Answer:
\(\frac{39}{15}\) a - \(\frac{8}{5}\)
Step-by-step explanation:
Frist combine your like terms
\(\frac{7}{3}\) a + \(\frac{4}{15}\) a The common denominator will be 15
\(\frac{35}{15}\) a+ \(\frac{4}{15}\) a= \(\frac{39}{15}\)a
You cannot combine this with \(\frac{8}{5}\) because these are not like terms.
HELP PLEASE IM GIVE BRAINLIST
The triangle which could be drawn as per the given description is only option b. isosceles triangle with measure 20° and 80°.
An acute triangle with sides measuring 7, 4, and 2
In an acute triangle, the sum of the squares of the two shorter sides must be greater than the square of the longest side .
According to the Pythagorean Theorem.
Here, 7² is greater than (4² + 2²).
So this is not possible.
An isosceles triangle with angles measuring 20° and 80°
In an isosceles triangle, two angles are equal, so if two angle measures 20° and 80°,
Then the third angle measures is
180° - 20° - 80°= 80°
Two angles are congruent implies two sides are congruent.
It is possible to form isosceles triangle.
An obtuse triangle with sides measuring 5, 10, and 15
In an obtuse triangle, the longest side is opposite the largest angle.
Sum of squares of two shorter sides is less than square of longest side according to Pythagorean Theorem.
However, 15²is greater than (5²+ 10²),
so this is not possible.
A scalene triangle with angles measuring 110° and 35°
The sum of the angles of any triangle is 180°,
so the third angle must measure
180° - 110° - 35° = 35°.
Two angles are congruent so it is isosceles triangle.
It is not possible to form scalene triangle.
Therefore, the triangle possible to draw as per the given condition is only option b. isosceles triangle with measure 20° and 80°.
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Question 9 and 10
Thanks so much
Use the discriminant to determine how many and what kind of solutions the quadratic equation 2x² - 4x = -2 has.
O two real solutions
Ono real or complex solutions
O two complex (nonreal) solutions
one real solution
The discriminant of the given quadratic equation is zero, which means that it has two real solutions.
What is a quadratic equation?
The polynomial equations of degree two in one variable of type
f(x) = ax² + bx + c = 0 and with a, b, c, ∈ R and a ≠ 0 are known as quadratic equations. It is a quadratic equation in its general form, where "a" stands for the leading coefficient and "c" is for the absolute term of f(x).
The discriminant's value reveals how many roots f(x) has:
- The quadratic function has two unique real roots if b² - 4ac > 0, otherwise it does not.
The quadratic function has one repeating real root if b² - 4ac = 0.
- The quadratic function has no true roots if b² - 4ac < 0.
The given quadratic equation is:
2x² - 4x = -2
2x² - 4x + 2 = 0
The general equation is :
ax² + bx + c = o
where discriminant is found using the formula b² - 4ac
Comparing the equations, we can write
a = 2
b = -4
c = 2
b² - 4ac = (-4)² - 4*2*2 = 16 - 16 = 0
Since the discriminant is equal to zero, it suggests that the quadratic equation has two equal real and rational roots.
Therefore the discriminant of the given quadratic equation is zero, which means that it has two real solutions.
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Which statements describe the area of the figure on the grid if each square has an area of 9 square meters? Check all that apply. O It is the sum of the areas of 7 full squares and 12 partial squares. It is greater than 162 square meters. It is less than 279 square meters. It is the sum of the areas of 18 full squares and 13 partial squares. It is greater than 63 square meters. It is less than 117 square meters.
Answer:
I dont know for sure but i think its 2,3,4,5,and 6
Jacob is standing 112 m from a building. The angle of elevation from where he is standing on the ground to the top of the building is 62°.
How tall is the building?
Round the final answer to the nearest tenth
Answer:
Step-by-step explanation:
calculating area and circumference or perimeter of a 2d shape. use your measurements to calculate the area and circumference of the circle and to calculate the area and perimeter of the rectangle.
The area and perimeter of 2D shape of Rectangle is 6.8448cm and 11.04cm repectively. The area and perimeter of 2D shape of circle is 5.0761cm and 8.0028cm respectively.
2D shape of Rectangle with dimensions of Length is3.72 cm and Width is 1.84 cm. we can find the area of rectangle with formula Area = length x width and the formula of perimeter is Perimeter = 2(length + width).
