What's the answer to this?
I'm pretty sure the answer is 40
Kelly's new snowboard is 120% longer than her old snowboard. If the new snowboard is 150 cm, how long is her old snowboard?
12.5 Step-by-step explanation: My friend helped me
The length of Kelly's old snowboard is 125 cm long.
How to find the percentage from the total value?Suppose the value of which a thing is expressed in percentage is "a'
Suppose the percent that considered thing is of "a" is b%
Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).
Thus, that thing in number is
[tex]\dfrac{a}{100} \times b[/tex]
For this case, let we suppose that:
x = length of Kelly's old snowboard (in cm)
Then, as we know that: new snowboard is 120% longer than her old snowboard, thus:
[tex]\dfrac{x}{100} \times 120 = \text{Length of new snowboard} = 150[/tex]
or
[tex]\dfrac{x}{100} \times 120 = 150\\\\\text{Multiplying 100/120 on both the sides}\\\\x \times \dfrac{120}{100} \times \dfrac{100}{120}= 150 \times \dfrac{100}{120}\\\\x \times 1 = x = \dfrac{150 \times 100}{120}\\\\x = \dfrac{15000}{120} = 125 \: \rm cm[/tex]
Thus, the length of Kelly's old snowboard is 150 cm long.
Learn more about percent here:
https://brainly.com/question/11549320
A test was given to a group of students. The grades and gender are summarized below
Male
Female
Total
A
11
19
30
B
5
14
19
С
3
15
18
Total
19
48
67
If one student is chosen at random from those who took the test, find the probability that the student got a
'an 'A" GIVEN they are male. Write your answer as a reduced fraction.
P(A male) =
Question Help: D Video Message instructor
Answer:
★ 11/30 is the right answer. ★Step-by-step explanation:
Number of male students who got 'A' in the test is 11Number of female students who got 'A' in the test is 19Total students who got 'A' in the test is 30Probability that the male student got an 'A' is P(A | male) = (Number of male students who got 'A' in the test)/(Number of total students who got 'A' in the test) = 11/30solve
3x-11x-20=0.
.
Answer: x=-5/2
Step-by-step explanation:
1.add similar elements
-8x-20=0
2.add 20 to both sides
-8x-20+20=0+20
3.simplify
-8x=20
4. divide both sides by -8
-8x/-8 = 20/-8
5.simplify
x=-5/2
PLS HELP NUMBER 7!!!!!
Sarah because she ate half of it and cole only afe 2 /5 which isn't even half So its B
A. 15/2
B. 9/2
C. 13/3
D. 10/3
Answer:
its A
Step-by-step explanation:
help me for ez brainlist
Answer:
23 in^2
Step-by-step explanation:
Answer: A
Step-by-step explanation: add all of them together
Mr. Peters made 5000 milliliters of fruit punch for a luncheon how many liters of fruit punch did she make
Answer: She made 5 liters of punch for a lunch.
Step-by-step explanation:
We know that,
1 liter = 1000 milliliters
Then, 1 milliliter = [tex]\dfrac{1}{1000}[/tex] liters
We are given that,
Mr. Peters made 5000 milliliters of fruit punch for a lunch.
i.e. in liters, it will be [tex]\dfrac{5000}{1000}[/tex] liters.
i.e. in liters, it will be 5 liters.
i.e. She made 5 liters of fruit punch for a lunch.
Hence, she made 5 liters of fruit punch for a lunch.
Plz help me get the right answer
Given:
Subtract [tex]-7x^2+1[/tex] from [tex]-2x^2-4x[/tex].
To find:
The result after subtraction.
Solution:
Subtract [tex]-7x^2+1[/tex] from [tex]-2x^2-4x[/tex]. It canbe written as
[tex]-2x^2-4x-(-7x^2+1)[/tex]
Using distributive property, we get
[tex]=-2x^2-4x-(-7x^2)-(1)[/tex]
[tex]=-2x^2-4x+7x^2-1[/tex]
On combining like terms, we get
[tex]=(7x^2-2x^2)-4x-1[/tex]
[tex]=5x^2-4x-1[/tex]
Therefore, the required expression after subtraction is [tex]5x^2-4x-1[/tex].
question (.1) A suit costs $300 to make. What is:
(a) the profit
(b) the selling price
if it is sold for a 12% profit?
question (2.) Andrew Prescot bought his car for $63 500 and sold it at a 20% loss.
(a) What was his loss?
(b) What did he sell the car for?
Answer:
this is a required answer.
ILL GIVE BRAINLIST IF CORRECT
Find the rate of change between the two order pairs (1,4) and (-3,-2)
2/3
3/2
4
-1/3
Answer:
I believe the answer is 3\2
Step-by-step explanation:
PLZ THANK FIVE STAR AND GIVE BRAINLIEST:)
If g(x) =− 3x^2 + 5x − 7, determine g(− 3).
