Answers
Answer:
11
Step-by-step explanation:
7x + 2 + 4x = 90
11x + 2 = 90
11x = 88
x = 11
Related Questions
Write a expression to represent the perimeter of the following triangle. 3k+5. 2k+16 4k+15
Answers
Answer:
P = 9k + 36
Step-by-step explanation:
Assuming these are the following sides
3k+5. 2k+16 4k+15
To find the perimeter we add the sides
P = 3k+5+ 2k+16+ 4k+15
Combine like terms
P = 9k + 36
Mark owns a cattle ranch near Hugo, Oklahoma. Mark is currently producing beef at an output level where marginal revenue exceeds marginal cost. In order to
maximize his profit, Mark should
O A. decrease his output.
OB. shut down his ranch.
O c. not change his output.
OD. increase his output.
O E. probably change his output, but more information is needed to determine if he should increase, decrease, or not change it.
Answers
Answer:
Answer is D. Increase his output.
Refer below.
Step-by-step explanation:
Mark owns a cattle ranch near Hugo, Oklahoma. Mark is currently producing beef at an output level where marginal revenue exceeds marginal cost. In order to
maximize his profit, Mark should increase his output.
Mr. Thomas cooked 45 hamburgers and hot dogs at a cookout. He cooked three
fewer than twice as many hot dogs as hamburgers. How many hamburgers and
hot dogs were cooked?
Answers
Answer:
There are 90 hamburgers and 87 hot dogs
Step-by-step explanation:
what is the volume of the prism
Answers
Answer:
the answer is 18
Step-by-step explanation:
what is the value of w
Answers
Answer: 126 degrees
Formula number of sides -2 times 180 = total degrees for polygon
5-2=3x180= 540
Add the 78+132+137+67=414
540-414= 126
Step-by-step explanation:
The diagram below shows scalene triangle JKL. Triangle J K L. Side L K extends to point H to form exterior angle J K H. Which is true about the diagram? Select two options. Measure of angle J K H + measure of angle J K L = 180 degrees Measure of angle J K L + measure of angle J L K + measure of angle K J L = 180 degrees Measure of angle J K H = measure of angle J L K Measure of angle J K L + measure of angle J L K = 90 degrees Measure of angle K J L = measure of angle K L J
Answers
Answer:
Step-by-step explanation:
Measure of angle J K H + measure of angle J K L = 180 degreesTrue.
Measure of angle J K L + measure of angle J L K + measure of angle K J L = 180 degreesTrue. The sum of all interior angles = 180
Measure of angle J K H = measure of angle J L K =Can't tell from info given.
Measure of angle J K L + measure of angle J L K = 90 degreesCan't tell from info given.
Measure of angle K J L = measure of angle K L JCan't tell from info given.
Answer:
A and B or the first two
Step-by-step explanation:
what she saying is true so that means that it is A and B
The garden bed has a width of 1.5 meters and an area of 6 square meters . Which Equation and Solution correctly represent x , the length , in meters , of the rectangular garden bed
Answers
Answer: The answer is 4!
6/1.5= 4
In which step did Cyrus make an error?
7 7 (x - 1)² = 12
(x - 1)2 = 36 Step 1
I-1= 6
Step 2
I=7
Step 3
Answers
Answer:
In step 2 Cyrus make an error.
Step-by-step explanation:
Given : Expression [tex]\frac{1}{3}(x-1)^2=12[/tex]
To find : In which step did Cyrus make an error?
Solution :
Expression [tex]\frac{1}{3}(x-1)^2=12[/tex]
Step 1 - [tex](x-1)^2=36[/tex]
Step 2 - [tex]x-1=6[/tex]
Step 3 - [tex]x=7[/tex]
There is a mistake in step 2,
As we are taking root both side so RHS value is +6 and -6.
So that there are two solutions of the equation.
Correct steps are,
Step 2 - [tex]x-1=6,-6[/tex]
Step 3 - [tex]x=7,-5[/tex]
Therefore, In step 2 Cyrus make an error.
