y varies directly as x if y is 2 when x is 8 then the constant of variation is 1/4
a.true
b.false
Answer:
a. True.
Step-by-step explanation:
y = kx
y = 2 when x = 8 gives:
2 = 8 * k
k = 2/8 = 1/4.
Help me please im stuck
Answer:
28.26
Step-by-step explanation:
A=3.14 r^2
3.14x3x3
3.14x9
28.26
Hope this helps! :)
(Please don't hate on me if its wrong)
Roger decides to buy a new printer. He wants a printer which prints the most pages per minute (ppm). Printer A can print up to
33
pages per minute, which can be modeled with the equation
p
=
33
m
where
p
represents the number of pages and
m
represents the number of minutes passed. The rate at which the second printer functions is shown in the table.
Which printer should Roger choose, and how many more pages a minute will he be able to print?
Printer A;
5
more pages per minute
Printer A; 5 more pages per minute
Printer B;
2
more pages per minute
Printer B; 2 more pages per minute
Printer B;
5
more pages per minute
Printer B; 5 more pages per minute
It does not matter; both printers print at the same rate.
It does not matter; both printers print at the same rate.
Answer:
That's alot of words its kinda hard to understand
A chocolate company makes dark chocolate bars. The quality control department of the company has found that the weights of the chocolate bars follow a normal distribution, with a mean of 85 grams and standard deviation of 1.2 grams. To ensure a consistent product, the company has a policy to reject any chocolate bars weighing less than 82.6 grams or more than 87.4 grams. Approximately what percent of chocolate bars are rejected?
a. 0.12%
b. 0.15%
c. 0.30%
d. 2.50%
e. 5.00%
Need help. Find the value of x
Answer:
Step-by-step explanation:
14
I need help on the second problem!!!
me pueden ayudar por favor si no saben no respondan (:
Answer:
Step-by-step explanation:
PLEASE HELP I WILL GIVE YOU BRAINLIEST
Answer
32
Step-by-step explanation:
fffff
Are the expressions equivalent? Select all that apply.
A:3n + 2 - 4n and 2 - n
B:5(3x + 2) and 15x + 10
C:2(r×r×r) and 6r
D:-8(2z – 3) and -16z - 3
A line of best fit for a data set has equation y = 3x - 4. What y-value would you predict for an x-value of 8 in this data set?
A 4
B. 8
C. 16
D. 20
Answer:
D. 20
Step-by-step explanation:
The line of best fit for the equation is:
[tex]y = 3x - 4[/tex]
When x = 8
We have to find y. So
[tex]y = 3*8 - 4 = 24 - 4 = 20[/tex]
So the correct answer is given by option D.
Please help I have been stuck for a while now
Answer:
D
Step-by-step explanation:
The line-of best fit is where a line would be drawn if there was one. The line goes through the majority of the dots and doesn't touch the outliers. Also the line is strait.
the square below is being reduced by a scale factor of one-third. what is the perimeter of the new drawing
Answer:
one side = 3cm
Step-by-step explanation:
S.f=1/3
1 side=9÷3 = 3
factor the expression using gcf 98-70
Answer:
The Greatest Common Factor (GCF) for 70 and 98, notation CGF(70,98), is 14.
Step-by-step explanation:
Here are some of the lowest tempatures recorded in the last 2 centuries for some US cities. Tempatures are in degrees Farhrenheit. Which of these states has the lowest record tempature?
-Death valley, CA -45 in January of 1937
-Danbury,CT was -37 in Febuary of 1943
-Monticello, FL was -2 in Febuary of 1899
- East saint Louis,IL was -36 in January of 1999
- Greenvillie, GA was -17 in january of 1940
Answer:
wouldn't it be A?
Step-by-step explanation:
After eating dinner at a restaurant, Alex's bill before tax is $78.00. The sales tax rate is 8%. Alex decides to leave a 20% tip for the waiter based on the pre-tax amount. How much money will Alex pay total, including tax and the tip?
Alex's will pay a total of $99.86
Step-by-step explanation:
Tax Rate:
$78.00+8%
8% of $78.00=6.24
78.00+6.24=84.24
Tip:
20% of 78.00=15.6
Total:
(Bill+Tax) 84.24+(Tip)15.6=$99.86
Which of the following expressions is this one equivalent to?
(x4 – 2x3 – x+2) / (x3 - 1)
A. X-2
O B. x2-1
O c. x2+x+1
O D. x2 + 3x + 2
Answer:
option A
Step-by-step explanation:
(X - 2) is the answer
hope it helps
A______is a data point that lies away from most of the other data points.
-cluster
-outlier
-trend line
-variable
circle P is representing by the equation (x - 2)^2 + (y + 2)^2 = 9.
plot point P on the given coordinate plane.
Answer:
Solution given.(x - 2)^2 + (y + 2)^2 = 9.
comparing above equation with (x-h)²+(y-k)²=r²
we get
centre(x,y)=(2,-2)
radius [r]=3units
HELP CAN SOMEONE HELP ME MATH I'LL GIVE BRAINLIEST
Answer:
Student C wrote the correct inequality
the inequality will be less than or equal to since we want to spend (exactly) 300 or less. We only buy one jacket for 60 dollars so it will be added seperately to the total number of jackets. We are buying multiple jackets and each jacket costs $40. P = # of pants. So the inequality will look like
60 + 40P (less than or equal to symbol) 300
Hope I'm not too late :)
Jesse went out for a 4-course meal were he had a choice of 3 salads, 3 appetizers, 4 entrees, and 5 desserts. How many different four-course meals are possible?