Answer:
what are your answer choices
Angela puts $520 in an account that eams 6% per year. What interest will she get at the end of 1 year?
Answer:
$31.20
Step-by-step explanation:
Calculate ZQRP
12 cm
Р
R
18 cm
Answer:
<QRP = 48.2°
Step-by-step explanation:
Given:
PR = 18 cm
QR = 12 cm
Required:
<QRP = angle R
Solution:
Reference angle = <R (<QRP)
Adjacent side length = 12 cm
Hypotenuse = 18 cm
Thus:
Cos (R) = 12/18
cos (R) = 0.6667
[tex] R = Cos^{-1}(0.6667) [/tex]
[tex] R = 48.1871227 [/tex]
<QRP = 48.2° (nearest tenth)
factor the expression: 7x(x^2-1)-3(x^2-1)
Answer:
x = 1
Step-by-step explanation:
The factors of the given expression is as follows:
[tex]7x(x^2-1) -3(x^2-1)\\\\7x^3 - 7x - 3x^2 +3\\\\7x^3 - 3x^2 -7x + 3[/tex]
If we considered x = 1
So
7 - 3 -7 + 3 = 0
0 = 0
Hence, the factor would be x = 1
Factorise
P(x)= (x+3)(12x^2-3)+(2x-1)(x^2-9)
And
Q(x)= 4x^4-x^2
Answer:
a2 answers to exercises
ii. yes. suppose a is negative, so write a = -b where b is positive. let c be a
positive number such that c" = b. then (-c)" = a because (-1)" = -1 since
n is odd.
ii, §1, p. 24
3. x negative, y positive 4. x negative, y negative
ii, §3, p. 33
5. y = -~x + i 6. y = -ix + s 7. x = j2
9 9j3 8. y = --;:;- x + 4 - --;:;- 9. y = 4x - 3 10. y = -2x + 2
",3+3 ",3+3
ii. y= -!x+3+ j'!- 12. y=j3x+s+j3 19. -! 20.-8
21. 2 + j2 22.!<3 + j3) 23. y = (x - n>(j22_ n) + 1
24. y=(x-j2)c~-~)+2 25. y= -(x+ l)(j23+ 1)+2
26. y = (x + 1)(3 + j2) + j2 29. (a) x = -4, y = -7 (b) x = ~, y = i
(c) x = -!, y = 1 (d) x = - 6, y = - 5
ii, §4, p. 35
1.j97 2.j2 3.js2 4.ji3 5.!j5 6.(4,-3) 7. sands 8.(-2,5)
9. sand 7
ii, §8, p. 51
5. (x - 2)2 + (y + 1)2 = 25 6. x 2 + (y - 1)2 = 9 7. (x + \)2 + y2 = 3
8. y + ¥ = 2(x + w 9. y - 1 = (x + 2)2 10. y + 4 = (x - \)2
ii. (x + 1)2 + (y - 2)2 = 2 12. (x - 2)2 + (y - \)2 = 2
13. x + ¥- = 2(y + !)2 14. x-i = (y + 2)2
iii, §1, p. 61
1. 4 2. -2 3. 2 4. i s. -! 6. 0 7. 4 8. 6 9. 3 10. 12 ii. 2
12. 3 13. a
Answer:
Q is x^2((4x+1) (4x-1)) and P is (2x-1)(x-3) (x+3) + 3(x+3)(4x+1)(4x-1)
Step-by-step explanation:
You can further factor the equations by simplifying certain areas, i.e. taking 3 out of (12x^2-3) to make it factorable, or taking x^2 out of the second one to make it factorable
4x + 2x + 15 > 37
“With a step-by-step explanation be specific”
Step-by-step explanation:
Combine like-terms: 4x + 2x = 6xNew equation: 6x + 15 > 37Subtract 15 from both sides: 6x > 22Divide both sides by 6: x > 22/6Answer: x > 3 2/3Help me plz with 5, 6, 7
Answer:
C.
C.
A.
