Answers
Answer:
1) 23a + 18
2) 23a - 6
3) 23a - 18
4) -16
5) 7a - 6
Step-by-step explanation:
Use the distributive property (if it is subtraction remember to distribute the negative sign as well)
1) 3(5a + 2) + 4(2a + 3) = (15a + 6) + (8a + 12) = 23a + 18
2) 3(5a + 2) + 4(2a - 3) = (15a + 6) + (8a - 12) = 23a - 6
3) 3(5a - 2) + 4(2a - 3) = (15a - 6) + (8a - 12) = 23a - 18
4) 3(5a - 2) - 5(3a - 2) = (15a - 6) - (15a +10) = 15a - 6 - 15a - 10 = -16
5) 3(5a + 2) - 4(2a + 3) = (15a + 6) - (8a + 12) = 15a + 6 - 8a - 12 = 7a - 6
Try doing the rest :)
Related Questions
if 2 men and 3 boys can do a piece of work in 8 days whole 3 men and 4 boys will do it in:
A. 3 days
B. 4 days
C. 5 days
D. 6 days
Answers
Answer:
I think D. 6 days
Step-by-step explanation:
let me know if im wrong..
Which of the following is an ordered pair on the graph? What does it represent in this situation?
(45, 90); the machine caps 45 bottles in 90 seconds.
(45, 900); the machine caps 45 bottles in 900 seconds.
(45, 900); the machine caps 900 bottles in 45 seconds.
(900, 45); the machine caps 900 bottles in 45 seconds.
Answers
I'm Chloe can you help me, Thanks :)
Which ordered pair is the solution to the system of linear equations?
5x + y= -4
x =-y -2
Answers
Answer:
Hola losiento no se ablar inglés
Sam invests £1800 in the bank for four
years.
It earns compound interest of 4% each year.
Calculate the total amount Sam has in the
bank at the end of four years (£ round to
2 dp).
Answers
Answer:
£2088
or
US$ 2,536.48 dollars (2021)
Step-by-step explanation:
4% of 1800 = 72
72 x 4 = 288
1800 + 288 = 2088
He has £2088 at the bank after 4 year
show your work please :)
Answers
Step-by-step explanation:
yphñotdtowtkstlstoyosotstlstlstosupfhñznx$*□◇○}₩○¥■○♧■▪︎■♧○¥□•¥{•£{•£{{£•{¥{¥•£□•□£●£•●£$>£|•
convert 18600 into km
Answers
Answer:
29933.7984 km
Step-by-step explanation:
Jenny is 9 years younger than Sammie. Five years ago Sammie was 4 times older than Jennie. How old is each now?
Pls Help Need Answer By 7:00.
Answers
Jenny is 8 years old and Sammie 17 is years old.
Given that:Jenny is 9 years younger than Sammie.Five years ago, Sammie was 4 times older than Jennie.To find:Current age of Jennie and Sammie
Calculation and Explanation.Let the current age of Jennie be x.
Let the current age of Sammie be y.
Then from given data we have:
[tex]x = y-9\\4(x-5) = (y-5)[/tex]
We'll substitute value of x from equation 1 in equation 2:
[tex]4(y-9-5) = (y-5)\\3y = 51\\y=17[/tex]
Thus, from equation 1 and y = 17, we have:
[tex]x=y-9\\x=17-9\\x=8[/tex]
Thus, Jenny is 8 years old and Sammie 17 is years old.
Learn more about age difference related posts here:
https://brainly.com/question/4159273
Answer:
Jenny is 8 years old and Sammie 17 is years old.
Notes:
Please make me the brainliest! I worked hard on this.
Write an equation in point-slope form for the line that passes through each point with the given slope (-1,-2) m= 3
Answers
Answer:
y + 2 = 3(x + 1)Step-by-step explanation:
The Point-Slope form of equation of a line with slope of "m" and passing through point (x₁, y₁) is: y - y₁ = m(x - x₁)
m = 3
x₁ = -1
y₁ = -2
Therefore the equation:
y - (-2) = 3(x - (-1))
y + 2 = 3(x + 1)circle p has a raius of r and circle q has a radius twice as large. How many time greater is the area of circle q than the area of circle p
Answers
Answer:
4 times greater
Step-by-step explanation:
see attached picture
the interval between 3:15 p.m. to 8 p.m. is
Answers
Answer:
4 hours and 45 minutes
Step-by-step explanation:
The only thing you have to do is subtract 8 by 3:15 which is 4:45. 4:45 means that it its 4 hours and 45 minutes.
Hope this helps
how do you find the area of a trapezoid that is on a rectangle
Answers
Answer:
To find the area of a trapezoid, multiply the sum of the bases (the parallel sides) by the height (the perpendicular distance between the bases), and then divide by 2.
Hope that helps!
PLZ HELP ME PLEASE!!!!... WILL GIVE BRAINLIEST. THANKYOU!