Area = length x width = 3.72 cm x 1.84 cm = 6.8448 square cm (rounded to four decimal places)
Perimeter = 2(length + width) = 2(3.72 cm + 1.84 cm) = 11.04 cm
2D shape of Circle with dimension of diameter of 2.54 cm. we can find the area with formula Area = πr^2 and circumference with formula Circumference = 2πr
Radius = diameter / 2 = 2.54 cm / 2 = 1.27 cm
Area = πr^2 = π(1.27 cm)^2 = 5.0761 square cm (rounded to four decimal places)
Circumference = 2πr = 2π(1.27 cm) = 8.0028 cm (rounded to four decimal places)
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____The given question is incomplete, the complete question is given below:
Calculating area and circumference or perimeter of a 2D shape. Use your measurements to calculate the area and circumference of the circle and to calculate the area and perimeter of the rectangle. Rectangle Length: 3.72 cm Width: 1.84 cm Circle : 2.54 cm Diameter of circle
What is the theoretical probability, as a percent, of flipping heads?
Which graph represents the function f(x)=4x?
Responses
Answer:
slope = 4
points on graph = (0,0), (1,4)
Step-by-step explanation:
line going through quadrants 1 and 3. Straight line.
anybody know the answer to this question? I’m kinda lost
Answer:
A. For every 1 inch of mercury the pressure increases, the boiling point is expected to increase by 1.9°F
Step-by-step explanation:
A regression model is in the form :
y = mx + c
With m being the slope = rate of change
In regression, the value of the slope gives the rate of change in y value per unit increase in the value of x
The slope in the question above is 1.9, this means for every unit increase in mercury pressure, then boiling point, y increases by 1.9°F
. Suppose a government agency has a monopoly in the provision of internet connections.
The marginal cost of providing internet connections is 1
2
, whereas the inverse demand
function is given by: p = 1
The government agency as a monopolist will produce and sell internet connections up to the point where the marginal cost is 1/2. The price will be set at 1, given the perfectly elastic demand function.
In the scenario where a government agency has a monopoly in the provision of internet connections and the inverse demand function is given by p = 1, we can analyze the market equilibrium and the implications for pricing and quantity.
The inverse demand function, p = 1, implies that the market demand for internet connections is perfectly elastic, meaning consumers are willing to purchase any quantity of internet connections at a price of 1. As a monopolist, the government agency has control over the supply of internet connections and can set the price to maximize its profits.
To determine the optimal pricing and quantity, the monopolist needs to consider the marginal cost of providing internet connections. In this case, the marginal cost is given as 1/2. The monopolist will aim to maximize its profits by equating marginal cost with marginal revenue.
Since the inverse demand function is p = 1, the revenue received by the monopolist for each unit sold is also 1. Therefore, the marginal revenue is also 1. The monopolist will produce up to the point where marginal cost equals marginal revenue, which in this case is 1/2.
As a result, the monopolist will produce and sell internet connections up to the quantity where the marginal cost is 1/2. The monopolist will set the price at 1 since consumers are willing to pay that price.
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A figure skater is facing north when she begins to spin to her right. She spins at 2250 degrees. Which direction is she facing when she finishes her spin?
step 1
Divide 2250 degrees by 360 degrees
so
2,250/360=6.25
that means
6 complete circles and 0.25 circle
0.25 circle is equal to 90 degrees and she is facing East
The answer is East
If figure the skater is facing north when she begins to spin to her right. She spins at 2250 degrees. She faces the east direction when she finishes her spin.
What is a circle?It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle).
It is given that, a figure skater is facing north when she begins to spin to her right. She spins at 2250 degrees.
Since one rotation of the circle form 360 degree.In order to find the angle when she finishes her spin is,
=2,250/360
=6.25
6.25 shows that 6 complete circles and 0.25 circles and 0.25 circle is equal to 90 degrees and she is facing East.
Thus, if figure the skater is facing north when she begins to spin to her right. She spins at 2250 degrees. She faces the east direction when she finishes her spin.
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Write the coordinates of the vertices after a rotation 90° counterclockwise around the origin.
E (-8,9)
F(-4,9)
G(-4,2)
D(2,-8)
The coordinates of the vertices E (-8,9), F(-4,9), G(-4,2), and D(2,-8) when rotated 90° counterclockwise around the origin of the new coordinates will be E'( - 9, - 8 ), F'( - 9, - 4 ), G'( - 2, - 4 ), and D'( 8, 2 ).
A point A( x, y ) becomes A' when a point is rotated 90 degrees counterclockwise about the origin ( - y, x ). To put it another way, flip x and y, and make y negative.
Therefore, when point E( - 8, 9 ) is rotated 90° counterclockwise around the origin will be:
E'( - 9, - 8 )
When point F( - 4, 9 ) is rotated 90° counterclockwise around the origin the new point will be:
F'( - 9, - 4 )
When point G( - 4, 2 ) is rotated 90° counterclockwise around the origin the new point will be:
G'( - 2, - 4 )
When point D( 2, - 8 ) is rotated 90° counterclockwise around the origin the new point will be:
D'( 8, 2 )
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The gift is 1.5 feet tall and Amberly choose to leave one of its bases uncovered. Explain how many many square inches of paper she would use to wrap the gift, assuming the paper does not overlap
And one of the bases is 9 inches by 0.5 feet
The net area of the paper needed is 4.125 square feet.