Answer is step 2
Step-by-step explanation:
What is the mean of the values in the stem-and-leaf plot?
Enter your answer in the box.
Key: 2|5 means 25
A stem-and-leaf plot with a stem value of 1 with a leaf value of 2, 3, 5, a stem value of 2 with a leaf value of 8 and 8, a stem value of 3 with a leaf value of 0, and a stem value of 4 with a leaf value of 2.
Answers
Answer:
mean = 24
Step-by-step explanation:
In a stem-and-leaf plot, each leaf represents a number or piece of data.
Each the leaf will only show the last digit of the number, and the stem will have the rest.
Examples:
stem value of 1 with a leaf value of 2 = 12
a stem value of 3 with a leaf value of 0 = 30
So, this is your plot:
Stems| Leaves
1 | 2 3 5
2 | 8 8
3 | 0
4 | 2
Your data is 12, 13, 15, 28, 28, 30, 42.
Add up all these numbers and divide by the number of leaves.
Sum of data = 12 + 13 + 15 + 28 + 28 + 30 + 42 = 168
Number of leaves = 7
168 ÷ 7 = 24
∴ The mean is the values in the stem-and-leaf plot is 24.
Please help me with this one!
Answers
Answer: 184
Step-by-step explanation: i looked
A construction company purchased seven house lots of the following sizes:
1 ⅜ acres, 2 ⅛ acres, l ⅛ acres, l ¾ acres, and 2 ¼ acres. What is the range of these
lot sizes?_
Answers
Answer:
between 1 1/8 acres and 2 1/4 acres
Step-by-step explanation:
What is the domain of this exponential function?
Answers
Answer:
Domain = x E R
Step-by-step explanation:
Since an exponential function has no restriction on the "x" value, its domain can range from anywhere on the plane of "x."
A line passes through the points (1,4) and (3,-4). Which is the equation of the line
Answers
Answer: y=-4x+8
Step-by-step explanation:
Evaluate the geometric series. Please help me out!!!
Answers
Answer:
- 1364
Step-by-step explanation:
The n th term of a geometric series is
[tex]a_{n}[/tex] = a[tex](r)^{n-1}[/tex]
where a is the first term and r the common ratio
4[tex](-2)^{n-1}[/tex] ← is an n th term
with a = 4 and r = - 2
The sum to n terms of a geometric series is
[tex]S_{n}[/tex] = [tex]\frac{a(r^{n}-1) }{r-1}[/tex], thus
[tex]S_{10}[/tex] = [tex]\frac{4((-2)^{10}-1) }{-2-1}[/tex]
= [tex]\frac{4(1024-1)}{-2-1}[/tex]
= [tex]\frac{4(1023)}{-3}[/tex]
= [tex]\frac{4092}{-3}[/tex]
= - 1364
Araceli had 61 pennies and then lost 12. Now she wants to buy a treat that costs 4 sevenths of the pennies she has left. How many pennies does the treat cost?
Answers
The treat would cost 7 cents of your 49
Please help !!!!!
I need it asap
Answers
Answer:
just do your homework
Step-by-step explanation:
Answer:
answer is the page is to blurry for my windows 95 can you make it into a better picture so i can help
Step-by-step explanation:
An angle whose measure is –405° is in standard position. In what quadrant does the terminal side of the angle fall? Quadrant I Quadrant II Quadrant III Quadrant IV
Answers
Answer:
(D)Quadrant IV
Step-by-step explanation:
Given the angle -405
[tex]-405^0=-360^0-45^0\\-45^0=-45^0+360=315^0[/tex]
Angle 315 degrees is in Quadrant IV [tex](270\leq x\leq 360)[/tex], therefore:
Angle -405 degrees is in Quadrant IV.
Answer: its DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
100 points!!!
