Answer:b=7
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
2(3b−1)=40
(2)(3b)+(2)(−1)=40(Distribute)
6b+−2=40
6b−2=40
Step 2: Add 2 to both sides.
6b−2+2=40+2
6b=42
Step 3: Divide both sides by 6.
6b/6=42/6
b=7
Happy Paws charges $19.00 plus $4.50 per hour to keep a dog during the day. Woof Watchers charges $10.00 plus $5.75 per hour. Complete the equation and solve it to find for how many hours the total cost of the services is equal. Use the variable h to represent the number of hours.
Answer:
Hours are equal: 7.2
Cost of service are equal: 51.4
Step-by-step explanation:
Happy Paws:
y = 4.5h + 19
Woof Watchers:
y = 5.75h + 10
To solve for the hours are equal:
y = 4.5h + 19
y = 5.75h + 10 (Multiply by -1)
y = 4.5h + 19
-y = -5.75h - 10
0 = -1.25h + 9
-9 = -1.25h
h = 7.2
To solve for when the services are equal:
y = 4.5h + 19
y = 4.5(7.2) + 19
y = 32.4 + 19
y = 51.4
Look at the pattern shown below.
2, 4, 16, 256 ...
What is f(n+ 1) in terms of f(n), where n represents the position of a term in this pattern?
A. (F(n))^2
B. 2(f(n))
C. (F(n)-1)^2
D. 2(f(n)-1)
Answer: (a)
Step-by-step explanation:
Given
The pattern is 2, 4, 16, 256...
From the pattern, we can see that the next term is square of the previous i.e.
[tex]\Rightarrow 4=2^2\\\Rightarrow 16=4^2\\\Rightarrow 256=16^2[/tex][tex]\Rightarrow 4=2^2\\\Rightarrow 16=4^2\\\Rightarrow 256=16^2[/tex]
So, for the [tex]n^{th}[/tex] term, the function is [tex]f(n)[/tex]
For the next term, it is [tex]f(n+1)[/tex]
So,
[tex]\Rightarrow f(n+1)=[f(n)]^2[/tex]
What is the value of w?
Answer:
180 - 35 - 74 = 71 degrees is the angle value that is right next to 35 degree angle.
35 + 71 = 106
180 - 106 = 74.
So w = 74 degrees.
EMERGENCY PLSS SOMEONE HELP ME RN
What is the volume of the rectangular pyramid ?
14 ft
9.5 ft
15 ft
9.5 ft
Step-by-step explanation:
trust in me pls I am serious this is the right answer
What is the slope-intercept equation of the line below?
y-intercept = (0, 2)
slope =
11
Answer:
If the slope is 11, and the y-intercept is (0, 2), the answer is: y = 11x + 2.
The picture says the slope is -1/4. The answer to the question in the picture is: y = -1/4x + 2.
Step-by-step explanation:
Slope form is
y = mx + b.
m is the slope.
b is the y value of y intercept.
I need help over here
Answer:
The area consists of 3 semi-circles and a square
A) A = 3*1/2πr² + a²
A = 3/2*3.14*(10/2)² + 10² = 217.75 m²B)
A = 3/2*22/7*5² + 10² = 217.85 m²C)
217.75*8 = $1742The base of a triangle is 3 and the height is 2 what is the area ?
solve the system using substitution x=-4y y=2x+9
Answer: x=-4
Step-by-step explanation:
Given
x=-4y
y=2x+9
Rephrase equation to find y value in terms of x
y=-x/4
y=2x+9
Use substitution (substitute value of y)
2x+9=-x/4
Multiply -4 on both sides
-4(2x+9)=-4(-x/4)
-8x-36=x
Add 8x on both sides
-8x-36+8x=x+8x
-36=9x
Divide 9 on both sides
-36/9=9x/9
x=-4
Hope this helps!! :)
Please let me know if you have any questions
Question 1: The National Assessment of Educational Progress (NAEP) is administered annually to 4th, 8th, and 12th graders in the United States. On the math assessment, a score above 275 is considered an indication that a student has the skills to balance a checkbook. In a random sample of 500 young men between the ages of 18 and 20, the mean NAEP math score is 272. Do we have evidence to support the claim that young men nationwide have a mean score below 275
This question is incomplete, the complete question is;
Question 1: The National Assessment of Educational Progress (NAEP) is administered annually to 4th, 8th, and 12th graders in the United States. On the math assessment, a score above 275 is considered an indication that a student has the skills to balance a checkbook. In a random sample of 500 young men between the ages of 18 and 20, the mean NAEP math score is 272 with standard deviation of 78.
