Evaluate -xy^2-2y for x=-4 and y=-2
Need help
If –7 + 13i is a root of the polynomial function f(x), which of the following must also be a root of f(x)?
Group of answer choices
7 + 13i
-7 - 13i
20i
-13i
Answer:
2nd option -7 - 13i
Step-by-step explanation:
took review
pls help i need this all my questions disappered
Simplify the expression
Answer:
[tex]-\frac{4}{7} -\frac{8}{7} i\sqrt{5}[/tex]
Step-by-step explanation:
To rationalize the denominator, we would have to multiply by the complex conjugate of 6 + 2i√5 which is 6 - 2i√5:
[tex]\frac{8-8i\sqrt{5} }{6+2i\sqrt{5} } *\frac{6-2i\sqrt{5} }{6-2i\sqrt{5} }[/tex]
The denominator resembles the difference of squares:
6^2 - (2i√5)^2
36 + 20
56
Next we would need to multiply the numerator, but before, notice we can factor out 8 from 8 - 8i√5:
[tex]\frac{8(1-i\sqrt{5})(6-2i\sqrt{5}) }{56}[/tex]
We can cancel that 8 with that 56 in the denominator:
[tex]\frac{6-2i\sqrt{5}-6i\sqrt{5}-10}{7}[/tex]
This simplifies to:
[tex]\frac{-4-8i\sqrt{5} }{7}[/tex]
which is the same as:
[tex]-\frac{4}{7} -\frac{8}{7} i\sqrt{5}[/tex]
What percent is represented by the shaded area?
Answer:
34%
Step-by-step explanation:
the graph is a hundred so all you have to do is count the number of squares which is 34
Since 16 > O what does that tell you about the
number of solutions.
No real solutions
2 real solutions
1 real solution
Answer:
2 real solution
Step-by-step explanation:
3xghrur
2(5x+4)+3x
Solve.
No spam.
Answer:
≈13x+8
Step-by-step explanation:
Let's simplify step-by-step.
2(5x+4)+3x
Distribute:
=(2)(5x)+(2)(4)+3x
=10x+8+3x
Combine Like Terms:
=10x+8+3x
=(10x+3x)+(8)
=13x+8
[tex] \boxed {\bf Answered \: by \: subhash}[/tex]
[tex] \boxed{\bf Good \: luck \: for \: your \: assignment}[/tex]
a bottle holds 80 fluid ounces of lemonade. how much is this in pints
Answer: 5 pints
Step-by-step explanation:
divide the volume value by 16
so 80 divided by 16.
Which of the following statements is true?
Answer:
lol what
Step-by-step explanation:
i dont get it xD
Where is the question??
I mean,Where is the options?
can you tell me pls..I will answer it correctly ❤️
Have a good day!
Coverte 2.75 into fraction
Answer:
2 3/4 or 11/4
Step-by-step explanation:
2.75 = 11/4 = 2 3/4 as a fraction
To convert the decimal 2.75 to a fraction, just follow these steps:
Step 1: Write down the number as a fraction of one:
2.75 = 2.75 / 1
Step 2: Multiply both top and bottom by 10 for every number after the decimal point:
As we have 2 numbers after the decimal point, we multiply both numerator and denominator by 100. So,
2.75 / 1 = (2.75 x 100)/(1 x 100) = 275/100.
Step 3: Simplify (or reduce) the above fraction by dividing both numerator and denominator by the GCD (Greatest Common Divisor) between them. In this case, GCD(275,100) = 25. So,
(275 ÷ 25)/ (100 ÷ 25) = 11/4 when reduced to the simplest form.
As the numerator is greater than the denominator, we have an IMPROPER fraction, so we can also express it as a MIXED NUMBER, thus 275 /100
is also equal to 2 3/4 when expressed as a mixed number.
How to Convert a Decimal to a Fraction - Steps
Step 1: Write down the decimal as a fraction of one (decimal/1);
Step 2: If the decimal is not a whole number, multiply both top and bottom by 10 until you get an interger at the numerator.
