬ - 10 + 20 \\↬10[/tex]
soo when x = 5 the value of expression is 10
[tex] \underline{ \underline {\rule{70mm}{2.9pt}}}[/tex]
Answer:
10
Step-by-step explanation:
Given
x = 5To solve
-2(x - 10)To find the value of the expression, substitute x = 5 in the equation.
-2(5 - 10)-2(-5)10Solve the system of equations:
y= 2x - 2
y= x2 - x-6
O A. (-1,-5) and (4,2)
O B. (0, -2) and (2, 2)
O C. (-1,-4) and (4, 6)
D. (-2,0) and (3,0)
Answer:
C) (-1, -4) and (4, 6)
Step-by-step explanation:
[tex]\textsf{Equation 1}:y=2x-2[/tex]
[tex]\textsf{Equation 2}:y=x^2-x-6[/tex]
Substitute Equation 1 into Equation 2 and solve for x:
[tex]\implies 2x-2=x^2-x-6[/tex]
[tex]\implies x^2-3x-4=0[/tex]
Find two numbers that multiply to -4 and sum to -3: -4 and 1
Rewrite the middle term as the sum of these two numbers:
[tex]\implies x^2-4x+x-4=0[/tex]
Factorize the first two terms and the last two terms separately:
[tex]\implies x(x-4)+1(x-4)=0[/tex]
Factor out the common term [tex](x-4)[/tex]:
[tex]\implies (x+1)(x-4)=0[/tex]
[tex]\implies (x+1)=0 \implies x=-1[/tex]
[tex]\implies (x-4)=0 \implies x=4[/tex]
Substitute the found values of x into Equation 1 and solve for y:
[tex]x=-1 \implies y=2(-1)-2=-4[/tex]
[tex]x=4 \implies y=2(4)-2=6[/tex]
Therefore, the solution to the system of equations is:
(-1, -4) and (4, 6)
Write the equation of a line in point-slope form that passes through the point (4, -2) and has a slope of 5.
90 divded by 18
what is the answer
Answer:
Answer to your question is 5
Step-by-step explanation:
hope it helps(^-^)
formula for area of triangle
Answer:
[tex]area \: of \: triangle \: = \frac{1}{2} b \times h[/tex]
The area of a triangle formula is A = 1/2 × b × h, where b is base and h is height.
What is the area of a triangle?The area of a triangle is defined as the total space occupied by the three sides of a triangle in a 2-dimensional plane. The basic formula for the area of a triangle is equal to half the product of its base and height, i.e., A = 1/2 × b × h.
Here,
The area of a triangle formula is 1/2× b × h, where b=base and h=height.
Example: Find the area of a triangle with base 12 units and height 3 units.
Now, area of a triangle = 1/2× 12 × 3
= 6 × 3
= 18 square units
Therefore, area of a triangle formula is A = 1/2 × b × h.
To learn more about the area of a triangle visit:
brainly.com/question/27701864.
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"Your question is incomplete, probably the complete question/missing part is:"
What is formula for area of a triangle?
Matt is putting a border around a right triangle and needs to figure out the triangle's height. If the triangle has a base length of 12 cm and a total area of 24 cm², what is the height?
Answer:
4 cm
Step-by-step explanation:
area of a triangle = 1/2 * base * height
24 = 1/2 12 * height
height = 4 cm
help please
simplify (5x-3)^2
Answer:
[tex]\Longrightarrow: \boxed{\sf{25x^2-30x+9}}[/tex]
Step-by-step explanation:
Isolate the term of x from one side of the equation.
Use the perfect square formula.
[tex]\underline{\text{PERFECT SQUARE FORMULA:}}[/tex]
[tex]\Longrightarrow: \sf{(A-B)^2=A^2-2AB+B^2}[/tex]
(5x-3)²
(5x-3)²= (5x)²-2*5x*3+3²
Solve.
[tex]\sf{(5x)^2-2*5x*3+3^2=\boxed{\sf{25x^2-30x+9}}}[/tex]
Therefore, the final answer is 25x²-30x+9.Answer:
25x² - 30x + 9Step-by-step explanation:
The identity
(a - b)² = a² - 2ab + b²In this case, a = 5x and b = 3, so substituting the values :
(5x - 3)²(5x)² - 2(5x)(3) + (3)²25x² - 30x + 9The sum of two numbers is 85. The second number is 4 more than 2 times the first number. Let x represent the first number and let y represent the second number. What are the two numbers? Use the table to guess and check.
Numbers
x
y
x + y = 85
y = 2 x + 4
19 and 65
25 and 60
27 and 58
32 and 53
Answer:c
Step-by-step explanation: took the test
Solve ABCD. Round the answers to the nearest hundredth.
A. MZD=69, BC = 16.8, CD = 6.45
B. mD=159, BC = 16.8, CD = 6.45
C. MZD= 69, BC = 6.45, CD = 16.8
D. MZD= 159, BC = 6.45, CD = 16.8
-
Answer:
Step-by-step explanation:
a
Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (–1 i) (21 5i)?
Answer:
C i think
Step-by-step explanation:
If you buy something for $3.84 how much change will you get back from $5.00?
Answer:
1.16
Step-by-step explanation:
Answer: you’d get $1.16
Step-by-step explanation: Simple. Do $5 and subtract 3.84 and you’d get $1.16 hope this helps. :)
I really need help. Can you please solve this
A car travels xkm in 3 hours. How far will it travel in 9 hours?
