suppose that the functions s and t are defined for all real numbers x as follows
s(x)=x+6
t(x)=2x^2
write the expressions for (s+t)(x) and (s*t)(x) and evaluate (s-t)(2)
Answer:
(s+t)(x) = s(x) + t(x)
(s*t)(x) = 2x³ + 4x²
Step-by-step explanation:
(s+t)(x) = s(x) + t(x)
= x + 2 + 2x²
= 2x² + x + 2
(s*t)(x) = s(x) * t(x)
= (x + 2) * 2x²
= 2x³ + 4x²
please give me brainliest if my answer is helpful
In a class of 20 students, the number of boys was the number of girls. How many girls were in the class?
Answer:
10
Step-by-step explanation:
Because if the number of girls is the same as the boys you just devide 20 by 2 and get 10
solve 3x+ k= c for x.
The value of variable x in the equation is x = c - k / 3
How to make a variable subject of the formula?3x+ k = c
let's find x or make it the subject of the formula,
3x + k = c
subtract k from both sides of the equation
3x + k - k = c - k
3x = c - k
divide both sides by 3
3x / 3 = c - k / 3
Therefore,
x = c - k / 3
learn more on variables here: https://brainly.com/question/10730100
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A rectangle is 15 cm wide and 18 cm long. If both dimensions are
decreased by the same amount, the area of the new rectangle formed is
116 cm less than the area of the original. Find the dimensions of the
new rectangle
Answer:
not 100percent sure but found this online 11 cm x 14 cm
Step-by-step explanation:
10) What is the area of the figure below? Round your answer to the nearest tenth (1 place
value)
The area of the figure is
un?
Find the number that makes the ratio equivalent to 1:8.
7:__
Answer:
56
Step-by-step explanation:
1:8= 7:?
1*?=7
/1 /1
1*7=7
8*7=56
1:8 = 7:56
Answer:
7:56
Step-by-step explanation:
1:8
we need to turn the one into seven. Turn the ratio 1:8 into the fraction 1/8.
multiply by 7/7 to turn the one into seven and 8 into 56
7/56 can now be turned into ratio 7:56. You could omit the turning of the ratio into the fraction at the beginning, but I find it makes it simpler.
Priyanka drives at 45km/h and reaches Delhi in 5 hours.What time will she take to complete the same journey if she increases her speed by 5km/h ?
Answer: Increasing her speed by 5km/h, she will take 4.5 hours to complete the journey.
Step-by-step explanation:
Step 1
Speed= Distance / TIme
Given Speed = 45km/h
and Time = 5 hours
Distance covered = Speed x Time
= 45 km/h x 5 hours
=225 kilometres.
Step 2
Increasing her speed by 5km/h makes the new Speed = 45 +5 = 50 km/h
At the same Distance of 225 km
Therefore she will complete the journey in
Time = Distance/ Speed
=225km/ 50km/h
=4.5 hours
hi can anyone solve and give a explaination plz? its for a friend
6.75
-2.25
----------
4.50
-2.25
----------
2.25
-2.25
----------
0.00
you could bowl 3 times (it starts off at 6.75 because I took away the cost of the shoes)
Answer the following question:
Answer:
p is goodvjlxhkjdgmdgjmdmthdmyj
A 1.5 m tall woman stands next to the Eiffel Tower. At this time of day, her shadow is 0.5 m long. At the same time, the tower's shadow is 90 m
long. How tall is the Eiffel Tower? Show your work.
When we are given a linear function, how is one way we can graph it
Help!!!!!!!!!!!!!!!!!!
Answer:
y > 0
Step-by-step explanation:
3y - 5x = 15 slope intercept form
Answer:
Y=3/5x-3
Step-by-step explanation:
Answer:
y=5/3x+5
Step-by-step explanation:
1)3y-5x=15
2)3y=15+5x
3)y=5+5/3x
4)y=5/3x+5
1) Write the equation out
2) Add 5x to both sides of the equation
3) Divide both sides of the equation by 3
4) Reorder the terms
pleassee if you help i will mark you BRAINLIST
A store pays $85 for a table. The markup is 90%. What is the selling price?
What is the total bill for a $54 dinner with a 5% sales tax and a 20% tip?
Answer:
1. $161.50
2. $68.04
Step-by-step explanation:
Need help with this assignment!
Answer:
x=3
Mark me if I helped you❤️
Kayla bought 8 hot dogs and hamburgers for her and her friends. Hot dogs cost $1.50 and hamburgers cost $1.75. If she spent a total of $13.25, how many hot dogs did she buy?