Do we have evidence to support the claim that young men nationwide have a mean score below 275. The level of significance is 5%
Answer:
p-value ( 0.2 ) > significance level (0.05 )
Fail to reject H₀ at ∝ = 0.05
Therefore, We do not have enough evidence to conclude that the mean score is less than 275 for young men nationwide.
Step-by-step explanation:
Given the data in the question;
Null hypothesis H₀ : μ = 275
Alternative hypothesis Hₐ : μ < 275
mean x' = 272
standard deviation σ = 78
sample size n = 500
Test Statistics
z = (x'-μ) / (σ /√n )
we substitute
z = (272-275) / (78 /√500 )
z = -3 / 3.488266
z = - 0.86
from table;
p-value = 0.19489 ≈ 0.2
Hence; p-value ( 0.2 ) > significance level (0.05 )
Fail to reject H₀ at ∝ = 0.05
Therefore, We do not have enough evidence to conclude that the mean score is less than 275 for young men nationwide.
If the domain of f(n) = -4n - 3 is (-1, 1/4, 4), what is the range?
{-1, 2, -19)
{-7.-4.-13)
{1, -4, -19)
hamster runs in its wheel whose r=3. The wheel completes 9.2 rev/sec.what is the linear velocity
The linear velocity of the hamster is 173.328 m/s.
What is linear velocity?Linear velocity is the rate of change of displacement along a straight line.
To calculate the linear velocity of the hamster, we use the formula below.
Formula:
v = ωr............ Equation 1Where:
v = linear velocityr = radius of the wheelω = Angular velocityFrom the question,
Given:
r = 3 mω = 9.2 rev/sec = (9.2×2π) rad/s = 57.776 rad/sSubstitute these values into equation 1
v = 3(57.776)v = 173.328 m/sHence, The linear velocity of the hamster is 173.328 m/s.
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Answer: 21.7 inches per second
Step-by-step explanation:
Which one is the correct answer..pls HELP a answer accurately..
Answer:
c
Step-by-step explanation:
$0.70 is the answer........
A reading society allows its members to request books, then pick up their books at the library or have them
delivered to their home. Here is the historical data for number of books per year for members who choose each
option.
Answer:
The shape cannot be determined since we don't know the shape of either population distribution.
Step-by-step explanation:
Answer on Khan
yuri completed a race in 0.88 fewer seconds than Josie. Josie's time was 23.95 seconds. How l9ng did it takes Yuri to complete the race?
Ms. Nailor's daughter received $25
babysitting one week. How much does she
need to earn the second week to average
$30?
Group of answer choices
$27.50
$30
$35
$25
Answer:
B
Step-by-step explanation:
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Zack has 13 chains at 5 links each. He wants to combine them into a long chain by cutting and welding the fewest number of links. How many different links must be cut a welded.
Answer:
3
Step-by-step explanation:
There a 5 chains (each with 3 links). We take one chain and cut all three links. Now we are left with only four chains. This requires only 3 joints. Exactly the number of links I have. Therefore, the lowest number of cuts is three.
The number of different links must be cut a welded should be considered as the 3.
Calculation of the number of different links:Since
Zack has 13 chains at 5 links each. He wants to combine them
So here we considered only one chain and then cut off all 3 links
So the remaining should be four chains and it needs only 3 joints.
hence, The number of different links must be cut a welded should be considered as the 3.
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a certain colony of bacteria begin with one cell and the population doubles every 20 minutes. What was the population of The Colony after 2 hours?
a. 6
b. 12
c. 32
d. 64
The population of The Colony after 2 hours is d. 64
How to determine the population?The given parameters are:
Initial, a = 1
Rate, b = 2 every 20 minutes
An exponential function is represented as:
y = ab^x
So, we have:
y = 1 * 2^x
y = 2^x
There are six 20 minutes in 2 hours.
This means that:
x = 6
So, we have:
y = 2^6
Evaluate
y = 64
Hence, the population of The Colony after 2 hours is d. 64
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Identify the sets that contain 2 as an element. (Check all that apply.)Check All That Apply{2, 3, 4, 5, ...}{2, 3, 4, 5, ...}{0, 1, 4, 9, ...}{0, 1, 4, 9, ...}{ 2, {2} }{ 2, {2} }{ {2}, { {2} } }{ {2}, { {2} } }{ {2}, { 2, {2} } }{ {2}, { 2, {2} } }{ { {2} } }{ { {2} } }
Question:
Identify the sets that contain 2 as an element. (Check all that apply.)
