Answer:
Accroding to the question my guess for the answer would be 10
Step-by-step explanation:
I solved it like this
1000-900
= 100
=1000/100
=10
Find the surface area of the pyramid.
A drawing of a square pyramid. The length of the base is 4.5 meters. The height of each triangular face is 6 meters.
The surface area of the pyramid is 74.25 square meters.
What is surface area?Surface area is the total area that the surface of an object occupies. It is the sum of the areas of all the faces, sides, and curved surfaces of an object. Surface area is usually measured in square units, such as square meters, square feet, or square centimeters.
What is pyramid?A pyramid is a polyhedron with a polygonal base and triangular faces that meet at a common vertex (known as the apex). Pyramids are named according to the shape of their base.
In the given question,
The area of the base is simply the area of a square, which is:
Area of base = length x width = 4.5m x 4.5m = 20.25 square meters
To find the area of each triangular face, we first need to find the length of the slant height (the height of the triangle).
We can use the Pythagorean theorem to do this:
h²= (1/2 x base)² + height²
h² = (1/2 x 4.5)² + 6²
h² = 2.25 + 36
h² = 38.25
h = √38.25
h = 6.18 meters (rounded to two decimal places)
Now that we know the slant height, we can find the area of each triangular face:
Area of one triangular face = (1/2 x base x height) = (1/2 x 4.5 x 6) = 13.5 square meters
Since there are four triangular faces on a square pyramid, we need to multiply this by 4 to find the total area of the triangular faces:
Total area of triangular faces = 4 x 13.5 = 54 square meters
Finally, we can find the surface area of the pyramid by adding the area of the base and the area of the triangular faces:
Surface area = Area of base + Total area of triangular faces
Surface area = 20.25 + 54
Surface area = 74.25 square meters
Therefore, the surface area of the pyramid is 74.25 square meters.
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I really need help on this question this is the last one
Answer:
B. 19
Step-by-step explanation:
A triangle has three angles that add up to 180°.
86 + 32 = 118°
180 - 118 = 62°
The third angle has to equal 62°.
3x + 5 = 62°
3x = 57
x = 19°
Hope that helps.
Answer:
\(86 + 32 + 3x + 5 = 180 \\ 123+ 3x = 180 \\ 3x = 57 \\ x = 19\)
1st term of geometric sequence is 1/2 and 9th term is 128. Find sum of 5th term?
Answer:
31/2 or 15½
Step-by-step explanation:
From the question given above, the following data were obtained:
First term (a) = ½
9th term (T₉) = 128
Sum of 5th term (S₅) =?
Next, we shall determine determine the common ratio of the sequence. This can be obtained as follow:
First term (a) = ½
9th term (T₉) = 128
Common ratio (r) =?
T₉ = ar⁸
128 = ½ × r⁸
Cross multiply
r⁸ = 128 × 2
r⁸ = 256
Express 256 in index form with 2 as the base
r⁸ = 2⁸
r = 2
Finally, we shall determine the sum of the 5th term. This can be obtained as follow:
First term (a) = ½
Common ratio (r) =
Number of term (n) = 5
Sum of 5th term (S₅) =?
Sₙ = a[rⁿ – 1] / r – 1
S₅ = ½[2⁵ – 1] / 2 – 1
S₅ = ½[32 – 1] / 1
S₅ = ½ × 31
S₅ = 31/2 or 15½
Thus, the sum of the 5th term of the sequence is 31/2 or 15½
rianna went on a trip to the art museum and sketched a scale drawing of a rectangular wall mural. She used a scale factor of 0.2. The sketch was 12 inches wide and 18 inches long. What was the length of the mural?
3.6 inches
18.2 inches
60 inches
90 inches
Answer:
3.6
Step-by-step explanation:
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plz help me I don’t get there problem!!!!
Answer:
its C. do you need an explanation? i could give one if you want
Step-by-step explanation:
Solve:
At the high school, 1/3 of the students play an instrument. Of the students who play an instrument, 2/3 play a string instrument. What fraction of the students at the high school play a string instrument?
Answer:
2/9 of the high school students play string instruments.
Step-by-step explanation:
\( \frac{1}{3} \times \frac{2}{3} = \frac{2}{9} \)
Please answer this correctly without making mistakes
Answer:
48.5 us cups
Step-by-step explanation:
Answer:
48 cups 4 fluid ounces. (us)
Step-by-step explanation:
What expression uses the GCF and is equivalent to 28 + 16
Answer:
The answer is 4(7+4)
Giving 50 brainley points for whoever helps me out here!!!
So, f(x) is function notation and another name for x?
True or False
Please I would really appreciate your help so much!! Thanks
Answer:
True
Step-by-step explanation:
What will be the result of substituting 2 for x in both expressions below?
+4
x+6-x-2
O Both expressions equal 5 when substituting 2 for x because the expressions are equivalent.
O Both expressions equal 6 when substituting 2 for x because the expressions are equivalent.
O One expression equals 5 when substituting 2 for x, and the other equals 2 because the expressions are not
equivalent.
One expression equals 6 when substituting 2 for x, and the other equals 2 because the expressions are not
equivalent.
