3(2x - 1) + 2(x + 5) = 47
6x - 3 + 2x + 10 = 47
6x + 2x = 47 + 3 - 10
8x = 40 / : 8
x = 5 ← the end
Answer:
x = 5
Step-by-step explanation:
[tex]3(2x - 1) + 2(x + 5) = 47[/tex]
[tex]6x - 3 + 2(x + 5) = 47[/tex]
[tex]6x - 3 + 2x + 10 = 47[/tex]
[tex]8x - 3 + 10 = 47[/tex]
[tex]8x + 7 = 47[/tex]
[tex]8x = 47 - 7[/tex]
[tex]8x = 40[/tex]
[tex](8x \div 8 = 40 \div 8 = x = 40 \div 8 )[/tex]
[tex]x = 5[/tex]
Please help on the question below
Any help is appreciated, thank you:)
Answer:
Here is your answer...
Hope it helps
ABC is an isosceles triangle: AC = 13cm. What is the length of AB?
AC=13cm
[tex]\\ \sf\longmapsto AB[/tex]
[tex]\\ \sf\longmapsto AC[/tex]
[tex]\\ \sf\longmapsto 13cm[/tex]
Is the following irrational or rational?
ILL GIVE BRAINLIEST
6.4
2.178046372849
-2
I really need some help again
How do you translate "Twelve decreased by a quarter of number, x. in a variable expression
Answer:
12 - (¼*x)
Step-by-step explanation:
If something is "decreased by" in mathematics we are looking at a minus sign (-).
For instance 5 decreased by 2 is 5 - 2
[tex]\frac{1}{3} (21y + 39) = -36[/tex]
1/3(21y+39)=-26 can be simplified into
7y +13 = -26
Next, subtract 13 from both sides
7y= -39
Now divide both sides by 7
Your answer is y=-39/7
Answer:
y = -7
Step-by-step explanation:
1/3 (21y+39) = -36
Distribute
7y +13 = -36
Subtract 13 from each side
7y+13-13 = -36-13
7y = -49
Divide each side by 7
7y/7 = -49/7
y = -7
If [tex]f(x)=3^x[/tex], prove that [tex]f(x) + f(x+1)=4f(x)[/tex]
[tex]$f(x)+f(x+1) \stackrel{1}{=} 3^x+3^{x+1} \stackrel{2}{=} 3^x+3^x\cdot3^1\stackrel{3}{=}3^x+3\cdot3^x\stackrel{4}{=}4\cdot3^x\stackrel{5}{=}4\cdot f(x)[/tex]
1) Substitution from definition.
2) We use [tex]$x^{a+b}=x^a\cdot x^b[/tex]
3) We are changing the order of 3 and [tex]3^x[/tex].
4) We add 1 and 3 [tex]3^x[/tex] and we get [tex]4\cdot 3^x[/tex]
5) Substitution from definition (but the other way than at the beginning).
Which of the following is most likely the next step in the series?
A.
B.
C.
D.
Answer:
A
Step-by-step explanation:
If you look at the number of dots in each circle, it is increased by 1 every picture so if we have 4 in the third circle, then we will have 5 in the fourth picture. Option A is the only option that contains 5 dots.
Best of Luck!
Sarah counted the number of tiles at each step and made a table. She explained that the
number of tiles in each figure was always 3 times the step number minus 2.
Create an equation that fits Sarah's way of seeing the relationship.
PLS HELP DUE IN 10 min!!
Answer:
n(number of tiles) x 3 - 2
Step-by-step explanation:
times mean multiplication and minus mean subtraction, I hope this helps.
An equation is formed of two equal expressions. An equation that fits Sarah's way of seeing the relationship is y = 3x - 2.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
As stated by Sarah that "the number of tiles in each figure was always 3 times the step number minus 2", this can be written in the form of an equation as shown below.
Number of tiles = [3 × (Number of steps)] - 2
Assume that the number of tiles is represented by y, while the number of steps can be written as x. Therefore, we can write the equation as,
y = 3x - 2
Now, let's check the equation,
When the number of steps is 3, the number of tiles is 7.
y = 3(3) - 2
y = 9 - 2
y = 7
Since the number of tiles is the same, therefore, the equation is correct.
Hence, an equation that fits Sarah's way of seeing the relationship is y = 3x - 2.
Learn more about Equation here:
https://brainly.com/question/14686792
#SPJ2
Sam has a bookcase with n shelves there are 13 books on each shelf using n wrote an expression for the total number of books
Answer:
13n
Step-by-step explanation:
13*n
Determine whether each pair of segments is congruent.
Plz can someone help me
Answer:
23. Congruent
24. Not congruent
Step-by-step explanation:
23. KJ and HL:
Since the side lengths are both 4 in, these segments are congruent.
24. EH and FG:
Since the side lengths are different numbers (0.45 cm and 0.5 cm), these segments are not congruent.
