Answer:
I think it is addition property
This is Adeles solution for the equation x^2+8x- 9 = 0 Step 1 x^2 +8x = 9 Step 2 x^2 +8x + 16 = 9 + 16 Step 3 ( x + 4 ) ^2 = 25 Step 4 x + 4 = 25 or x + 4 = - 25 Step 5 x = 21 or x = - 29. Where did Adele make her mistake? What are the solutions to this equation? Show all of your work. 2. Which would be the best method to use to solve the following equation. Explain your reasoning. A x^2 - 49 = 0 B. x^2 - 3x - 4 = 0 C. x^2 - 2x - 6 = 0
Answer:
Adeles forgot to square root 25 in step 4 therefore the solutions would be 1 and -9
Step-by-step explanation:
Equation : x² + 8x - 9 = 0
Step 1 : x² + 8x = 9
Step 2 : x² + 8x + 16 = 9 + 16
Step 3 : ( x + 4 )² = 25
Step 4 : x + 4 = 25 or x + 4 = - 25
Step 5 : x = 21 or x = - 29.
Raul wants to buy a new bike from a store having a 10% off sale on
all bikes. The bike he wants has a sale price of $135. Write and solve
an equation to find the original price, b, of the bike.
by
Answer:
p = $150
Step-by-step explanation:
Let p represent the original price. Then 10% of that is the discount: 0.10p.
The price after discount is 90% of the original price, or (1.00-0.10)p = 0.90p = $135. We next solve this equation for p: 0.90p = $135, or p = $150.
The following expression represents the profit made by John as he mows
lawns: P = 20L - 100
Which description correctly interprets each part of the expression?
Answer:
P is price per lawn, 20 is the money made per lawn, L is the number of lawns mowed, 100 is his initial cost.
Step-by-step explanation:
What are the solutions to the equation: (x - 6)(x + 5) = 0?
answers
5
-5
6
-6
no joke answers or will be reported
Answer:
Step-by-step explanation:
Multiplying anything by zero equals zero. So if either term equals zero the equation is true.
(x-6)(x+5)=0
So if x=-5 or 6 the above is true.
x=(-5,6)
Answer:
the answers I found are 6 and -5
if you separate the two and equate them to 0 you will get the answers like this :
x - 6 = 0. or x + 5 = 0
x= 6. or x = -5
What is the slope of the line ?(khan academy)
Answer:
The slope of the line is 2.
Step-by-step explanation:
Slope of a line:
Suppose that we have two points. The slope of the line is given by the change in y divided by the change in x.
In this question:
Points (0,0) and (1,2)
Change in y: 2 - 0 = 2
Change in x: 1 - 0 = 1
Slope: [tex]m = \frac{2}{1} = 2[/tex]
The slope of the line is 2.
PLS HELP ASAP!its due very soon so tysm if u help me :)
Answer:
23
Step-by-step explanation:
Use the part/whole = %/100.
You have that whole = 115 and % = 20, so that would be:
[tex]part/115=20/100[/tex]
simplify & solve:
[tex]part/115=1/5[/tex]
multiply both sides by 115
[tex]part=115/5\\part = 23[/tex]
find the solution(s)
y= x + 1
y= x² - 4x + 5
Answer:
1. Many possible solutions, two solutions would be: (-1,0) and (1,0)
2. x = −
2
± i
Step-by-step explanation:
For the first equation, since its linear, there are many possible solutions!
two solutions would be: (-1,0) and (1,0)
For the second one, replace y with 0 and solve
x = −2 ± i
Hope i helped, brainliest would be appreciated
Have a nice day!
-Aadi x
Please help ASAP
I’ll mark Brainliest
What’s the total and lateral surface area for the figure?
Answer:
The total is 20 and the lateral surface is 1008 I think
A furniture rental store charges a down-payment of $100 and $72.50 per month for a table. Hilde paid $535 to rent the table. Solve 72.50n + 100 = 535 to find the number of months Hilde rented the table.
Answer:
6 months
Step-by-step explanation:
First, subtract 100 from both sides
72.50n + 100 = 535
72.50n = 435
Divide each side by 72.50
n = 6
So, Hilde rented the table for 6 months
PLS HELP WILL GIVE BRAINLESS
Answer:
1a. 3/8
1b. 4/12-1/3
Step-by-step explanation:
to get the answers you have to find a common denominator and then add them
Answer:
The answer would be
a) 3/8
b) 1/3
which is a true statement about 10 days of production
Answer:
At 10 days, no line is above the '0' means no one is producing widgets at 10 days point. Since the y axis represents number of widgets produced, this means none of the plants have produced more than 0 widgets yet.
What is 3000×3000 4000
Answer:
I think the answer is 12,0000
Answer:
3000x3000=9,000,000
Step-by-step explanation:
3x3x1,000,000
In AGE and OLD, GAE - LOD, and AE = OD. To prove that AGE and OLD are congruent by SAS, what other information is needed?
What is 39.79949748 rounded to the nearest hundredth?
Answer:
[tex]Number = 39.80[/tex]
Step-by-step explanation:
Given
[tex]Number = 39.79949748[/tex]
Required
Approximate (to the nearest 100th)
This means that, we approximate at the second digit after the decimal.
