Answer:
4:1
Step-by-step explanation:
[tex]\frac{a-b}{a+b}[/tex] = [tex]\frac{3}{5}[/tex]
4-1 = 3
4+1 = 5
The number of days, d, that it will take to build a house is given by
d= 720 divided by n
where n is the number of workers used each day.
Ali's company will take 40 days to build the house.
Hayley's company will take 30 days to build the house.
Hayley's company will have to use more workers each day than Ali's company.
How many more?
Answer:
6 more workers
Step-by-step explanation:
The relationship between days (d) and number of workers (n) is given by the equation;
d = 720 / n
Ali's company will take 40 days to build the house.
n = 720 / d
n = 720 / 40 = 18 workers
Hayley's company will take 30 days to build the house.
n = 720 / d
n = 720 / 30 = 24 workers
Hayley's company will have to use more workers each day than Ali's company.
How many more?
24 - 18 = 6 more workers
the cost of an airplane flight increases from $250 to $295.
what is the percentage increase?
how math is calculated in our everyday life?
Answer:
We use math when cooking
Step-by-step explanation:
Answer:
We can use our brains, calculators, and in everyday situations such as cooking, paying for items, etc.
Step-by-step explanation:
For example, if you purchase something at a grocery store, there will be change and you have to calculate the correct amount.
a baby goraffe is about 6 1/2 feet tall at birth and grows about 1/2 foot per month for its first year. The function h=1/2m+61/2 represents the total height h of a baby giraffe for any number of months m within ita firat year. How much taller is the giraffe at the end of the month 11 than at the end of month 2
Answer: 4 and 1/2 ft (or 4.5 ft) taller.
Step-by-step explanation:
The function h(m) = (1/2)*m + (6 + 1/2) represents the height (on feet) of the giraffe as a function of the number of months, m.
We want to find the difference in the height between month 11 and month 2, then we need to find:
difference = h(11) - h(2)
We can directly calculate this:
difference = [ (1/2)*11 + (6 + 1/2)] - [(1/2)*2 + (6 + 1/2)]
difference = (1/2)*11 - (1/2)*2 = (1/2)*(11 - 2) = (1/2)*(9) = 9/2
And we can write 9 = 9 + 1, then:
difference = 9/2 = (8 + 1)/2 = 8/2 + 1/2 = 4 + 1/2
And this is in feet, then the girrafe is (4 and 1/2) ft taller on month 11 than on month 2.
In 2071 the monthly salary of the Chief justice of
Nepal was Rs. 53580. If 1 % tax was levied on firs
Rs. 300000 and certain rate on remaining so that the
chief justice paid Rs. 4537 monthly tax. How much
was the tax percentage on remaining? (Ans: 15%)
Answer:
Step-by-step explanation:
There must be an error—or multiple errors—in the question. Rs 300,000 doesn't make sense, because that would mean he was due a tax refund.
Rs 30,000 doesn't work, either, because that would mean he was paying 18% tax, not 15%.
If a 1% tax was levied on the first Rs 25,000, then he would pay Rs 4,287 on on the remaining Rs 28,580, which would work out to 15%.
-4x-2y=-12
solve the system of equations
Mary Chapman had been working at First Savings for 18 years when she
became permanently disabled and could not continue to work. She was 50 years
old and had planned to retire in 12 years. Her final average salary was $34,500.
First Savings' rate of benefits is 2%. What is Chapman's monthly disability
benefit?
Answer:
17250
Step-by-step explanation:
The results of a linear regression are shown below.
y = ax + b
a=-1.15785
b = 139.3171772
r= -0.896557832
r2 = 0.8038159461
Which phrase best describes the relationship
between x and y?
1) strong negative correlation
2) strong positive correlation
3) weak negative correlation
4) weak positive correlation
Answer:
2 hopefully this helps you with work
The best describes the relationship between x and y will be;
⇒ Strong negative correlation.
What is linear expression?A linear expression is an algebraic statement where each term is either a constant or a variable raised to the first power.
