Answer:
x^3-2x^2-13x+6
Step-by-step explanation:
We are to simplify the expression (x+3)(x^2−5x+2). This is as shown;
(x+3)(x^2−5x+2)
Expand
= x(x^2)-5x(x)+2x+3x^2-3(5x)+6
= x^3 - 5x^2+2x+3x^2-15x+6
Collect the like terms
= x^3 - 5x^2+3x^2+2x-15x=6
= x^3-2x^2-13x+6
This gives the required expression
Find the value of this expression if x = -1 and
y = 9.
x²y
-7
Answer:
-9/7
Step-by-step explanation:
Simplify and remove like terms.
Once upon a time I weighed 120 pounds. Now I weigh 225 pounds. What is the percent change?
Answer:
The percent change is 87.5%. (You're one chonky boi lol)
Step-by-step explanation:
To find the percent change, calculate the difference between the new weight and the old weight and divide that value by the old weight and multiply by 100% to find the percent change. In this case, the equation would be [tex]\frac{225-120}{120}[/tex] * 100% = [tex]\frac{105}{120}[/tex] * 100% = 0.875 * 100% = 87.5%, so the correct answer is a percent change of 87.5%.
Answer:
[tex]53\frac{1}{3}[/tex] %
Step-by-step explanation:
[tex]\frac{120}{225} =\frac{y}{100}[/tex]
225 × y = 120 × 100
225y = 12000
225y ÷ 225 = 12000 ÷ 225
[tex]y=53\frac{1}{3}[/tex]
help me pleaseeeeeeee
pls hurry i need answers
Answer:
option D
Step-by-step explanation:
1. Evaluate the following expression. Write your answer WITHOUT any exponents. (52)8 x 5-9
Answer:
The answer is 2080x - 9
Hope this helps
If a dolls cup holds 2ml, how many cups would it take to fill a doll's 10ml bottle
Answer:
it would take 5 dolls cups
Need help. I've been stuck on this question for a long time.
Answer:
x = 24.75
Step-by-step explanation:
28/8 = 2x+3/15
420 = 16x +24
396 = 16x
x = 24.75
2(24.75) +3 =
49.5 + 3 = 52.5
Answer:
x=9
Step-by-step explanation:
let's find the scale factor of the enlargement ∆ABC of ∆ADE
k=28/20=7/5 or 1.4
Now k×|AD|=|AB|
Therefore
k×|DE|=2x+3
7/5×15=2x+3
21=2x+3
21-3=2x
2x=18
x=9
let me know if I was right
In a recent town election, 1,860 people voted for either candidate A or candidate B for the position of supervisor.
If candidate A received 55% of the votes, how many votes did candidate B receive?
NEED HELP NOW PLZ!!!!!!!!
Answer:
It would be F-40 in
Step-by-step explanation:
This is because 30 is 2.5 times greater than 12, so 16 times 2.5 equals 40 :)
hope this helps!!
proportionals
[tex] \frac{12}{16} = \frac{30}{pq} [/tex]
[tex]16 \times 30 \div 12[/tex]
PQ=40
A textbook store sold a combined total of 470 biology and history textbooks in a week. The number of history textbooks sold was 62 less than the number of biology textbooks sold. How many textbooks of each type were sold?
Sonya randomly surveys 26 seventh graders to gather data about the amount of time spent each week using the Internet. Sonya records the data in the dot plot shown. What is the median of the data set?
What is the mean and the median
Answer:
You're lucky I have the dot plot, other wise this could not be answered.
Median: 7.5
Mean: 7.5
Yes, they are both 7.5.
Between June 2017 and June 2018, the price of gasoline increased by 25%. If the price
of gasoline was $3.00 per gallon in June 2018, what was the price of gasoline in June
2017?
Answer:
$2.4
Step-by-step explanation:
2018 June 2017June
125 100
1 0.75
Therefore, 3= 100x3/125
=300/125
=$2.4
hope it helps:D
plz mark me as brainliest
Tatiana has 894 flowers. She is making bouquets with 8 flowers in each bouquet. When she is done making all of the bouquets, how many flowers will she have left over? *
Answer:
6
Step-by-step explanation:
The remainder when 8 divides 894 is 6. So, she will be left with 6 flowers.
hewlpppppppppppppp pweaseee
Answer:
there is no question to be answered.
Step-by-step explanation:
Help please
Help
Help
Help
Answer:
-3/4x + 1/4
Step-by-step explanation:
Given equation of line: y = mx+c,
where m = slope and c = y-intercept
given m = -3/4,x = -5, y=4,
[tex]4 = ( - \frac{3}{4} )( - 5) + c \\ c + 3.75 = 4 \\ c = 0.25 \: or \frac{1}{4} [/tex]
therefore equation of line :
[tex]y = - \frac{3}{4} x + \frac{1}{4} [/tex]
therefore answer is the first one.
What are the integer solutions to the inequality below?
