Answer:
C
Step-by-step explanation:
0.2(7x + 18) ← multiply each term in the parenthesis by 0.2
= 1.4x + 3.6 → C
Once simplified, which of the expressions below is equal to −3x−39? Select all that apply.
A) 6(2x–5)–15x–9
B) −3(x+13)
C) 6(23x–5)−7x–9
D) 3x(x–3)
Using the information found in Part A, which class could Mrs. Smith report had the more consistent performance on the unit test? Explain what this means in terms of the situation.
Which questions are statistical questions?
Answer:
whats the number of the class.
what's my height
how many students from each school in this city loves football
what is the height of each student inmy class
how many servings of fruit did I eat each day thus month
:((((((((((((((((((((((((((((((((((((((((((((((
Answer:
Step-by-step explanation:
A sixth grade class recorded the number of letters in each students first name. The results are shown in the dot plot. Which is the best representation of the center of this data set?
Answer:
the center of the data set is 7 so probably 7
7 is the best representation of the center of given data set.
The correct answer is an option (C).
What is center of data?"It is the middle of a distribution.""Mostly, The measures of the center of the data are the mean and the median."What is mean?"It is the average of the given numbers."
What is median?"I is the middle value of a sorted list of numbers."
For given question,
We have been given a dot plot of the number of letters in each students first name.
From the given dot plot,
We have data as 3, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6,6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 9, 10, 10, 11, 11, 11
From above data,
the total number of students in the class are n = 30
We write 3, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6,6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 9, 10, 10, 11, 11, 11 as 3, (4 × 2), (5 × 4), (6 × 7), (7 × 7), (8 × 3), 9, (10 × 2), (11 × 3)
So, the mean of the above data would be,
[tex]\Rightarrow \bar{X}=\frac{3+ (4\times 2)+(5\times 4)+(6\times 7)+(7\times 7)+(8\times 3)+9+(10\times 2)+(11\times 3)}{30}\\\\\Rightarrow \bar{X}=\frac{208}{30}\\\\\Rightarrow \bar{X}=6.93\\\\\Rightarrow \bar{X}\approx 7[/tex]
From above data we can observe that there are two numbers in middle of the data 6 and 7.
So, the median would be,
[tex]\Rightarrow M=\frac{6+7}{2}\\\\\Rightarrow M=6.5\\\\\Rightarrow M\approx 7[/tex]
Therefore, 7 is the best representation of the center of given data set.
The correct answer is an option (C).
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Are the two triangles similar? Explain your answer.
Answer:
No
Step-by-step explanation:
Two triangles are similar if their corresponding angles are congruent and the corresponding sides are in proportion They are the same shape, but not necessarily the same size
Triangle ABC 54 +68 + 58 = 180
Triangle EFG 68 +63 +49 = 180
In this case their corresponding angles are nor congruent
Given an investment of $2,000
What would be the balance after 5 years compounded daily with an interest rate of 3.4%
O $237.06
O $2370.59
O $1185.30
0 $2367.22
Answer:
$2370.59
Step-by-step explanation:
the final balance is $2370.59
Find the area of the shaded region in the drawing round to the nearest tenth show all work
Answer:
The area of the shaded region is:
488 ft^2.Step-by-step explanation:
First, we're gonna find the area of the whole rectangle and next we can subtract the area of the triangles in the corners, we use the next formula:
Area of a rectangle = width * heigthAnd we replace the measurements in the picture (32 ft and 16 ft):
Area of a rectangle = 16 ft * 32 ftArea of a rectangle = 512 ft^2Now, we must calculate the area of a triangle, this can be made by this formula:
Area of a triangle = (base * height) / 2We can replace the values we have in the picture (4 ft and 6 ft), then:
Area of a triangle = (4 ft * 6 ft) / 2Area of a triangle = (24 ft^2)/ 2Area of a triangle = 12 ft^2As you can see in the picture, we have to subtract two triangles with the same measurements, by this reason, we multiply the area of the triangle by two and we'll obtain the area we must subtract:
Area to subtract = (12 ft^2) * 2Area to subtract = 24 ft^2At last, we take the area of the whole rectangle and subtract the area of the triangles:
Area of the shaded region = 512 ft^2 - 24 ft^2Area of the shaded region = 488 ft^2The area of the shaded region is 488 ft^2.
What is the slope of a line parallel to the line whose equation is 2x +y= -7. Fully
simplify your answer.
Can someone please help with these three?
