Answer:
its 2.5cm i guess so.. check my answer given here
The height of a weather balloon as it is launched can be represented by an exponential model in the form y = a* b^x where y is the height in km after x minutes. After 2 minutes, the recorded height is 3 km, and after 3 minutes, it is 9 km. Which of the following represents another point on the graph of this exponential model?
Group of answer choices
(1,-3)
(1, 1)
(4, 15)
(4, 16)
Answer:
Step-by-step explanation:
4,15
The point (4, 3) is on the graph of this exponential model.
What is an equation?An equation contains one or more terms with variables connected by an equal sign.
Example:
2x + 4y = 9 is an equation.
2x = 8 is an equation.
We have,
We can use the given information to form two equations with two unknowns (a and b) and solve for them.
From the first data point (2, 3 km):
y = a b^x
3 = a b^2
From the second data point (3, 9 km):
y = a b^x
9 = a b^3
Dividing the second equation by the first equation:
9/3 = (a b³) / (a b²)
3 = b
Substituting b = 3 into the first equation:
3 = a x 3²
a = 1/9
So the exponential model is y = (1/9) x 3^x.
To find another point on the graph of this exponential model, we can choose a value for x and calculate y.
Let's try x = 4:
y = (1/9) x 3^4
y = 1 x 3/3 x 3/3 x 3/3 x 3/9
y = 3
Therefore,
The point (4, 3) is on the graph of this exponential model.
Learn more about equations here:
https://brainly.com/question/17194269
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At a tea shop, a package of vanilla tea weighs 1 ounce and costs $2. Cinnamon tea is priced at 2 ounces per dollar. Use rates to show which tea is more expensive per ounce. Include a model in your response.
What is the mean of the following data set?
82, 100, 92, 66, 72, 96, 70, 88.
Answer:
83.25
Step-by-step explanation:
add all the numbers and divide by 8. 666/8 = 83.25
Answer:
83.25
Step-by-step explanation:
Mean = sum of all terms / number of terms
82+100+92+66+72+96+70+88 = 666
666 / 8 = 83.25
1. Using the side lengths, determine whether the triangle is acute, obtuse, or right.
11
16
19
Answer:
Obtuse
Step-by-step explanation:
Shipra's haircut cost $14. She left a 25% tip.
What was the total cost of the haircut with tip?
Enter your answer in the box.
What is the measure of angle A please HELP I’ll give you BRAINLIEST
Answer:
Option (3)
Step-by-step explanation:
By applying cosine rule in the triangle ABC,
BC² = AC² + AB² - 2(AC)(AB)cosA
5² = 3² + 7²- 2(3)(7)cosA
25 = 9 + 49 - 42cos(A)
25 = 58 - 42cos(A)
cos(A) = [tex]\frac{33}{42}[/tex]
A = [tex]\text{cos}^{-1}\frac{11}{14}[/tex]
A = 38.21°
A ≈ 38°
Option (3) will be the correct option.
Justin picks 35 cherries, and fills 5 baskets evenly.
How many cherries are in each basket?
Answer:
7 cherries
Step-by-step explanation:
35/5= 7
Simple Math
Aaliyah has x nickels and y pennies. She has a minimum of 20 coins worth no more than $0.40 combined. Solve this system of inequalities graphically and determine one possible solution.
Answer:
[tex](x,y) = (5,15)[/tex]
Step-by-step explanation:
Given
[tex]Nickels = x[/tex]
[tex]Pennies = y[/tex]
Minimum of 20 coins means:
[tex]x + y \ge 20[/tex]
A nickel worth $0.05
A penny worth $0.01
So, the worth can be represented as:
[tex]0.05x + 0.01y \le 0.40[/tex]
See attachment for graph
From the attachment, the solution is:
[tex](x,y) = (5,15)[/tex]
Find the value of each variable in the circle to the right. The dot represents the center of the circle.
Answer:
b = 90 degrees
a= 68.5 degrees
angle a = 1/2(137)
a = 68.5
Composite figures. I need help with this.
Write an equation. That gives the total weight,w,of the soil in pounds when Yuki stacks b bags.