Multi-Step Equations with Distributive Property
Answers
Answer:
An example below
Step-by-step explanation:
5(4a + 7(a + 2b))
First simply the inside bracket using distributive property:
7(a + 2b)
7(a) + 7(2b)
7a + 14b
5(4a + 7a + 14b)
5(11a + 14b)
Use distributive property again
5(11a) + 5(14b)
55a + 70b
Answer:
x= -2
Step-by-step explanation:
An example could be
10 ( x+2) + 3(x+4) = 6(x+3)
Distribute
10x+20 +3x+12 = 6x+18
Combine like terms
13x +32 = 6x+18
Subtract 6x from each side
13x-6x +32 = 6x-6x+18
7x +32 = 18
Subtract 32 from each side
7x +32-32 = 18-32
7x =-14
Divide by 7
7x/7 = -14/7
x = -2
Adelina started painting at 2:32. She finished before 3:00. Use digital form to write a time she could
have finished painting
She could have finished painting at
Answers
Answer:
2:35
2:47
2:53 etc
Step-by-step explanation:
Since she started or commenced painting at exactly 2:32 and finished painting before 3:00 ,
She could have finished painting 3 minutes later which is 2:35
She could have finished painting 15 minutes later ,which is 2:47
She could have finished painting 21 minutes later which is 2:53 etc
Just make sure you don't write anything that exceeds 3:00 which is about 28 minutes from the time she commenced painting.
Mari needs to rent a storage unit. She needs to determine the volume of the storage unit to decide if the storage unit is big enough to hold her things. If the storage unit is 8 feet high , what is the volume of the storage unit?
Answers
Answer:
D. 176
Step-by-step explanation:
segment the shape into two rectangles
(4 + 2) * (5 - 2) * 8 = 144
(2) * (2) * 8 = 32
144 + 32 = 176
Situation A
Maria opened a new savings
account with an initial deposit of
$100. She deposits $75 into this
savings account every
two-weeks. What equation can
be used to represent Maria's
account balance, a, after she has
completed d deposits?
Answers
The equation a = 100 + 75d represents Maria's account balance.
Step-by-step explanation:
Given that,
Maria opened a new savings account with an initial deposit of $100.She deposits $75 into this savings account every two-weeks.You need to find the equation to represent Maria's account balance, a after she has completed d deposits.
Let 'd' be the number of deposits Maria made after the initial deposit.Let 'a' be the total account balance after 'd' deposits.Therefore, the equation for the total account balance can be framed as the sum of the initial deposit and amount deposited after that.
To find the amount that was deposited after the initial deposit :
⇒ $75 × number of times Maria deposited.
⇒ 75 × d
The equation is written as,
⇒ a = 100 + 75d
Hence the equation a = 100 + 75d represents Maria's account balance.
Alberts sixth grade class will have five test for social studies they already have two of Alberts grades for these two tests are shown below. If Albert wants the mean of his five tests to be 90 what could be his last three grades. Test 1 was an 85 Test two was a 100
Answers
100+85+90+89+88= 452
452/5=90.4
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
Work out the percentage change when a price of £65 is decreased to £39.
Answers
Answer:
40% decrease
Step-by-step explanation:
Say the percent decrease is x%. Then, we can write the equation:
65 - x% * 65 = 39
Notice that 65 is a common factor of both terms on the left, so factor that out:
65 * (1 - x%) = 39
Divide by 65 on both sides:
1 - x% = 0.6
Subtract 0.6 from and add x% to both sides:
x% = 0.4
Remember that % simply means "out of 100", so x% = x/100:
x/100 = 0.4
Multiply by 100:
x = 40
So the percentage decrease is 40%, or the percent increase is -40% (whichever way the question asks).
Hope this helps!
Answer:
p = 40%
Step-by-step explanation:
65 - p%65 = 39
65 - 65p/100 = 39
6500 - 65p = 3900
6500 - 3900 = 65p
65p = 2600
p = 2600 : 65
p = 40%
A model for consumers' response to advertising is given by the equation N(a)=2000+500 ln (a) Where N(a) is the number of units sold, a is the amount spent on advertising, in thousands of dollars, & a≥1.
How many units are sold when $1000 is spent on advertising?
Answers
Answer:
Therefore 2000 units are sold when $1000 is spent on advertising.
