The cross section of a square pyramid taken perpendicular to the base that passes through the top vertex produces which two-dimensional shape?
Note: Use all lowercase letters in your answer to receive credit.
Answers
Answer:
triangle.
Step-by-step explanation:
given: a square pyramid
to find : shape of cross section made when a plane perpendicular
to base and passes through top vertex.
when a plane cuts the square pyramid perpendicular to base and passes through top vertex we get a cross section made by its two equal slant height and side of the square.
therefore, we get a triangle or more specifically isosceles triangle.
picture is attached.
Related Questions
Find (r-s) (t-s) + (s-r) (s-t) for all numbers r, s, and t. (a) 0 (b) 2 (c) 2rt (d) 2(s-r) (t-s) (e) 2(r-s) (t-s)
Answers
(r-s) is just (s-r) times (-1)
similarly
(t-s) is just (s-t) times (-1)
this means that :
(r-s) (t-s) + (s-r) (s-t)=-(s-r)[-(s-t)]+(s-r) (s-t)
the 2 minuses in the first multiplication cancel each other so we have:
-(s-r)[-(s-t)]+(s-r) (s-t)=(s-r) (s-t)+(s-r) (s-t)=2(s-r) (s-t)
Answer:
d)2(s-r) (t-s)
Answer:
d
Step-by-step explanation:
Negative numbers are less than positive numbers. Does this mean that the absolute value of a negative number must be less than the absolute value of a positive number? Explain.
Answers
Example: |-6| > |4|
Find the perimeter and area of a square with side lengths of 16
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perimeter = 4S = 16*4 = 64 units
area = S^2 = 16^2 = 256 square units
Answer:
The perimeter of a square with side lengths of 16 units is 64 units.
The area of a square with side lengths of 16 units is [tex]256 unit^2[/tex].
Step-by-step explanation:
Length of the square = a = 16 units
Perimeter of the square = P = [tex\]4\times a[/tex]
[tex]P=4\times 16 units = 64 units[/tex]
Area of the square = A = [tex]a^2[/tex]
[tex]A=a^2=(16 unit)^2=256 unit^2[/tex]
The perimeter of a square with side lengths of 16 units is 64 units.
The area of a square with side lengths of 16 units is [tex]256 unit^2[/tex].
Simplify the expression please
Answers
now.. not sure if that's really simplified per se, I guess is a little.
you could also just take some "b" from the root and rationalize the denominator and end up with [tex]\bf \cfrac{b^2\sqrt[16]{a^{11}b^8}}{a}[/tex]
then again, not sure how simplified per se that one is either.
Solve (2/3)-(1/x)=5/6
Answers
[tex]2 - \frac{1(3)}{x} = \frac{5(3)}{6} [/tex] Simplify the numerators
[tex]2 - \frac{3}{x} = \frac{15}{6} [/tex] Multiply both sides by 6
[tex]12 - \frac{3(6)}{x} = 15[/tex] Simplify the numerator
[tex]12 - \frac{18}{x} = 15[/tex] Multiply both sides by x
12x - 18 = 15x Subtract 12x from both sides
-18 = 3x Divide both sides by 3
-6 = x Switch the sides to make it easier to read
x = -6
Check your answer by plugging -6 in for the x in the original problem:
[tex] \frac{2}{3} - \frac{1}{x} = \frac{5}{6} [/tex] Plug in -6 for x
[tex] \frac{2}{3} - \frac{1}{-6} = \frac{5}{6} [/tex] Change [tex] \frac{2}{3} [/tex] to [tex] \frac{4}{6} [/tex] so all denominators are the same
[tex] \frac{4}{6} - \frac{1}{-6} = \frac{5}{6} [/tex] Change [tex] \frac{1}{-6} [/tex] to [tex] \frac{-1}{6} [/tex] for easier work
[tex] \frac{4}{6} - \frac{-1}{6} = \frac{5}{6} [/tex] Subtract the numerators (4 - (-1) )
[tex] \frac{5}{6} [/tex] = [tex] \frac{5}{6} [/tex]
So, x = -6 .
Billy Goats invested some money in stocks and bonds. The total amount he invested was $\$165,\!000$. If he invested 4.5 times as much in stocks as he did in bonds, what was his total investment in stocks?