Answer:
b × 40 = w
Step-by-step explanation:
Times the number of bags by the weight of each bag to equal w
Answer:
it is w=40b
Step-by-step explanation:
What is 3 + 3? Please
Answer:
the answer is 6
Step-by-step explanation:
Answer:
3+3=6
Step-by-step explanation:
just put 3 lines and 3 more lines then count all them together and it equals 6
hope i help have a great day and can i pls have Brainliest
Whats the square root of 826 also looking for a minecraft girI needs to be 15 or older
Answer:
28.740,
Step-by-step explanation:
Answer:
28.7 and plus dont use people for internet gaming sidechicks its just wrong go find someone that can actually be there for you
Step-by-step explanation:
Tally marks are always
recorded in bunches of
(4 5 1 2)
Answer:
what is the ?
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
Please I Need Help I can't Figure It out
Find the equation of the function in the graph.
A. y=x
B. y= |x|
C. y= x3
D. y= x2
Answer:
C
Step-by-step explanation:
YEAH
Please help me with this question.
Answer:
25 cups per hour that should be it
18
Which data set would be numerical?
A.favorite color
B.height of trees
C.place of birth
D.hair color
Answer:
b height of trees
Step-by-step explanation:
Will mark brainliest please help me Explain step by step how to find the equation of a line that goes through the points ( 7, 2 ), and ( 0, 4 ). Essay
Answer:
Step-by-step explanation:
Put the ordered pairs into the slope formula x=y2-y1/x2-x1 then you will get your slope of the line. once you have your slope pick an ordered pair and put it in point slope y-y1=m(x-x1) distribute and you will get your answer.
formula of a linear equasion:
y=mx+b
m=slope of the formula
to find m:
[tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
plug in: [tex]\frac{4-2}{0-7} =\frac{2}{-7}[/tex]
m= [tex]-\frac{2}{7}[/tex]
y=[tex]-\frac{2}{7}[/tex]x+b
b is the y intercept
plug in to find b:
[tex]2=7(-\frac{2}{7} )+b\\2=-2+b\\4=b[/tex]
∴ [tex]y=-\frac{2}{7} x+4[/tex]
what is 30% of 70?
I am confused
Answer:
21
Step-by-step explanation:
Answer:
Its 21
Step-by-step explanation:
Which sum is equal to the expression - 5x3 + 2x2 + 9x+2/
(x²+ 2)²
Answer:
Option C
Step-by-step explanation:
Given expression is [tex]\frac{-5x^3+2x^2+9x+2}{(x^2+2)^2}[/tex]
Option A
[tex]\frac{A}{x^2+2}+ \frac{Bx+C}{(x^2+2)^2}[/tex]
= [tex]\frac{A(x^2+2)}{(x^2+2)^2}+ \frac{Bx+C}{(x^2+2)^2}[/tex]
= [tex]\frac{Ax^2+2A+Bx+C}{(x^2+2)^2}[/tex]
Numerator is a quadratic polynomial, while the expression has the numerator as a cubic .
Therefore, both the expressions are not equivalent.
Option B
[tex]\frac{A}{(x^2+2)^2}+ \frac{Bx+C}{(x^2+2)^2}[/tex]
= [tex]\frac{A+Bx+C}{(x^2+2)^2}[/tex]
Here, numerator of the expression is a linear polynomial which is not equal to given expression.
Therefore, both the expressions are not equivalent.
Option C
[tex]\frac{Ax+B}{(x^2+2)}+ \frac{Cx+D}{(x^2+2)^2}[/tex]
= [tex]\frac{(Ax+B)(x^2+2)}{(x^2+2)^2}+ \frac{Cx+D}{(x^2+2)^2}[/tex]
= [tex]\frac{Ax^3+Bx^2+2Ax+2B+Cx+D}{(x^2+2)^2}[/tex]
= [tex]\frac{Ax^3+Bx^2+x(2A+C)+D}{(x^2+2)^2}[/tex]
Here, numerator is a cubic polynomial.
Therefore, both the expressions are equivalent.
Option D
[tex]\frac{Ax+B}{(x^2+2)^2}+ \frac{Cx+D}{(x^2+2)^2}[/tex]
= [tex]\frac{x(A+C)+(B+D)}{(x^2+2)^2}[/tex]
Numerator is a linear polynomial.
Therefore, sum is not equal to the given expression.
Option C will be the answer.
Find the area of the composite figure. First, find the area of the triangle. 3 cm Triangle Area = [?] cm2 6 cm Rectangle Area = [] cm2 9 cm Total Area of Composite Figure = [ ] cm2 Enter
Answer:
The area of the triangle is 9 and the area of the regtangle is 54 so when you add them you will get 63 i hope it will help!