What is a cuboid?A cuboid is a three-dimensional closed figure which has volume along with surface area.
The volume of a cuboid is the product of its length, width, and height.
The total surface area of a cuboid is 2(lw + wh + wl) and the lateral surface area is 2(l + w)×h.
Given, The gift is 1.5 feet tall and one of the bases is 9 inches = 0.75 by 0.5 feet.
Therefore the total surface area is,
= 2(1.5×0.5 + 1.5×0.75 + 0.75×0.5).
= 2(0.75 + 1.125 + 0.375).
= 2(2.25).
= 4.5 square feet.
Now, She left one of the bases uncovered which have an area of 0.375 square feet.
Therefore, the net amount of paper needed is = 4.5 - 0.375.
= 4.125 square feet.
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Question 10 of 10
How does the graph of f (x) 3x +2 +4 relate to its parent function?
A. The parent function has been compressed.
B. The parent function has been translated up.
C. The parent function has been stretched.
D. The parent function has been translated to the left.
SUBMIT
The graph of f(x) relate to its parent function by B. The parent function has been translated up.
How does the graph of f(x) relate to its parent function?Given that
f(x) = 3x +2 +4
When evaluated, we have
f(x) = 3x + 6
The parent function of the above is
f(x) = 3x
When f(x) = 3x is compared to f(x) = 3x + 6, we have
Difference = 6
This means that the parant function is translated up by 6 units
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Multiply. Write in simplest form. 2 1/2 x 1 1/2
Answer:
3.75 or 3 3/4
Step-by-step explanation:
Answer:
3.75 or 3 3/4
Step-by-step explanation:
2 1/2 or 2.5 x 1 1/2 or 1.5 is 3 3/4 or 3.75
Hope it helps!
The scale for this drawing is 3 in. = 8 ft. On the drawing, the length of the kitchen measures 7 in. What is the length of the actual Kitchen? Round your
answer to the nearest foot.
Answer:
19 feet
Step-by-step explanation:
First we must make the scale make sense, that is, it is in the same unit, therefore, we will pass 3 inches to feet, we know 1 foot is 12 inches, therefore:
3 inches * 1 foot / 12 inches = 0.25 feet
Which means that the real equivalence is 0.25: 8, now they are 7 inches, therefore:
7 inches * 1 foot / 12 inches = 0.583333
Now, we calculate the number of actual feet using the scale.
0.583333 * 8 / 0.25 = 18.66 feet
that is to say that the length of the current Kitchen is 19 feet if we round
(SAT Prep) Find the value of x.
x 105 35
Angles in a triangle add up to 180 degrees
The value of x is 85 degrees
What is triangle?A triangle is a polygon which has three sides and three vertices. It is one of the normal shapes in geometry. A triangle with vertices A, B, and C has three sides & three angles A, B, C.
here, we have,
How to determine the value of x
The total sum of angles for a triangle is 180 degrees.
So, we have:
x + 35 + 60 = 180
Evaluate the sum
x + 95= 180
Subtract 95 from both sides
x = 85
Hence, the value of x is 85 degrees
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Full question: (SAT Prep) Find the value of x. 35° 60° X
x=?
Evaluate 732,178+167-542,137=
Answer: 190208
Step-by-step explanation:
732 178 + 167 - 542 137 = 190208
In a 5k race, the average time for a runner to finish was 25.2 minutes. The standard deviation is 3.5 minutes. ROUND ALL Z-SCORES TO 2 DECIMAL PLACES.
1. What is the z-score of a runner who finished in 20 minutes?
2.what is the z-score of a runner who finished in 30.5 minutes?
3. what is the z-score of a runner who finished in 26 minutes?
4.why are some z-scores negative and some positive? what does a positive z-score tell you? what does negative z-score tell you?
Please Help im so confused!!!
see link in comments
plssss help me if your good at finding area in shapes plsss
The given shape is a trapezoid with "bases" 15 and 45, and height 10. So its area is
(15 + 45)/2 • 10 = 300
Order the following numbers from least to greatest.
122 meters ABOVE sea level
1,629 meter ABOVE sea level
15.24 meters BELOW sea level
98 meters BELOW sea level
Answer: 98 meter below
15.24 meters below
122 meters above
1629 meters above
Step-by-step explanation:
Mia is thinking of a 3 digit number. When she rounds the number to the nearest 10, it rounds to 750. If she adds 1 to the number, it rounds to 760. What number is Mia thinking of?