Both expressions equal 5 when substituting 2 for x because the expressions are equivalent.
Equivalent Algebraic expressions:Algebra is the branch of mathematics that deals with numbers and values which are represented with letters and symbols.
Sometimes, we do not want to mention a particular number, we can represent the number by a letter or a suitable symbol. This approach is algebraic.
For example, d + d = 2d
This is an example of an algebraic expressionns.
Given the algebraic expressions,
\(\frac{1}{2}x + 4 \\ x + 6 - \frac{1}{2}x - 2\)
Substituting 2 for x in the first expression gives:
(1/2 × 2) + 4
1 + 4
5
Substituting 2 for x in the second expression gives:
2 + 6 - (1/2 ×2) - 2
8 - 1 - 2
8 - 3
5
Both expressions equal 5 when substituting 2 for x because the expressions are equivalent.
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THis is due in 28 minutes help ASAP
Which measure is equivalent to 1.2 km?
0.12 cm
120 cm
1200 cm
120,000 cm
Answer:
I promise you that it is 120,000cm
Step-by-step explanation:
Answer:
120,000 cm
Step-by-step explanation:
multiply 1.2 by 100,000
Busca dos ejemplos que validen o no la siguiente afirmación. Si a y b son números enteros y a
Answer:
what are you saying?
Step-by-step explanation:
PLEASEEEE HELPPPP!!!!
i will give brainliest
A) 60
B) 120
C) 360
D) 40
Answer:
40 m^3
Step-by-step explanation:
Volume of a pyramid = 1/3 * base area * height
base area = 4 x 4
1/3 * (4x4) * 7.5 = 40 m^3
Find the volume (in cubic inches) of an exercise ball with a radius of 14 inches. (Round your answer to one decimal place.)
Answer:
11,494.0³
Step-by-step explanation:
Volume of a sphere= (4/3) × pi × radius³
4÷3 × 3.14 ×14³
= 11,494.0³
Emiliana runs a restaurant that receives a shipment of 505050 tangerines every day. According to the supplier, approximately 12\, percent of the population of these tangerines is overripe. Suppose that Emiliana calculates the daily proportion of overripe tangerines in her sample of 505050. We can assume the supplier's claim is true, and that the tangerines each day represent a random sample. What will be the shape of the sampling distribution of the daily proportions of overripe tangerines
Answer:
skewed to the right
Step-by-step explanation:
4) Two-thirds of a number subtracted by five is thirty.
Answer:
x=52.5
Step-by-step explanation:
2/3x-5=30
2/3x=35
x=52.5
what is the slope of line that passes through points (-2,7) and (-3,3)
Considering the expression of a line, the slope of line that passes through points (-2,7) and (-3,3) is 4.
What is a linear equationA linear equation o line can be expressed in the form y = mx + b
where
x and y are the variables.m is the slope.b is the ordinate to the origin and represents the y-intercept of the line.Knowing two points (x₁, y₁) and (x₂, y₂) of a line, the slope m can be calculated as:
m= (y₂ - y₁)÷ (x₂ - x₁)
Slope in this caseIn this case, being (x₁, y₁)= (-2, 7) and (x₂, y₂)= (-3, 3), the slope can be calculated as:
m= (3 -7)÷ (-3 -(-2))
m= (3 -7)÷ (-3 +2)
m= (-4)÷ (-1)
m= 4
Finally, the slope is 4.
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HELPP!!!
The area of the figure is ____ square units.
Answer:
The answer is 132 square units
Step-by-step explanation:
Cutting the shape
we have two trapeziums
A=(area of small +Area of big)Trapezium
A=1/2(3+9)8 + 1/2(9+12)8
A=1/2×12×8 + 1/2×21×8
A=12×4 + 4×21
A=48+84
A=132 square units
The parent function f(x) = 1.5x is translated such that the function g(x) = 1.5x + 1 + 2 represents the new function. Which is the graph of g(x)?
For what values of x are the following expressions equal to each other. the binomials x^2 - 10x +31 and x+1
Answer:
To find the values of x for which the expressions x^2 - 10x + 31 and x + 1 are equal to each other, we can set them equal to each other and solve for x.
Setting x^2 - 10x + 31 equal to x + 1:
x^2 - 10x + 31 = x + 1
Rearranging the equation to standard quadratic form:
x^2 - 10x + 30 = 0
Now, we can factorize the quadratic expression:
(x - 5)(x - 6) = 0
Setting each factor equal to zero and solving for x:
x - 5 = 0 or x - 6 = 0
x = 5 or x = 6
So, the values of x for which the expressions x^2 - 10x + 31 and x + 1 are equal to each other are x = 5 and x = 6.
Answer:
To find the values of x for which the expressions x^2 - 10x + 31 and x + 1 are equal to each other, we can set them equal to each other and solve for x.
Setting x^2 - 10x + 31 equal to x + 1:
x^2 - 10x + 31 = x + 1
Rearranging the equation to standard quadratic form:
x^2 - 10x + 30 = 0
Now, we can factorize the quadratic expression:
(x - 5)(x - 6) = 0
Setting each factor equal to zero and solving for x:
x - 5 = 0 or x - 6 = 0
x = 5 or x = 6
So, the values of x for which the expressions x^2 - 10x + 31 and x + 1 are equal to each other are x = 5 and x = 6.