Answer:
180 different four-course meals
Step-by-step explanation:
So you have one out of 3 salads, one out of 3 appetizers, one out of 4 entrees, and one out of 5 deserts. To find the number of meals that are possible, multiply 3 by 3 by 4 by 5
3 * 3 = 9
9 * 4 = 36
36 * 5 = 180
please help with these problems!! It’s getting really late and they’re due !!
Answer:
b = 9 inches
Step-by-step explanation:
Given that,
The area of triangle LMN = 36 inch²
The height of the triangle, h = 8 inches
We need to find the base of the triangle. The formula for the area of a triangle is given by :
[tex]A=\dfrac{1}{2}bh\\\\b=\dfrac{2A}{h}\\\\b=\dfrac{2\times 36}{8}\\\\b=9\ inches[/tex]
So, the base of the triangle is equal to 9 inches.
Susan wants to collect data about the exercise habits of her friends.
Which questions are statistical questions she could ask?
Select each correct answer.
What time of the day are my friends most likely to exercise?
How many days each week does Melanie exercise?
What types of exercise do my friends prefer?
Does Heather like to do different exercises?
How many times a week do my friends exercise?
Answer: I hope this helps you.
Use the distributive property to expand (simplify): 5(12mu - 7v)
Answer:
60mu - 35vStep-by-step explanation:
You disturbute 5 into the 12 and add mu and your answer and distribute 5 into the 7 and keep the v with your answer.Hopes this works.[tex]\textsf{Hi Brainy User, I'm Here to Help you!}[/tex]
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[tex]\textsf{The \textbf{distributive property} states the following:}[/tex]
[tex].\qquad\bullet\sf{a(b+c)=ab+ac}[/tex]
[tex]\textsf{So we take a number or a variable \textbf{a} and distribute it by multiplying it times b and c}[/tex]
[tex]\textsf{Now we simplify.}[/tex]
[tex]\textsf{5(12mu-7v)=5*12mu-5*7v=60mu-35v}[/tex]
[tex]\Large\textsf{\textbf{Answer: 60mu-35v}}[/tex]
[tex]\Large\overbrace{\underbrace{\boldsymbol{Reflection - RoSe}}}^\star_\star[/tex]
A rectangular prism has a width of 8inches a length of 15inches and a height of 6inches what is the volume ofprism
Answer: 720 inches
Step-by-step explanation:
To find volume of a rectangular prism, we need to multiply L x W x H , so we would do-
15 x 8 x 6 and get 720in
Answer: Fre.e points :^
Step-by-step explanation: Ty *bows* u-u
can someone help me with this math problem pls? will give thanks!
Answer:
sin(A) = opp / hyp
=a/hyp. =9/15
cos(A) = adj/hyp
=b/hyp. =12/15
Tan(A) = sin(A) / cos(A)
= 9/15 / 12/15
=9/12. (you can further simplify it)
same for the B angle,
sin(B) = b/15
=12/15
cos(B) = a/15
=9/15
tan(B) = sin(B) / cos(B)
= 12/15 / 9/15
=12/9
Find the area of a parallelogram. If base = 24 cm; height= 15 cm
Find the area of a rectangle. If length = 12 cm; height= 3 cm.
Find the area of a rectangle. If length = 25 cm; height= 4 cm.
Find the area of a square. If one side measures 16 cm. *
6. Find the area of a square. If one side measures 100 cm. *
7. Find the area of a triangle. If base is 24 cm; height = 3. *
8. Find the area of a circle. If the diameter is 10 cm . *
9. Find the area of a circle. If the radius is 7 cm . *
10 . Find the area of a semicircle. If the radius is 4 cm . *
Answer:
1. 360 , 2.36, 3.100, 4.256, 5.10000 , 6.72,
Find the approximate perimeter of the trapezoid? PLSSS HELPPP
Answer:
49
Step-by-step explanation:
side 1 = |18-3|= 15
side 2 = |12-3| = 9
side 3 = |16-4| = 12
side 4: [tex]\sqrt{(18-12)^2 + (4-16)^2} \\ \sqrt{36+144} \\ = \sqrt{180} \\ = 13,4[/tex]
perimeter = 15 + 9 + 12 + 13,4= 49,4 = 49
please help !! urgent ! :(
Answer:
a = 15
Step-by-step explanation:
The formula to solve for the above diagram is given as:
Sum of the interior angles in a circle = 360°
(10a - 4)° + (6a - 2)° + (8a + 6)° = 360°
10a - 4 + 6a - 2 + 8a + 6 = 360
24a -6 + 6 = 360°
24a = 360
a = 360/24
a = 15
A. Zara is learning about surface area and volume in math class. She begins to notice that she can apply this geometry in everyday life. When her mom makes a jelly sandwich for her lunch, Zara notices it is similar to a rectangular prism and decides to measure its dimensions. She measures the length as 13 cm, the width as 10.8 cm, and the height as 3 cm, as shown below. What is the volume of Zara's sandwich? Show your work.
B. What is the surface area of Zara's sandwich? Show your work.
C. Zara cuts her sandwich in half down the middle, dividing it into two equal pieces. She then stacks one half of the sandwich on top of the other, as shown below.
Mike is 6.2 feet tall and casts a shadow that is 10.7 feet long. At the same time, a tree casts a shadow that is 37.5 feet long. How tall is the tree to the nearest tenth of a foot?
Answer:
I think it's 38