Answer:
754
Step-by-step explanation:
If the number in the one's place is 5 or greater, the number is rounded up to the next ten. If the number is less than 5, the number gets rounded down.
754 is the answer because it rounds down to 750 as it is, but if 1 was added to it, it'd be 755 which would round up to 760.
How do I tell if a parabola has a minimum or a maximum?
We can write the equation of a parabola in two different ways:
The standard form:
\(\begin{gathered} y=ax^2+bx+c \\ a\ne0 \end{gathered}\)And the vertex form:
\(y=a(x-h)^2+k\)If the parabola has a minimum or a maximum depends on the leading coefficient (the coefficient of x²) or in both cases the coefficient a.
Let's see the cases:
\(a>0_{\text{ }}(a_{\text{ }}is_{\text{ }}positive)\)If a is positive, the parabola opens upwards, so the parabola has a minimum.
\(a<0_{\text{ }}(a_{\text{ }}is_{\text{ }}negative)\)If a is negative, the parabola opens downwards, so the parabola has a maximum
Find the mass and center of mass of the solid E with the given density rho. E is the cube 0 ≤ x ≤ a, 0 ≤ y ≤ a, 0 ≤ z ≤ a; rho(x, y, z) = 9x2 + 9y2 + 9z2.
Answer:
mass = 9a^5
center of mass = \(\frac{7a}{12}, \frac{7a}{12}, \frac{7a}{12}\)
Step-by-step explanation:
Finding the mass of the solid E
given density function : p ( x,y,z ) = \(9x^2 + 9y^2 + 9z^2\)
Mass = \(\int\limits^a_0 \int\limits^a_0 \int\limits^a_0 {9(x^2+y^2+z^2)} \, dx dydz\) \(= \int\limits^a_0 \int\limits^a_0 {9(\frac{a^3}{3}+ay^2+az^2 )} \, dydz\)
\(= \int\limits^a_0 {9(\frac{a^4}{3}+\frac{a^4}{3} +a^2z^2 )} \, dz\) \(= \int\limits^a_0 {9(\frac{2a^4}{3}+a^2z^2 )} \, dz\) \(= 9 ( \frac{2a^5}{3} + \frac{a^5}{3} )\)
( taking limits as a and 0 )
hence Mass = 9 \((a^5)\)
finding the center of mass
attached below is solution
Question 3 of 5
At the fair, Jamal bought a cone-shaped ice treat. The cone was 10 inches tall and 10 inches in diameter. What was the volume of the
cone?
Factor -4 out of -8+20 expression
Answer: -3
Step-by-step explanation:
How many significant figures are in the number
43.6? 43.6 has [?] significant figures.
Answer:
43.6 has 3 significant figures.
hello this is the problem that I am stuck on I need the equation but most of all I need to understand where to plot the points on the grass to make my line thank you
Given:
The initial amount of water in the pond = 600 liters
The rate at which water is being added = 25 liters per minute
W represents the amount of water in the pond
T represents the number of minutes that water has been added
The equation that relates W to T is a linear equation where W is the dependent variable and T is the independent variable.
Recall that the general form of a linear equation is:
\(\begin{gathered} y\text{ = mx + c} \\ \text{Where m is the slope or the rate of change of y with x} \\ \text{and c is the intercept} \end{gathered}\)For the given problem;
m = 25 litres per minute
c = 600 litres
Hence, the required equation is:
\(W\text{ = 25T + 600}\)The graph of the equation is shown below. A few points from the graph has been used to create a table for the graph
1 Point
In mathematics, when we talk about a(n) we are talking about some of
the people, places, or things under consideration.
Answer:
Population
Step-by-step explanation:
In mathematics, when we talk about the people, places, or things under consideration, we are referring to the population. The Population is the entire sum of objects in a study. When a researcher wants to study factors that concern a particular set of people, places, or things, the group under study is the population. For example, the researcher might want to do a study on the amount of food consumed by Brazilian students in the year 2019. The Brazilian students represent the population, because they are the group of people being studied.
The population under study might sometimes be difficult to study as a whole. For example, the study of the entire Brazilian students might be cumbersome. In such cases, a sample can be drawn from the population and studied, or the population narrowed down a little more, so that it can be easily studied.
A three-way intersection is sometimes called a
T-intersection
Y-intersection
Both a and b
Neither a nor b
Answer:
Both A and B
Step-by-step explanation:
Both a and b. A three-way intersection can be referred to as a T-intersection or a Y-intersection, depending on the shape of the intersection. In a T-intersection, one road intersects another road perpendicularly, forming a T-shape. In a Y-intersection, one road splits into two branches, forming a Y-shape.