Answer:
y=28
Step-by-step explanation:
15/21=20/y
15y=420
y=28
Sally has a collection of 600 skirts. Of these shirts, 25% are blue, 30% are pink, and the rest are black. How many skirt's in Sally’s collection are black?
Answer:
270
Step-by-step explanation:
because 25% blue 30% pink
so 25+30=55
100-55=45
600×45%=270 shirts
What is the value of s?
Step-by-step explanation:
it is given r=s
then, t =100.
2s+t=180°
2s=180-100
2s=80°
s=40° = r
hope this helps you.
Multiply (8 + 3i)(3 + 5i).
39 + 49i
9 + 49i
24 + 15i2
24 + 49i + 15i2
Answer:
It's the last option "24 + 49i + 15i^2"
Step-by-step explanation:
To solve you must do FOIL, (First, Outer, Inner, Last). To do this, you must do:
8 × 3 = 24 , 8 × 5i = 40i , 3i × 3 = 9i , and
3i × 5i = 15i^2 .
Don't forget to combine like terms.
Altogether: 24 + 49i + 15i^2 .
Picture does better job at explaining FOIL⤴⤴⤴
Hope this helps :)
Answer: 9+49i
Step-by-step explanation:
what’s the mean of 8.3 9.1 8.1 8.7
Answer:
i don't know do you know
Step-by-step explanation:
2. Transversals and parallel lines are unique in that if you know one angle measure, you know them all. Use the picture below to tell the value for EACH angle if <1 = 102. *
3 points
Answer:
1:102
2:78
3:102
4:78
5:102
6:78
7:102
8:78
please help I dont understand
Step-by-step explanation:
When it says y varies directly with x it just means that y and x are proportional/equal to each other. The constant of variation and the constant of proportionality are the same thing just different way of saying it so they can confuse you and make your life miserable. Since y and x are proportional to each other and the constant of proportionalty is -5 to make an equation that represents a line you use the formula y=mx+b. That is the slope of the line. With that formula let's first plus in the x so we have y=m2+b. The formula for direct variation is y=kx as well that's good to know and it's good to memorize all these formulas. Math becaomes easier when you have the process down pat and you just need to plug numbers into different equations, expressions, and scenarios. Do m = [y1 - y2] / [x1 - x2] and you'll get the answer.
Are these functions or not functions?
0.5y+7=5(0.2+1.5y) someone please help I got y=1.36 but its wrong
Answer:
y= 6/7
Step-by-step explanation:
0.5y + 7 = 5( 0.2 + 1.5y )
Get rid of the brackets first
0.5y + 7 = 1 + 7.5y
Move the like terms
0.5y + 7 - 7.5y = 1
0.5y - 7.5y = 1 - 7
Collect the like terms
-7y = -6
Divide both sides by -7 to get y on its own
y= -6/-7
A negative number divided by a negative number gives a positive number so
y = 6/7
Answer:
y=6/7 or 0.857 aprox.(0.86)
Step-by-step explanation:
[tex]0.5y+7=5(0.2+1.5y)[/tex]
[tex]0.5y+7=1+7.5y[/tex]
[tex]7.5y-0.5y=7-1[/tex]
[tex]7y=6[/tex]
[tex]y=6/7= 0.857[/tex]
I hope this help you
Which number is a constant in the algebraic expression?
Negative x squared minus 6 y + 13 x + 7
Negative 6
Negative 1
7
13
Answer:
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
-x^2 -6y+13x+7
The constant is the term with no variable attached to it
7 is the constant
please i need help asap!
Answer:
3
Step-by-step explanation:
3
5. In your part-lime job selling kitchen knives, you have two different sets available.
The better sel sells for $35, the cheaper set for $20. Last week you sold more of the
cheaper set, in fact Iwice as many as the better sets. Your receipts for the week totaled
$525. How many of the better sets did you sell?