Step-by-step explanation:
Given that,
The equation of a model for consumer's response to advertising is
N(a)=2000+500 ln(a)
where a is the amount spent on advertising, in thousand of dollars and a≥1,N(a) is the amount of units sold.
$1000 is spent on advertising.
Since a is in thousand of dollars.
∴a=1
Now plug a=1 in the given model
N(a)=2000+500 ln(1)
⇒N(a)=2000+500×0 [ ∵ln(1)=0 ]
⇒N(a) = 2000
Therefore 2000 units are sold when $1000 is spent on advertising.
Please help me with this I will mark you as brainliest!
Answers
Answer:
21, 42, 63, 84
Step-by-step explanation:
Numbers that have a star and a circle on them are all multiples of 3 and 7. As there are less multiples of 7 between 1-100 we should list the multiples of 7 and then check if they are also multiples of 3.
7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98
A quick way of calculating if a number is a multiple of 3 is to see if its digital root is either 3, 6, or 9
7 is not as 7 is not a multiple of 3
14 is not as 1+4 = 5 is not a multiple of 3
21 is, as 2+1 = 3 is a multiple of 3
28 is not, as 2+8 = 10 is not a multiple of 3
35 not, 3+5=8
42 is, 4+2=6
49 is not, 4+9=13
56 is not , 5+6=11
63 is, 6+3=9
70 is not, 7+0=7
77 is not, 7+7=14, 1+4=5
84 is, 8+4=12, 1+2=3
91 is not, 9+1=10 1+0 = 1
98 is not, 9+8=17, 1+7=8
The seven students in a sewing
class equally share the cost of
fabric and other supplies. Last
month, each student paid ($167.94
+ $21.41) / 7. This month, each
student paid ($77.23 + $ 6.49) / 7.
Without doing any calculations, in
which month did each student pay
more?
Answers
Answer:
Last month
Step-by-step explanation:
Just look at the numbers.
The first number is (167.94 + 21.41) / 7 and the second number is (77.23 + 6.49) / 7. We see that they both have the denominator of 7, so we can just focus on comparing the numerators.
Look at 167.94 + 21.41. Clearly, 167.94 is bigger than 77.23 from the second number. We also see that 21.41 is clearly bigger than 6.49. If both numbers of the first number are bigger than both numbers from the second number, we know that the sum of the first two numbers will be bigger than the second sum.
Thus, the bigger the numerator, the bigger the amount paid, even including the dividing 7 at the end.
Thus, last month, the students had to pay more.
Hope this helps!
Answer:
Last
Step-by-step explanation:
Values being added are greater in last month as compared to this month
Louie is building a scale model of an airplane, using a scale of 2 inches =
25 feet. If the airplane is 155 feet long, what is the length of the model?
Answers
Answer:
The length of the model is 12.4.
Step-by-step explanation:
2in=25ft
x=155ft
155/25=6.2
2*6.2=12.4
1. How much greater is -20x^2+5x+17 than -19x^2+20x+18
Answer: ?^2-15x-1
2. How much greater is -20x^7+10x^6-5x+15 than 13x^7+14x^5-4x^4-11x^2-17
Please help me 30 points. iMathmatics works, but my parents took my phone and its an app and i'm using a computer at the moment...
Answers
Answer:
1. -x²-15x-1
2. -33x⁷+10x⁶-14x⁵+4x⁴+11x²-5x+32
Step-by-step explanation:
-20x^2+5x+17 - (-19x^2+20x+18)
-20x² + 19x² + 5x - 20x + 17 - 18
-x² - 15x - 1
-20x^7+10x^6-5x+15 - (13x^7+14x^5-4x^4-11x^2-17)
-20x⁷ - 13x⁷ + 10x⁶ - 14x⁵ + 4x⁴ + 11x² - 5x + 15 + 17
-33x⁷ + 10x⁶ - 14x⁵ + 4x⁴ + 11x² - 5x + 32
Answer:
1. -x^2 - 15x - 1
2. -33x^7 + 10x^6 - 14x^5 + 4x^4 + 11x^2 - 5x + 32
Step-by-step explanation:
Problem 1.