Given that;
The results of a linear regression are shown below,
⇒ y = ax + b
⇒ a = -1.15785
⇒ b = 139.3171772
⇒ r = -0.896557832
⇒ r₂ = 0.8038159461
Now,
With the value of r we have both the information about the sign of the relationship and the strength of this relationship.
⇒ As the value of r is negative, we can conclude that the correlation between x and y is negative.
Also, as the absolute value of r is close to 1, we can conclude that this relationship is strong.
And, The strength can also be seen in the value of r2, which is also close to 1, but this value does not give information about the sign.
Thus, The value of the slope a, being negative, can also tell us that the relation between x and y is a negative correlation.
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Mai, Clare, and Tyler are hiking from a parking lot to the summit of a mountain. They pass a sign that gives distances. 3 • Parking lot: 3/4 mile • Summit: 1 1/2 miles Mai says: "We are one third of the way there." Clare says: "We have to go twice as far as we have already gone." Tyler says: “The total hike is three times as long as what we have already gone." a) Can they all be correct?
Answer:
Yes they can
Step-by-step explanation:
.
Tyler's statements are consistent with the given distances.
To determine if Mai, Clare, and Tyler can all be correct, we need to evaluate the statements they made in relation to the given distances.
Statement 1: Mai says, "We are one third of the way there."
The distance from the parking lot to the summit is 1 1/2 miles. If they are one third of the way there, the distance they have already traveled would be 1/3 * 1 1/2 miles = 1/3 * 3/2 miles = 1/2 mile. However, the given distance from the parking lot is 3/4 mile, which is greater than 1/2 mile. Therefore, Mai's statement cannot be correct.
Statement 2: Clare says, "We have to go twice as far as we have already gone."
If they have already gone a distance of x, then according to Clare's statement, they have to go a distance of 2x. This statement does not contradict the given distances, so it could be true.
Statement 3: Tyler says, "The total hike is three times as long as what we have already gone."
If they have already gone a distance of x, then according to Tyler's statement, the total hike would be 3x. This statement also does not contradict the given distances, so it could be true.
Based on the analysis, only Mai's statement cannot be correct. Clare and Tyler's statements are consistent with the given distances.
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if 8 times a number is increased by 3 the result is 19 more than 6 times this number find the number
Answer:
8
Step-by-step explanation:
let x be the number
8*x+3=6*x+19
8x+3=6x+19
rearrange
8x-6x=19-3
2x=16
x=16/2=8
check: 8*8+3=64+3=67
6*8+19=48+19=67
what is the angle of elevation (in degrees) to the nearest degree to the top of a 40ft building 90 ft away
Answer: 24°
Step-by-step explanation:
You have the opposite, the height of the building and the adjacent, the distance from the base of the building. Opposite and adjacent mean you have to use tangent. SOHCAHTOA
Take the inverse tangent on both sides
tan(Ф) = 40/90
Ф = 24°
Dawn is playing a word game. The scores for her first nine words are:
14, 23, 9, 15, 17, 22, 24, 17, 21
Which best describes her scores?
Answer:
The minimum is 9 the maximum is 24 and the range is 9
Step-by-step explanation:
The minimum is 9 and the maximum is 24 and the range is 15
What is the range of a set of observations?The difference between the highest and lowest values in the observation is known as the range of the observation.
Given here: 14, 23, 9, 15, 17, 22, 24, 17, 21
Clearly max. value =24 and min. value=9
∴ Range= 24-9
=15
Hence, The minimum is 9 and the maximum is 24 and the range is 15
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If a rectangular prism has a width of 5, a height of 4, and a length of 9, what is the volume of this prism if it was dilated by a scale 1/2?
Answer:
90
Step-by-step explanation:
5x4x9=180
180x.5=90
hope this is what you were looking for!
x: x is a positive counting number less 25}
Answer:
As the givens set A contains 24 elements.