So:
i.e,
Number = 39.79 [Begin approximation] 949748
The first digit after [Begin approximation] is then approximated using the following rule:
[tex]0 - 4 \approx 0[/tex]
[tex]5 - 9 \approx 1\\[/tex]
Since 9 falls in [tex]5 - 9 \approx 1\\[/tex] category, the number becomes:
[tex]Number = 39.[79+1][/tex]
[tex]Number = 39.80[/tex]
x3+43-12x2+x30 (x-6) (x+2)
solve it.
The local park has a circular pond with a radius of 9 feet. What is the pond's circumference?
Answer:
Using 3.14 as pi, the answer would be 56.52, and using just pi (as in the input on a calculator) would be 56.54867.
Step-by-step explanation:
The equation for circumference of a circle is C = πd, C representing the circumference and d representing the diameter. Since the equation shows the radius, the equation can also be C = 2πr, since the radius is half of the diameter. Multiply nine by two to get eighteen. 18 times 3.14 = 56.52.
A summer camp rewards campers and counselors with badges. The camp orders 200 badges. The plan to give 25 badges to counselors. They ordered at least 3 badges for each camper. Hie many campers can there be at the camp
Answer:
Step-by-step explanation:
200-25= 175 175÷3= 58[tex]\frac{1}{3}[/tex]There are 58 campers
There would be 58 1/3 campers at the camp.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. Unitary method is a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit. It is a method that we use for most of the calculations in math.
We are given that camp orders 200 badges. The plan to give 25 badges to counselors and ordered at least 3 badges for each camper.
Therefore, the difference would be;
200-25= 175
Then we get;
175÷3= 58 1/3
Hence, There are 58 1/3 campers
Learn more about the unitary method, please visit the link given below;
https://brainly.com/question/23423168
#SPJ3
Which statement about the solution to the system and its justification is true? Please help!!
Answer:
c i think
Step-by-step explanation:
explain the answer to 481.5÷45
Answer:
10.7
Step-by-step explanation:
10.7
- 45
31
-00
315
-315
00
Find the area of the triangle. Enter your answer in the box.
3 m
8 m
m2
(Please help)
1/2Base×height
Step-by-step explanation:
1/2×8×3
=4×3
=12
What is the solution to the system of equations
Y=x+6
Y= -0.5x+3
Answer:
[tex]y = 4 \\ x = - 2[/tex]
I need help the question is what is the are of the composite figure
Answer:
Option 4
Step-by-step explanation:
Area of a trapezoid = [tex]\frac{1}{2}(b_1+b_2)h[/tex]
Here, [tex]b_1[/tex] and [tex]b_2[/tex] are the bases and 'h' is the height between the bases.
Area of the composite figure = Area of two trapezoids given
= [tex]\frac{1}{2}(12+12)14+\frac{1}{2}(25+31)11[/tex]
= [tex]\frac{1}{2}(24)(14)+\frac{1}{2}(56)(11)[/tex]
= 168 + 308
= 476 square ft
Option 4 is the answer.
4) An arithmetic sequence has a 7th term of 54 and a 13th term of 94. Find the common difference
Please answer!!
Answer:
20/3
Step-by-step explanation:
Every nth term takes the form of a + n*d, where a is the first term.
So 7th term = (54 = a + 7d), 13th term = (94 = a + 13d).
equate them both:
94 - 13d = 54 - 7d
40 = 6d
d = 40/6
Please help me I am in need of help!
Answer:
answer is currents hope this helps
Step-by-step explanation:
Find the inverse of the function.
f(x) = -3x + 7
Zander found these coins in his Couch
Answer:
91 cents
Step-by-step explanation:
3 quarters+3 nickel+1 penny=91 cents
Answer:
91 cents
Step-by-step explanation:
3 quarters=75c
3 nickels=15c
1 penny=1c
75c+15c+1c=91 cents
Expand (2x - 5)4 with the help of Pascal's triangle
Answer:
8x-20
Step-by-step explanation:
8x-20
(2x-5)4 2x*4
8x- 4*5
8x-20
Answer:
Answer:(2x-5)4
Answer:(2x-5)42x=20
Answer:(2x-5)42x=20or,x=20/2
°°°x=10
13 points.First Come First Serve!!!!
(=0w0=) Little one, welcome! Aaliyah!
Find the product of 5/3 with quotient of 2/11 and 4/11
Answer:
5/6
Step-by-step explanation:
quotient of 2/11 and 4/11 is 22/44 or 1/2
5/3 · 1/2 = 5/6
i’m confused and need help fast please.
Answer:
C) 48.3
Step-by-step explanation:
The lines are parallel, meaning that when the third line is intersecting them both, the angles formed will be exactly the same. The top angle that is to the right is 25°, meaning that he bottom angle to the left is 25°. All that is left is to find the last two angles in order to find out what the answer to the equation is. The 25° angle is next to a triangle causing the lines to be flat, or 180°.
180 - 25 = 155
That means the bottom angle to the right is 155. In order to find x, subtract 10 and divide by 3.
3x + 10 - 10 = 155 - 10
3x = 135
3x/3 = 135/3
x = 48.3