Answers
Answer:
see below
Step-by-step explanation:
3x+9 = 15
Subtract 9 from each side
3x+9-9=15-9
3x = 6
Divide by 3
3x/3 = 6/3
x=2
Check
3*2+9 = 15
6+9 =15
15=15
Related Questions
2x²-2x=12
quadratic equation
Answers
You can solve with many ways but I'll do this one instead. Move 12 to the left side and change from positive to negative.
[tex]2x^2-2x-12=0\\[/tex]
Then divide by 2 whole equation.
[tex]\frac{2x^2-2x-12}{2}=\frac{0}{2}[/tex]
Simplify, as we get [tex]x^2-x-6=0[/tex]
We can either use Quadratic Formula or Factoring the Polynomials. It depends but since the polynomial aren't that hard to factor because it doesn't have that many numbers in value. So using factoring will be faster.
From [tex]x^2-x-6=0[/tex] we can factor as -
[tex](x-3)(x+2)=0\\x-3 =0, x+2=0\\x=3, x=-2\\(x=3,-2)#[/tex]
Thus, the value of x is 3 or -2. So x = 3, -2 is the answer.
Note that we can also use Quadratic Formula to solve the equation, however that will take longer than factoring then solve the equation.
PLEASE HELP ME ANSWER THIS
What is cos 60?
Answers
Answer:
The angle with measure 60° is one of those angles that has a well-known cosine value: cos(60°) its C= 1/2.
Step-by-step explanation:
Find the equation of the line with slope −2 which goes through the point (9,−7).
Answers
Answer:
Here,
slope (m)=-2
y- intercept (c)=-7
Now,
The equation of the line;
or,y=mx+c
or,y= -2x-7
or,2x+y+7=0 is the required equation....
Answer: y = -2x +11
Step-by-step explanation:
help please below is the Screen shot of what I am working on
Answers
Answer:
i think the answer is #2 or B.
Step-by-step explanation:
ad+cb over bd ad+cb/bd
Last year’s computer models are discounted 20%. What was the original price to the nearest dollar of a computer that now costs $1,480?
$1,184
$1,500
$1,510
$1,850
Answers
Answer:
x=$1850
Step-by-step explanation:
Let the original price of the computer model is x.
Last years discount is 20%
We need to find the original price if the computer now costs $1480.
ATQ,
[tex]x-20\%\ \text{of x}=1480\\\\x-\dfrac{20x}{100}=1480\\\\x-\dfrac{x}{5}=1480\\\\\dfrac{4x}{5}=1480\\\\x=\dfrac{1480\times5}{4}\\\\x=\$1850[/tex]
So, the original cost of the computer model is $1850.
Which of the following sets represents the domain of the function shown?
{(2, 7}, (15, 13), (21,-4), (24, 18). {-4, 2, 7, 13, 15, 18, 21, 24}
{(7, 2), (13, 15), (-4, 21), (18, 24)}
{2, 15, 21, 24}
{-4, 7, 13, 18}
Answers
Answer:
(2, 15, 21, 24)
Step-by-step explanation:
Domain the x values
‼️‼️Evaluating expressions with integers‼️‼️ PLEASE I NEED THEM NOW ITS 9:19 AND ITS DUR AT 8:00 AM I NEED SLEEP ANYONE PLEASR HELP‼️‼️
Answers
1a = 0
1b= 9/8
2a= -49
2b= -1/6
3a= 5/2
3b= 1
4a= 1/10
4b= 4/3
5a= -1/2
5b= -4/7
1b - 9/8
2a - -49
2b - -1/6
3a - 2 1/2
3b - 1
4a - 1/10
4b - 1 1/3 or 4/3
5a - 1/2
5b - -4/7
Solve. Enter your answer as an inequality.
4x + 5 < 5x + 3
w
Answers
Step-by-step explanation:
4x+5<5x+3
4x=-5<5x=-3
x=-5/4<x=-3/5
1.25<0.6
-2(k+12)=2k + 16
Show work
Answers
Answer:
k=-10
Step-by-step explanation:
[tex] - 2k - 24 = 2k + 16[/tex]
[tex] - 2k - 2k = 16 + 24[/tex]
[tex] - 4k = 40[/tex]
[tex]k = 40 \div - 4 = - 10[/tex]
i think this is the answer
El primer término en una secuencia es 5 y el quinto término es 17. ¿Cuál es la diferencia común
Answers
The common difference of this Sequence is 12.
In mathematics, a sequence refers to an ordered list of numbers. When working with sequences, there are various concepts and formulas that are used to calculate different aspects of the sequence. One such concept is the common difference. Let's explore what the common difference is and how to calculate it.
What is the common difference?
The common difference in a sequence refers to the difference between any two consecutive terms in the sequence. For example, in the sequence 2, 4, 6, 8, 10, the common difference is 2. We get this value by subtracting the second term (4) from the first term (2) and so on.
How to find the common difference of a sequence?
To find the common difference of a sequence, you need to know at least two terms of the sequence. You can then subtract one term from the other to calculate the common difference.
Let's apply this to the given sequence, which has a first term of 5 and a fifth term of 17. To find the common difference, we can subtract the first term from the fifth term as follows:
17 - 5 = 12
Therefore, the common difference of this sequence is 12.
For more questions on Sequence .
https://brainly.com/question/26263191
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Do I have the right anwer if not what is it
Answers
Answer:
yes
Step-by-step explanation:
its rightsss
Answer:
Yes
Step-by-step explanation:
Classify the four angles of the quadrilateral
Answers
Answer:
<A= right
<B= obtuse
<C= acute
<D= obtuse
Step-by-step explanation:
If there are 640 football stickers needed to fill my book and I have 80% of the stickers
I need. How many more stickers do I need to collect?
