Answer:
3x³+6x²-9x
Step-by-step explanation:
3x * x² = 3x³
3x * 2x = 6x
3x * -3 = -9
3x³ + 6x - 9
* means times
im in year 9 / 8th grade so if im wrong sos x
solve for a side in right triangles
Answer:
4.28
Step-by-step explanation:
This is on my math book. Jada's neighbor said, "my age is the difference between twice my age in 4 years and twice my age 4 years ago." How old is Jada's neighbor.
Answer:
Jada’s neighbor is 16 years of age
Step-by-step explanation:
In this question, we are interested in calculating the age of Jada’s neighbor, given the information in the question.
Let the present age of the neighbor be x years
Her age in 4 years will be x + 4 years old
Her age 4 years ago was x -4 years old
Now, the difference between twice her age in 4 years minus twice her age 4 years ago is her present age.
mathematically that means;
2(x+ 4) - 2(x -4 ) = x
2x + 8 - 2x +8 = x
16-0 = x
x = 16 years
A gift box is in the shape of a trapezoidal prism with base lengths of7 inches and 5 inches and a height of 4 inches. The height of the gift box is 8 inches. What is the volume of the gift box?
Answer:
192 in³
Step-by-step explanation:
A trapezoidal prism is a three dimensional solid that has two similar trapezoids at its top and base.The two similar trapezoids are connected by four rectangles connecting the corresponding sides of the two bases.
The Area of the trapezoid at the top or base = 1/2 (a + b)h
Where a and b are the lengths = 7 inches and 5 inches and the height (h) = 4 inches.
Therefore Area of the trapezoid at the top or base = 1/2 (a + b)h = 1/2(7 + 5)4 = 24 in²
The volume of gift box = Area of the trapezoid at the top or base × height of gift box = 24 × 8 = 192 in³
answer quick for brainliest!
Answer:
b
Step-by-step explanation:
it is the only linar one
What is the theoretical probability of not rolling a 2?
Answer:
Theoretical probability is based upon what is expected when rolling two dice, as seen in the "sum" table at the right. The theoretical probability of rolling an 8 is 5 times out of 36 rolls. The theoretical probability = 5/36 ≈ 13.9%. 3) The experiment rolled more 8's than would be expected theoretically.
Step-by-step explanation:
The theoretical probability of not rolling a 2 is 5/6.
What is probability?It is the chance of an event to occur from a total number of outcomes.
The formula for probability is given as:
Probability = Number of required events / Total number of outcomes.
Example:
The probability of getting a head in tossing a coin.
P(H) = 1/2
We have,
Assuming a fair six-sided die, the probability of rolling a 2 is 1/6.
Therefore, the probability of not rolling a 2 on a single roll of the die is:
P(not rolling a 2) = 1 - P(rolling a 2) = 1 - 1/6 = 5/6
Thus,
The theoretical probability of not rolling a 2 is 5/6.
Learn more about probability here:
https://brainly.com/question/14099682
#SPJ3
what is the slope of the line that passes through (0,1) & (4,-19) ?
Answer:
the answer is -5
Step-by-step explanation:
1. identify the ordered pairs
2. write down the slope formula
3. replace the letters with their values
4. subtract
5. divide
a sweater is marked down 15% off the original price. if the original price was $49.00 what is the sale price of the sweater before sales tax
Answer:
41.65
Step-by-step explanation:
"None for now"
Answer:
41.65
Step-by-step explanation:
100% - 15% = 85%
85% of 49 is 41.65 or 0.85x49=41.65
What is the slope of the line represented by the equation y = y equals StartFraction 4 Over 5 EndFraction x minus 3.x – 3?
-3
-4/5
4/5
3
Answer:
4 Over 5 (4/5)
Step-by-step explanation:
we have
[tex]y=\frac{4}{5}x-3[/tex]
This is the equation of a line in slope intercept form
[tex]y=mx+b[/tex]
where
m is the slope
b is the y-intercept
In this problem we have
[tex]m=\frac{4}{5}[/tex]
[tex]b=-3[/tex]
therefore
The slope is [tex]\frac{4}{5}[/tex]
The slope of the given line is equivalent to 4/5.