−1≤x<3
thefes 4 boxes for this answe
Answer:
-1/0/1/2
Step-by-step explanation:
Answer:
Step-by-step explanation:
GO AND GET THE ONE IN MY CAR I WILL GET YOU THE ONE IN MY CAR I HAVE A COUPLE THINGS I CAN GET YOU IN MY CAR I DON’T HAVE TO GET IT DONE I JUST WANT YOU IN MY CAR I JUST GOT OFF WORK AND I WAS IN A LITTLE WHILE AGO I GOT TO JOKE
PLEASE HELP!!! I WILL RATE YOU BRAINLIEST
The first laptop ever was sold was the Osborne 1. It came onto the market in 1981, and it had a mass of 11 kg. Suppose that since 1981 the mass of laptops has decreased at an average rate of 4.7% per year. What was the approximate weight of a laptop in 2019?
a. 6.43 kg
b. 8.10 kg
c. 4.62 kg
d. 1.76 kg
Answer:
A. 6.43 kg
Step-by-step explanation:
Sana nakatulong
which choice is equivalent to the expression below? 12^-2
12 Points!!!!
D
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
[tex]12 {}^{ - 2} = 0.00694444444 = \frac{1}{144} [/tex]
A metal cyllinder is hollow in the middle. The cylinder is 40 mm long. The hollow center has a radius of 15 mm. The radius from the hollow center to the edge of the metal cylinder is 34 mm. What is the total volume of metal that makes up the cylinder? Leave your answer in terms of \large \pi and round to the nearest hundredth if necesarry. V = \large \pi mm3
Answer:
Answer is in picture and explanation below.
Step-by-step explanation:
Continuing from the picture,
Area of Metal base = Area of Bigger Circle - Area of Hollow Circle
=
[tex]1156\pi {mm}^{2} - 225\pi {mm}^{2} \\ = 931\pi {mm}^{2} [/tex]
Volume of Cylinder = Area of Metal base x Height (Length in this case)
=
[tex]931\pi {mm}^{2} \times 40 \\ = 37240\pi {mm}^{3} [/tex]
Determine the value of x in the diagram.
what is the area of this figure?
Answer:
963^2ft
Step-by-step explanation:
i think, sorry if it's wrong
Answer:
346 inches
Step-by-step explanation:
b)são múltiplos de 3 mas não de 2:
Answer:
3, 9, 15, 21, 27, 33, 39, 45...
Step-by-step explanation:
Los números que son múltiplos de 3 mas no de 2 son todos aquellos número que, formando parte del grupo de números divisibles por 3, sean impares. Es decir que todo número divisible por 3 que no termine en un número par no será divisible por 2. Ello es así porque todos los números pares son divisibles por 2.
What is the value of the discriminant, b2-4ac, for the quadratic equation 0=x^2-4x+5, and what does it mean about the number of real solutions the equation has
Answer:
-4, no real solutions
Step-by-step explanation:
b^2 is 16 since b is -4
4ac = 4*1*5 = 20
16 - 20 is -4
no real solutions since you cant get the squareroot out of a negative number (at least not real numbers)
Answer:B
Step-by-step explanation: The discriminant is −4, so the equation has no real solutions.
Got it from EDG Its right trust
The large pizza is 16 inch what the circumference plz help
Answer:
50.265 inches
Step-by-step explanation:
Rachel needs to buy some pencils. Brand A has a pack of 28 pencils for $5.29. Brand B has a pack of 48 pencils for $8.47 . Find the unit price for each brand. Then state which brand is the better buy based on the unit price. Round your answers to the nearest cent.
Answer:
Hence Brand B is the better buy, since the unit cost is smaller than A
Step-by-step explanation:
Given data
Brand A
Has a pack of 28 pencils for $5.29
unit cost
=5.29/28
=$0.19
Brand B
Has a pack of 48 pencils for $8.47
unit cost
=8.47/48
=$0.18
I need help with this please
Answer:
Part A
2·a + b ≤ 14
Part B
Please find attached the graph of the inequality created with Microsoft Excel
Part C
1) 4 pounds of apples + 8 pounds of bananas
2) 8 pounds of apples + 6 pounds of bananas
Step-by-step explanation:
Part A
The amount Tony has to buy apples and bananas = $14
The cost of apples per pound = $2
The cost of bananas per pound = $1
Let 'a' and 'b' represent the number of apples and bananas Tony buys respectively, we have;
2·a + b ≤ 14
Part B
In order to plot the inequality, we make one of the variables the subject of the inequality as follows;
b ≤ 14 - 2·a
The above inequality can be plotted with Microsoft Excel and the feasible region shaded as shown in the attached diagram
Part C
Two possible combinations of pounds of apples and bananas that Tony can buy are;
1) 4 pounds of apples and 8 pounds of bananas which gives 2 apples and 8 bananas
2) 8 pounds of apples and 6 pounds of bananas which gives 4 apples and 6 bananas
Help with the this question pleaseeee
Answer:
32x - 8
Step-by-step explanation:
A = LW
A = (8x - 2)(4)
A = 32x - 8
In the given rectangle
US = 4x - 16 and RO = x + 2, find RT.
Show all the work
Answer:
RT = 24
Step-by-step explanation:
Diagonals of rectangles bisects each other and equal in length (congruent) to each other.
Thus
US = RT
US = 2(RO)
4x - 16 = 2(x + 2)
4x - 16 = 2x + 4
2x = 20
x = 10
RT = 2(RO)
= 2(x+2)
= 2(10 + 2)
= 2(12)
= 24
Find the slope of the line through (4,−5) and (−2,1).
Answer:
slope = - 1
Step-by-step explanation:
Calculate the slope m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (4, - 5) and (x₂, y₂ ) = (- 2, 1)
m = [tex]\frac{1+5}{-2-4}[/tex] = [tex]\frac{6}{-6}[/tex] = - 1
Answer:
-1
Step-by-step explanation:
To find the slope, plug the values of x and y into the slope formula.
y2 - y1 / x2 - x1
1 - (-5) / - 2 - 4
6 / -6
= -1
multiply. 4x(y+x+z)
please help
Answer:
4xy + 4x² + 4xz
Step-by-step explanation:
4x(y+x+z)
4xy + 4x² + 4xz
Answer:
4xy+4x^2+4xz
Step-by-step explanation:
You would just factor the first 4x to the rest of the terms and if they are different letters just tack them on at the end, in the case of 4x times x it would square to 4x^2