Therefore,
The Cardinality of the set A = 24
Step-by-step explanation:
Let the given set is A
A = {x: x is a positive counting number less 25}
The set of natural numbers is often termed as the Counting number set.
As the counting numbers are less than 25.Thus,
Set A will be:
[tex]A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24}[/tex]
The Cardinality of the set
The Cardinality of the set represents the total number of elements in a given set.
As the givens set A contains 24 elements.
Therefore,
The Cardinality of the set A = 24
1. Maya had a dozen white eggs
and a dozen brown eggs in her
refrigerator. She used 6 white
eggs and 8 brown eggs to make
breakfast. How many eggs does
she have left?
Answer:
6 white & 4 brown
Step-by-step explanation:
12-6=6
12-8=4
Joel is planning to pack 5 shirts and 2 pairs of pants for a weekend trip. If he has 11 shirts and 6 pairs of pants to choose from,
in how many different ways can this be done.
Answer:
5/11 shirts
2/6 pants
he has 67 different ways i think
(SAT PREP) Find the value of x, NEED ASAP WILL AWARD BRAINLIEST!
Answer:
Step-by-step explanation: add 15, 25 and 39
then subtract by 180
Answer:
101
Step-by-step explanation:
(There is a shorter way to solve this, is in the other answer omg sorry)
First we have to find the last angle of the smallest triangle.
The addition of all angles in a triangle is always 180º so that means:
39 + 25 + y = 180
y = 180 - 64
y = 116
Now that we know the value of that angle we can find the other angle (not x) and with it we can get the answer.
Because flat angles are 180º too
Then:
116 + z = 180
z = 180 - 116 = 64
Finally now we calculate the addition of all angles again to find x:
x + 15 + 64 = 180
x = 180 - 79
x = 101
Hope it was helpful ;)
The population of a small town is growing at a rate of 5% per year. If the population right now is 22 000, What will the population be 10 years from now?
Answer:
35,836
Step-by-step explanation:
I had this question before and I believe this is correct.
Answer:
the population 35,836 in 10 years.
Step-by-step explanation:
The numbers representing the population in consecutive years create a geometrical sequence with:
a1 = 22,000
and
q = 1 + 0.5 = 1.05
We are asked to find the population after
10 years. This number is the eleventh term in the sequence, so we are looking for:
a11 = a1 ⋅ q^10 = 22, 000 ⋅ (1.05)^10
After substitution of given data we have:
a11 ≈ 35, 836
*Answer:* "After 10 years the population will be 35, 836."
Find the value of x and y.
20
X
12
у
X =
y =
Answer:
Step-by-step explanation:
Therefore: The slope is: m=1. The y -intercept is: b=12 or (0,12)
need help like every time :{
Answer:
I need free points but all ik is the -4 needs to be divided by 4 then u have 5g+14=5g/-1
Step-by-step explanation:
Rudy correctly solved the equation 10 = 4r.
Which statement describes his solution?
A
The solution is 40 since 10 times 4 equals 40.
The solution is 2.5 since 4 times 2.5 equals 10.
С
The solution is 2.5 since 4 divided by 2.5 equals 10.
D
There is no solution because no value can be multiplied by 4 to get 10.
Answer:
its B
Step-by-step explanation:
1 2/3 - 3/5 as fraction
Answer:
1 1/15 or 16/15
Step-by-step explanation:
Find the common denominator.
25/15 - 9/15 = 16/15
Have a nice day!!
Hope this helps!!
Can someone solve this please
Which is the measure of
A) 93* B)113* C)138* D)180*
Answer:
A) 93 degrees
Step-by-step explanation:
a is supplementary to 93 degrees so A=180-87=93
Answer:
<A+87=180(linear pair)
<A=180-87=93°
is required value of <A
Someone please help!! asap!!
Answer:
14.308-665544906576543214990
This question is worth 2 points! Allison makes and sells beaded necklaces. She charges a flat fee of $5 per necklace, and $1.50 per bead that she adds. If Jennifer, who wants to purchase a necklace, has $34 to spend, how many beads can she add to her necklace? Explain the process you used to solve, and tell what your answer is.