Answer:
8
Step-by-step explanation:
ok so this is just the first one but i think you use a variable for what you are trying to find out, and well call this x and then u subtract the variable from the product of the rate and the amount, and once you have it, you multiply it but its own conjugate so then u use the binomial that you get to create a function, and you can graph it if you want, and u can use the apothem (the formula involves cos, so you might need a calculator) of the polygon created on your graph to find the domain, which you will then get the 4th root of, which is your answer. anyway, i believe this is what it is, but i may be wrong. hope this helps!
One solution to a quadratic function, g, is given 9-square root 2i which statement is true
Answer:
the answer is : D I got it right
Option (D) the other solution to the function g is 9 + √2i option (D) is correct.
What is a quadratic function?Any function of the form [tex]\rm f(x) =ax^2+bx+c[/tex] where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic function.
We have:
One solution to a quadratic function, g, is:
9 - √2i
As we know complex solutions are always in the pair.
So the other solution will be 9 + √2i
Thus, option (D) the other solution to the function g is 9 + √2i option (D) is correct.
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The Unit Circle
What is the period for the graph of y = cos(∅)? (Sketch a graph to help determine the answer)
a. 180°
b. 90°
c. 360°
d. 270°
Please select the best answer from the choices provided
Answer:
C. 360°
Step-by-step explanation:
I calculated it logically
Answer:
Answer is C) 360°
Step-by-step explanation:
For this data set, the value of the range is about____
the value of the interquartile range.
On average, the data points lie between__and___points from the mean.
Answer: ........is about 5
lie between 8 and 16
Step-by-step explanation:
Answer:
1. twice
2. 2 and 3
im cool
Step-by-step explanation:
The weight of oranges growing in an orchard is normally distributed with a mean weight of 7 oz. and a standard deviation of 1.5 oz. Using the empirical rule, determine what interval would represent weights of the middle 99.7% of all oranges from this orchard.
please help
Answer:
2 to 11 ounces would be the interval.
Step-by-step explanation:
Add 3 standard deviations above and below the mean to get the range in which 99.7% of the data in a normal distribution will fall
6.5 + 4.5 = 11
6.5 - 4.5 = 2.
Hope this helped!
The interval that would represent the weights of the middle [tex]99.7\%[/tex] of all oranges from this orchard is between [tex]2.5[/tex] and [tex]11.5[/tex] such that weight and standard deviation are [tex]7\;\text{oz.}[/tex] and [tex]1.5\;\text{oz.}[/tex] respectively.
Empirical RuleThe empirical rule formula states that [tex]68\%,95\%[/tex] and [tex]99.7\%[/tex] of all the data can be represented in the interval of [tex]1, 2[/tex] and [tex]3[/tex] standard deviation of the mean respectively.
How to use the empirical rule formula to determine the interval?Mean weight [tex]=7\;\text{oz.}[/tex]
Standard deviation [tex]=5\;\text{oz.}[/tex]
According to the empirical rule, [tex]99.7\%[/tex] of values lie within [tex]3[/tex] standard deviations of the mean.
So, we have to add and subtract [tex]1.5[/tex] three times in mean weight to obtain the required interval.
[tex]\Rightarrow7-4.5 < 7 < 7+4.5\\\Rightarrow2.5 < 7 < 11.5[/tex]
Thus, the interval that would represent the weights of the middle [tex]99.7\%[/tex] of all oranges from this orchard is between [tex]2.5[/tex] and [tex]11.5[/tex].
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Which of the inequalities below has 3.5 in its solution set?
a) 10x>44
b) 4x<12
c) 5x >16
d) 3x <10
Math Homework 7th Grade
Answer: C
Step-by-step explanation:
5 × 3.5 = 17.5 > 16 .
PLEASE HELP!! STUCK FOR A WHILE
solve for x
Julie started her own lawn mowing business to earn some extra money last
summer. She earned $2100 and had expenses of $669 (lawn mower, weed
eater, gas, etc.). She has no income to report on line 1a or line 1b of
schedule SE below. She also has a zero entry on line 29 of Form 1040. Use
this information to complete table entry 3 below. *
The table below represents which equation ?
Answer:
D
Step-by-step explanation:
Find the slope by picking two ordered pairs in the table and using the slope formula( y2-y1/x2-x1) to get the slope. The smallest numbers are easiest to work with. (-1,1), (0,-2)
-2-1/0-(-1) = 3/0+1 = -3/1 = m=-3
Use one of the points you used and plug in the x and y values of the ordered pair into the equation with the slope to find your b( y-intercept). (0,-2)
-2= -3(0) +b
-2= 0+b
b=-2
The final equation will only have your slope and b( y-intercept). That should be your answer. Hope this helps!