Explain your answer !!
Have a nice day
Will give braisnlt
Answer:
Equations:
[tex]4H + 3P = 13.75[/tex]
[tex]2H + 5P = 11.25[/tex]
[tex]H = 2.50[/tex] --- Hot dog
[tex]P = 1.25[/tex] --- Pretzel
Step-by-step explanation:
Represent hot dogs with H and Pretzels with P.
For Tina:
[tex]4H + 3P = 13.75[/tex]
For Doug:
[tex]2H + 5P = 11.25[/tex]
Solving for the price of both items:
We have:
[tex]4H + 3P = 13.75[/tex] --- (1)
[tex]2H + 5P = 11.25[/tex] --- (2)
Multiply (2) by 2
2 * ([tex]2H + 5P = 11.25[/tex])
-------------------
[tex]4H + 10P = 22.50[/tex] --- (3)
Subtract (3) from (1)
[tex]4H + 3P = 13.75[/tex]
[tex]4H + 10P = 22.50[/tex]
----------------------
[tex]4H - 4H + 3P - 10P = 13.75 - 22.50[/tex]
[tex]3P - 10P = 13.75 - 22.50[/tex]
[tex]-7P = -8.75[/tex]
Solve for P
[tex]P = \frac{-8.75}{-7}[/tex]
[tex]P = 1.25[/tex]
Substitute 1.25 for P in (2)
[tex]2H + 5P = 11.25[/tex]
[tex]2H + 5 * 1.25 = 11.25[/tex]
[tex]2H + 6.25 = 11.25[/tex]
Collect Like Terms
[tex]2H = 11.25-6.25[/tex]
[tex]2H = 5[/tex]
Solve for H
[tex]H = \frac{5}{2}[/tex]
[tex]H = 2.50[/tex]
Are 6(n + 3) - 4 and 6n + 14 equivalent expressions?
Answer:
yes
Step-by-step explanation:
because if you multiply 6 and n it is 6n and 6 x 3 are 18 but subtract 4 and it is correct
determine whether ABCD is a parallelogram The vertices are A(-2,3) , B(3,2), C(2,-1) and D(-3,0)
Answer:
Yes, this is a parallelogram
Step-by-step explanation:
.....................
Answer:SORRY I DONT UNDERSTAND WHAT ARE YOU SAYING
I need help with algebra 20 points
Answer:
4s
Step-by-step explanation:
s is the original number of stickers, and since she wants four times as many stickers, you just multiply by 4 so you get 4s
a new hospital in cedarburg starts out with 12 junior residents and 6 senior residents on its staff. management plans to hire additional personnel at a rate of 1 junior resident per month and 3 senior residents per month. Eventually, there will be an equal number of each on the hospital staff. How long will that take? How many of each type will there be?
Answer:
19 years and 29 month and 92 weeks
Step-by-step explanation:
The price of a carton of eggs at Supermarket A is $2.10. The price of a carton of eggs at Supermarket B is 40% less than the price at Supermarket A. What is the price of a carton of eggs at Supermarket B ?
PLEASE ANSWER!
Answer:
84 Percentage increase
Step-by-step explanation:
Detailed calculations & verification
Introduction. Percent, p%
'Percent (%)' means 'out of one hundred':
p% = p 'out of one hundred',
p% is read p 'percent',
p% = p/100 = p ÷ 100.
40% = 40/100 = 40 ÷ 100 = 0.4.
100% = 100/100 = 100 ÷ 100 = 1.
Increase the number by 40% of its value.
Percentage increase = 40% × 210
New value = 210 + Percentage increase
Calculate the New Value
New value =
210 + Percentage increase =
210 + (40% × 210) =
210 + 40% × 210 =
(1 + 40%) × 210 =
(100% + 40%) × 210 =
140% × 210 =
140 ÷ 100 × 210 =
140 × 210 ÷ 100 =
29,400 ÷ 100 =
294
Calculate absolute change (actual difference)
Absolute change (actual difference) =
New value - 210 =
294 - 210 =
84
How many x-intercepts would the function shown below have?
F(x) =x^2 (x^2+9) (x^2-3) (5x+1) ^2
Step-by-step explanation:
step 1. x intercepts are where y = 0
step 2. y = 0 when factors are equal to zero
step 3. the x intercepts are 0, sqr(3), -sqrt(3), -1/5
step 4. answer: 4.