Step 3: Simplify (or reduce) the fraction if it is not in the simplest form.
identify each classification of the real number system that can describe the set of numbers shown {3, 9, 147, 400}
) Integer
) Irrational
) Real
) Rational
) Whole
) Natural
Step-by-step explanation:
all of these 4 numbers are
integer (whole numbers positive and negative).
real (every whole number can be written as e.g. 3.0 and is part of the real numbers).
rational (as any whole number can be written as e.g. 3/1 and is part of the rational numbers).
whole (no fractions).
natural (they are in the set of [1, 2, 3, ... infinity) ).
the only thing here they are not is irrational, as to be irrational they would need to have an infinite sequence of digits after the decimal point without any repeating pattern.
a textbook store sold a combined total of 348 history and chemistry text in week.The number of history textbooks sold was three times the number of chemistry books were sold. how many book of each type were sold.
Answer:
x=87, y=261
Step-by-step explanation:
x+y=348 and 3x=y
plug 3x in for y.
x+(3x)=348
4x=348
x=87
plug x in to solve for y.
3(87)=y
y=261
Find the unit rate $72 in 4 hours
Answer:
72 dollars ÷ 4
4 hours ÷ 4
=
18 dollars
1 hour
=
18 dollars
hour
= 18 dollars per hour
Step-by-step explanation:
Answer:
its 76 becuse 72+4=76
Step-by-step explanation:
72+4=76
help plz its so hard and im giving brainly and 20 points
Answer:
The answer is 5.
Step-by-step explanation:
10 ÷ 2 = 5.
Answer:
5
Step-by-step explanation:
If you want to divide ten blocks into two groups just imagine you split all of the blocks evenly, so you have ten and to have an equal amount of blocks on two sides you will put five on each side, then your answer is five because you are able now to equally divide them into two groups.
Hope it helps bai!
Happy Halloween if you celebrate it!
Which of these numbers is the greatest? No links
A. 2.3 x 10^3
B. 8.6 x 10^3
C. 1.2 x 10^4
D. 3,600
Answer:
c. 1.2 * 10^4
Answer : D. 3,600
sorry if that's wrong
Suppose A={0,12,−3,7,18}, B={−1,5,7,18}, and C={−3,5,9}. What is A∩(B∪C)?
Answer: {-3, 7, 18}
Step-by-step explanation:
B ∪ C = {-3, -1, 5, 7, 9, 18}
A ∩ (B∪C) = {-3, 7, 18}
please give me a brainliest answer
Answer:
A∩(B∪C)={-3, 7, 18}Step-by-step explanation:
First we look at PEMDAS.
In A∩(B∪C), parentheses come first.
So, we do B∪C.
The ∪ symbolizes union, which means you have to combine the elements of the two sets.
If B={−1,5,7,18}, and C={−3,5,9}, then both of them together is {-3,−1,5,7,9,18}. I used underlining and italics to show where the numbers came from. There is a 5 in both sets, but you only have to put it once.
B∪C={-3,−1,5,7,9,18}.
Now that we have B∪C, we can solve for A∩(B∪C).
∩ means intersection, so you find the elements in both sets. Basically, just look for numbers that appear in both A and B∪C.
B∪C={-3,−1,5,7,9,18}
A={0,12,-3,7,18}
Therefore, A∩(B∪C)={-3, 7, 18}
Hope this helped! <3
Which values of a, b, and c correctly complete the division?
A. a = 4, b = 5, c = 6
B. a = 1, b = 6, c = 5
C. a = 1, b = 5, c = 6
D. a = 4, b = 6, c = 5
If we compare both sides of the equation we get,
D. a = 4, b = 6 and c = 5
Evaluate the expression
12 - 3 2+429,- 4) for y = 3.
Answer:
9,427) y=5
is correct answer
Can someone do these two for me please?
Answer:
3) 2
4) Water's Edge Rafts
Step-by-step explanation:
3) Rate of change is nothing but the slope
Slope formula : y2 - y1 / x2 - x1
13 - 11 / 2 - 1
2/1
2
Rate of change = 2
4) Rate of change : y2 - y1 / x2 - x1
Water's Edge Rafts
36 - 6 / 6 - 1
30/5
6
Water's Edge Rafts' Rate of change = 6
Ryan's Rafts
17.25 - 15.00 / 2 - 1
2.25/1
2.25
Ryan's Rafts' Rate of change = 2.25
6>2.25
So, Water's Edge Rafts' has the highest rate of change
Answer:
2 for # 3
2.25 for # 4
Step-by-step explanation:
15-11/3-1
=2
(19.50-15)/(3-1)
2.25
How many triangles are here
Answer:
6 types of triangles?
isosceles, equilateral, scalene, obtuse, acute, and right
How many Triangles are where ?
there is no image of triangles
thus i can not tell you how many triangles there are
PLS HELPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
the answer to that I think is a or c. either one of those.