Answer:
19 beads
Step-by-step explanation:
If Jennifer has 34$ she automatically loses 5$ because that's the fee for the necklace. So, you subtract 34 from 5 and you get 29. After that you divide 29 by 1.50 and you get 19.333333. But, since you can't get 1/3 of a bead Jennifer can only buy 19 beads.
find the sample standard deviation
Answer:
Step 1: Calculate the mean of the data—this is xˉx, with, \bar, on top in the formula.
Step 2: Subtract the mean from each data point. ...
Step 3: Square each deviation to make it positive.
Step 4: Add the squared deviations together.
Step 5: Divide the sum by one less than the number of data points in the sample.
Step-by-step explanation:
I have a question, do you think School is necessary during a pandemic? If so then explain why
Answer:
Step-by-step explanation: Honestly, I don't dislike school. With the rather boring state we're in, school is generally a passtime. But, It depends on your emotional health. Some kids have their parents or relatives getting infected, which takes a toll. And now, teachers barely let us skip for any reason, even if it's more emotional health. So, I would say yes and no.
The scatter plot shows the test scores of a group of students who studied for different amounts of time in a week. A graph shows Hours Spent Studying on x axis and Test Score on y axis .The graph is shown with scale along x axis from 0 to 10 at increments of 1 and scale along y axis from 0 to 100 at increments of 10. The ordered pairs 0, 21 and 0.8, 32 and 1.2,35 and 1.5,39 and 2.1, 42 and 2.3,45 and 2.5,49 and 2.7, 50 and 3, 67 and 4.6, 56 and 5, 69 and 5.3,70 and 5.7,74 and 6.4,78 and 7.2,80 and 7.5,84 and 8.5,88 and 8.7,92 and 9.5,96 are shown on the graph. What will most likely happen to the test scores of students if the number of hours they study increases? Test scores will increase because the graph shows a negative association. Test scores will increase because the graph shows a positive association. Test scores will decrease because the graph shows a positive association. Test scores will decrease because the graph shows a negative association.
Answer:
Test scores will increase because the graph shows a positive association.
Step-by-step explanation:
Since it is going upwards to the right instead of going downwards and for the people who steady more hours they get better scores on there test.
btw i just took it and got it right
From given scatter plot, if the number of hours they study increases then the test scores will increase because the graph shows a positive association.
What is scatter plot?"A type of data representation that shows the relationship between two numerical variables. "
What is positive association?"When the values of one variable tend to increase as the values of the other variable increase, then two variable have positive association."
What is negative association?"When the values of one variable tend to decrease as the values of the other variable increase, then two variable have negative association."
For given question,
The scatter plot shows the test scores of a group of students who studied for different amounts of time in a week.
A scatter plot shows Hours Spent Studying on x axis and Test Score on y axis .
Also we have been given the ordered pairs
(0, 21), (0.8, 32), (1.2, 35), (1.5, 39), (2.1, 42), (2.3, 45) and (2.5, 49) and (2.7, 50) and (3, 67) and (4.6, 56) and (5, 69) and (5.3, 70) and (5.7, 74) and (6.4, 78) and (7.2, 80) and (7.5, 84) and (8.5, 88) and (8.7, 92) and (9.5, 96)
From the given data points of scatter plot,
as x - value increases, y - value also increases.
This means, if the number of hours they study increases, the test scores will increase.
Here, the values of one variable tend to increase as the values of the other variable increase.
This means, there is positive association in variables Hours Spent Studying and Test Scores.
Therefore, from given scatter plot, if the number of hours they study increases then the test scores will increase because the graph shows a positive association.
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(SAT PREP) FIND THE VALUE OF X PLEASE ASAP AWARDING BRAINLIEST!!
Answer:
116
Step-by-step explanation:
x=180-(25+39+15)=116degrees
Answer:
116 is the correct answer to this question