At the beginning of the school year, Jamie had
$500 in her savings account. She wants to have at
least $200 left in the account at the end of the
school year. Each week, she withdraws $30 for
spending money. To determine how many weeks
she can spend $30, Jamie wrote and solved this
inequality
Answer:
Hmmm let me solve then I will answer
Solve for x: -2 - 4 > 8
(9th grade Algebra 1)
Answer:
A
Step-by-step explanation:
-2x-4>8
-2x>12
-x>6
x<-6
Answer:
[tex]x < - 6[/tex] (first option)
Step-by-step explanation:
[tex] - 2x - 4 > 8[/tex]
[tex] - 2x > 8 + 4[/tex]
[tex] - 2x > 12[/tex]
[tex] = x < - 6[/tex]
Simplify the expression to a polynomial in standard form:
(3x2 - 4x – 5)(-2x2 + 2x + 2)
Answer:
- 6[tex]x^{4}[/tex] + 14x³ + 8x² - 18x - 10
Step-by-step explanation:
Given
(3x² - 4x - 5)(- 2x² + 2x + 2)
Each term in the second factor is multiplied by each term in the first factor, that is
3x²(- 2x² + 2x + 2) - 4x(- 2x² + 2x + 2) - 5(- 2x² + 2x + 2) ← distribute parenthesis
= - 6[tex]x^{4}[/tex] + 6x³ + 6x² + 8x³ - 8x² - 8x + 10x² - 10x - 10 ← collect like terms
= - 6[tex]x^{4}[/tex] + 14x³ + 8x² - 18x - 10
convert 550 minutes into weeks
Answer:
0.0545635
Step-by-step explanation:
divide the time value by 10080
Please help me out, giving brainliest. Show your work pls!
Answer: The solution is in the attached file below
Step-by-step explanation:
Typical grade distribution for a geometry course with 35 Students
Answer:
if this is a legitimate math homework question and
not just a question about you personal math class...The answer expected would be calculated using the empirical normal distribution rule (68-9599.7):
1 - F
5 - D's
23 C's
5 - B's
1 - A
Step-by-step explanation:
Hurry I'm timed please
a man bought a 4 kg apples at the rate of rs 50 per kg he sold 3 kg apples at the rate of rs 65 and 1 kg apples at rs 40 find his profit or loss amount.
Answer:
35rs of profit
Step-by-step explanation:
4*50=200rs- he spent
3*65+1*40=195+40=235rs- he got
235-200=35rs of profit
i really need this answer
Joe was driving on the highway a car ahead of him was driving far below the speed limit so he decided to pass. In the first second he gained(gained means to get nearer to something you are chasing) 5m on the car and as he accelerated he gained 1.5 times as much distance in each second as he had the second before. If there was 30 m between joe and the car he was passing then how long did it take him to pass
Answer:
537/100s.
Step-by-step explanation:
Give the geometric representation of 2x+ 1= x-4 as an equation in (a) one variable (b) two variables
please help
Answer:
Step-by-step explanation:
2x+1=x-4
2x-x= -4-1
1x=-5
x=-5Y is between X and Z. T is
between Y and Z. If XZ = 90, YT = 22, and XY = TZ, what is XT?
(step-by-step pls)
The length and breadth of a retanlge are (2x+y) cm (x+2y)cm respectively. Find its area.
Answer:
2x^2+5xy+2y^2
Step-by-step explanation:
Area = l*b
Area = (2x+y)*(x+2y)
Area = 2x^2+5xy+2y^2
5 x (-4)-((-6)-7)
(The X means to multiply)
Answer:
[tex] - 62[/tex]
Step-by-step explanation:
[tex]5 \times ( - 4) - (( - 6) - 7) \\ = - 20 - 42 \\ = - 62[/tex]
Hope it is helpful.....17. In a speech class, students must give a final speech for their exam. The speech can be 15 minutes, or within that time by 4 minutes. Write an absolute value equation that represents the minimum and maximum lengths of the final speech
Answer:
| t − 15 | = 4
Step-by-step explanation:
absolute value is weird and i see no use for it
This three pleaseee
Answer:
Hi. 6.2 is rational
Step-by-step explanation:
Irrational numbers never end. They go on forever.
x^3*x^8=x^11 (When you multiply, add the powers)
A.
absence of a cell wall
B.
absence of a nucleoid
C.
presence of chloroplast
D.
presence of a vacuole
hi <3
i'm not sure how many options you are allowed to select but the answers would be option C and D, as both of these structures are found in plant cells and not animal cells
hope this helps :)
Brier has 2 hours to finish a slide presentation. It takes him 1/6 hours to create each slide. How many slides can he creat in 2 hours?
Answer:
12 slides
Step-by-step explanation:
If he can make 6 slides in each hour, and he has 2 hours, take 6x2=12 because there are 2 hours.
1/5 part of pole is inside the mud, 2/3 part is inside the water and the remaining length of 10m is above the surface of the water. Find the length of the pole .
Answer:
75m
Step-by-step explanation:
let X be the length of the pole1/5 of the pole is in water so =1/5X2/3 of the pole is in mud= 2/3X10m is above the polelength of the pole (X)= length of pole in mud+length of pole in water+length of pole in airX(m)=1/5X+ 2/3X+10X- 13/15X=102X= 10x15X=75m