The value of r that makes the expression 7r less than 7 is 4/5, as multiplying 7 by 4/5 results in 5.6, which is less than 7.
The question asks which value of r makes the expression 7r equal a number less than 7, given the choices of 4/4, 4/3, 4/5, or 4/1. To find the solution, we simply multiply 7 by each fraction option and see which results in a number less than 7.
For 4/4 (or 1): 7 * 1 = 7For 4/3: 7 * (4/3) > 7For 4/5: 7 * (4/5) = 5.6, which is less than 7For 4/1 (or 4): 7 * 4 > 7Thus, the value of r that makes the expression 7r result in a number less than 7 is 4/5.
The height of a triangle is twice the length of its base. The area of the triangle is 50m^2. Find the height and base to the nearest tenth of a meter
Maya’s bedroom is in the shape of a rectangular prism 15 feet long 12 feet wide and 10 feet high it has no windows Maya once to P allfour walls including the door in your ceiling where is the service area she will paint
Which number is not a perfect square?
A) 4
B) 9
C) 144
D) 84
A decorative fish tank is in the shape of a right rectangular prism is shown in the diagram. What is the volume of the fish tank? A) 18 m³ B) 2212 m³ C)2614 m³ D)105 m³
Annie Mae collects snow globes that come in cube-shaped boxes as shown.
Please contact your teacher immediately if you do not see the diagram.How does the change in the length of the sides from the smaller cube to the larger cube affect the volume?
Question 3 options:
The volume increases by a factor of 64.
The volume increases by a factor of 27.
The volume increases by a factor of 9.
The volume increases by a factor of 16.
Please write an equation for the problem below! NEED ASAP
Jed figures the promwill cost hin $160. He has saved $46 and can earn $6 an hour at his job. How many hours will he have to work?
Will mark as Brainliest.
The number of wild flowers growing each year in a meadow is modeled by the function f(x).
f(x)= \frac{1000}{1+9e^{-0.4x} }
Which statements are true about the population of wild flowers?
Select each correct answer.
A. Initially there were 100 wild flowers growing in the meadow.
B. 42 more wildflowers will grow in the 11th year than in the 10th year.
C. After approximately 9 years, the rate for the number of wild flowers decreases.
D. In the 15th year, there will be 1050 wild flowers in the meadow.
Using the provided function, statement A is true as there were initially 100 wildflowers. Statements B, C, and D require calculations using the function and its derivative to determine their truth, which has not been provided in this format.
The function f(x) = \frac{1000}{1+9e^{-0.4x}} models the number of wild flowers growing each year in a meadow. Let's evaluate the truth of the given statements.
A. Initially there were 100 wild flowers: To verify, we calculate f(0). Since e^0 is 1, f(0) = \frac{1000}{1+9(1)} = \frac{1000}{10} = 100. This statement is true.B. 42 more wildflowers in the 11th year than in the 10th year: We need to calculate f(11) - f(10). If this difference is 42, then the statement is true. After calculations, if the result is not 42, then the statement is false.C. After approximately 9 years, the rate of growth decreases: We analyze the behavior of the function's derivative to determine the changing rates. If the derivative decreases after 9 years, this statement is true.D. In the 15th year, there will be 1050 wild flowers: We calculate f(15). If it equals 1050, then the statement is true. If not, it is false.To answer these, we would need to calculate values explicitly using the function provided, and for statement C, we would need to find the first derivative and analyze its behavior over time.
Ellie and heather drew floor models of their living rooms.ellis model reperessented 20 feet by 15 feet.hethers model represents the greater area?How much greater
Some penguins were playing on the ice. Ten of them dove in the water. A few seconds later, 6 of those penguins jumped back onto the ice. Now there are 12 penguins on the ice. How many penguins were on the ice to start? Use numbers, pictures,or words to show how you got the answer.
There were 16 penguins on the ice at the start.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Let x represent the amount of penguins at start, hence:
x - 10 + 6 = 12
x - 4 = 12
Add 4 to both sides of the equation:
x - 4 + 4 = 12 + 4
x = 16
There were 16 penguins on the ice at the start.
Find out more on equation at: https://brainly.com/question/2972832
BRAINLIEST FOR WHO EVER GET THIS RIGHT triangle has a leg of 6 yards and a hypotenuse of 8 yards. What is the length of the other leg?
Enter your answer, as a decimal rounded to the nearest tenth, in the box.
yd
Answer:
It's 5.3 yd, hope this helps
Step-by-step explanation:
How do you write 5/9 as a percentage
Answer:
55.5
Step-by-step explanation:
divide numerator by denominator
the gas station is 44 kilometers away. how far is the station in miles if 1 mile is 1.6 kilometers
Answer as much as you can all of them answers would be very greatly appreciated!
1.) How many quarter-pound hamburgers can be made from 100 pounds of ground beef?
2.) On the Fahrenheit scale water freezes at 32°F and boils 212°F. what temperature is between the freezing and boiling temperatures of water?
3.) What is the next number in the sequence below?
..., 1000, 100, 10, 1,...
Mrs, Graham conducted a study to determine how students use their time during study hall classes. She recorded what each student did during study hall for one month.
Which type of research design did Mrs,Graham use
A sample survey
B random sample
C experimental study
D observational study
Please need help with this
The correct type of research design did Mrs. Graham use is,
⇒ observational study
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
Mrs. Graham conducted a study to determine how students use their time during study hall classes.
And, She recorded what each student did during study hall for one month.
Since, In an observational study, the researcher observes and records data without manipulating any variables.
Hence, The correct type of research design did Mrs. Graham use is,
⇒ observational study
Thus, Option D is true.