Answers
s + b = 165,000
s = 4.5b
4.5b + b = 165,000
5.5b = 165,000
b = 165,000/5.5
b = 30,000...his investment in bonds
s + b = 165,000
s + 30,000 = 165,000
s = 165,000 - 30,000
s = 135,000 <=== his investment in stocks
An equation is formed when two equal expressions. The total investment that Billy made in stocks is $135,000.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
Let the amount that is invested in stocks be represented by x, while the amount that is been invested in bonds is represented by y.
Given that Bily invested 4.5 times as much in stocks as he did in bonds. Therefore, the equation to represent the given situation can be written as,
x = 4.5y
Also, given that the total amount that Billy invested is $165,000. Therefore, the total invested amount can be written as,
$165,000 = x + y
Substitute the value of x in the equation,
$165,000 = 4.5y + y
$165,000 = 5.5y
y = $165,000 / 5.5
y = $30,000
Now substitute the value of y in the first equation to know Billy's investment in stocks.
x = 4.5y
x = 4.5($30,000)
x = $135,000
Hence, the total investment that Billy made in stocks is $135,000.
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if g (x)= x^2-5, where does the graph g (x) cross the x-axis?
Answers
x^2 - 5 = 0
x^2 = 5
x = sqrt5 or -sqrt5
so grapg corosses the x axis at (-sqrt5,0) and (sqrt5, 0)
What is 0.0333333333333333 as a fraction?
Answers
Use the remainder theorem to determine the remainder when d4 + 2d2 + 5d − 10 is divided by d + 4. A. 42 B. 258 C. 126 D. 106
Answers
Answer: The correct option is (B) 258.
Step-by-step explanation: We are give to use the remainder theorem to determine the remainder when
[tex]d^4+2d^2+5d-10[/tex] is divided by [tex]d+4.[/tex]
Remainder Theorem : If p(x) is a polynomial in x and a is any real number, then the remainder when p(x) is divided by (x - a) is p(a).
For the given division, we have
[tex]p(d)=d^4+2d^2+5d-10\\\\d-a=d+4~~~~~\Rightarrow a=-4.[/tex]
Therefore, the remainder when p(d) is divided by (d + 4) is given by
[tex]p(-4)\\\\=(-4)^4+2\times (-4)^2+5\times(-4)-10\\\\=256+32-20-10\\\\=288-30\\\\=258.[/tex]
Thus, the required remainder is 258.
Option (B) is CORRECT.
The measure of an angle's supplement is 24 less than twice the measure of the angle. Find the measure of the angle and its supplement
Answers
Let one angle be x.
Thus, the other angle = 2x -24
x + 2x - 24 = 180
3x = 204
x = 68
2x -24 = 136 - 24 = 112
Thus, the angles are 68° and 112°
What is the differnce between union and intersection in math
Answers
Final answer:
Union and intersection are two operations used in set theory to combine sets or find common elements.
Explanation:
Union and intersection are two operations used in set theory. In mathematics, a set is a collection of distinct objects. The union of two sets A and B, denoted by A ∪ B, is the set that contains all the elements that are in either A or B or in both. The intersection of two sets A and B, denoted by A ∩ B, is the set that contains all the elements that are common to both A and B.
For example, let's consider two sets: A = {1, 2, 3} and B = {2, 3, 4}. The union of A and B is {1, 2, 3, 4}, as it contains all the elements from both sets. The intersection of A and B is {2, 3}, as those are the elements that are common to both sets.
Which of the following show the factored equivalent of f(x) = (2x2 +7x + 3)(x - 3) and its zeros?
f(x) = (x + 5)(x + 7)(x - 3); -5, -7, 3
f(x) = (x + 3)(2x + 1)(x - 3); -3, -0.5, 3
f(x) = (x + 5)(x + 7)(x - 3); 5, 7, -3
f(x) = (x + 3)(2x + 1)(x - 3); 3, 0.5, -3
Answers
Final answer:
The factored equivalent of [tex]f(x) = (2x^2 +7x + 3)(x - 3)[/tex] is f(x) = (x + 3)(2x + 1)(x - 3), and its zeros are -3, -0.5, and 3.
