Can you help me solve this equation?
Sure
Answer:
x = -2
If the steps aren't belong to the lesson that you want, just tell me the lesson title so I can get the answer for you !!!!
...
The steps
Multiply all terms by (x-3)(x+3) and cancel:
x(x+3)+2x(x−3)=18
3x2−3x=18(Simplify both sides of the equation)
3x2−3x−18=18−18(Subtract 18 from both sides)
3x2−3x−18=0
3(x+2)(x−3)=0(Factor left side of equation)
x+2=0 or x−3=0(Set factors equal to 0)
x=−2 or x=3
Check answers. (Plug them in to make sure they work.)
x=−2 (Works in original equation)
x=3 (Doesn't work in original equation)
8. The sum of two numbers is 15. Twice one number equals 3 times the
other. Find the numbers.
HURRY please The length of the rectangular sticker is 5.38 cm and the width is 3.5 cm. What is the area of the sticker?
one seventh of what number is five sixths?
Answer:
I think it's 56 is the answer
How do find the circumference?
Answer:
24π
Step-by-step explanation:
Circumference of a circle = πd
d = diameter
Step-by-step explanation:
so the formula for circumference is 2 pie r
d= 24
so obviously r=12
2×22/7×12= 75.42 and
ans= 24pie
PLS HELP OF AREA ON TRIANGLE!!!
Answer:
Area for Triangle is: 1/2bh or bh/2
Area for Trapezoid (As shown in picture):
1/2h(b1+b2)
You’d have to do 1/2 x 18(15+37) for the quesyion in the picture
Hope this helped!
Answer:
[tex] area = (\frac{1}{2} (a + b) \times h) \\ \frac{1}{2} \times (15 + 37) \times 18ft \\ \frac{1}{2} \times 52ft \times 18ft \\ divide \: 52 \: by \: 2 \\ 26ft \times 18ft = 468 {ft}^{2} \\ answer = 468 {ft}^{2}[/tex]
Write
11/4 as a mixed number.
Give your answer in its simplest form.
Answer:
2 3/4 (two and three fourths)
Step-by-step explanation:
What is the measure of ∠A ?
Geometric mean between 9 and 25
Answer:
the answer is 15
The geometric mean of 25 and 9 is 15 . Example 2: ... So, the geometric mean of the three numbers is the cube root of their product.
Answer:
15
Step-by-step explanation:
the geometric mean of 2 numbers a and b is [tex]\sqrt{ab}[/tex] , then
geometric mean of 9 and 25 is
[tex]\sqrt{9(25)}[/tex] = [tex]\sqrt{225}[/tex] = 15
I'm struggling with this question on quadratic equations and would like somebody to explain it to me. Thank you!
Hello, sorry for taking half an hour to respond.
a) If x represents the number of students in her class, we have :
The cost of a calculator on website C : 480 : x
The cost of a calculator on website D : 480 : (x+4)
b) We call the price of a calculator on website C as a, and the price on website D is a-6
Let's also call the amount of calculators if we buy on website C as d, and the amount of calculators if we buy on website D as d + 4
We have :
a.d = (a-6)(d+4)
Break the brackets out : ad = ad-6d + 4a - 24
=> -6d + 4a - 24 = 0
Divide both sides by 2
=> -3d + 2a - 12 = 0
=> 2a = 3d + 12
So, d is divisible by 3, and a is divisible by 2 => ad is divisible by 6.
And ad x the amount of students = 480
So, we can conclude that the amount of students is a factor of 80
Let's list out all of them : 1,2,4,5,8,10,16,20,40,80.
If there was 20 students :
The price of each calculator would be : 480 : 20 = 24
If it's 6 cheaper, it would be 24-6 = 18
And she would've gotten 480 : 18 (not divisible)
If you keep replacing like that, you'll eventually get the answer. I don't have time left, so the answer is 16 students. Hope it helps.
how to solve for x in this picture
Answer:
1
Step-by-step explanation:
Ratio between ABC and ADE
BC/DE = AB/AE
1/9 = x/9
x=1
what is it supposed to look like
Which number is between 1.2 and 1.3 ?
Answer:
D) 1.23
Step-by-step explanation:
There are infinitely many numbers that are between 1.2 and 1.3 really, but given the answer choices, D is the correct one.
$13.12 for 9 bottles of soda. What is the unit price? Round to the nearest cent (hundredths place).
P.S. this is due today
Answer:
$1.45 is the unit price
Step-by-step explanation:
$13.12 total / 9 bottles = $1.45 per bottle
Which of the following graphs shows the solution set for the inequality below? |2x + 2| > 4
Answer:
Attached is what the graph should look like.
Step-by-step explanation:
|2x + 2| > 4
Separate the equations into two different ones:
2x + 2 > 4 2x + 2 < - 4
- 2 - 2 - 2 - 2
2x > 2 2x < -6
/2 /2 /2 /2
x > 1 x < -3
Hope this helps!
Help asap.
Find an equation for g(x) in terms of the function f(x). For example, g(x)=10 f(9x+8)+7.
g(x)=
Answer:
g(x) = 3f(-x/2)
Step-by-step explanation:
g(x) is 3 times the height of f(x), and 2 times its width. It is also reflected over the y-axis.
The relevant transformations are ...
g(x) = k·f(x) . . . . scales f(x) vertically by a factor of k
g(x) = f(-x) . . . . . reflects f(x) over the y-axis
g(x) = f(x/k) . . . . scales f(x) horizontally by a factor of k
__
The three transformations we described at the beginning mean that g(x) is ...
g(x) = 3f(-x/2)
Pls help with this one
Answer:
1757.5
Step-by-step explanation:
10% of $1,850 is 185
5% of 185 is 92.5
1,850 minus 92.5 = 1757.5
please mark brainliest if this helped!
