Answer:
number is 4
Step-by-step explanation:
let 'n' = the number
2(n + 18) = 9n + 8
2n + 36 = 9n + 8
36 = 7n + 8
28 = 7n
n = 4
f(x)=2x^2+9
Find f(-5)
Answer:
59
Step-by-step explanation:
Given
f(x) = 2x² + 9
f ( -5) = 2 * ( -5)² + 9
= 25 * 2 + 9
= 50 + 9
= 59
════════ ∘◦❁◦∘ ════════
Answer = 59════════════════════
Knownf(x) = 2x² + 9
════════════════════
Questionf(-5) = ?
════════════════════
Way to do#as you the x inside the (x) changed into (-5) it means that you need to change the x into -5.
f(-5) = 2(-5)² + 9
= 2 × 25 + 9
= 50 + 9 = 59
#So f(-5) = 59
════════════════════
. Lucy orders books from an online bookstore. She pays $12 per book and $8.95 for shipping and handling. How much does she pay in all for 13 books?
Answer:
If the shipping is for all books then the total cost is 164.95
If the school has 90 students, there are how many sixth graders?
Answer:
29
Step-by-step explanation:
Answer: Depends on the number of grades
Step-by-step explanation:
School has up to 6th grade: 15
School has up to 7th grade: 12
School has up to 8th grade: 11
School has up to 9th grade: 10
School has up to 10th grade: 9
Need more grades? Comment please
It costs Susan's t-shirt company $8 to make a shirt. Susan decides to sell each shirt for $30 in stores. What is the percent markup?
Answer:
15%? i think im wrong sorry.
Step-by-step explanation:
it's math please help me math lovers
[tex] \\ \\ \\ find \: product \\ \frac{18}{30} \times \frac{5}{4} \\ multiply \\ 4 \frac{1}{8} \times \frac{1}{9} \\find \: product \\ \frac{15}{18} \times \frac{6}{9} \times \frac{27}{21} \\ \\ multiply \: help \: of \: diagram \\ \frac{1}{4} of\frac{1}{2} \\ \\ mulytiply \: and \: convert \: into \: mix \: fraction \: \\ 3 \times \frac{7}{70} \\ \\ solve \\ (6 \times \frac{1}{4}) \times \frac{1}{2} \times \frac{1}{2} [/tex]
Find the product:-
[tex] \tt \dfrac{18}{30} \times \dfrac{5}{4} [/tex]
[tex] = \tt \dfrac{18 \times 5}{30 \times 4} [/tex]
[tex] = \tt \cancel\dfrac{18 \times 5}{30 \times 4} = \boxed{\tt\dfrac{ \: \: 3 \: \: }{4}} \: \: \: \: \: \: \: \: \: [/tex]
Multiply:-
[tex] \tt4 \: \dfrac{1}{8} \times \dfrac{1}{9} [/tex]
[tex] = \tt \dfrac{25}{8} \times \dfrac{1}{9} [/tex]
[tex] = \tt\dfrac{25}{8} \times \dfrac{1}{9} [/tex]
[tex] = \tt \cancel\dfrac{25 \times 1}{8 \times 9} = \cancel{ \tt\dfrac{ \: \: 25 \: \: }{72}} [/tex]
[tex] = \boxed{\tt\dfrac{ \: \: 1 \: \: }{3 }} [/tex]
Find the product:-
[tex] \tt \dfrac{15}{18} \times \dfrac{6}{9} \times \dfrac{27}{21} [/tex]
[tex] = \tt \cancel\dfrac{15 \times 6 \times 27}{18 \times 9 \times 25} [/tex]
[tex] = \boxed{\tt \dfrac{ \: \: 5 \: \: }{7}} [/tex]
Multiply:-
[tex] \tt \: 3 \: \dfrac{7}{70} [/tex]
[tex] = \tt \cancel\dfrac{3 \times 7}{1 \times 70} = \boxed{ \tt\dfrac{ \: \: 3 \: \: }{10}} [/tex]
Solve:-
[tex] \tt(6 \times \dfrac{1}{4}) \times \dfrac{1}{2} \times \dfrac{1}{2} [/tex]
[tex] = \tt \cancel{( \dfrac{3 \times 1}{1 \times 2} )} \times \dfrac{1}{2} \times \dfrac{1}{2} [/tex]
[tex] = \tt(\dfrac{3}{ \: \: 2 \: \: }) \times \dfrac{1}{2} \times \dfrac{1}{2} [/tex]
[tex] = \tt\dfrac{3}{ 2 } \times \dfrac{1}{2} \times \dfrac{1}{2} \: \: \: \: \: \: \: \: = \boxed{ \tt \dfrac{ \: \: 3 \: \: }{8}} [/tex]
Only the smartest person in their math class can help me with this difficult problem!!!
