Solve algebraically 7a=63
Answers
Inverse operation
7a/7 = 63/7
a= 63/7
a= 9
Answer: a = 9
Isolate the Variable by dividing. Of course, you must do it on the other side of the equatoin
7a / 7a = 63 / 7
a = 9.
7 (9) = 63
Related Questions
Three consecutive integers have a sum of 54 Find them
Solve using quadratic formula x^2+8x=7
Solve the following: -3x + 7(x + 5) = 5x + 38please explain!
Last year, there were 380 students at woodland middle school.This year, the student population will increase by 5%. What will be the school's increased student population
Answers
Answer:
60m/per minute
Step-by-step explanation:
300/5=60
Hope this helps
Please mark me as brainliest
~Courtney
Answers
The expression equivalent to (7x-5)-(3x-2) is 4x-3
What is an expression?
An expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.
Given is an expression (7x-5)-(3x-2), we need to find an expression equivalent to it,
= (7x-5)-(3x-2)
Opening the brackets and multiply by - sign,
= 7x-5-3x+2
Combine the like terms,
= 4x-3
Hence, the expression equivalent to (7x-5)-(3x-2) is 4x-3
Learn more about expressions, click;
#SPJ2
Answers
make proportion
x$-100%
36$-90%
x*90=100*36
x=3600/90
x=40$
Answer:
$40
Step-by-step explanation:
so first you do 34792x3957935 then you get 137704474520 and because it is 10% you make it .04 making that 40$
Answers
x² - 16 = 0
x² = 16
√x² = √16
x = 4 or -4
Question 7
x² + 3x - 54 = 0
Factorizing
Find two numbers that add to make 3x and multiply to make 54
Write out the factor of -54 in pairs
1, -54
-1, 54
2, -27
-2, 27
3, -18
-3, 18
4, -16
-4, 16
6, -9
-6, 9
Then find the pair that, when added = +3 (in bold)
-6 + 9 = 3
x² + 9 - 6x - 54 = 0
x(x + 9) -6(x + 9)
Use the (x + 9) and the coefficient of these brackets to make double brackets.
(x+9)(x-6) = 0
If the product of two terms =0, at least one must equal 0
x + 9 = 0
x = -9
x - 6 = 0
x = 6
x = -9 or 6
Question 8
2x² -11x - 6 = 0
First, multiply the coefficient of x² by the value of c (the number on its own)2 x -6 = 12
This time, find factors of -12 that equal -11
1, -12
-1, 12
2, -6
-2, 6
3, -4
-3, 4
The pair is in bold
1 + -12 = -11
2x² -12x + x - 6
Split down the middle and factorise in singe brackets
2x(x - 6) 1(x - 6)
Now use the brackets pre-made (x - 6) and put together what is in front of them (2x +1)
(2x + 1)(x - 6)
If the product of two or more terms = 0, at least 1 must equal 0
2x + 1 = 0
2x = -1
2x/2 = x -1/2 = -0.5
x - 6 = 0
x = 6
x = -0.5 or 6
Question #6:
They expect you to remember that the difference
of two squares can be factored as
(the sum of the squared numbers) times (their difference).
So [ x² - 16 = 0 ] can be written as (x + 4) (x - 4) = 0 .
Now, a rule that you've used hundreds of times before
and you'll use thousands of times again:
If the equation says that the product of two things is zero,
then the equation is true if EITHER of them is zero.
So ...
(x+4) = 0 gives you one solution,
and (x-4)=0 gives you the other solution.
__________________________________
Question #7:
Factor the left side of the equation.
(x + 9) (x - 6) = 0 .
Now, use a rule that you heard somewhere VERY recently:
If the equation says that the product of two things is zero,
then the equation is true if EITHER of them is zero.
So ...
(x + 9) = 0 gives you one solution, and
(x - 6) gives you the other one.
_______________________________________
Question #8:
Factor the left side of the equation:
(2x + 1) (x - 6) = 0
Now use the golden rule that you've memorized by now:
If the equation says that the product of two things is zero,
then the equation is true if EITHER of them is zero.
So ...
(2x + 1) = 0 gives you one solution,
and (x - 6) = 0 gives you the other one.
A parallelogram is a rhombus.
B.
A rhombus is a quadrilateral.
C.
A trapezoid is a square.
D.
A square is a rectangle.
Answers
~JZ
Hope it helps
2. Give 3 numbers that would work for the value of x if x < 1
3. Give 3 numbers that would work for the value of x if x ≤ -2
Write these statements as inequalities: Use symbols ≤ ≥ < or >.
4. I have at least 4 homework assignments tonight. ___________
5. You must be at most 10 years old to swim in the baby pool. ____________
6. I can spend a maximum of $20 on lunch today. ___________
Answers
Answer:
1: No x < 4 is not the same thing as 4 > x.
2: 0, -2, -10
3: -2, -4, -22
4: x ≥ 4
5: x ≤ 10
6: x ≤ $20
Step-by-step explanation
Do you need an explanation?