Explanation:
The factored equivalent of the polynomial f(x) = (2x2 +7x + 3)(x - 3) and its zeros can be determined by factoring [tex]2x^2 + 7x + 3[/tex]. We notice that this quadratic can be factored into (2x + 1)(x + 3). Therefore, when we include the (x - 3) term, we get the fully factored form,
f(x) = (2x + 1)(x + 3)(x - 3). To find the zeros, we set each factor equal to zero:
2x + 1 = 0 gives a zero of -0.5;
x + 3 = 0 gives a zero of -3; and,
x - 3 = 0 gives a zero of 3. Thus, the correct answer is
f(x) = (x + 3)(2x + 1)(x - 3); -3, -0.5, 3.
In what direction and by how many units is the graph of f(x) = 6 sin(2x + π) − 5 vertically and horizontally shifted?
Down 5, left pi over 2
Up 5, left pi over 2
Down 5, right pi over 2
Up 5, right pi over 2
Answers
goodluck! :-)
Answer:
Option 1 is correct.
Step-by-step explanation:
Given graph of f(x)=6 sin(2x + π) - 5
we have to tell in what direction the graph vertically and horizontally shifted.
As, f(x+1) is a change on the inside of function, giving a horizontal shift left by 1, and the subtraction by 3 in f(x+1)-3 is a change to the outside of function, giving a vertical shift down by 3.
Hence, the graph of f(x)=6sin(2x + π) - 5
Here, change on the inside of function, giving a horizontal shift left by [tex]\frac{\pi}{2}[/tex], and subtraction by 5 in function is a change to the outside of function, giving a vertical shift down by 5.
Option 1 is correct.
A bag contains 10 marbles: 4 are green, 2 are red, and 4 are blue. Christine chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both marbles she chooses are blue? Write your answer as a fraction in simplest form.
Answers
2nd marble is blue is 3/9
Multiple together and the probability is 12/90 or 2/15
Answer:
The probability that both marbles she chooses are blue is [tex]\frac{2}{15}[/tex]
Step-by-step explanation:
Given : A bag contains 10 marbles: 4 are green, 2 are red, and 4 are blue. Christine chooses a marble at random, and without putting it back, chooses another one at random.
To find : What is the probability that both marbles she chooses are blue?
Solution :
Total number of marbles = 10
Green marbles = 4
Red marbles = 2
Blue marbles = 4
Probability is favorable outcome upon total number of outcomes.
Probability of getting first marble is blue
[tex]\text{P(first blue marble)}=\frac{4}{10}=\frac{2}{5}[/tex].
Without replacement,
i.e. Blue marble left = 3
Total marble left = 9
Probability of getting second marble is blue
[tex]\text{P(second blue marble)}=\frac{3}{9}=\frac{1}{3}[/tex]
The probability that both marbles she chooses are blue is
[tex]\text{P(both blue marble)}=\frac{2}{5}\times\frac{1}{3}[/tex]
[tex]\text{P(both blue marble)}=\frac{2}{15}[/tex]
Therefore, The probability that both marbles she chooses are blue is [tex]\frac{2}{15}[/tex]
Tan (25pi/2) = ___
A). 1
B). 0
C). -1
D). Undefined
Answers
Type it in your calc. to find
(06.02 MC)
A group of students plotted the number of hours they worked at a cake shop during the holidays and the number of cakes they delivered in a week
Which statement best describes the relationship between the number of hours spent working at the cake shop and the number of cakes delivered?
Greater hours worked, more cakes delivered
Fewer hours worked, more cakes delivered
Greater hours worked, fewer cakes delivered
There is no relationship between hours spent working and number of cakes delivered.
Answers
So your answer is
Greater hours worked, more cakes delivered
Let r=1+2i and s=3+3i find r⋅s
Answers
This problem can be written as (1 + 2i)(3+ 3i). Just like with any binomial, you can use FOIL to multiply this out.
F: 1 x 3 = 3
O: 1 x 3i = 3i
I = 2i x 3 = 6i
L = 2i x 3i = 6i^2
When strung together, you get 3 + 3i + 6i + 6i^2, which simplifies to 3 + 9i + 6i^2. i^2 = -1, since i = √-1. 6 x -1 = -6.