Answers
Answer:
1) 0.5
2)-2
3)-23
Step-by-step explanation:
1) -3×1=-3
-3+2.5= 0.5
2) -3×1.5=-4.5
-4.5+2.5= -2
3) -3×8.5=-25.5
-25.5+2.5=-23
Which of the following describes the way substances diffuse in and out of a cell?
A.Substances move from lesser to greater concentration.
B.Substances move back and forth across the membrane equally.
C.Substances move across the membrane when energy is available.
D.Substances move from greater to lesser concentration.
Answer please it would help me alot and thx
Answers
Answer:
Its D. Substances move greater to lesser concentration
In simple diffusion, small noncharged molecules or lipid soluble molecules pass between the phospholipids to enter or leave the cell, moving from areas of high concentration to areas of low concentration (they move down their concentration gradient). Oxygen and carbon dioxide and most lipids enter and leave cells by simple diffusion.
Have a nice day
Answer:
the answer is D.
Step-by-step explanation:
im answering so the other person can get brainliest :)
☁️☁️☁️☁️☁️☁️
rate her 1-10 for a study
Answers
Answer:
100,000,000,000,000,000
A skyrocket is launched from a 8-foot-high platform with an initial speed of 220 feet per second. The polynomial 16t^ ^ 2+220t+8 gives the height in feet that the skyrocket will rise in t seconds. How high will the rocket rise if it has a 7-second fuse?
The equation above is - 16t ^ 2 + 220t + 8
A) 748
B) 764
C) 788
D) 882
Answers
Given :
A skyrocket is launched from a 8-foot-high platform with an initial speed of 220 feet per second.
The polynomial -16t² + 220t + 8 gives the height in feet that the skyrocket will rise in t seconds.
To Find :
How high will the rocket rise if it has a 7-second fuse?
Solution :
Since, it is given that the rocket has a fuse time of 7 seconds.
Putting value of 7 sec in given equation, we get :
Height = -16×( 7 )² + 220×( 7 ) + 8
Height = 764 m
Therefore, height of rocket in 7 second fuse is 764 m.
Dan buys a car for £700.
It depreciates at a rate of 5.5% per year.
How much will it be worth in 6 years?
Give your answer to the nearest penny where appropriate
Answers
Answer:
£469
Step-by-step explanation:
Given the following
Original cost of car = £700.
Depreciation rate = 5.5%
Depreciation amount after 1 year = 5.5% * 700
Depreciation amount after 1 year = 0.055 * 700
Depreciation amount after 6 year =6 * 38.5 = £231
Worth after 6 years = £700 - £231
Worth after 6 years = £469
The correct answer is:
£498.53
Any helppp pLeAsE? T^T
Answers
answer:
c = 7.6 kilometers
step-by-step explanation:
you can use the pythagorean theorem for this since this is a right triangleknow the formula: a^2 + b^2 = c^2now plug in what we know, also remember:
a = legb = the other legc = hypotenusea^2 + b^2 = c^2
3^2 + 7^2 = c^2
9 + 49 = c^2
58 = c^2
c = 7.6157
rounded: c = 7.6 kilometers
Solve the system by graphing.
y = −x + 3
y = −3x − 1
The solution of the system
Answers
Answer:
A(-2,5)
x= -2 , y=5
Step-by-step explanation:
draw the lines for both equations and that will be by finding any points in the lines:
1. sub any value for x to find y in the equation (y=-x+3) :
When x=0 ⇒ y=-0+3, y=3 (the point is: (0,3)When x=1 ⇒ y= -1 +3 , y=2 (the point is: (1,2)When x=2 ⇒ y=-2+3, y=1 (the point is: (2,1)When x=-1 ⇒ y=-(-1)+3, y=4 (the point is: (-1,4)When x=-2 ⇒ y=-(-2)+3, y=5 (the point is: (-2,5)plot the points in the graph and match them to get the first line for equation(1).
2. sub any value for x to find y in the equation (y=-3x-1) :
When x=0 ⇒ y=-3(0)-1, y=-1 (the point is: (0,-1)When x=1 ⇒ y=-3(1)-1, y=-4 (the point is: (1,-4)When x=2 ⇒ y=-3(2)-1, y=-7 (the point is: (2,-7)When x=-1 ⇒ y=-3(-1)-1, y=2 (the point is: (-1,2)When x=-2 ⇒ y=-3(-2)-1, y=5 (the point is: (-2,5)Now again plot the points in the same graph and match them to get the second line for equation(2).
When you finish you will have two lines drawn in a graph, the solution will be were the two points intercept, and that will be:
A(-2,5)
x= -2 , y=5
(note: you can check your answer by subbing the value of x in both equations and you should get the answer 5 as the value of y)
$1,200 in sales with 4% commission
Answers
Answer: 48 dollars
Step-by-step explanation:
Ursula surveyed 50 classmates about their favorite ice cream flavors. Each classmate chose one flavor. The results are shown in the circle graph.
How many more of Ursula's classmates chose chocolate than chose vanilla?
