Step-by-step explanation:
1.
[tex]0 = {x}^{2} - 7x - 18 \\ 0 = {x}^{2} + 2x - 9x - 18 \\ 0 = x(x + 2) - 9(x + 2) \\ 0 = (x + 2)(x - 9) \\ \\ \\ (x + 2) = 0 \: \: \: \: or \: \: \: \: (x - 9) = 0 \\ \\if \: \:x + 2 = 0 \\x = 0 - 2 \\ x = (- 2) \\ \\ if \: \:x - 9 = 0 \\ x = 0 + 9 \\ x = 9 \\ [/tex]
You and 3 friends are going to the country fair. You have a coupon that will save your group $20. If the total bill to get into the fair was $100, how much does one regular price ticket to the fair cost?
Answer:
30$
Step-by-step explanation:
lets assume you didn't have a coupon then the total bill would have been 120$
so for 4 friends including u the bill would have been 120$
: 4 friends = 120 $
for : 1 friend = x$
cross multiply
4x = 120 × 1
4x =120
divide both sides by the coefficient of x
x =120 \ 4
x = 30$
therefore: 1 friend = 30$
Explain in your own words the meaning of equivalent
ratios.
Answer:Equivalent ratios are ratios that make the same comparison of numbers. Two ratios are equivalent if one can be expressed as a multiple of the other.
Answer:
ratios that make the same comparison of numbers
Step-by-step explanation:
i hope thats good for u
ANALYZE The surface area of a three-dimensional object is the sum of the area of the faces. If represents the length of the side of a cube, write a formula for the surface area S of the cube.
Step-by-step explanation:
If X represents the length of the side of a cube, the formula for the surface area of the cube, S =?
solution :
the area of each face of the cube = side × side
= X × X = X²
the cube has 6 similar faces, so the surface area of the cube could be:
S = 6 × X² = 6X²
Answer:
Surface Area = 6 × S²
Step-by-step explanation:
the surface area fo the cube :
SA = 6 × lenght × lenghtif lenght = S, the surface area fo the cube :
SA = 6 × lenght × lenght
SA = 6 × S × S
SA = 6 × S²
The diagonal of a rectangle is 25in. The width is 15 in. What is the area of the rectangle
Answer:
10
Step-by-step explanation:
What is the rounded number when 4 872 is rounded to the nearest hundred?
Please help me with this math problem! I will give brainliest!! :)
Line BC is equal to line AD
∴
x + 17 = 3x + 7
x - 3x = 7 - 17
-2x = - 10
-2x / -2 = - 10 / -2
x = 5
AD
3x + 7
3(5) + 7
15 + 7
22
CD
2x - 6
2(5) - 6
10 - 6
4
BC
x + 17
5 + 17
22
AB
Line AB is equal to line CD therefore its length is 4
Answer:
x = 5
AB = 4
BC = 22
CD = 4
AD = 22
seventeen is less than twice the sum of a number and three
Answer:
no it would be more
Step-by-step explanation:
3+3=6 so not 17 at all
Answer:
x > 17/2 - 3
Step-by-step explanation:
17 < 2(x+3)
17/2 < x+3
17/2 - 3 < x
5. Which digital construction tool does the same job as a compass?
A. Point
B. Line
C. Polygon
D. Circle with center through point
[tex]4,\pi ,8[/tex] how do i order from least to greatest
Answer:
[tex] \pi \: 4 \: 8[/tex]
Answer:
[tex]\pi, 4, 8[/tex]
Step-by-step explanation:
Note that [tex]\pi\approx3.14[/tex]. As [tex]3<3.14<4[/tex], [tex]\pi[/tex] comes before [tex]4[/tex].
Clearly [tex]4<8[/tex], so [tex]4[/tex] comes before [tex]8[/tex].
The only possible ordering is [tex]\boxed{\pi, 4, 8}[/tex]
please answer!! will give a thanks and brainliest! :)))
8.
Since they have twice as many games won as lost there are 3 parts.
The losing part and the two winning parts.
The winning part is [tex]\frac{2}{3}[/tex] the games while the losing part is [tex]\frac{1}{3}[/tex] the games.