Step-by-step explanation:
[tex] \tt{(5 {x}^{3} - 3x + 6) - (2 {x}^{2} - 4x + 8)}[/tex]
While subtracting , the sign of each term of second expression changes & remove the parentheses.
⟶ [tex] \tt{5 {x}^{3} - 3x + 6 - 2 {x}^{2} + 4x - 8}[/tex]
Combine like terms. Like terms are those which have the same base. Only coefficients of like terms can be added or subtracted.
⟶ [tex] \tt{5 {x}^{3} - 3x + 4x + 6 - 8 - 2 {x}}^{2} [/tex]
⟶ [tex] \tt{5 {x}^{3} + x - 2 - 2 {x}^{2} }[/tex]
In standard from , the expression should be written in such a way that the power of variables goes from highest to lowest.
[tex] \red{ \boxed{ \boxed{ \tt{Our \: final \: answer : \boxed{ \tt{5 {x}^{3} - 2 {x}^{2} + x - 2}}}}}}[/tex]
Hope I helped ! ♡
Have a wonderful day / night ! ツ
▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
Answer:
I'm the smartest person in my math class.
Step-by-step explanation:
While subtracting , the sign of each term of second expression changes & remove the parentheses.
⟶ 5x³-3x +6-2x²+4x-8
Combine like terms. Like terms are those which have the same base. Only coefficients of like terms can be added or subtracted.
⟶ 5x³-3x+4x+6-8-2x²
⟶ 5x³+x-2-2x²
In standard from , the expression should be written in such a way that the power of variables goes from highest to lowest.
In the diagram of circle M shown, the measure of major arc PRQ=268 . Which of the following
is the measure of angle PRQ ?
Step-by-step explanation:
The Answer is 46
The measure of Arc PRQ is 268. Another part of the arc is PQ. PRQ+PQ forms a full circle In which a circle has 360 degrees. Using that
[tex]268 + x = 360[/tex]
[tex]x = 92[/tex]
Since we are asked to the measure of PRQ and it is inscribed in arc PQ. It is half of PQ so the answer is
[tex]92 \div 2[/tex]
which is 46.
Which is the sum of the first 6 terms of the geometric series?
7+21 +63
Answer:
2,548
Step-by-step explanation:
First, we have to find out the rule. The rule is multiply the previous number by 3 to get the next number.
7x3=21
21x3=63
So, we would continue this pattern until we have the first 6 numbers which are 189, 567, and 1701.
The questions is asking for the SUM of the 6 numbers so you would add the those numbers and do this equation:
7+21+63+189+567+1701= 2548
Hope this helps! :)
Find the common factors
a. 2a² and 10ab
Answer:
Step-by-step explanation:
common factor of 2a² and 10ab= 2a
solve this equation using synthetic division x³+2x²+4x+8=0
Answer:
Your answer is.......
x^3 + 2x^2 + 4x + 8=0 Note.. if x=-2 then whole equation is 0
So, (x+2) is one factor.
x^3 + 2x^2 + 4x + 8
=x^2(x+2)+4(x+2)
(x+2)(x^2+4)
Mark my answer as brainlist. pls pls pls
it takes three identical water pumps 7 hours to fill a pool, how long would it take two of the same pumps to fill the pool, assuming they all pump at the same rate. please help
Answer:
10.5 hrStep-by-step explanation:
7 hr/3 pumps
So first we want to find the unit rate which would be...
5.25 hr/1 pump
Now that we found the unit rate we are going to multiply it by 2 because there are 2 pumps...
5.25*2=10.5
So our answer is 10.5 hr/ 2 pumps
YOUR WELCOME!
BRAINLIEST?????
Some help ppplllsssss
Answer:
the answer is b
Step-by-step explanation:
Side Angle Side
100 PTS + BRAINLIEST PLEASE HELP
Answer:
Answer is 1/216.
Step-by-step explanation:
Answer:
b is the right answer
Step-by-step explanation:
Simplify the expression
2n - n - 4 + 7n
Answer:8n-4
Step-by-step explanation:
Answer:
n=1/2
Step-by-step explanation:
Step1: 2n-n-4+7n
Step2: 8n-4
Step3: 8n=4
Step4: n=4/8
Step5: n=1/2
please help I don't get it
Answer:
tienes que hacer cuadritos
please help fast im timed
275 students brought their lunch. Which was 25% of the students. How many students went on the trip?
Answer:
1,100
Step-by-step explanation:
Wow that's a lot of students. Anyway, 25% is one fourth of the 100%, so we multiply 275 by 4 and we get 275.
how many solutions does the equation have y=1/2x-7 y=6x+2
Answer:
One solution, x=-18/11.
