Answer:
2 left
Step-by-step explanation:
74/3 = 24.
24*3 = 72
74-72 = 2
what is -10(-7x-7)-4(-8x-9)
Answer:
The answer is -202
The table contains data for five students: hours studied, x, and corresponding test scores, y. Use the regression calculator to make a scatterplot with a trend line.
A 2-column table with 5 rows. Column 1 is labeled x with entries 1, 2, 4, 7, 8. Column 2 is labeled y with entries 76, 81, 89, 87, 91.
Based on the trend line, what score would you expect after studying for 5 hours?
As the number of hours studying increases, the coressponding test score
Answer:86 tends to increase
Step-by-step explanation:
just did this
After 5 hours of studying, expected score will be 86.
As the number of hours studying increases, the corresponding test scores also tends to increase.
What is Scatterplots?Scatterplots are the plotting of set of points on a vertical axis and an horizontal axis. The shows the correlation extent between the numbers of the observed quantities.
Given is a table containing the hours studied, x and the corresponding test scores, y of five students.
x : 1 2 4 7 8
t : 76 81 89 87 91
The trend line is drawn below.
The trend line passes through (2, 81) and (8, 91).
Slope of the line = (91 - 81) / (8 - 2) = 10/6 = 5/3
Equation is of the form y = 5/3 x + c
Substituting the point (2, 81),
81 = 10/3 + c
c = 233/3
Equation of the line is y = 5/3 x + 233/3
When x = 5, y = (5/3 × 5) + 233 / 3 = 86
Hence after 5 hours of studying, there will be a score of 86.
As the number of hours studying increases, the corresponding test scores also tends to increase.
Hence the trend line is given below.
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Work out the surface area of a
cuboid 3cm by 3cm by 4cm?
Answer: 14 cm
Step-by-step explanation:
Answer:
It was 36 cm3
Step-by-step explanation:
3cm x 3 cm x 4 cm
=36 cm3
The radius of a circle is 22 kilometers. What is the circle's circumference?
Use 3.14 for .
Answer:
138.16 km
Step-by-step explanation:
Circumference=2*pi*radius
22*3.14=69.08
69.08*2=138.16
Answer:
138.16 kilometeres
Step-by-step explanation:
C= 2 *π * r
C= 2 * 3.14* 22
C = 138.16 kilometers
What is the approximate circumference of the globe?
Part of the North Carolina Museum of Natural Sciences
is a model of a three-story globe. Assuming the globe
represents a full sphere, the volume of the sphere would
be approximately 57,166 cubic feet.
z feet
Answer:
70
Step-by-step explanation:
Write an expression and solve it with the given values of the letters: b There are x candies in a bag. 4/9 of all the candies are chocolates. How many candies which are not chocolates are in the bag? (x=36)
Answer:
There are 20 candies which are not chocolates are in the bag.
Step-by-step explanation:
We are given the following in the question:
Number of candies in bag = [tex]x[/tex]
Number of candies that are chocolate =
[tex]\dfrac{4}{9}\text{ of the total candies}[/tex]
Number of chocolate candies in the bag =
[tex]=\dfrac{4}{9}\times x=\dfrac{4x}{9}[/tex]
We are given that x = 36.
We have to find the number of candies which are not chocolates are in the bag.
Number of chocolate candies in the bag =
[tex]=\dfrac{4}{9}\times 36 = 16[/tex]
There are 16 chocolate candies in the bag.
Number of candies that are not chocolate =
[tex]= 36-16\\=20[/tex]
Thus, there are 20 candies which are not chocolates are in the bag.
Which is true about the domains and ranges of the functions f(x) = 1/8 (x) and g(x) = 8(x) ?
Answer:
both have a domain and range of all real numbers
Step-by-step explanation:
Does the graph f(x)=-2x^2 -1 have a maximum or a minimum? Explain.
Answer:
It has a maximum
Step-by-step explanation:
The way I think about it is looking at "a" (the leading variable's coefficient, so __x²), if it's negative, the graph is a frown, but if it's positive, it's a smile. In this case, a is -2, so the graph would have the shape of a frown, which has a maximum.
I hope this helped!
A sphere has a volume of 32/3 pie cubic units what is the radius of the sphere
Answer:
radius=2
Step-by-step explanation:
volume= 4/3 pi r^3
32/3pi=4/3r^3
divide out 4/3
8pi=r^3
cube root
r=2
The image shows parallel lines cut by a transversal. The expressions represent unknown angle measurements. What is the value of x?
A)5 B)7 C)9 D)11
Answer: C
because
it is
Answer:
Step-by-step explanation:
the answer is B cause a Supplementary angles sum is 180°. So, set the angles equal to 180° and solve for x.