Answer:
5 hamburgers and 3 hot dogs
Step-by-step explanation:
D = number of hot dogs
H = number of hamburgers
D + H = 8 then D = 8 - H
1.50D + 1.75H = 13.25
substitute for D
1.50(8-H) + 1.75H = 13.25
12-1.50H + 1.75H = 13.25
subtract 12 from each side
-1.50H + 1.75H = 1.25
0.25H = 1.25
divide both sides by 0.25
H = 5
D = 8-5
D = 3
What is the median and mean of 18,15, 11, 3, 8, 4, 13, 12, 3, 18
I need some help with these problems
Answer:
calculate by yourself
Step-by-step explanation:
use sin theorem
1.
[tex] \frac{s}{ \sin(60) } = \frac{12}{ \sin(30) } [/tex]
2.
[tex] \frac{s}{ \sin(90) } = \frac{4}{ \sin(30) } [/tex]
3.
[tex] \frac{s}{ \sin(60) } = \frac{10}{ \sin(90) } [/tex]
Find the next three terms in each geometric sequence.
3. 400,200,100,50, .......
4. 4,-12,36,-108, ........
Answer:
3) 25, 12.5, 6.25
4) 324, -972, 2916
Step-by-step explanation:
Please help! Will mark brainliest!
Answer:
12) 20
13) 12.5
14)124
Can somebody tell me what's 43 divided by 1032 in long division? (Step by step) Or send a picture please
Answer:
24
Step-by-step explanat
Divide both the numerator and denominator by the GCD
1032 ÷ 43
43 ÷ 43
Reduced fraction:
24
1
Therefore, 1032/43 simplified to lowest terms is 24/1.
find the product (3x - 5) (3x + 5)
Answer:
9x ^2 − 25
Explanation:
( a + b ) ( a − b ) = a ^2 − ^b 2
substitute a with 3 x and b with 5:
( 3 x + 5 ) ( 3 x − 5 ) = ( 3 x ) 2 −5^ 2 = 9 x ^2 − 25
( 3 x + 5 )( 3 x − 5 ) = 9 x ^2 − 25
Answer:
9x² - 25
Step-by-step explanation:
(a - b)(a + b)= a² - b²
a = 3x ; b = 5
(3x - 5 )(3x + 5)= (3x)² - 5²
= 3²x² - 25
= 9x² - 25
a rectangle has an area of 25 in squared. itis dilated by a scale factor of 4. what is the area of the new image ?
Simplify numbers with units 1.
Answer:
1. 1 min : 2 min
2. 1 min : 4 min
3. 1 : 5
4. 1 : 2
5. 1 hr : 4 hrs
6. 7 p : 10 p
7. 5 : 2 : 3
8. 1 : 3
9. 3 : 5
Step-by-step explanation:
break it down to the lowest, which means to keep dividing it till it can't anymore.
hope that helps
PLEASE HELP ME 9(6j + 7 + 2j)
Answer:
72j + 63
Step-by-step explanation:
PLEASE HELP! WILL ADD BRAINLIEST!!! SHOW YOUR WORK!!!!
Polly’s room is a rectangle. It has a width represented by the expression 4x – 2 and a length represented by the expression
2x – 5. If the room has a perimeter of 73 feet, find the area of Polly’s room.
Answer: 80
Step-by-step explanation: A=LxW.
4x-2=-8
2x-5=-10
-10x-8=80
I need help pleases thank you.
Answer:
C. x < -2.
good luck, i hope this helps :)
please help!!!!!!!!!
Answer:
64
Step-by-step explanation:
to be honest i just looked it up it thats what i do with my work and i always get it right so...
What does the symbol 7NS2 represents
Answer:
7. NS. A. 2 Apply and extend previous understandings of multiplication and division of fractions to multiply and divide rational numbers.
Step-by-step explanation:
have a nice day
Which of the following statements about XY and XZ is true?
2
6
8
X(1, -1)
Y(8, -2)
4
Z(-5.-5)
00
do
10
12
14
Answer:
[tex]\boxed{\textsf{ The correct option is \textbf{Option (D)} .}}[/tex]
Step-by-step explanation:
For complete solution kindly refer to the attachment .
Related Information :-
• Midpoint formula :-
The midpoint formula for points (x1,y1) and (x2,y2) is ,
[tex]\boxed{\sf Midpoint =\bigg( \dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\bigg) }[/tex]
• Section Formula :-
The coordinate of point dividing the line joining points (x1,y1) and (x2,y2) in ratio m:n is ,
[tex]\boxed{\sf Section\ Formula = \bigg(\dfrac{nx_1+mx_2}{m+n},\dfrac{ny_1+my_2}{m+n}\bigg)}[/tex]
