Charles is eight years older than five times Mark's age. If Charles is 63 years old, how old is Mark?
Answer:
21
Step-by-step explanation:
Answer: 11
Step-by-step explanation:
11x 5 is 55. 55 plus 8 is 63
4x + 10= 22 find the value of x
Answer:
x=3
Step-by-step explanation:
An earlier study determined that 60% of women older than age 50 have annual mammograms. To see if this proportion is still valid, we send surveys to 1000 women older than age 50. Of the 100 who respond, 70 say they have annual mammograms. What is the (estimated) current proportion of women older than age 50 who say they get annual mammograms
Answer:
The % of women above 50 having mammograms as devised from the survey is 70%.
Step-by-step explanation:
Given
60% of women older than age 50 have annual mammograms
Out of 1000 surveyed women of age greater than 50, 100 women responded and out of these 100, 70 confirmed that they have annual mammograms
The % of women above 50 having mammograms as devised from the survey is 70%.
which of the following could be the graph of the line y=3x-2?
Answer:
D should be the right answer
Answer:
C. IS THE CORRECT ANSWER
Step-by-step explanation:
A survey of Mrs. Ramirez's students showed that 30
students will have pizza fonlunch, 17 will have macaroni
and cheese, 12 will have a hamburger, and 5 will have
chicken fingers. Suppose Mrs. Ramirez surveys all 1 200
students in the school. How many students can she
expect to choose hamburgers for
Hunch?
Answer: 480
Step-by-step explanation:
We can create a ratio for this!
We have:
[tex]\frac{number of hamburgers}{total students}[/tex]= [tex]\frac{new number of hamburgers}{new number of students}[/tex]
We can use substitution to input the information we already know:
[tex]\frac{12}{30}[/tex] = [tex]\frac{x}{1200}[/tex]
Using cross multiplication, we get:
1 200(12) = 30x
14,400 = 30x
[tex]\frac{14,400}{30}[/tex]=[tex]\frac{30x}{30}[/tex]
x = 480
Hope this helps! :)
The number of students expect to have hamburgers for lunch is 225 students.
What is a word problem?
A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.
For the given situation,
Mrs. Ramirez's survey on students
Number of students have pizza = 30
Number of students have macaroni and cheese = 17
Number of students have a hamburger = 12
Number of students have chicken fingers = 5
Total number of students = 64.
Now, Mrs. Ramirez surveys all 1 200 students.
Then number of students expect to choose hamburgers for lunch can be found by,
[tex]\frac{Number of students have hamburgers}{Total number of students} = \frac{Number of students expect to have hamburgers}{ Total number of students}[/tex]
Let x be the number of students expect to have hamburgers.
⇒ [tex]\frac{12}{64}=\frac{x}{1200}[/tex]
⇒ [tex]x=\frac{(12)(1200)}{64}[/tex]
⇒ [tex]x=225[/tex]
Hence we can conclude that the number of students expect to have hamburgers for lunch is 225 students.
Learn more about word problems here
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Greg buys 21 bags of nails. Each bag has 85 nails in it. Greg rounds both numbers to the nearest ten to find an estimate of the total number of nails. What is the difference between Greg's estimate of the total number of nails and the actual total number of nails?
Answer:
1800
Step-by-step explanation:
21 rounds to 20
85 rounds to 90
20*90=1800
21*85=1785
1800-1785=15 nail difference
A regression would be appropriate for which of the following types of data settings A. Estimate the amount hot dogs sales for the Superbowl game in Saint's stadium based on a sample of the hot dog stands. B. Estimate the increase in lung cancer for smokers vs. non-smokers C. Predicts someone's blood alcohol level from the number of whiskey drinks they consumed D. All of the above
Answer:
C. Predicts someone's blood alcohol level from the number of whiskey drinks they consumed.
Step-by-step explanation:
In Statistics, classification problems are differentiated from estimation problems because classification problems typically requires that the output attribute be categorical while estimation problems require that the output attribute is numerical. In an estimation problem, the output variable has a continuous or real value, such as predicting the size, area, weight, age or even the cost of an item.