Answer:
b) $1,757.50
Step-by-step explanation:
15. 1,850 * 5
1,850 * 0.05 = 92.5 (how much was discounted)
1,850 - 92.5 = $1,757.50
Hope this helps!
The point H(2,6) is reflected over the x-axis. What are the coordinates of the resulting point, H’?
Answer:
H(2,-6)
Step-by-step explanation:
reflection over the x-axis results in the y-coordinate getting the opposite sign
= a fx The function f is defined by f (x) = 50-3^x. The function g is defined by g(x) = a · Here are graphs of f and g. y مه f Х 1. How does a compare to 50? Explain how you know. 2. How does b compare to 3? Explain how you know. Edit View Insert Format Tools Table 12pt Paragraph В I U A o Tv :
Answer:
Step-by-step explanation:
a, compares to 50 beacuse a means the staying point ; slope, so that’s why it starts at 50.
b, compares to 3 beacuse that is the y-intercept
Please Help me solve this problem
The length of a bedroom in a blueprint is 5in. and the width is 7in. The actual length of the bedroom is 12ft. Identify the actual width of the bedroom in feet.
To solve this problem, we can use cross multiplication:
First, we can to convert inches into feet so...
5 inches = 0.416667 ft
7 inches = 0.583333 ft
(0.416667 ft/ 0.583333 ft) = (12 ft/ x ft)
x = 16.8 ft
So the actual width is 16.8 ft.
Hope this helps!
The seventh-grade class is building target areas for a PE activity. The bases for the game will be circular in shape. The diameter of each circle is 5 feet. Approximately how many square feet of the turf need to be painted for a base circle? Use 3.14 for π and round your answer to the nearest tenth.
15.7 square feet
19.6 square feet
42.8 square feet
78.6 square feet
Answer:
(b) 19.6 square feet
Step-by-step explanation:
The area of a circle is given by the formula ...
A = πr²
If the diameter is 5 feet, the radius is 2.5 feet, so the area is ...
A = (3.14)(2.5 ft)² ≈ 19.625 ft² ≈ 19.6 ft²
The area of a base circle is about 19.6 square feet.
Answer:
19.6 square feet
Step-by-step explanation:
Jenny wants to buy a new dress for her for school dance she borrows $25.63 from her sister to help pay for the dress then Jenny earns $16.33 helping her dad organized his home office if she gives all the earnings to her sister Jenny will still owe her sister $
Answer:
= $25.63 - $16.43
=$9.2
Jenny will still owe her sister $9.2
Answer:
Jenny owe her sister 9.3 dollars
Step-by-step explanation:
25.63 - 16.33
= 9.3
Question below in image
Answer:
m∠92°Step-by-step explanation:
m∠e = m∠a ( Corresponding Angles)
The solution to an inequality is graphed on the number line. A number line going from negative 5 to positive 5. A solid circle appears between positive 4 and positive 5. The number line is shaded from the circle to negative 5. What is another way to represent this solution set? {x | x < 4. 5} {x | x ≤ 4. 5} {x | x > 4. 5} {x | x ≥ 4. 5}.
The solution set for the number line of inequality can be represented as,
{x | x ≤ 4. 5}
What is the number line?The number line is the way of representation of number and digits in a arranged form to understand the data batter.
The meaning of circle in number line,
Open circle-When the value of the variable is equal to the given number, then the graph of the inequality has an open circle.Closed circle or solid circle-When the value of variable is not equal to the given number, then the graph of the inequality has a closed circle.The number line going from negative 5 to positive 5 and a solid circle appears between positive 4 and positive 5. The middle point of 4 and 5 is 4.5.
The solid or closed circle means that the value has less than or equal to 4.5. Thus, the solution set for the number line of inequality can be represented as,
{x | x ≤ 4. 5}
Learn more about the number line here;
https://brainly.com/question/24644930
of 20 chickens, 9 are brown. What fraction is brown? (please show the working)
Answer:
9/20 also 45%
Step-by-step explanation:
well if 20 of them 9 are brown so 9 out of 20 of them are brown/45% of them because out of 20 each thing right or each person is 5%
Answer:
45/100 out of the 20 chickens are brown
Step-by-step explanation:
9/20 = 45/100
9/20 x 5 = 45/100
Someone please help me asap! I will mark as brainliest, thank you!!
Answer:
Perimeter of ABCD = 2(24 + 26 + 28 + 25) = 206 mm.
Step-by-step explanation:
Perimeter of ABCD = 2(24 + 26 + 28 + 25) = 206 mm.
Included in the definition of an elliptic curve is a single element denoted O and called the point at infinity or the ____ .
Answer:
Zero Point
Step-by-step explanation:
How do I solve this?
Answer:
By using your brain? XD
Here's the answer:
2:5 of 63
2+5=7
2/7 X 63=18
5/7 X 63= 45
Tina recieves 18/63 (2/7)
Please mark as Brainliest
Which expression is not equivalent
to 4k + 12?
A. 3k + 4 + k + 8
B. 30k + 3) + 3
C. 40k + 3)
D. 2(2k + 5) + 2
Answer:
A , D
Step-by-step explanation:
A. = 4k+12
B. =30k+6
C. =40k+3
D. =4k+10+2= 4k+12