How much greater is -20x^2 + 5x + 17 than -19x^2 + 20x + 18
Problem 1. Solution:
Subtract the second polynomial from the first polynomial.
-20x^2 + 5x + 17 - (-19x^2 + 20x + 18) =
To simplify the parentheses, think of the negative sign left of the parentheses as the number -1, and distribute it using the distributive property.
= -20x^2 + 5x + 17 -1(-19x^2 + 20x + 18)
We multiply -1 by each term in the parentheses.
= -20x^2 + 5x + 17 + 19x^2 - 20x - 18
Now we combine like terms. First, group each set of like terms together.
= -20x^2 + 19x^2 + 5x - 20x + 17 - 18
Now combine like terms.
= -x^2 - 15x - 1
Answer to Problem 1.: -x^2 - 15x - 1
Problem 2.
How much greater is -20x^7 + 10x^6 - 5x + 15 than 13x^7 + 14x^5 -4x^4 -11x^2 - 17
Problem 2. Solution:
Subtract the second polynomial from the first polynomial.
-20x^7 + 10x^6 - 5x + 15 - (13x^7 + 14x^5 - 4x^4 - 11x^2 - 17) =
To simplify the parentheses, think of the negative sign left of the parentheses as the number -1, and distribute it using the distributive property.
= -20x^7 + 10x^6 - 5x + 15 -1(13x^7 + 14x^5 - 4x^4 - 11x^2 - 17)
We multiply -1 by each term in the parentheses.
= -20x^7 + 10x^6 - 5x + 15 - 13x^7 - 14x^5 + 4x^4 + 11x^2 + 17
Now we combine like terms. First, group each set of like terms together.
= -20x^7 - 13x^7 + 10x^6 - 14x^5 + 4x^4 + 11x^2 - 5x + 15 + 17
Now combine like terms.
= -33x^7 + 10x^6 - 14x^5 + 4x^4 + 11x^2 - 5x + 32
Answer to Problem 2.: -33x^7 + 10x^6 - 14x^5 + 4x^4 + 11x^2 - 5x + 32
How to find the spread in math???
Answers
Answer:
interquartile range
range
variance
These are all different ways to find the spread
The spread in math refers to measures like the range, standard deviation, and variance, which estimate the variability within a dataset. The standard deviation and variance provide insights into the dispersion of data points around the mean, while the range shows the overall spread between the highest and lowest values.
Understanding Measures of Spread in Mathematics
To find the spread in math, we consider several different statistics that measure variability or dispersion within a set of data. There are three common measures of spread:
Range: The difference between the highest and lowest values in a dataset. It gives a quick sense of the overall spread but doesn't account for how data is distributed within that range.Standard Deviation: It quantifies the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean, while a high standard deviation indicates that the values are spread out over a wider range. The standard deviation can be calculated differently for a sample or a population.Variance: The square of the standard deviation. While we often report standard deviation rather than variance, both measure the spread in the same way. Variance is particularly important because it's additive, allowing the comparison of variances from different sets of data.An alternative measure, the Interquartile Range (IQR), measures the spread within the middle 50 percent of data and can be estimated from a box plot. When examining distributions like scores in a class, comparing the observed distribution to a theoretical one such as the normal distribution can reveal insights into the probabilities surrounding different ranges of scores.
To perform these calculations accurately, tools such as graphing calculators, statistical software, and probability tables can be used. These resources help to visualize data (e.g., creating a box plot) and calculate statistical values, offering a clear view of the data's distribution and spread.
I need help with this ASAP
Answers
Answer:
60 degrees
Step-by-step explanation:
These two shapes are similar, which means that their corresponding angles are congruent.
Angle L corresponds to angle X. We know that <L = 60, which means that <X is also equal to 60.
Thus, the answer is 60 degrees.
Hope this helps!
Answer:
60°
Step-by-step explanation:
The two figures are similar and they have the same distribution of angles.
Angle X corresponds to Angle L = 60°