A. 8
B. 6
C. 34
D. 16
Answers
Answer:
A
Step-by-step explanation:
8
Answer:
8
Step-by-step explanation:
Find the percent: 50 x 0.42 minus 50 x 0.26 because you find 26 by adding the known and subtracting from 100.
Answer 21-13=8
2k+16=30 i need help with this before March 2nd ASAP
Answers
Answer:
k = 7
Step-by-step explanation:
The goal is to solve for the variable k in this problem.
To do this, we need to get k by itself!
2k + 16 = 30
Start by subtracting the 16 over from the left side to the right
2k + 16 - 16 = 30 - 16
Simplify by subtracting 16 from 16 on the left side (which is 0) and 16 from 30 on the right side (which is 14).
2k = 14
Then finish by dividing both sides by 2 to get k by itself.
[tex]\frac{2k}{2}[/tex] = [tex]\frac{14}{2}[/tex]
Simplify by dividing 2 by 2 on the left side (which is 1) and 14 by 2 on the right side (which is 7).
k = 7
[tex]\huge\text{Hey there!}[/tex]
[tex]\huge\textbf{Equation:}[/tex]
[tex]\mathbf{2k + 16 = 30}[/tex]
[tex]\huge\textbf{Solving for:}[/tex]
[tex]\mathbf{2k + 16 = 30}[/tex]
[tex]\huge\textbf{Subtract \boxed{\bf 16} to both sides:}[/tex]
[tex]\mathbf{2k + 16 - 16 = 30 - 16}[/tex]
[tex]\huge\textbf{Simplify it:}[/tex]
[tex]\mathbf{3k = 30 - 16}[/tex]
[tex]\mathbf{2k = 14}[/tex]
[tex]\huge\textbf{Divide \boxed{\bf 2} to both sides:}[/tex]
[tex]\mathbf{\dfrac{2k}{2} = \dfrac{14}{2}}[/tex]
[tex]\huge\textbf{Simplify it:}[/tex]
[tex]\mathbf{x = \dfrac{14}{2}}[/tex]
[tex]\mathbf{x = 14\div2}[/tex]
[tex]\mathbf{x = 7}[/tex]
[tex]\huge\textbf{Therefore, your answer should be:}[/tex]
[tex]\huge\boxed{\mathsf{k = }\frak{\ 7}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]Consider JKL below. Determine whether each equation is correct. Select correct or incorrect next to each question.
Answers
Incorrect
Incorrect
Correct
From the options equation A and D are correct answers.
What are trigonometric ratios?The sides and angles of a right-angled triangle are dealt with in Trigonometry. The ratios of acute angles are called trigonometric ratios of angles. The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).
In the given triangle JKL, JK=25, JL=7 and LK=24.
We know that, sin θ= Perpendicular/Hypotenuse
tan θ= Perpendicular/Base
A) Now, sin J=LK/JK
sin J= 24/25
B) tan J=LK/JL
tan J=24/7
C) sin K=JL/JK
sin K=7/25
D) tan K=JL/LK
tan K=7/24
Therefore, from the options equation A and D are correct answers.
Learn more about the trigonometric ratios here:
brainly.com/question/25122825.
#SPJ2
Can you guys help me please
Answers
Answer:
a = 42
Step-by-step explanation:
2a + 16 + 80 = 2a + 96
2a + 96 = 180
2a = 84
a = 42
i will mark brainliest!! i need help with 3 and 4
Answers
What is 7/10 x 5/8?
Give your answer in its simplest form.
Answers
The answer is 7/16
Graph the inequality in the coordinate plane y<1
Answers
The graph should include a shaded area to show y < 1
Answer:
picture
Step-by-step explanation:
Graph y=−4x+3 Please I really need help on it It.
Answers
Answer:
Download graphing calc it helps a lot <4
what type of angle is ABC help
Answers
Answer:
it is a right angle
Step-by-step explanation:
25+65=90
90 degrees is a right angle
I am so confused, plz help! I will mark brainliest.
Answers
Answer:
-45
Step-by-step explanation:
EIGHTH GRADE MATH PLEASE HELP!!
1. Tickets to the fair cost $7 for children and $14 for adults. On Wednesday, 178 people enter the fair and collected $1848. What number of children and what number of adults attended?
2. Tickets to the fair cost $5 for children and $11 for adults. On Tuesday, 164 people enter the fair and collected $1270. What number of children and what number of adults attended?
Answers
Answer:
1, is So this means the answer is 81 children and 96 adults.
2, 250 $5 tickets and 100 $11 tickets were sold
Step-by-step explanation:
--- To solve this, you can use quadratics. x + y = 177 and 4x + 11y = 1380 are the equations to solve for x and y. 177 is the total amount of people who entered the fair, and 1380 is the total money earned. x is the amount of children entered, while y is the amount of adults entered. If we were to do 4(x + y = 177), the equation would become 4x + 4y = 708. Then, we minus the 2 equations together, eliminating the x so we can solve for y. So, the final equation is 7y = 672, meaning y = 96. If we bring this into the first equation, x + y = 177, we can find that x = 81.