Determining the slope of a lineThe equation of a line in slope intercept form is expressed as y = mx + b
where:
m is the slope
b is the y-intercept
Given the equation of a line y = 4/5x. - 3, we are to determine its slope
In this case, the coefficient of x is (4/5), which represents the slope of the line.
m = 4/5
Therefore, the slope of the line is 4/5.
Learn more on slope here: https://brainly.com/question/16949303
#SPJ2
CaN aNyOnE hElP mEh I aM sO CoNfUsEd!! (ik ik i am stupid) ¯\_(ツ)_/¯
LeAnn wants to giftwrap a present she got for her little brother. How many square inches of giftwrap will be needed to cover a box that is 4in x 6in x 2in? In your final answer, include all of your calculations.
Answer: 88 square inches
If we want to wrap the box, we need to work out its surface area - the area that will need to be covered by the giftwrap.
This box is a cuboid, so there will be six faces, with only three different areas (each face has an identical pair).
Let's say the height is 2 in, the length is 6 in and the depth 4 in.
height = 2
length = 6
depth = 4
Let's find the area of the faces that measure height x length:
2 x 6 = 12 square in
Now let's do the same thing for height x depth:
2 x 4 = 8 square in
And finally for length x depth:
6 x 4 = 24
There are two of each of these faces, so let's multiply each result by two.
12 x 2 = 24
8 x 2 = 16
24 x 2 = 48
Finally, all that's left to do is add these numbers together to find the total surface area of the cuboid.
24 + 16 + 48 =
88 square inches
Answer:
88 square inch
Step-by-step explanation:
Apply the distributive property to create an equivalent expression.
2(3-8y) =
It is from khanacademy *********not multiple choice
Answer:
6-16y
Step-by-step explanation:
Multiply 2 by the numbers inside the parentheses.
Enter the values for the variables that give the correct simplified expressions, x = equal to or greater than 0. Need help asap!
Answer:
21, 30,23, 20
Step-by-step explanation:
Answer:2,4,3,6
Step-by-step explanation:
On edg :D
Ron is cooking a meal for some friends. A package of corn contains 8 cups and a serving size is 1 cup. Ron wants to allow 2 servings for each of 11 people.
Answer:
See Explanation
Step-by-step explanation:
The text of the question is incomplete. However, the likely question that can be asked may imply that; "what number of corn package did she use?"
Given that
1 package of corn = 8 cups
1 serving = 1 cup
Total individual = 11
Servings per individual = 2
If there are 2 servings per individual then 1 package of corn will serve the following number of people.
1 package of corn = 8 / 2 individuals
1 package of corn = 4 individuals
Divide both sides by 4.
1 package of corn / 4 = 4 individuals / 4
¼ package of corn = 1 individual.
Re-arrange
1 individual = ¼ package of corn.
So, this means that 11 individuals will get;
[Multiply both sides by 11]
11 * 1 individual = ¼ * 11 package of corn
11 individuals = 11/4 package of corn
11 individuals = 2.75 packages of corn.
Hence, Ron will need 2.75 packages of corn for 11 individuals
Select the correct answer.
In the diagram, and are vertical lines, while is a horizontal line segment. If CR : RB = 2 : 3, what are the coordinates of point Q?
A.
(-2, -4)
B.
(-1, -5)
C.
(-3, -3)
D.
(0, -6)
Answer:
c
Step-by-step explanation:
What is an explanatory variable?
Step-by-step explanation:
An explanatory variable is a type of independent variable. The two terms are often used interchangeably. But there is a subtle difference between the two. When a variable is independent, it is not affected at all by any other variables. When a variable isn’t independent for certain, it’s an explanatory variable.
Let’s say you had two variables to explain weight gain: fast food and soda. Although you might think that eating fast food intake and drinking soda are independent of each other, they aren’t really. That’s because fast food places encourage you to buy a soda with your meal. And if you stop somewhere to buy a soda, there’s often a lot of fast food options like nachos or hot dogs. Although these variables aren’t completely independent of each other, they do have an effect on weight gain. They are called explanatory variables because they may offer some explanation for the weight gain.