11x + 8 + 12x + 11 = 180
23x + 19 = 180
23x = 161
x = 7
need help i will be giving brainlest
In the Three-Dimensional Figures and Cross Sections section, what is the difference between a prism and a pyramid? *
Answer:
A prism has two identical bases that are parallel. A pyramid has one base. A prism or pyramid is named for the shape of its base.
Final answer:
The primary difference between a prism and a pyramid is their base shapes, the number of vertices, edges, and faces, with prisms having parallel and congruent bases while pyramids have triangular faces that meet at an apex.
Explanation:
The main difference between a prism and a pyramid lies in the shapes of their bases and the number of faces, edges, and vertices. A prism is a polyhedron that has two parallel and congruent faces called bases that are polygons of the same shape and size, and the other faces, known as lateral faces, are parallelograms resulting from connecting the corresponding vertices of the two bases. In contrast, a pyramid has a polygonal base and triangular faces that connect the base to a single point called the apex. A prism has as many lateral faces as the sides of its base, while a pyramid has as many triangular faces as the sides of the base polygon. Another way to distinguish them is by their vertices and edges; a prism will always have twice as many vertices and edges in the sides of the bases than a pyramid with the same shaped base.
Help me! Thank you! :)
Look at the attached picture ⤴
Hope it will help u..
Answer:
14
Step-by-step explanation:
Given
below, is PQ a minor arc, a major arc, or a semicircle?
A. Minor arc
B. Semicircle C. Major arc
Answer:
B. Semicircle
Step-by-step explanation:
Semicircle means "half of a circle"
A minor arc is when the arc has a degree of less than 180°
A major arc is when the arc has a degree of more than 180°
If the degree is exactly 180°, then it's a semicircle. And it tells you the degree, which is 180°
Answer:
Semicircle
Step-by-step explanation:
Which equation is used to find the experimental probability of an event?
What is the volume of a 3 foot tall cylindrical trash can with a 1 foot radius
The volume of the cylindrical trash can with a 1 foot radius and 3 foot height is 9.426 cubic feet.
Explanation:The volume of a 3-foot tall cylindrical trash can with a 1-foot radius can be calculated using the formula V = πr²h, where r is the radius and h is the height.
Given that the radius is 1 foot and the height is 3 feet, we can substitute these values into the formula:
V = 3.142 × (1 foot)² × 3 feet = 9.426 cubic feet
Therefore, the volume of the trash can is 9.426 cubic feet.
Is u = - 1/2 a solution of 8u - 1 = 6u
Answer:
-1/2 is not a solution
Step-by-step explanation:
8u-1 = 6u
Subtract 8u from each side
8u-1 -8u = 6u-8u
-1 = -2u
Divide each side by -2
-1 /-2 = -2u/-2
1/2 = u
Answer:
No, u = - 1/2 is not a solution of 8u - 1 = 6u
Step-by-step explanation:
[tex]8u - 1 = 6u \\ 8u - 6u = 1 \\ 2u = 1 \\ \\ u = \frac{1}{2} [/tex]
here we get u = +1/2
Round 88.27 to the nearest one.
Answer:
88
Step-by-step explanation:
Basically you look at the number after the decimal point and if it is below 5 it will turn to 88. If it is over 5 it will be a 89. For this you also ignore the 7. The 7 does not mean anything.
Which of the following is a linear function?
y = 3x^2
y = 1 over 3x
y = x^3 + 5
2 over 3x = y − 1
Answer:
y= 1 over 3x
Step-by-step explanation:
I thought it was 2 over 3x but it was wrong so it has to be y= 1 over 3x
A group of 100 students were asked if they study French or Spanish in school. The results are shown in this two-way table.
Which statements are correct? Check all that apply.
Answer: A,C,D
Step-by-step explanation:
Answer:
A,C,D on edg, 2021
Step-by-step explanation:
Which statement is true about the data set 4, 5, 6, 6, 7, 9, 12
Answers:
A: mean=mode
B: mode=median
C: mean < median
D: mode > mean
Answer:
b
Step-by-step explanation:
Because there are two sixes so that is the mode and the middle is 6 so that would be the middle and both of them are six so the answer would be B
The mode and the median have the same value which is 6. Therefore, option B is the correct answer.
The given data set is 4, 5, 6, 6, 7, 9, 12.
What is the mode?The mode is the value that appears most frequently in a data set. A set of data may have one mode, more than one mode, or no mode at all.
The mode of the given data is 6.