3 + 9i - 6 = -3 + 9i.
The product of r.s is -3+9i.
r = 1+2i ; s = 3+3i
Product of r and s to be determine.
Any number with representation as a+bi is complex number.
Here,
r.s = (1+2i)(3+3i)
= 3+6i+3i+6i²
= 3+ 9i + 6(-1) (∵ i²=-1)
= 3 - 6 +9i
= -3 + 9i
Thus, the product of r.s is -3+9i.
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Are the two functions parallel, perpendicular, the same equation, or none of these choices? -x-3y= -18 9x-3y= -27
Answers
-x-3y=-18 => -3y = -18+x => y= 6 - 1/3 x
9x-3y=-27 -> -3y = -27-9x => y= 9 + 3 x
Just comparing the slopes, you see they are -1/3 and 3, which are each other's negative reciprokes. Negative reciprocal slopes are perpendicular.
whitch of the following is (are) the solution(s) to 11x+3=6
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A family has ninenine children. if this family has exactly threethree boysboysâ, how many different birth and gender orders areâ possible
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You can calculate it as:
[tex]\binom{9}{3} = \frac{9!}{3! \cdot 6!} = \frac{362880}{6\cdot720} = 84[/tex]
can someone explain how to do this plzz
Answers
1 of the shapes will be a small square. The dimensions for it would be 4 by 3 (12)
The second shape, the bigger rectangle has the dimensions, 12 by 6 (72)
Now add these two values 12+72 and you get, 84
you answer is A 84 square inches
what is the quotient? x-3 divided into 4x2+3x+2
Answers
The quotient of x-3 divided into 4x^2+3x+2 is 4x+9.
Explanation:To find the quotient of x-3 divided into 4x^2+3x+2, we need to perform polynomial long division.
Divide the first term of the numerator (4x^2) by the first term of the denominator (x) to get 4x. Write this as the first term of the quotient.Multiply the entire denominator (x-3) by the quotient term (4x) and subtract it from the numerator (4x^2+3x+2).Bring down the next term from the numerator (-3x).Repeat steps 1 and 2 with the new numerator (-3x) and the denominator (x-3).Continue this process until there are no more terms to bring down and divide.After performing polynomial long division, the quotient is 4x+9.
Final answer:
To find the quotient of x-3 divided into 4x^2+3x+2, you can use long division. The quotient is 4+15 with a remainder of 47.
Explanation:
To find the quotient of x-3 divided into 4x2+3x+2, we can use long division.
First, divide the 4x2 term by the x term, which gives us 4x.Multiply 4x by x-3 to get 4x2-12x.Subtract 4x2-12x from 4x2+3x+2 to get 15x+2.Now, divide 15x by x to get 15.Multiply 15 by x-3 to get 15x-45.Subtract 15x-45 from 15x+2 to get 47.Since there are no more terms to divide, the quotient is 4+15 and the remainder is 47.Therefore, the quotient of x-3 divided into 4x2+3x+2 is 4+15 with a remainder of 47.
In the formula that gives the circumference of a circle, which quantity is multiplied by 2 ?
Answers
Answer (APEX):
- Radius
Plz help! which expressions are equivalent to 1.06^3t
Answers
[tex]\bf 1.06^3\cdot 1.06^t\implies 1.06^{3+t}\\\\ -------------------------------\\\\ \cfrac{1.06^{9t}}{1.06^{3t}}\implies \cfrac{1.06^{9t}}{1}\cdot \cfrac{1}{1.06^{3t}}\implies 1.06^{9t}\cdot 1.06^{-3t}\implies 1.06^{6t}[/tex]
The probability of a randomly selected car crashing during a year in a certain country is 0.04770.0477. if a family has threethree cars, find the probability that at least one of them has a car crash during a year. is there any reason why the probability might be wrong?