Answer: 9X/3 km or divide it further
Step-by-step explanation:
Distance traveled = X
TIME = 3hours
Speed = X/3 km/hr
Distance in 9hours = X/3 × 9/1
Guess the name of this war criminal
Answer: Is it posibley ... André Bloch
Step-by-step explanation:
Due to not a lot of information on this question i had to improvis and i got this man who in fact was a mathmaticion that had comitted a murder. It may ot be war crimies but war crimes include murder so yea.
Answer:
There is no information or picture regarding the question
PLEASE HELP MEEE PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Draw the graphs of the lines below on the same grid to find the coordinates of the point of intersection. y + 5 = 2 x y = 7 − 2 x
Answer:
The point of intersection is (3,1)
Step-by-step explanation:
Manipulate these equations to achieve the form of y = mx + c
1) y + 5 = 2x
Y = 2x - 5
2) y = 7 - 2x
Y = -2x + 7
Point of intersection is (3,1) on the graph attached
To check algebraically:
2x - 5 = -2x + 7
4x = 12
X = 3
Substitute to get y
Y = 2x - 5
Y = 2 x 3 - 5
Y = 1
Therefore (3,1)
This soup can has deiameter of 7 centimeters and a height of 10 centimeters the total surface is what
Answer:
Step-by-step explanation:
Formula
SA = 2*pi r^2 + 2*pi * r * h
Givens
pi = 3.14
r = d/2 radius = diameter /2
r = 7/2 = 3.5
h = 10 cm
Solution
SA = 2*3.14 *3.5^2 + 2*3.14 * 3.5 * 10
SA = 76.93 + 219.8
SA = 296.73 cm^2
Answer
Surface Area = 296.73 cm^2
The first bricklayer can build a wall in 15 days, and the second bricklayer can build the same wall in 10 days How long will it take for them to build the wall together?
Answer:
It will take both of the brick layers twelve and half days
6 Days
Step-by-step explanation:
First you must find the combined rate of work per day between the two bricklayers.
(100/10)+(100/15) = 16 2/3
For each day the two bricklayers complete 16 2/3 percent of the work. To find out the amount of days it take them to build the wall you divide 16 2/3 from 100
100/16 2/3 = 6
The amount of days it take the two bricklayers to build the wall together is 6.
which expression is equivalent to c-10c +3c
Answer:
[tex]c-10c+3c=4c-10c=-6c[/tex]
Step-by-step explanation:
The expression which is equal to the given expression c - 10c + 3c will be -6c.
What is an expression?A mixture of variables, numbers, addition, subtraction, multiplication, and division are called expressions.
An expression is a mathematical proof of the equality of two mathematical expressions.
As per the given expression,
c - 10c + 3c = c + 3c - 10c
= 4c - 10c
= -6c
Hence "The expression which is equal to the given expression c - 10c + 3c will be -6c".
To learn more about expression,
https://brainly.com/question/14083225
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Which statement is not true about the data shown by the box plot below?
5 number summary: 23, 40, 55, 65, 79
A. The median of the data is 55.
B. The interquartile range is 55.
C. Three fourths of the data is less than 65.
D. The median of the upper half of the data is 65.
Reset Selection
Answer:
B. The interquartile range is 55
Step-by-step explanation:
the interquartile range is Q3 minus Q1, you would get 15 ,not 55. So B is the answer to your question
Answer:
B. The interquartile range is 55.
Step-by-step explanation:
In this problem, I refer to the right part of the box as the median of the upper half and the left part of the box as the median of the lower half.
The median of the data is going to be the middle line of the box and whisker plot. The middle line lies on 55, so the median is 55.
Choice A is true
The interquartile range is the right end of the box subtracted from the left end of the box. The right end of the box is 65. The left end of the box is 40. Subtracting the left end from the right end, we get 25.
Choice B is false
3/4 of the data will be where we see the right end of the box. The right end of the box is at 65. So, 3/4 of the data is less than 65.
Note: 1/4 of the data is less than the left side of the box at 40. 1/2 of the data is less than the median of the box which is at 55.
Choice C is true
The median of the upper half is the right end which is 65.
Note: The median of the lower half is 40.
Choice D is true
What is the value of x in the equation 3x + 2 = 5x - 8?
Answer:5
Step-by-step explanation:
3(5)+2=17
5(5)-8=17
X=5
30 POINTS!
Find x if ∠m1 = 2x + 10 and m∠2 = 3x - 6
Answer choices:
42, 24, 4, 16
Answer: 16
Step-by-step explanation:
If x= m + 2, find the value of m from the 3m-4/2 - 4x-3/6 equation = 3.
Answer:
Step-by-step explanation:
3m-4/2-4 (m+2 )-3/6=3
3m-4/2-4m-8-3/6=3
-m-3/2-8=3
-m-11=3
-m=3+11
-m=14
m=-14
Ria has to pay 20% tax on any income above £11,000 per year.
Ria's salary before tax is £3,000 per month.
Calculate the amount of money she receives after tax each year.
Answer:
£28,800
Step-by-step explanation:
Given:
Ria has to pay 20% tax on any income above £11,000 per year. Her salary before tax is £3,000 per month.To find:
Amount of money she receives after tax each year.Solution:
Ria's salary before tax is £3,000 per month.
(i.e) £12 * 3,000/year = £36,000.
Now she has to pay 20% tax.
(i.e) 80/100 * 36,000 = £28,800
Hence, Ria receives £28,800 each year after tax.