The line between independent variables and explanatory variables is usually so unimportant that no one ever bothers. That’s unless you’re doing some advanced research involving lots of variables that can interact with each other. It can be very important in clinical research. For most cases, especially in statistics, the two terms are basically the same.
An explanatory variable is an independent variable.
What is an expression?One mathematical expression makes up a term. It might be a single variable (a letter), a single number (positive or negative), or a number of variables multiplied but never added or subtracted. Variables in certain words have a number in front of them. A coefficient is the number used before a phrase.
Given:
A variable is an explanatory variable.
A researcher-manipulated variable is an explanatory variable when it comes to an experiment.
It serves as a measurement of the change brought about in the response variable.
A predictor variable or an independent variable are terms that are frequently used to describe an explanatory variable.
Therefore, an explanatory variable is an independent variable.
To learn more about the expression;
brainly.com/question/24242989
#SPJ2
In what direction is the line containing the points (1,7) and (10, 15) going?
A. Up and to the right
B. Down and to the right
C. Horizontal
D. Vertical
Answer:
A) Up and to the right
Step-by-step explanation:
On a graph, the direction of the line with points [tex](1,7)[/tex] and [tex](10, 15)[/tex] is going up to the right.
y = 4x - 3
y= 2x + 13
Answer:
x = 9, y = 29 or (8,29)
Step-by-step explanation:
Set the equations equal to each other because they both equal y:
4x - 3 = 2x + 13
Combine like terms:
2x = 16
Divide by 2:
x = 8
Plug 8 into the x for both equations and see if the y is the same:
y = 4(8) - 3 = 32 - 3 = 29
y = 2(8) + 13 = 16 + 13 = 29
Which list orders the numbers from least to greatest?
3,-25, 12, -23.1
13
Answer:
-25, -23.1, 3, 12, 13
Answer:
-25, -23.1, 3, 12, 13
Step-by-step explanation:
West High School has a math building in the shape of a regular octagon. When Mrs. Woods measures an interior angle of the octagon (which is inside her classroom), she gets 135°.
Mrs. Wood’s ceiling is 10.0 feet high and the length of one side of the building is 25.0 feet. What is the volume of West High School’s math building?
Answer:
8 sides
The building is an octagon
Step-by-step explanation:
The sum of all the interior angles in a polygon can be found by the equation
S
=
180
(
n
−
2
)
where
n
is the number of sides the polygon has.
We know that one interior angle is
135
degrees and that all the interior angles are the same because this is a regular polygon. So the sum of the angles must be
135
n
(
135
degrees times the number of sides, or the number of angles).
135
n
=
180
(
n
−
2
)
135
n
=
180
n
−
360
135
n
+
360
=
180
n
45
n
=
360
n
=
8
→
There are
8
sides and
8
interior angles of
135
degrees
Someone please help me with this
Answer:
16 sq. in
Step-by-step explanation:
I think you are asking for the area. The rectangle to the right of the dotted line has dimensions of 4 by 3, so its area is 4 * 3 = 12. We know one of the small rectangle's dimensions, 2, but we don't know the height. However, we see that the difference between the heights of the two figures is 1, and we already know the height of the larger rectangle is 3, so the height of the smaller square is 2. This makes its area 2 * 2 = 4. The total area would then be 12 + 4 = 16 sq. inches. Hope this helps!
Factorise this expression 14a+49 with brackets
Answer:
7(2a +7)
Step-by-step explanation:
[tex]14a+49\\=7\times 2a+7\times 7\\= 7(2a +7)[/tex]
3x +12 =90 what is x
Answer:
x=26
Step-by-step explanation:
3x +12 =90
subtract 12 from each side
3x=78
divide 3 from each side
x=26
Answer:
x = 26
Step-by-step explanation:
Before we begin, we must first remember that to solve for x, we have to get the variable (x) by itself.
To start, you would first subtract 12 from the left and right side of the equation.
3x + 12 - (12) = 90 - (12)
The 12 would cancel out on the left side (12 - 12 = 0) and you would now be left with 3x = 78.
Next, you would divide the left and ride side by 3.
3x ÷ 3 = 78 ÷ 3
This gives you the answer of 1x = 26 or x = 26
A ______ is the degree of truth of a conditional statement
A local radio station has 30 concert tickets. They give away 2 tickets each hour until the tickets are gone.