Answer: 8.75
Step-by-step explanation:
575 divided by 3 equals 175. Divided by 20 equals 8.75. Probably rounds up to 9 but i dont know.
k= 100- 4n
what is n if k is 99
Answer:
1/4 or 0.25Step-by-step explanation:
k= 100- 4n
what is n if k is 99
-------
99 = 100 - 4n
4n = 100 - 99
4n = 1
n = 1/4 or 0.25
--------------check
99 = 100 - 4 × 1/4
99 = 100 - 1
99 = 99
the answer is good
A rectangular painting's width is 2 inches more than twice
its length. The perimeter is 40 in. Find the dimensions.
NO LINKS NO LINKS NO LINKS
Answer:
−1(−15)(−3)
Hope this helps :)
-m2 + 18 m = 45
-m2 + m = 45/18
-m2 + m = 15/6
-m2 + m = 2.5
hope this helps
describe a pattern or sequence 5, 3, 1, -1...
Answer:
Step-by-step explanation:
The first member of the pattern is 5
Thereafter, you subtract 2 from the member on the left
5 - 2 = 3
3 - 2 = 1
1 - 2 = - 1
If a toy rocket is launched vertically upward from ground level with an initial velocity of 120 feet per second, then its height h after t seconds is given by the equation h(t) = -16t2 + 120t. How long will it take the rocket to return to the ground?
A) 7.5 seconds
B) 16 seconds
C) 3.75 seconds
D) 120 seconds
Answer:
A) 7.5 seconds
Step-by-step explanation:
Height of the ground is zero
-16t^2 + 120t = 0
Divide both sides by 16
-t^2 + 7.5t = 0
Factor out t
t(-t + 7.5) = 0
From the zero product rule
t = {0, 7.5}
0 would be time of launch
7.5 is time back to the ground
The function g(x) is a transformation of the quadratic parent function, f(x) =
x2. What function is g(x)?
a. g(x) = 1/2x^2
b. g(x) = -2x^2
c. g(x) = 2x^2
d. g(x) = -1/2x^2
The function g(x) is a transformation (flipped upside down and horizontally stretched) of the quadratic parent function, f(x) = x2. g(x) = -0.5x².
What is flipping upside down?Flipping upside down, is found by taking the negative of the original function; that is, the rule for this transformation is −f (x).
Since, g(x) is an upside down function of f(x), g(x) = -f(x).
What is stretching a graph?If we multiply a function by a coefficient, the graph of the function will be stretched.
A function h(x) represents a horizontal compression of f(x) if h(x) = f(cx) and c > 1.
A function h(x) represents a horizontal stretch of f(x) if h(x) = f(cx) and 0 < c < 1.
Since, g(x) is clearly a stretched transformation of f(x), c < 1.
The possible function g(x) = -0.5x².
Learn more about stretching a graph here
https://brainly.com/question/25753477
#SPJ2
Need help asap???????
Answer:
sorry man I dont know what it is
Jimmy wants to enlarge a sign for his taco stand. He increases the height by a scale factor of 4 and the width by a factor of 2. What is the effect on the area of the sign? times greater
After the increase in the dimensions of the sign, the effect on the area of the sign is that the new area is 8 times larger than the initial area.
The sign has the shape of a rectangle. A rectangle has four sides. The opposite sides are equal in length.
The area of a rectangle = length x width.
Jimmy is making the sign bigger by increasing the size of the length and width. Let's imagine that the width is 8cm and the length is 10cm.
The initial area of the sign = 10 x 8 = 80 cm
After the increase in the dimensions, the length is are 40cm and 16cm for the width.
New area = 40 x 16 = 640
Number of times the new area is greater than the initial area = 640 / 80 = 8 times larger
A similar question was answered here: https://brainly.com/question/18452788
HELP PLEASE HELP MEMEEE
Answer:
its 35 feet less
Step-by-step explanation:
but can u take another angled photo
what is y=2x+3 on a graph??
Answer:
points on the line: (0,3) (1,4) (-4,-5)
Step-by-step explanation:
put those points on the graph and just draw a line that connect to all of them
Lakeside amusement park charges an entry fee plus $1.50 per ticket used to go on the rides. The entry fee is the same amount for everyone. Louisa spent a total of $30.75 on the entry fee plus 15 ride tickets. Click “show your work” below and show calculations to determine how much Louisa paid for the entry fee.