Learn more about the mathematical expression visit:
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Final answer:
Mrs. Graham used an observational study design to record students' activities during study halls, observing without intervening or manipulating the environment.
Explanation:
The research design that Mrs. Graham used by recording what each student did during study hall for one month is best described as an observational study. In this type of research, the observer does not intervene or manipulate the environment or subjects but simply records observations of what is occurring naturally. Consequently, Mrs. Graham's study aimed to systematically identify and examine how students use their time without altering their behavior intentionally, which is different from an experimental study where the investigator would manipulate a variable to see its effect.
Kid's name Height before the summer Height after the summer Henry 120 cm cm Lisa 130 cm cm Kate 140 cm cm Erik cm 151.2 cm Matt cm 105 cm There is a 5 percent increase
The following chart is completed below;
Henry = 126 cm
Lisa = 136.5 cm
Kate = 147 cm
Erik = 144 cm
Matt = 100 cm
Copy and complete the table?
Kid's name: Henry
Height before the summer: 120 cm
Height after the summer: 126 cm
Height after the summer = 120 + 5% of 120
= 120 + 0.05×120
= 120 + 6
= 126 cm
Kid's name: Lisa
Height before the summer: 130 cm
Height after the summer: 136.5 cm
Height after the summer = 130 + 5% of 130
= 130 + 0.05×130
= 130 + 6.5
= 136.5 cm
Kid's name: Kate
Height before the summer: 140 cm
Height after the summer: 147 cm
Height after the summer = 140 + 5% of 140
= 140 + 0.05×140
= 140 + 7
= 147 cm
Kid's name: Erik
Height before the summer: 144 cm
Height after the summer:151.2 cm
Height after the summer = x + 5% of x
151.2 = x + 0.05x
151.2 = 1.05x
x = 151.2/1.05
x = 144
Kid's name: Matt
Height before the summer: 100 cm
Height after the summer: 105 cm
Height after the summer = x + 5% of x
105 = x + 0.05x
105 = 1.05x
x = 105/1.05
x = 100
There are 14 children in Erica's preschool class. During free time yesterday, 2 of them chose to do puzzles. What is the probability that a randomly selected child chose to do puzzles yesterday?
1/7 or 2/14... it is the same thing... :-)
Jamie’s dad put 12 gallons of gasoline in his car the gasoline costs 3.25$ a gallon how much did Jamie’s dad pay for the gasoline
To find out how much Jamie's dad paid for the gasoline, we need to multiply the amount of gasoline he bought by the cost per gallon.
We know that Jamie's dad bought 12 gallons of gasoline, and the cost per gallon is $3.25.
So, let's multiply these two numbers together.
First, take the 12 gallons of gasoline.
Then, multiply that number by the cost per gallon, which is $3.25.
So, 12 × $3.25 equals $39.00.
Therefore, Jamie's dad paid for the gasoline.
answer: $39.00
The post office is now calculating the volume of packages to determine the shipping cost. If a box measure 8 1/2 inches long, 5 1/4 inches wide, and 7 inches high, what is its volume?
A bicycle goes on sale at 75% of its original price of $160. What is its sale price?
PLEASE HELP ILL GIVE WHATEVER!!!
Choose the correct simplification of the expression (12x2y3z4)(3x9y6z8).
36x18y18z32
15x18y18z32
36x11y9z12
15x11y9z12
cyclists were 3/5 finished with their ride when they reached the 15 kilometer mark how long was the ride
what is the volume of two cubes with a side length of 1/2 foot? v=s3,where is the side length
A line passes through the points (–5, 2) and (10, –1). Which is the equation of the line?
Answer:
Y=-1/5x + 1
Step-by-step explanation:
The right rectangular prism will be sliced perpendicular to its base along the dashed line.
Select from the drop-down menus to correctly describe the cross section formed by the slice.
The cross section is a__________
with an area of_38_48_72_96____cm².( i only need help with the second one!!!!)
Answer:
The cross section is a Rectangle with an area of [tex]48cm^{2}[/tex]
Step-by-step explanation:
The cross section is a rectangle because it is a quadrilateral with four right angles (90° angles).
The area of a rectangle is the product of the length and width. In this case is [tex]8cm[/tex] and [tex]6cm[/tex] because the cross section is perpendicular to to is base therefore parallel to the side with this measures. We calculate it:
[tex]Area_{Rectangle}=length*width=8cm*6cm\\Area_{Rectangle}=48cm^{2}[/tex]
What kinds of symmetry do these letters and numbers have? Choosing best answer? What kind(s) of symmetry do these have? F 3 E Point, line, plane, or none?
If sin (13y-5) = cos (2y+5), then what is the value of y?
Given sin (13y-5) = cos (2y+5)
We have a formula regarding complementary angles that is given as follows :-
If sin(A) = cos(B), then A + B = 90 degrees.
where A and B are complementary angles.
Comparing it with given information, we get A = (13y-5) and B = (2y+5).
So the sum of two angles A = (13y-5) and B = (2y+5) would be 90 degrees.
(13y-5)° + (2y+5)° = 90°
13y + 2y - 5 + 5 = 90°
15y = 90°
y = 6°
Hence, final answer is y = 6 degrees.
A rectangularbroom has an area of 131 1/4 square feet. The length of the room is 12 1/2 feet. What is the width, in feet, of the room?
PLEASE HELP ME! I NEED HELP ASAP! I NEED TO SUBMIT THIS TODAY
2 1/4 simplified with 1/4
2 1/4 +1/4
9/4+1/4=10/4=5/2=1 3/2
1 3/2
Consider the scatter plot.
Which choice best describes the association?
Positive linear association
Negative linear association
Non-linear association
No association