Final Equation: y=-3x-2
A paint can has a radius of 4 inches and a height of 15 inches. What is the volume of the paint can? Round to t tenth. Use 3.14 for cubic inches
Answer:
Step-by-step explanation:
r=4 in
h=15 in
The paint can is a cylinder. The volume of the cylinder is: V=S×h (S stands for the area of the base, h is for height).
The area of our cylinder's base is a circle, so:
S=πr²=4²×π=16π≈50.24 (in²)
Thus, the volume is:
V≈50.24×15≈753.6 (in³)
No links please 15 Points
Answer:
C
Step-by-step explanation:
Is the answer A, B, C, or D?
Answer:
A
Step-by-step explanation:
2 3/8=19/8=2.375
Help. I need help
plssss
Answer:
I have no idea lol (what math is this-)
Step-by-step explanation:
uhh- my brain is telling me to add the x and y numbers row by row together, like 2+1, 3+2, 4+3, ect, but I am pretty sure that's completely wrong XD, sorry for not being able to help QVQb, hope you figure it out lol
I WILL GIVE U BRAINLIEST AND THANKS AND 5 STARS
please help this is very important
this is a big part of my grade
Answer:
pretty sure the answer is electrons so D
Step-by-step explanation:
Electrons are particles that surround the nucleus of an atom like a cloud
Two parallel lines are cut by a transversal. What is the measure of <1?
A 80
В. 180
C. 100
D. 90
Answer:
C - 100
Step-by-step explanation:
9514 1404 393
Answer:
C. 100°
Step-by-step explanation:
Consecutive (same-side) exterior angles are supplementary.
∠1 = 180° -∠7 = 180° -80°
∠1 = 100°
If there is a $50 profit on the large cabinets and a $30 profit on the small cabinets.
What number of large and small cabinets maximizes the objective function?
P = 50x + 30y
a) o large and 10 small
b) 8 large and small
c) 4 large and small
d) 4 large and 5 small
Answer: B
Step-by-step explanation: I hope I am good at math if not sorry
The combination of 8 large cabinets and 8 small cabinets maximizes the objective function, resulting in a value of 640. Option b is correct.
To maximize the objective function P = 50x + 30y, where x represents the number of large cabinets and y represents the number of small cabinets.
Need to determine the combination of x and y that results in the highest value for P.
For 0 large and 10 small:
P = 50(0) + 30(10)
= 0 + 300
= 300
For 8 large and 8 small:
P = 50(8) + 30(8)
= 400 + 240
= 640
For 4 large and 4 small:
P = 50(4) + 30(4)
= 200 + 120
= 320
For 4 large and 5 small:
P = 50(4) + 30(5)
= 200 + 150
= 350
Based on these calculations, 8 large cabinets and 8 small cabinets maximizes the objective function, resulting in a value of 640.
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(09.02)
Solve x2 - 8x - 20 = 0. (1 point)
x = 4, x = -5
x = -4, x = 5
x = 2, x = -10
x = -2, x = 10
Answer:
x = - 2, x = 10
Step-by-step explanation:
Given
x² - 8x - 20 = 0
Consider the factors of the constant term (- 20) which sum to give the coefficient of the x- term (- 8)
The factors are - 10 and + 2 , since
- 10 × 2 = - 20 and - 10 + 2 = - 8 , then
(x - 10)(x + 2) = 0
Equate each factor to zero and soilve for x
x + 2 = 0 ⇒ x = - 2
x - 10 = 0 ⇒ x = 10
J u l i a n has partially filled the prism below with 16 unit cubes.
A rectangular prism with a length of 4, height of 3, and width of 3.
How many more unit cubes will he need to completely fill the prism?
11
20
25
36
Answer:b aka 20 just look at the number and look for all the open spaces.
Use formulas to find area
Answer:
120.08
Step-by-step explanation:
15.8 x 7.6
-> 120.08 [tex]m^2\\[/tex]
CAN SOMEONE HELP ME PLEASE I NEED TO PASS
Answer:
Circumference is 18.84956
Area: 28.27433
Step-by-step explanation:
(Circumference) C=2πr=2·π·3≈ 18.84956
(Area) A=πr2=π·32≈ 28.27433
struggling with homework!!
Answer:
40
Step-by-step explanation:
if 20% were Caesar and 20 divided by 5 is 4, then every four salads sold is five percent.