Answer:
The entry fee is $8.25
Step-by-step explanation:
Total together: $30.75
She bought 15 tickets * $1.50 cost per 1 ticket
= $22.50
$30.75 (total) - $22.50 (price of tickets)= $8.25
Someone please help me
Answer:
Your answer is B = 6
Step-by-step explanation:
[tex]A^{2} +B^{2} = C^{2} \\5^{2} + B^{2} = \sqrt{61} ^{2} \\B^{2} = \sqrt{61} }^{2} -5^{2} \\B^{2} = 61 - 25\\B = \sqrt{36} \\B = 6[/tex]
Hope this helps!
A box is pulled to the right with a force of 65 N at an angle of 58 degrees to the horizontal. The surface is frictionless. The free body diagram is shown.
A free body diagram with 3 force vectors. The first vector is pointing north, labeled F Subscript N Baseline, the second vector is pointing south labeled F Subscript g Baseline = 30 N, and the third pointing 58 degrees north of east labeled F Subscript g Baseline = 65 N.
What is the net force in the x-direction?
30 N
34 N
55 N
65 N
Answer:
34 N.
Step-by-step explanation:
Net force in x direction = 65 cos 58
= 34 N.
Answer:
34N is the answer :)
Step-by-step explanation:
One example of a mathematical model is an equation that describes the relationship between two quantities.
a. True
b. False
Answer:
True
Step-by-step explanation:
Linear equations are often used to model the relationship between the dependent variable that is affected by changes in the independent variable.
For instance, the linear function: f(x) = 2x + 3, where f(x) is the output (dependent variable) depends on the value of the input, x (independent variable).
Therefore, the correct answer is True.
Answer Fast Plsssss please hellpppp me
Answer:
y = 2/3x
Step-by-step explanation:
Answer:
y=2/3m
Step-by-step explanation:
the slope, m, equals rise over run
the slope rises 2, then runs 3, making 2/3
Hope this helps!
A local catering
company is offering a
Spring BBQ special that
feeds 30 people for
$195. How much would it
cost to feed 50 people?
A construction company can remove 6 3/4 metric tons of dirt from a construction site in 1 7/8 hours. What is the unit rate in metric tons per hour? Write your answer as a fraction or a mixed number in simplest form.
Answer:
567
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
2x2=4-2 =2
. Only 2% of a large population of 100-ohm gold-band resistors have resistances that exceed 105 ohms. a. For samples of size 100 from this population, describe the sampling distribution of the sample proportion of resistors that have resistances in excess of 105 ohms. b. What is the probabilit
Using the information given above, the sampling distribution of the sample proportion of 100-ohm gold-band is 2.
Sampling distribution of proportion, P = 2% = 0.02 Sample size, n = 100The sampling distribution of the sample proportion can be calculated thus:
Distribution of sample proportion = npDistribution of sample proportion = (100 × 0.02) = 2
Therefore, there is a probability that only 2 of the samples will have resistances exceeding 105 ohms.
Learn more : https://brainly.com/question/18405415
A cheetah runs 296 feet in 4 seconds. How far could a cheetah run in 10
seconds at this rate?
Answer:
740 feet
Step-by-step explanation:
The speed of the cheetah is 74 feet per second:
speed = distance ÷ time
= 296 ÷ 4 = 74 feet per second
In 10 seconds:
distance = speed × time
= 74 × 10
= 740 feet
Answer:
740 Feet
Step-by-step explanation:
Given: 296 ft= 4 sec
To Find: 10 sec = [tex]\left[?}\right][/tex] ft
First we need to Find How many feet are in 1 second.
To find that,
Do 296 divided by 4
=
74
So 1 second = 74 Feet.
Then 74 ft Times 10 second
Which gives you
740 Feet.
Therefore, at 10 second rate gives you 740 Feet.