Which equation represents the number of concert tickets, y, left after x hours?
A. y = -30x + 2
B. y = -2x - 30
C. y = -2x + 30
D. y = 2x + 30
E y = 30x - 2
the equation is y=2x+30
A circle with radius \pink{10}10start color #ff00af, 10, end color #ff00af has a sector with a central angle of \purple{\dfrac{2}{5}\pi} 5 2 πstart color #9d38bd, start fraction, 2, divided by, 5, end fraction, pi, end color #9d38bd radians . What is the area of the sector? Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal.
Answer:
Area of the sector = [tex]20\pi units^{2}[/tex]Step-by-step explanation:
Area of a sector = [tex]\frac{\theta}{360} * \pi r^{2}[/tex]
Given radius r = 10units
[tex]\theta = \frac{2\pi}{5}[/tex]
[tex]\pi = 3.14[/tex]
substituting the given values into the equation above;
Area of the sector = [tex]\frac{2\pi}{5*360} * \pi *10^{2}[/tex]
Area of the sector [tex]=\frac{100\pi}{5}[/tex]
Area of the sector = [tex]20\pi units^{2}[/tex]
What is a rational number?
In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number.
Answer:
A rational number can be written as the ratio of two integers.
Step-by-step explanation:
Fractions (1/2), whole numbers (7 7/1), terminating decimals (2.33) repeating decimals (.222 repeating) square root of a perfect square (V-25 = 5/1) Integers (1 -2)
Blake walked 7/8 of a mile in 1/5
of an hour. If Blake continued walking at the same rate, what is the distance he would travel in one hour?
Answer: 4 3/8
Step-by-step explanation:
If he walks 7/8 every 1/5 of an hour, we can multiply that by 5 to get how much he travels every hour. 7/8 * 5=35/8. 35/8 simplifies to 4 3/8
Prana has a savings account and a chequing
account with a total balance of $85.
His parents doubled the amount in each
account and the new total balance is $170.
How much money does Prana have in each
account?
Answer:
There is no unique solution to this problem and there are infinite number of possible solutions which can satisfy these equations.
Step-by-step explanation:
Let S represents Prana's savings account and C represents Prana's chequing account.
Prana has a savings account and a chequing account with a total balance of $85.
Mathematically,
S + C = 85 eq. 1
His parents doubled the amount in each account and the new total balance is $170.
Mathematically,
2(S + C) = 170
2S + 2C = 170 eq. 2
We have two equations and two unknowns.
S + C = 85
S = 85 - C
Substitute the above equation into eq. 2
2S + 2C = 170
2(85 - C) + 2C = 170
170 - 2C + 2C = 170
2C + 2C = 170 - 170
0 = 0
So what does it mean?
it means that there is no unique solution to this problem and there are infinite number of possible solutions which can satisfy these equations.
x =
y =
m ∠ H =
m ∠ G =
Answer:
x=53
y=26
H=106
G=93
Step-by-step explanation:
By the inscribed quadrilateral conjecture:
[tex]2x+(x+21)=180\\(3y+9)+(4y-11)=180\\3x+21=180\\3x=159\\x=53\\7y-2=180\\7y=182\\y=26\\H=2(53)=106\\G=(4(26)-11)=104-11=93[/tex]
Hope this helps!
Please help with this question
Answer: 42/11 = 21/5.5
Step-by-step explanation:
1) Since the hypotenuse is 42 for one of the triangles it must be similar to the other triangles hypotenuse, 11.
2) Therefore, the ratio is 42/11.
3)The adjacent sides to the right angle are 21 and 5.5.
4)Therefore, the ratio is 21/5.5
What is the volume of this rectangular prism?
Answer:
[tex]9 \frac{1}{3} {cm}^{3} [/tex]
Step-by-step explanation:
[tex]v = whl \\ = 2 \times 2 \times \frac{7}{3} \\ = 4 \times \frac{7}{ 3} \\ = \frac{28}{3} {cm}^{3} = 9 \frac{1}{3} {cm}^{3} [/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!!
Answer:
the answer is attached to the picture