Answers
Answer:
160 more stickers
Step-by-step explanation:
640 divided by 4 is 160
160 times 5 is 800
800 minus 640 is 160
you need 160 more stickers
Pls help xdcdcdcdcdcd
Answers
Answer:
A
Step-by-step explanation:
YESYESYESYESYESx85
what is the number in scientific notation? 0.000000000093 enter your answer in the box.
Answers
Answer:
9.3 × 10^-11
Step-by-step explanation:
ASAP HELP PLEASE WILL GIVE BRAINLIEST
The perimeter of a rectangle
is 40 centimeters. The length of the rectangle can be represented by (2x + 1), and its width can be represented by (x - 5). What is the
length of this rectangle in centimeters?
Answers
Answer:
17cm
Step-by-step explanation:
equation:
[tex]2(2x + 1) + 2(x - 5) = 40 \\ x = 8 \\ [/tex]
substitute 8 into
[tex](2x + 1)[/tex]
[tex]2(8) + 1 = 17[/tex]
[tex]lenghth = 17cm[/tex]
Find the value of X
40°
(12x-8)
please help I have 10 mins left on my test
Answers
Answer:
B.4 12x-8 would be 12x_-8=40 this is because 12x-8 is congruent to the 40 degree angle. so what -8 is 40? 48 12x_=48 x=4 12x4=48 48-8 is 40
plz let me know if i am wrong mark brainliest if right
Step-by-step explanation:
How long is 10:36 to 11:23
Answers
Answer:
47 minutes
Step-by-step explanation:
Answer:
47 mins hope this helps
Step-by-step explanation:
help as soon as possible pleaseee
Answers
Answer:
(3x + 2)(x-4)
Step-by-step explanation:
3x² - 10x - 8 = 0
(splitting the middle term)
3x² -12x + 2x -8 = 0
3x(x-4) + 2(x-4) = 0
(3x + 2)(x-4) = 0
(3x + 2)(x-4) is the correct answer (option a)
Please help and give the explanation!!
Answers
Answer:
x = 11
Step-by-step explanation:
If A were parallel to B, alternate exterior angles would be congruent.
Equation:
5x + 9 = 6x - 2
9 + 2 = 6x - 5x
11 = x
Hope this helps!
Let me know if you clarification :)
Answer:
x = 11
Step-by-step explanation:
If both lines were parallel, then the angles with labels would be alternate angles between parallel lines, which will make them equal in measure.
so the measure of one (5x+9) would equal the measure of the other one (6x-2) which in math terms becomes:
5 x + 9 = 6 x - 2
subtract 5x from both sides:
9 = x - 2
add 2 on both sides
x = 11
Plzzzzzzzz help right answer gets brainly
Answers
Answer:
20
Step-by-step explanation:
To figure out k, divide both sides by 5. Cancel out 5 from 5k, and you’re left with k=100/5
Simplify, and you’re left with k=20
11.07 pt = mL can i have help
Answers
Answer:
6290.652Step-by-step explanation:
Volume
11.07 Pint
= 6290.652 Milliliter
Formulafor an approximate result, multiply the volume value by 568
i wish this is the ans ur looking for.......1.6 Write the following numbers in order of size. Start with the smallest number.
0.5, 0.14, 0.092, 0.33
Answers
3x² + 2x + 2 + 4x² + 5
Answers
Answer:
7x^2 + 2x + 7
Hope this helps :)
Answer:
7x²+2x+7
Step-by-step explanation:
Hope this helps. Plz give brainliest.
Please answer as fast as you can.
what is 30 + 5(2x -1) + 20
Answers
Answer:
10x + 55
Hope this helps :)
the answer is 40 brainliest plz
I need to find the answers to 5-9 sorry for bad quality
Answers
Answer: 5: y=7/8x+1
6: y=-10x
7: y=2.5x-7
8: y=1.2x
9: y=-5x-8
Step-by-step explanation:
There you go. You are welcome.
Ron has 198 feet Of fencing to make a rectangular garden in his backyard. He wants the length to be 19 feet more than the width. Find the width?
Answers
Answer:
68.5
Step-by-step explanation:
u do 198 divided by 4 then add 19 to the awnser that u got
Answer:
width = 40 feet
Step-by-step explanation:
If w = width, then l = 19 + w
l = 19 + w
2l + 2w = 198
"Substitute 19 + w as l in the second equation"
2(19 + w) + 2w = 198,
38 + 2w + 2w = 198,
38 + 4w = 198,
4w = 198 - 38 = 160,
w = 160/4 = 40 feet
=> Solution: width = 40 feet
Find and simplify as much as possible. Let f(x)=x^2+2 be for f(x+h)-f(x)/h
Answers
Answer:
In picture
Step-by-step explanation:
Use the given functions to set up and simplify
25% of a spring basket is peeps.
The total number of items in the
basket is 20. How many of the
items are peeps?
Answers
Answer:
5
Step-by-step explanation:
25% of 20=5
Answer:
5 items are peeps
Step-by-step explanation:
25% is 1/4 of 100%, so divide 20 (your total # of items) by 4, and you get 5, which is 25% of your 20 spring basket items.
3x-2y=2
i always get mixed up in the final answer y=1 -3/2x 0r y= 1 +-3/2x ?
Answers
Answer:
Both answers are correct
Step-by-step explanation:
both y = 1 - 3/2x and y = 1 + -3/2x are correct answers, it is just that y= 1 - 3/2x is the simpler version. Adding a negative number is the same as subtracting a positive.
y=3/2x-1
Reasoning:
-3x was negative initially, but dividing by -2 made it positive