A Classification problem work with the concept of creating a succinct model such as decision trees, Naive Bayes, random forest, logistic regression, etc, which is capable of predicting from the attribute (observed) variables given; values of the dependent attribute, which is always categorical.
In order to predict a dichotomous variable from a given data set comprising of continuous or dichotomous variables, a logistic regression can be used.
Mathematically, it is given by the expression;
Logistic regression [tex] y [/tex] with [tex] x_{1} [/tex], [tex] x_{2} [/tex]........[tex] x_{n} [/tex]
Where;
y represents the dichotomous dependent variable.
[tex] x_{1} [/tex], [tex] x_{2} [/tex]........[tex] x_{n} [/tex] represents the predictable variables, which are categorical in nature such as alive or dead, win or lose, sick or healthy, pass or fail, etc.
Hence, a regression would be appropriate for predicting someone's blood alcohol level from the number of whiskey drinks they consumed.
The radius of a circle is 7 in find its area to the nearest tenth
Answer:
why there is no problem i do not see it
Step-by-step explanation:
Find all missing side lengths
Answer:
Sin 60=y/46
y=39.8
-39.8^2+46^2=x^2
X=23
So y=39.8 and x=23
Simplify the expression 2 • (3 + 5 − 1) • 2
Cheng likes a modern lawn sculpture made of four identical solid right pyramids with square bases. He decides to create an exact copy of the sculpture, so he needs to know what volume of sculpting material to purchase. 2 identical solid right pyramids with square bases are connected at the square base. Another 2 are connected in the same way and are stacked on top of the other 2 pyramids. The length of the base edge is 2 feet and the height of the whole structure is 6 feet. He measures each edge of each base to be 2 feet. The height of the whole sculpture is 6 feet. What is the volume of material he must purchase? 2 ft3 4 ft3 6 ft3 8 ft3
Im Very sorry for the bots (I hate when they do this) BUT the answer is 8ft 3 Hope it helps!!
To create an exact copy of the sculpture, the volume of material they must purchase is [tex]8\,\text{f}{{\text{t}}^{3}}[/tex].
What is the volume of a cuboid?The volume of a cuboid is calculated by multiplying its length, width, and height.
The length and width of the triangle are identical since the base is a square.
[tex]L = W = 2\,{\text{ft, and }}H = 6\,{\text{ft}}[/tex]
Knows the volume of material he must purchase,
[tex]\text{Volume}=\frac{\text{Height}\times \text{length}\times \text{width}}{3}[/tex]
So,
[tex]\Rightarrow \text{Volume}&=\frac{2\times 2\times 6}{3} \\\Rightarrow \text{Volume}&=2\times 2\times 2\,\text{f}{{\text{t}}^{3}} \\ \Rightarrow \text{Volume}&=8\,\text{f}{{\text{t}}^{3}} \\[/tex]
Therefore, the volume of material they must purchase is [tex]8\,\text{f}{{\text{t}}^{3}}[/tex].
Learn more about the volume of cuboids, here:
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Find the surface area of the prism
Answer:
192 km²
Step-by-step explanation:
Surface Area of the triangular prism = 2(Base Area) + Perimeter of Base*height of the prism
✔️Base Area = ½*bh
b = 6 km
h = 8 km
Base area = ½*6*8 = 24 km²
✔️Perimeter of base = 6 + 8 + 10 = 24 km
✔️Height of prism = 6 km
Plug in the values into the equation:
Surface area = 2(24) + 24*6 = 48 + 144
Surface area = 192 km²
help please, asap. i need this done
Answer:
2
Step-by-step explanation:
15/3=5
25/5 = 5
10/2 = 5
Answer:
2
Step-by-step explanation:
You have to find the "pattern."
for 15 and 3, you have to divide 15 by 5 and thats 3.
for 25 and 5, 25/5 is 5, so 10/5 is 2.
I APRECIATE HELP. A regression line was calculated for three similar data sets (A, B, and C) that measure the height of a plant (in inches) over time (in days). The residual plots for each set are shown. Based on the residuals, which data set is best fit by the regression line?