Just multiply [tex]\frac{2}{3}[/tex] by the games played to find the games won.
[tex]\frac{2}{3} (96)=\frac{192}{3} =64[/tex]
The ravens won 64 games.
10.
Make a system of equations.
Let s be the number of skips interviews and w be the number of woodys interviews.
s=w-8
s+w=20
Then just use algebra to rearrange and find each persons interviews.
For this one we can rearrange the second equation to get s=20-w.
Since we have two solutions for s we can set them equal.
w-8=20-w
2w-8=20
2w=28
w=14
Now that we have the number of woodys interviews substitute it into the first equation to get skips interviews.
s=w-8
s=14-8
s=6
So skip had 6 interviews and woody had 14 interviews.
12.
Make a system of equations
y-x=7
x+y=33
Then just use algebra to rearrange and find each amount of items.
Start by solving with substitution. (Elimination could work too im just going to use substitution.)
y-x=7
y=7+x
Substitute into the second equation
x+(7+x)=33
2x+7=33
2x=26
x=13
Now plug this x value back into the first equation
y-13=7
y=20
The number of items on one list is 13 and the number of items on the second list is 20.
write an equation of the line that has each pair of intercepts
x-intercept: 6 y-intercept: 3
Answer: y = 6x+3
Step-by-step explanation:
swine flu is attacking the north pole. the function below determines how many elves have swine flu where t=time in days and S= the number of people in thousands.
S(t)=9t - 4. find S(4)
Answer:
S(4) = 32
Step-by-step explanation:
Work on photo !
Subtraction of integers
-70 --25 =
Answer:
-45
Step-by-step explanation:
-70 --25
-×-=+
-70 +25
-45
hi what's this answer please? -3 1/2 - 1 5/6 =
Answer:
12
Step-by-step explanation:
-31*6 - 15*2
2*6
= -186 - 30
12
= -216
12
Answer = -216
12
Hope it helped
Answer:
- 5 [tex]\frac{1}{3}[/tex]
Step-by-step explanation:
- 3 [tex]\frac{1}{2}[/tex] - 1 [tex]\frac{5}{6}[/tex] ( change to improper fractions )
= - [tex]\frac{7}{2}[/tex] - [tex]\frac{11}{6}[/tex] ( multiply numerator/denominator of first fraction by 3 )
= - [tex]\frac{7(3)}{2(3)}[/tex] - [tex]\frac{11}{6}[/tex]
= - [tex]\frac{21}{6}[/tex] - [tex]\frac{11}{6}[/tex]
= [tex]\frac{-21-11}{6}[/tex]
= [tex]\frac{-32}{6}[/tex]
= - [tex]\frac{32}{6}[/tex]
= - 5 [tex]\frac{2}{6}[/tex]
= - 5 [tex]\frac{1}{3}[/tex]
is 16/6 a rational numer
what is 15% of $8.00
Answer:
15% of $8.00 is: $1.20
Step-by-step explanation:
Hope this helps :)
Pls mark as brainliest <3
0.884743701 British pounds and 1.2 US$
i just need help with number 2, i don’t understand
Step-by-step explanation:
Assuming c = x, you would substitute 2{(5)^(5)} - 6,
5^5 = 25,
2(25) = 50,
50 - 6 = 44
Answer would be 44, but only if c = x
In the morning, the temperature was–10°C. By the afternoon, it had risen to–2°C. What was the change in temperature from the morning to the afternoon?To solve the problem, Luke subtracted–2–(–10) and came up with an answer of 8°C. Is Luke correct? Why or why not?
Solve for n.
3 ( n + 5 ) ≥ 3 n + 8
Answer:
[tex]3(n + 5) \geqslant 3n + 8 \\ 3n + 3 \times5 \geqslant 3n + 8 \\ 3n + 15 \geqslant 3n + 8 \\ 3n - 3n \geqslant 8 - 15 \\ 0n \geqslant - 7 \\ no \: solution \\ thank \: you[/tex]
Answer:
[tex]7 \geqslant 0 \: \: \: \: or \: \: \: \: 0 \leqslant 7 \\ [/tex]
Step-by-step explanation:
[tex]3(n + 5) \geqslant 3n + 8 \\ 3n + 15 \geqslant 3n + 8 \\15 - 8 \geqslant 3n - 3n \\ 7 \geqslant0 \\ [/tex]
Which of the following equations represents a line that passes through the points (-10, -9)(−10,−9) and (10,-1)(10,−1)?