Answers
P(having NO crash) = 1- 0.0477 = 0.9523
ⁿCₓ(p)ˣ. (1-p)ⁿ⁻ˣ
n= number of cars
x = number of crashes
p = 0.0477 (1 crash)
1-p = 0.9523 (NO crash:
Probability of NO crashes at all:
³C₀(0.0477)⁰(0.9523)⁽³⁻⁰⁾
³C₀(1)(0.9523)³ = 0.9523³ = 0.8636 Then P(NO CRASH) = 0.8636
P(at LEAST one crash) = 1 - 0.8636
P(at LEAST one crash) = 0.136
So we are going to find P(none of the cars crashes), then we will subtract it from 1, since:
P(at least one car crashes)+P(no car crashes)=1, as they are 2 disjoint complement events, either one or the other will happen, so the probability that either one or the other happens is 1.
P(a car not crashing)=1-0.0477=0.9523
P(car 1 not crash, car 2 not crash, car 3 not crash)=[tex]0.9523^{3}= 0.864[/tex]
P(at least 1 of the cars crashes)=1-P(none of the 3 cars crash)=[tex]1-0.9523^{3}=1-0.864=0.136[/tex]
Melissa is making clothes for her dolls she has 7/8 yard of fabric each doll shirts require 2/7 of a yard of fabric. how many shirts can she make for each dolls.
Answers
7/8 / 2/7 =
7/8 * 7/2 = 49/16 = 3 1/16
she can make 3 shirts
Aida is attending a trekking camp. She walks from her tent to a hilltop in 2 hours. She has a picnic with her friends on the hilltop for 6 hours. Aida walks back to her tent in 1 hour. Which graph best represents the distance, y, in miles, traveled by Aida for a certain amount of time, x, in hours? A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 1, 4. The second straight line joins ordered pairs 1, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 7, 4. The third straight line joins ordered pairs 7, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 1, 4. The second straight line joins ordered pairs 1, 4 and 7, 4. The third straight line joins ordered pairs 7, 4 and 9, 0.
Answers
The correct answer among the given choices is the first one:
“A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0.”
The given ordered pairs is in the format of (t, d) where t is time and distance is d. Time will always be on the x-axis since it is always an independent variable.
The first ordered pair should be (2, 4) since it took her 2 hours to trek to the hilltop. From the given choices, only the 1st and 3rd choice has this first ordered pairs so we are down to two choices.
Now the second ordered pair should be (8, 4) since she spent 6 hours at the top but no change in distance. And only the 1st choice has this value therefore it is the answer.
The mean diastolic blood pressure for a random sample of 70 people was 94 millimeters of mercury. if the standard deviation of individual blood pressure readings is known to be 12 millimeters of mercury, find a 90% confidence interval for the true mean diastolic blood pressure of all people.
Answers
To solve this problem, we make use of the formula for Confidence Interval:
Confidence Interval = X ± z * σ / sqrt (n)
where X is the mean value, z is the z score which is taken from the standard tables, σ is the standard deviation, and n is the number of samples
z = 1.645 (at 90% Confidence Level)
Substituting the values into the equation:
Confidence Interval = 94 ± 1.645 * 12 / sqrt (70)
Confidence Interval = 94 ± 2.36
Confidence Interval = 91.64, 96.36
Therefore at 90% confidence level, the blood pressure reading ranges from 91.64 mmHg to 96.36 mmHg.
Branliest and alot of points who answers first
The chart on a cereal box shows that one serving contains 32% of the rda for dietary fiber the rda for dietary fiber is 25 grams write in the box on the chart the number of grams of dietary fiber in one serving
Answers
Name three common measurements that are expressed as a ratio of two units.
Answers
Density , Speed and Mileage(Fuel Economy) are the three common measurements which can be expressed as a ratio of two units.
What are Fundamental Units?
A fundamental unit is a tool for measuring a base quantity. Any physical quantity that cannot be expressed in terms of another physical quantity is referred to as a basic quantity. They are
Length - meter (m)Time - second (s)Amount of substance - mole (mole)Electric current - ampere (A)Temperature - kelvin (K)Luminous intensity - candela (cd)Mass - kilogram (kg)Three Common Measurements be Density , Speed and Mileage where
Density = [tex]\frac{kg}{m^{3} }[/tex]
Speed = [tex]\frac{m}{s}[/tex]
Mileage = [tex]\frac{km}{L}[/tex]
Hence , the three common measurements which can be expressed as a ratio of two units are Density , Speed and Mileage
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