The data set that is best fitted by the regression line is; Data Set B
What are regression residuals?Residuals are described as the distance of each point from the regression line. Thus, the farther each point is from the line, the worse the fit and the closer each point is to the line, the better the fit.
Graph C has points that are not tightly centered around a line. This is not a good fit.
Graph A has a straight line; it is not a good fit.
Graph B, shows us that all of the points are tightly centered around a line; this is a good fit.
Read more about Regression Residuals at; https://brainly.com/question/17844286
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find the surface area of the nearest whole number
Answer:
46
Step-by-step explanation:
Hope it Helps
Brainliest please
What is the probability that a randomly selected date in the year 2021 is not in the month of October or
November?
Type your answer into the box as a decimal. Round to the nearest thousandth.
Answer:
0.833
Step-by-step explanation:
There are 365 days in 2021
There are 31 days in October
There are 30 days in November
(365-61)/365 = 0.833
A plane is traveling at a constant rate described by d = 525t where d is the distance and t is the time. What is the constant of proportionality?
Answer:
50 points
Step-by-step explanation:
Answer:
525 is the constant of proportionality
Step-by-step explanation:
Which angles are adjacent to each other?
Answer:
1st option maybe?
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Adjacent angles are two angles that have a common vertex and a common side but do not overlap.They share the same vertex and the same common side.
Which equation below is decreasing across all real numbers ?
A. y=2(1/4)^x
B. y=1/3(5)^x
C. y=3x-5
D. y=3(5)^x
Answer:
A
Step-by-step explanation:
All the other exponential equations have a base greater than 1 except A and c is a linear equation with positive slope
HELP URGENT PLEASSSSSSSSSSSSSSEEEEEEEEEEEEEEEE
Answer:
1 4/5 pounds each
Step-by-step explanation:
9/5 = 1 4/5
Solve the following system of equations: (2 points) −2x + y = 1 −4x + y = −1
Answer:
(x,y)=(1/2,0)
Step-by-step explanation:
rewrite the expression
-2x+y=-1
1-4x+y=-1
1. What is the volume of the triangular prism below? h = 6.7 m 2 VBA 12.4 m 8 m
Answer:Remember the formula for calculating volume is: Volume = Area by height. V = A X h.
For a triangle the area is calculated using the formula: Area = half of base by altitude. A = 0.5 X b X a.
So to calculate the volume of a triangular prism, the formula is: V = 0.5 X b X a X h.
What fractions Equivalent to 1/2
Answer:
2/4 3/6
Step-by-step explanation:
any fraction where the numerator is half of the Denominator
Enter the phrase as an algebraic expression.
the product of 38 and g
Answer:
38g
Step-by-step explanation:
Product means multiplication so:
The product of 38 and g is 38g
im almost done with this hw. plz help!!! give explanation if you actually know the answer so ik u dont just want points
Answer:
he would have a 2/5 chance because he misses or hit three so he would either miss two or hit two according to the chart
Step-by-step explanation:
sry if I'm wrong but it would be one of the most valid answers
Answer:
3/10
Step-by-step explanation:
#2, 7 and 8 are the valid 3 goal trials out of 10
help please. i need it asap
Answer:
The answer 3
Step-by-step explanation:
What is the answer ?
Determine what type of solution the following equation has: 2x-7=2x+3
- No solution
- One solution
-Infinitely Many solution
A sports store received a shipment of 150 footballs and basketballs. 20% were basketballs. How many footballs were in the shipment?
Answer:
10 is the answer
Step-by-step explanation:
Answer:
120
Step-by-step explanation:
120 because 20% of the 150 balls is 30 or right so forth the football is a subtract the 150 from the 30 which gives you 120
A home value increases at a rate of 2.3% per year. If you purchased a home for 192,300, what would be the value of the home in 10 years? Round to the nearest cent.
9514 1404 393
Answer:
$241,399.09
Step-by-step explanation:
The value is increasing exponentially with a growth factor of 1.023, so it will be ...
v(t) = 192,300×1.023^t
v(10) = 192,300×1.023^10 ≈ 241,399.09
The value is predicted to be $241,399.09 in 10 years.