Answer:
5x-2=3x+4
x=3
Step-by-step explanation:
Hope I helped!
if 8 out of 40 people over the age 95 are female, how many are male?
Answer:
32
Step-by-step explanation: (40-8=32) There are 32 male's
Answer:
32
Step-by-step explanation:
8 out of 40 people is a ratio of 20 %
32 out of 40 people is a ratio of 80%
Therefore it would be 32 people are males. :D
Hope this helps
A person making $500 a week receives a 12% raise, which is an increase in their salary. Find the person’s new weekly salary.
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.
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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
Tara wants to draw rectangles that each have an area of 24 square inches. The length and width of each rectangle are whole numbers of inches.
Answer:
it could be the width is 8 and the length is 3
Step-by-step explanation:
3 x 8= 24 hope this helps
What slope would make the lines
parallel?
y = 1/2x - 1
y = / x + 2
Help&EXPLAIN
Don’t use for points or will be reported and I’ll take the points back
Answer:
A. obtuse
Step-by-step explanation:
This is because in an obtuse angled triangle one of its angle is greater than 90° and here angle RQS = 112° which is greater than 90°, so it's a obtuse triangle.
Answer:
A. obtuse triangle
Step-by-step explanation:
the degree of RQS is greater than 90º
Calculate B for the figure below
7 mi
4 mi
O 6.28 mi
O 28 mi
25.12 mi
O 12.56 mi
PLEASEEEE HELPPPP
Answer:6.28 mi 2
Step-by-step explanation:
School sucks ikr
#3c Part 1: What postulate did you make use of to answer parts a and b?
1 point
Segment Addition Postulate
Angle Addition Postulate
Corresponding Angles Postulate
Ruler Postulate
Answer:
Option C : Correponding Angles Postulates .
Step-by-step explanation:
Hope It May Help You !!!
Which expression is equivalent to the measure of angle 4 in the image below?
Answer:
2 would be ur answer
Step-by-step explanation:
sry i have to put more then 20 chrarcters
Answer: 2 is equivalent to 4
Step-by-step explanation:
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
which is the best esrimate of acube 4.2
Answer:
5.2 maybe I don't now and if wrong
what is -1 3/10 + (-3.8) show your work
Step-by-step explanation:
Sln
-13/10 +(-3.8)(remove bracket)
-13/10-3.8(then divide )
-1.3-3.8
-51
The given term -1 ³/₁₀ + (-3.8) can be simplified as -5.1.
What is Simplification?Simplification in mathematical terms is a process to convert a long mathematical expression in simple and easy form.
The given term is,
-1 ³/₁₀ + (-3.8)
First simplify fraction term,
-13/10 + (-3.8)
Solve bracket term,
-13/10 - 3.8
Use least common multiple approach to solve further,
= (-13-38)/10
= -51/10
= -5.1
The expression -1 ³/₁₀ + (-3.8) can be simplified as -5.1.
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-2xSquared +4x-1 minus 6x squared+3x-9
Aliyah is a textbook salesperson. Last week she made $1,200 in commission. If she sold $8,000 worth of text books, what percent is her commission?
Answer:
1200/8000=0.15 so 15%
Step-by-step explanation:
........
XYZ Corporation recorded the number of employee absences each week over a period of 10 weeks. The result is the data list 5, 3, 4, 1, 4, 7, 2, 6, 3, 5. Find the standard deviation of the number of absences each week.
Answer:
4 ansences
Step-by-step explanation:
40 / 4 is 10 so ans is 10 absences
Help me pls pls pls
Answer:
1. C 2. B 3. E 4. also B
Step-by-step explanation:
Three potential employees took an aptitude test. Each person took a different version of the test. The scores are reported below. Tobias got a score of 84.584.5; this version has a mean of 66.966.9 and a standard deviation of 1111. Kiersten got a score of 281.8281.8; this version has a mean of 261261 and a standard deviation of 2626. Pierce got a score of 7.697.69; this version has a mean of 7.27.2 and a standard deviation of 0.70.7. If the company has only one position to fill and prefers to fill it with the applicant who performed best on the aptitude test, which of the applicants should be offered the job?
Answer:
Tobias should be offered the job.
Step-by-step explanation:
Z-score:
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this question:
The applicant with the highest z-score should be chosen.
Tobias:
Score of 84.5, in a version with mean 66.9 and standard deviation 11. His z-score is found when [tex]X = 84.5, \mu = 66.9, \sigma = 11[/tex]
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{84.5 - 66.9}{11}[/tex]
[tex]Z = 1.6[/tex]
Kiersten:
Score of 281.8, in a version with mean 261 and standard deviation 26. His z-score is found when [tex]X = 281.8, \mu = 261, \sigma = 26[/tex].
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{281.8 - 261}{26}[/tex]
[tex]Z = 0.8[/tex]
Pierce:
Score of 7.69, version with mean 7.2 and standard deviation 0.7. His z-score is found when [tex]X = 7.69, \mu = 7.2, \sigma = 0.7[/tex].
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{7.69 - 7.2}{0.7}[/tex]
[tex]Z = 0.7[/tex]
Due to the higher z-score, Tobias should be offered the job.
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
Please I Need Help I can't Figure It out
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!
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:
Help me please and I will love you forever
Answer:
d²+4a+6 is the answer in ky opinion
help please and thanks
Answer:
C
Step-by-step explanation:
6/9 simplified is 2/3 they're equal to each other so they're proportional
Hope this helps :)
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
Can you help me please!
Answer:
10 and under: 2, 11-15: 6, 16-20: 7, over 20: 5
Step-by-step explanation:
Explain your answer !!
Have a nice day
Will give braisnlt
Answer:
x = 4 and y = 1
Step-by-step explanation:
The given equations are :
2x+5y = 13 ...(1)
3x-2y = 10 ...(2)
We can use elimination method to solve the given equations.
Multiply equation (1) by 3 and equation (2) by 2.
6x+15y=39 ...(3)
6x-4y=20 ...(4)
Subtract equation (3) from (4).
6x-4y-(6x+15y) = 20-39
6x-4y-6x-15y = -19
-19y=-19
y = 1
Put the value of y in equation (1).
2x+5y = 13
2x+5=13
2x=8
x = 4
So, the solution of the given equations are x = 4 and y = 1.
y = 3x +4
y = -2
A method by solving systems of equations by adding or subtracting to eliminate a variable
Sam traveled 56 miles in 8 hours. If he traveled at the same rate on the next day,how far can he go the next day,how far could he go in 14 hours.
Answer:
Step-by-step explanation:
56 miles/(8 hours) = 7 miles/hour
14 hours × 7 miles/hour = 98 miles
Calculus BC Help - Series
6. Let f be the function defined by f(x)=1x2+9.
(a) Evaluate the improper integral ∫∞3f(x) dx, or show that the integral diverges.
(b) Determine whether the series ∑n=3∞f(n) converges or diverges. State the conditions of the test used for determining convergence or divergence.
(c) Determine whether the series ∑n=1∞(−1)n(en⋅f(n))=∑n=1∞(−1)n(n2+9)en converges absolutely, converges conditionally, or diverges.
Answer:
So you have a power of x^2, notice if you have a harmonic series, or if it looks familiar, which it should, hint (1/x) Now integrate: let u= x/3 dx=3dunow integral (1/u^2+1) recognize thats arcso you get a result of: arctan(x/3)/3+c