Step-by-step explanation:
elgooG
ill give brainliest!! please help with algebra!! Find the factors of these trinomials
Step-by-step explanation:
Use formula:
(a + b)^2 = a^2 + 2ab + b^2Q12
16x^4 - 16x^2 + 4 =(4x^2)^2 - 2*4x^2*2 + 2^2 =(4x^2 - 2)^2 = 4(2x^2 - 1)^2Q13
81p^6 + 90p^3 + 25 = (9p^3)^2 + 2*9p^3*5 + 5^2 = (9p^3 + 5)^2Q14
4x^2 - 60x + 225 =(2x)^2 - 2*2x*15 + 15^2 =(2x^2 - 15)^2Q15
25x^4 + 50x^2 + 25 = (5x^2)^2 + 2*5x^2*5 + 5^2 = (5x^2 + 5)^2 =25(x^2 + 1)^2Q16
36y^2 - 156y + 169 = (6y)^2 - 2*6y*13 + 13^2 = (6y - 13)^2Q17
144b^4 - 24b^2 + 1 =(12b^2)^2 - 2*12b^2*1 + 1^2 = (12b^2 - 1)^2Q18
49q^8 + 28q^4 + 4 = (7q^4)^2 + 2*7q^4*2 + 2^2 = (7q^4 + 2)^2Please help me first thanks
Answer:
B
Step-by-step explanation:
because it is a positive number so it goes left
Answer:
C
Step-by-step explanation:
Lookin at the graph we see P = - 4
If Q has to be 6 and a half away from P then
it can be towards the negative side at -4+(-6 and a half) = - 10 1/2 (not an option given)
and
it can be towards the positive side -4 + (6 and a half) = 2 1/2 (C)
FIND THE VOLUME OF THIS PLEASE!!!!
Answer:
60
Step-by-step explanation:
length * width * heigth so 4*3*5=60cm^3
Answer:
the volume is 60cm
Step-by-step explanation:
hope this helped :)
help ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
CL=9
Step-by-step explanation:
angle B=30
so angle A=60
Since AL bisects angle A, angles LAB and CAL both =30
Then triangle ALB is isosceles since angles B and LAB are equal
Therefore segment AL=segment LB
then
sin angle CAL (30)=CL/LB
.5=CL/18
CL=9
Graph the line whose y-intercept is - 4 and whose x-intercept is -2.
Answer:
Answer is (-2,-4). Place this on a line graph.
Step-by-step explanation:
The below straight line represents the graph of the equation with a y-intercept of -4 and an x-intercept of -2.
To graph the line with a y-intercept of -4 and an x-intercept of -2, we can plot these two points and then draw a straight line passing through them.
The y-intercept is the point (0, -4), which means the line intersects the y-axis at -4.
The x-intercept is the point (-2, 0), which means the line intersects the x-axis at -2.
Plotting these two points on a coordinate plane, we get below shown a straight line.
This straight line represents the graph of the equation with a y-intercept of -4 and an x-intercept of -2.
Learn more about the Lines here:
brainly.com/question/14511992
#SPJ4
3. Calculate the slope of the line given the two points. (1.6) and (3.9)
Answer:
m = 3/2
Step-by-step explanation:
Audrey has $111 to spend on a tennis racket and lessons. The racket costs $55 and the lessons cost $14 per hour. Define a variable. Then write and solve an equation to find how many hours of lessons she can afford ?
( pls answer this )
Answer:
Audrey can afford 4 hours of lesson.
Step-by-step explanation:
Given that:
Amount Audrey has to spend = $111
Cost of racket = $55
Cost per lesson = $14
Let,
y be the total cost
x be the number of hours
According to given statement;
y = 14x + 55
111 = 14x + 55
111 - 55 = 14x
14x = 56
Dividing both sides by 14
[tex]\frac{14x}{14}=\frac{56}{14}\\x=4[/tex]
Hence,
Audrey can afford 4 hours of lesson.
the surface of a cube is 13 1/2 cm squared. how long is one side of the cube
A cube has 6 sides. Divide the surface area by 6 to get the area of one side:
13 1/2 /6 = 2 1/4
The area of one side is S^2
To fins the length of the sides find the square root of the area:
Side = sqrt(2 1/4)
Side = 1 1/2 cm.
Given the function defined in the table below, find the average rate of change, in
simplest form, of the function over the interval 1 < x < 11.
Answer:
Step-by-step explanation:
simplify the following
Answer:
a). 6ab. b) C6 c)10y7 d)12g4h5Compare the lengths of the segments. Rope C is _______ times as long as rope A. Write a multiplication equation
Answer:
Twice ; c = 2a ; a = c/2
Step-by-step explanation:
Since the drawing area has been gridded, accurate calculation could easily be performed ;
Rope A occupies 5 boxes
Rope C occupies 10 boxes
Hence,
10 boxes for C / 5 boxes for A
Therefore,
Rope C is Twice the length of Rope A.
If length of Rope A = a ; length of Rope C = c
Then, a multiplication equation for the length of Rope C equals ; c = 2a
Division equation :
a = c/ 2
Evaluate d-5 when d = 11
Answer:
6
Step-by-step explanation:
substitute 11 for d
11-5=6