Write the standard form of the equation of the circle with radius r and center (h, k).
r = 2; (h, k) = (-10, 5)
Answer:
[tex](x+10)^2+(y-5)^2=4[/tex]
Step-by-step explanation:
Hi there!
Equation of a circle: [tex](x-h)^2+(y-k)^2=r^2[/tex] where [tex](h,k)[/tex] is the center of the circle and [tex]r[/tex] is the radius
Plug in the center (-10,5) and the radius 2:
[tex](x-(-10))^2+(y-5)^2=2^2\\(x+10)^2+(y-5)^2=4[/tex]
I hope this helps!
Find the Quadratic function model that best fits this data.
Answer:
your answer is as follows
Step-by-step explanation:
the first option fits.. I.e., y=x^2-12
The line y+4=3/4(x-8) contains point (a,2). Find a.
Answer:
a = 16
Step-by-step explanation:
[tex]y + 4 = \dfrac{3}{4}(x-8)\\\\y + 4 = \dfrac{3}{4}x- \dfrac{3}{4}*8\\\\y +4 = \dfrac{3}{4}x-3*2\\\\y+4+6= \dfrac{3}{4}x \\\\y+10= \dfrac{3}{4}x[/tex]
Now plugin x = a and y =2 in the above equation,
[tex]2+10= \dfrac{3}{4}*a\\\\12= \dfrac{3}{4}a\\\\12* \dfrac{4}{3}=a\\\\a=4*4\\\\a=16[/tex]
Please help me I need this for tonight
Answer:
It is C because 4+8=3(4)
That's =12 =12
pogle...
Drought conditions in Texas are causing
lake levels to drop 3 inches per day.
If it doesn't rain for a week,
then what will the level change
be at the end of the week?
Answer:
21 inches
Step-by-step explanation:
if its 3 inches everyone day, and theres 7 days a week. that would mean it would drop 21 inches
Simplify 2^4 x 2^3 / 2^5 x 2^4
In index form
Answer:
1/2^2
Step-by-step explanation:
There can't be a negative exponent
Answer:
2^6 would be index form
Step-by-step explanation:
MAX POINTS!!! Write and solve a system of equations. Be sure to label the variables. The difference of two numbers is two. Two times the first number plus the second number is thirteen. What are the numbers? Show and explain all work.
Answer:
5 and 3Step-by-step explanation:
Let the numbers be x and y.
The equations are:
x - y = 22x + y = 13Add up the equations to eliminate y and solve for x:
x - y + 2x + y = 2 + 133x = 15x = 15/3x = 5Now find the value of y:
y = x - 2 y = 5 - 2 y = 3Let the numbers be a and b
a-b=2--(1)2a+b=13---(2)Adding both
[tex]\\ \sf\longmapsto 3a=15[/tex]
[tex]\\ \sf\longmapsto a=5[/tex]
Putting in eq(1)
[tex]\\ \sf\longmapsto 5-b=2[/tex]
[tex]\\ \sf\longmapsto b=5-2[/tex]
[tex]\\ \sf\longmapsto b=3[/tex]
2) A rectangular solid measures 150 cm by 100 cm by 200 cm Calculate the volume in various units:
a. In cm3
b. In dm3 {show conversion factor}
C. In gallons (show conversion factor) (hint: 1dm3 = 1L)
Answer:
a. In cm3 - 3 Cubic Meters
b. in dm3 - 3,000 Cubic Decimeters
c. In gallons = 792.51615707445 gallons
d. In liters (extra) - 3000.00000000001819
Step-by-step explanation:
RP = l x w x h
V = 3,000,000
Rectangular solid is a rectangular prism - To find the volume of a rectangular prism, multiply its 3 dimensions: length x width x height. The volume is expressed in cubic units.
:- State the property involved in the statement: 96 X (123 – 11 ) = (96 X 123 ) – (96 X 11 ) a) Distributive property of multiplication for subtraction b) closer property c) Property of unity d) commutative law
please help me please help me
Answer:
Associative property of multiplication
Step-by-step explanation:
The word "associative" comes from "associate" or "group"; the Associative Property is the rule that refers to grouping. For addition, the rule is "a + (b + c) = (a + b) + c"; in numbers, this means 2 + (3 + 4) = (2 + 3) + 4. For multiplication, the rule is "a(bc) = (ab)c"; in numbers, this means 2(3×4) = (2×3)4.