[tex]A.\ \{2, 3, 4, 5, ...\}[/tex]
[tex]B.\ \{0, 1, 4, 9, ...\}[/tex]
[tex]C.\ \{2, \{2\} \}[/tex]
[tex]D.\ \{\{2\}, \{\{2\}\}\}[/tex]
[tex]E.\ \{\{2\}, \{2, \{2\}\}\}[/tex]
[tex]F.\ \{\{\{2\}\}\}[/tex]
Answer:
[tex]A.\ \{2, 3, 4, 5, ...\}[/tex]
[tex]C.\ \{2, \{2\} \}[/tex]
Step-by-step explanation:
Required
For which of the options is 2 an element
[tex]A.\ \{2, 3, 4, 5, ...\}[/tex]
The elements of this set starts from 2, then 3 and continues as thus.
Hence: 2 is an element
[tex]B.\ \{0, 1, 4, 9, ...\}[/tex]
From the given elements in the above set, 2 is not listed.
Hence: 2 is not an element of this set
[tex]C.\ \{2, \{2\} \}[/tex]
Here, 2 is listed as an element, 2 is also listed as a subset.
Since 2 is listed as an element, then 2 is an element of the set.
[tex]D.\ \{\{2\}, \{\{2\}\}\}[/tex]
Here, 2 is listed as a subset of {2} and also as a subset of subset of {{2}}.
Since 2 is not listed as an element itself, then 2 is not an element of the set.
[tex]E.\ \{\{2\}, \{2, \{2\}\}\}[/tex]
Here, 2 is listed as a subset of {2} and also as a subset of subset of {2,{2}}. This set only contains subsets, i.e. 2 is not listed as a direct element of the set.
Hence: 2 is not an element of the set
[tex]F.\ \{\{\{2\}\}\}[/tex]
Here, 2 is listed as a subset of subset of {{2}}. This set only contains subsets, i.e. 2 is not listed as a direct element of the set.
Hence: 2 is not an element of the set
Answer:
how
Step-by-step explanation:
Can somebody please help me with this whoever answers first gets a thanks and can you be quick please ❤️
A (-12, 14)
B (8, 8)
C (-12, -4)
D (0, -14)
E (14, 0)
F (0, 0)
Answer:
A (-12,14)
B ( 8,8)
C (-12,-4)
D (0,-14)
E (14,0)
F (0,0)
Step-by-step explanation:
(X,Y)
X coordinates go before Y coordinates in a given coordinate pair hope this helps!
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The height of a cylinder is twice the radius of its base.
What expression represents the volume of the cylinder,
in cubic units?
2x
O4x?
О2лх
O x2 + 2x
O 2 + x
Answer:
I believe it should be C...............
(5^{-8})(5^{-10})=(5
−8
)(5
−10
)=
Answer:
1
3814697265625
Decimal Form:
2.62144 ⋅ 10 / 13
Step-by-step explanation:
please help me
is important
Answer:
1, 2, 3, 1
Step-by-step explanation:
In a line plot, the results are lined up, in order. The number of dots above a number correlates to how many times that result, number was the result.
Just count how many times that number appears. Also see if you can simply ant fractions.
If∠=2−25&∠=95−,find.
Answer:
Alternate interior angles have the same measure. As we know that 'angle 1 ' and 50° are alternate interior angles hence they must be equal. Also we now that sum of all the angles of a triangle is equal to 180°. Hence, m∠2=15°.
Brian invests £4900 into his bank account.
He receives 1.5% per year compound
interest.
How much will Brian have after 4 years?
Give your answer to the nearest penny
where appropriate.
Answer:
5200 pound and 68.139/ 69 penny
If the answer proved helpful to you, Please give it a BRAINLIEST.
Thank you EVERYONE, for EVERYTHING!!
Answer:
it is above
Step-by-step explanation:
ok?
please help me.......................
Answer:
do away withTrue[tex] \infty \infty [/tex]
Find a.
Round to the nearest tenth:
27 cm
1020
280
a
a = [ ? ]cm
Step-by-step explanation:
I got 56.25 my bad if it's wrong tho
how many squre deet of outdoor carpet will we need 11ft 3ft 2ft 3 ft
Answer:
39 sq feet
Step-by-step explanation:
Workout the probability that spinner A lands on 2 and spinner b does not land on b
Spinner diagram isn't attached. A related spinner diagram has been attached below to provide an hypothetical solution to the problem
Answer:
4 / 15
Step-by-step explanation:
For the numbered spinner :
P(landing on 2) = required outcome / Total possible outcomes
Total possible outcomes = (1, 2, 3) = 3
Required outcome = (1) = 1
P(landing on 2) = 1 /3
Lettered spinner :
P(does not land on b)
Total possible outcomes = (A, B, C, D, E)
Required outcome = (a, c, d, e)
P(does not land on b) = 4 / 5
Hence,
P(lands on 2, does not land on b) in this scenario is :
1/3 * 4/5 = 4 / 15