I. y+1=-\frac{2}{5}(x-10)y+1=−
5
2
(x−10)
II. 2x-5y=252x−5y=25
Answer:
y = 2/5x - 5
Step-by-step explanation:
(-10,-9) and (10,-1)
Slope: (-1 - - 9) / ( 10 - - 10)
Slope = 8/20 = 2/5
b = -9 - (2/5(10)
b = -5
The equation of the line that passes through the point (−10,−9) and (10,-1) is; y = 2/5x - 5
What is the Point-slope form?The equation of the straight line has its slope and given point.
If we have a non-vertical line that passes through any point(x1, y1) and has a gradient m. then general point (x, y) must satisfy the equation
y-y₁ = m(x-x₁)
Where x₁ - x coordinate, y₁ - y coordinate, m - slope
Slope: (-1 - - 9) / ( 10 - - 10)
m = Slope = 8/20 = 2/5
Now intercept;
b = -9 - (2/5(10)
b = -5
Now Write the equation as
y = 2/5x - 5
Hence, the equation of the line that passes through the point (−10,−9) and (10,-1) is; y = 2/5x - 5
Learn more about equations here;
brainly.com/question/25180086
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NO LINKS!!!!!!!!!!!!
Answer:
this is the answer thanks mark me as brainlist
Could someone please help me answer this, please no spam, will give brainliest, thank you! (homework help)
Answer:
b<-1
Step-by-step explanation:
-3b-2>1
add 2 on both sides
-3b>3
divide both sides by -3
b<-1
the face of a clock has a circumference of 62.8 in. What is the area of the face of the clock.
Answer:
3 943.84π
Step-by-step explanation:
tienes que usar la fórmula de: pi por radio al cuadrado
Answer:
[tex]314in^{2}[/tex]
Step-by-step explanation:
Circumference is [tex]2\pi r[/tex]
Find your radius
[tex]2\pi r=62.8\\\pi r=31.4\\[/tex]
Let [tex]\pi =3.14[/tex] for simplicity
r=[tex]\frac{31.4}{3.14}[/tex]=10
Now use the equation for the area of a circle to find the area of the clock face.
Area of a circle is [tex]\pi r^{2}[/tex]
Area of clock face is [tex]\pi (10^{2} )[/tex]
=[tex]100\pi[/tex]
=[tex]314in^{2}[/tex]
How do division properties help you evaluate expressions?
Drag a word or number to the box to correctly complete the statement.
When the of a fraction is equal to Response area and the numerator is nonzero, the value of the fraction is equal to the numerator of the fraction.
Answer: denominator and 1
Step-by-step explanation: took k12 test
PLEASE HELP ASAP IT'S REALLY IMPORTANT!!!
Answer:
why
Step-by-step explanation:
I thought something happened to you why did u never come back,why just ghost me of all people not only once but twice
Find the next 3 terms of the sequence below:
plz help me i don’t understand
Answer:
A it wold be pushing 40 newton to the left
B opposite
C subtract
D i don know that one
E unbalanced
Step-by-step explanation:
Please help me this is due please help
Answer:
each person pays $21.04
Step-by-step explanation:
105.20/5=21.04
Answer:
$21.04
Step-by-step explanation:
U just divide the amount of money by 5. (im pretty sure thats all u do)
Please help. I don't know the answer
Answer:
The answer is 3x+4y<-12
Step-by-step explanation:
PLEASE ANSWER I WILL GIVE A THANKS AND BRAINLIEST!!!<3
Answer: I HAVENT FINISHED THIS
Step-by-step explanation:
ILL BE BACK
Answer:
Step-by-step explanation:
Not sure if you're being lazy or something these questions are ridiculously easy...
27) f-3
28) j-9
29) m-10
30) d/2
31) x-17
32) 7/18
33) a. 3-s b. 3+d
34) a. r+5 b. e-5
35) a. g-12 b. b+12
36) a. 12+s b. L-12