Step-by-step explanation:
y=1/2x-7
y=6x+2
---------------
1/2x-7=6x+2
1/2x-7-6x=2
1/2x-6x=2+7
1/2x-12/2x=9
-11/2x=9
x=9/(-11/2)
x=(9/1)(-2/11)
x=-18/11
PLEASE HELP ME ASAP!!!!!! USE THIS LINK I WILL GIVE BRAINLEAST
https://brainly.com/question/21436005
Answer:
okie
Step-by-step explanation:
Answer:
Ok
Step-by-step expl
My tiny brain cant understand Mathematics so please help meeeeeeeeee (┬┬﹏┬┬)
Answer:
Ok I will help you
Analyze the dot plots. What is the approximate difference between the means of the two data sets to the nearest whole number? mm
Answer:
it is 3mm i had the test
Step-by-step explanation:
edge 2021
Answer:
3mm! -w-
Step-by-step explanation:
Simplify the expression (3a^4) (-6a^3) 
Answer:
18a^7
Step-by-step explanation:
Olivia does chores every Saturday morning. She spends of her time cleaning her room. Of the remaining of her time, she spends of it cleaning the kitchen. How much of Olivia's total time does she spend cleaning the kitchen?
Answer:
4/7 of her total time cleaning the kitchen
Step-by-step explanation:
Olivia does chores every Saturday morning. She spends 1/3 of her time cleaning her room. Of the remaining 2/3 of her time, she spends 6/7 of it cleaning the kitchen. How much of Olivia's total time does she spend cleaning the kitchen?]
Let
x = her total time
Room cleaning = 1/3x
Time remaining = 2/3x
Of the remaining 2/3 of her time, she spends 6/7 of it cleaning the kitchen.
Kitchen cleaning = 6/7 of 2/3x
= 6/7 * 2/3x
= (6*2)x/(7*3)
= 12/21x
= 4/7x
Olivia spent 4/7 of her total time cleaning the kitchen
PLEASE HELP I WILL PUT BRAINLIEST!!!!!!
Answer:
Area of shaded region is 18π square unit
Step-by-step explanation:
Please mark brainliest
Answer:
18π cm²
Step-by-step explanation:
The shaded region is calculated as
A = area of circle × fraction of circle
= πr² × [tex]\frac{80}{360}[/tex] ( r is the radius of the circle )
= π × 9² × [tex]\frac{2}{9}[/tex]
= 81π × [tex]\frac{2}{9}[/tex]
= 9π × 2
= 18π cm²
Little Scotty's favorite toy is a grizzly beat that is 6 inches tall. A full grown grizzly bear in the wild is 84 inches tall. What is the scale factor of Scotty's toy compared to a grizzly in real life?
(Don't forget to simplify)
Scale Factor = ????
9514 1404 393
Answer:
1 : 14
Step-by-step explanation:
The scale factor model/real = (6 in)/(84 in) simplifies to 1/14.
Hi! Please without looking it up I am doing my writing and speaking test for Spanish and I'm trying to figure out what is "Then" in Spanish...Mind you they use translator detectors so please don't look it up and just help me with it. This is the sentence "There are more tables in the kitchen then in my room." I literally just need to know what "Then" is in Spanish! Thank you!
Answer:
The sentance you but then would be than which would be Hay más mesas en la cocina que en mi habitación but the word then would be entonces and example sentance is entonces iré allí which is then i will go over there
and than is que, an example sentace en lugar de que yo vaya allí which is rather than me going over there
Step-by-step explanation:
Answer:
Hi Alycia! The answer to your question is Hay más mesas en la cocina que en mi habitación
Step-by-step explanation:
☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆
☁Brainliest is greatly appreciated!☁
Hope this helps!!
- Brooklynn Deka
xD
The diameter of a circle is 14km. What is the circles circumference?
Answer:
Step-by-step explanation:
c=d[tex]\pi[/tex]
c=14x3.14
c=43.96
Mark reduce the size of a photo to a height of 4 inches. What is the new width if it was originally 16 inches tall and 8 inches wide?
Answer:
Step-by-step explanation:
new height is ¼ of original height
new width = ¼×8 = 2 inches
Answer:
2 inches
Step-by-step explanation:
To find the new width, find the scale factor that was used to reduce the photo.
Since 16 divided by 4 is 4, 4 is the scale factor.
To find the new width, divide 8 by 4:
8/4
= 2
So, the new width is 2 inches
A length of rope is 6 meters long. How many 3/4 meter pieces can be cut from the length of the rope
Answer:
Step-by-step explanation:
[tex]\frac{6}{\frac{3}{4}}\\ \\ 6\left(\frac{4}{3}\right)\\ \\ 8\ pieces[/tex]
what is the interest on RS. 1000 at 10 p.c.p.a for 1 year.
Answer:
Interest wil be 10% of 100 which is 10
So, interest will be Rs.10
And total amount to be payed will be 100+10 which is Rs.110
Answer:
Interest= Rs. 10
Step-by-step explanation:
Interest of Rs.100 on 10 p.c.p.a is 10% of 100
i.e., 100*10/100 = 10
Thus we have 10 as the interest