Median: The median is the middle number in a sorted, ascending or descending list of numbers and can be more descriptive of that data set than the average.
The median of the given data is 6.
Mean = (4+5+6+6+7+9+12)/7
=49/7 = 7
Here, the mode and the median have the same value which is 6. Therefore, option B is the correct answer.
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Find the sum -6/3 - (-7/15)
Answer:
-1 [tex]\frac{8}{15}[/tex]
Step-by-step explanation:
That's the answer I think
Answer:
- 23/15 or - 1 8/15
Step-by-step explanation:
When you want to subtract fractions, you first want to see if they have the same denominator. In this case, there isn't a common denominator so we need to make it so there is. Since 15 is the larger one and a multiple of 3, we can change -6/3 to -30/15 by multiplying the top and bottom by 5. Now the double negatives cancel each other out so instead of -30/15 - (-7/15), it will be -30/15 + 7/15. Add them together and you get -23/15.
what is a compound inequality that represents all real numbers that are greater than -8 but less than 8
Answer:
The inequality is "-8 < x < 8" that can also be expressed as x > - 8 and x < 8
Step-by-step explanation:
In this case there are two inequalities. The first one is for all real numbers that are greater than -8. In this case we will represent the real numbers as "x" and this inequality can be represented as:
x > - 8
The second inequality is for all real numbers that are less than 8, this can be represented as:
x < 8
To create the compound inequality we have two use both of the inqualities above:
-8 < x < 8
x > - 8 and x < 8
In this case we use and because the real number must satisfy both inequalities at the same time.
someone help please!!
Answer:
9. 0.3
10. 0.0
11. 0.4
12. 0.3
Step-by-step explanation:
I am not 100% sure about this, but this is what I could come up with.
solve the equation for x
-2(-4-6x)=-10+3x
Answer:
x= -2Step-by-step explanation:
[tex]-2(-4-6x)=-10+3x \: [/tex]
[tex]8 + 12x = - 10 + 3x[/tex]
[tex]12x - 3x = - 10 - 8[/tex]
[tex]9x = - 18[/tex]
[tex]x = \frac{ - 18}{9} = - 2[/tex]
A population has a standard deviation of 5.5. What is the standard error of
the sampling distribution if the sample size is 49? Round your answer to two
decimal places.
Answer:
The standard error of the sampling distribution is [tex]\sigma_x = .79[/tex].
Step-by-step explanation:
We can find the standard error of the sampling distribution using this formula:
The standard deviation of the sampling distribution, also known as the standard error, can be found by taking the population standard deviation and dividing it by the square root of the sample size, both of which we are given in the problem.
[tex]\displaystyle \sigma_x = \frac{5.5}{\sqrt{49 }} = .7857[/tex]Rounded to two decimal places: [tex]\sigma_x = .79[/tex]
The standard error of the sampling distribution if the sample size n = 49 and the population standard deviation σ = 5.5 is .79.
Given: mlln
What is the value of x?
Answer:
x = 8°
Step-by-step explanation:
m II n
Alternate interior angles are equal.
6x - 2 = 46
6x = 46 +2
6x = 48
x = 48/6
x = 8
Answer:
8
Step-by-step explanation:
When you have a line intersecting parallel lines, the opposite interior angles are always the same.
46 + 2 = 48
48 / 6 = 8
what is Pythagorean theorem
Answer:
Pythagorean theorem - theorem that states that the sum of the squares of the two legs is equal to the square of the hypotenuse in a right triangle
what is the value of x?
Sarina’s dog, Bruno, has to go on a diet! Sarina puts Bruno on a diet plan of daily exercise and a special type of dog food. She estimates Bruno will lose
1 1/2 pounds per week on this plan.
Answer the following questions regarding Bruno's weight loss.
a. How many pounds does Sarina estimate Bruno will lose in 2 weeks?
b.How many pounds does Sarina estimate Bruno will lose in
8 1/2 weeks?
c. Write an equation for this situation. Use w to represent weeks and use p to represent the number of pounds Bruno loses. (Because Bruno is losing weight, the number of pounds he loses will be defined as a negative value.
please help
In two weeks he will lose 3 pounds
In 8.5 weeks he will lose 12.75 pounds
p= w(-1.5)
To make a profit, stores mark up the prices on the items they sell. A sports store buys skateboards from a supplier for s dollars. What is the retail price for skateboards that the manager buys for $35 and $56 after a 42% markup ? Which expressions represent the markup of the skateboard, where s is the original cost of the skateboard
Answer:
The retail price for the $35 skateboard = $49.70
The retail price for the $56 skateboard = $79.20
Step-by-step explanation:
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