Answer:
x = 5 or x = 6
Step-by-step explanation:
Given expressions:
\(\begin{cases}x^2-10x+31\\x+1\end{cases}\)
To find the values of x for which the given expressions are equal to each other, first set the expressions equal to each other and rearrange so that we have a quadratic equal to zero:
\(\begin{aligned}x^2-10x+31&=x+1\\x^2-10x+31-x&=x+1-x\\x^2-11x+31&=1\\x^2-11x+31-1&=1-1\\x^2-11x+30&=0\end{aligned}\)
Factor the quadratic:
\(\begin{aligned}x^2-11x+30&=0\\x^2-6x-5x+30&=0\\x(x-6)-5(x-6)&=0\\(x-5)(x-6)&=0\end{aligned}\)
Using the zero-product property, set each factor equal to zero and solve for x:
\(\begin{aligned}x-5=0 \implies x&=5\\x-6=0 \implies x&=6\\\end{aligned}\)
Therefore, the values of x that make the given expressions equal to each other are x = 5 or x = 6.
Answer:
x = 5 or x = 6
Step-by-step explanation:
Given expressions:
\(\begin{cases}x^2-10x+31\\x+1\end{cases}\)
To find the values of x for which the given expressions are equal to each other, first set the expressions equal to each other and rearrange so that we have a quadratic equal to zero:
\(\begin{aligned}x^2-10x+31&=x+1\\x^2-10x+31-x&=x+1-x\\x^2-11x+31&=1\\x^2-11x+31-1&=1-1\\x^2-11x+30&=0\end{aligned}\)
Factor the quadratic:
\(\begin{aligned}x^2-11x+30&=0\\x^2-6x-5x+30&=0\\x(x-6)-5(x-6)&=0\\(x-5)(x-6)&=0\end{aligned}\)
Using the zero-product property, set each factor equal to zero and solve for x:
\(\begin{aligned}x-5=0 \implies x&=5\\x-6=0 \implies x&=6\\\end{aligned}\)
Therefore, the values of x that make the given expressions equal to each other are x = 5 or x = 6.
a³+1+2a²+2a,a³-1 and a⁴+a²+1 LCM SOLVE
Answer:
Below in bold.
Step-by-step explanation:
a³+1+2a²+2a = (a + 1)(a^2 + a + 1)
a^3 - 1 = (a - 1)(a^2 + a + 1)
a^4 + a^2 + 1) = (a^2 - a + 1)(a^2 + a + 1)
So the LCM is (a + 1)(a - 1) (a^2 - a + 1)(a^2 + a + 1).
What is the cos A?Will give 15 points.
Answer:
Step-by-step explanation:
cos A = \(\frac{\sqrt{8} }{3}\)
(-7) (2) (-2) as multiplication
Answer:
28
Step-by-step explanation:
-7*2=-14*-2=28
A line goes through the point (−4, 1) and goes through the origin. Which of the following is the correct equation of the line?
y= -4x
y= 4x
y= -1/4x
y= -1/4x+1
y= x-4
you are sent to the local tea shop to pick up 9 drinks. You purchase 3 sweet teas and 6 unsweetened teas. Unfortunately, you forgot to label them. If you pick 3 drinks at random, find the probability of each event below. Give your answers as simplified fractions.
The probability of the four events are: Event 1: 1/84Event 2: 3/14Event 3: 15/28 Event 4: 5/21
The total number of drinks = 9The number of sweet teas = 3The number of unsweetened teas = 6If you select 3 drinks at random, the following events can take place:
Event 1: All three drinks are sweet teas. The probability of event 1 = (Number of ways in which all three drinks can be sweet teas) / (Number of ways to select 3 drinks)The number of ways in which all three drinks can be sweet teas = 3C3 = 1 (because all three sweet teas are already fixed)The number of ways to select 3 drinks = 9C3 = (9 × 8 × 7)/(3 × 2 × 1) = 84Therefore, the probability of event 1 = 1/84 = 1/84
Event 2: Exactly two drinks are sweet teas. The probability of event 2 = (Number of ways in which two drinks are sweet teas and one is an unsweetened tea) / (Number of ways to select 3 drinks)The number of ways in which two drinks are sweet teas and one is an unsweetened tea = (3C2 × 6C1) = 18 (because you can choose 2 sweet teas from 3 and 1 unsweetened tea from 6)The number of ways to select 3 drinks = 9C3 = (9 × 8 × 7)/(3 × 2 × 1) = 84Therefore, the probability of event 2 = 18/84 = 3/14
Event 3: Exactly one drink is a sweet tea. The probability of event 3 = (Number of ways in which one drink is a sweet tea and the other two are unsweetened teas) / (Number of ways to select 3 drinks)The number of ways in which one drink is a sweet tea and the other two are unsweetened teas = (3C1 × 6C2) = 45 (because you can choose 1 sweet tea from 3 and 2 unsweetened teas from 6)The number of ways to select 3 drinks = 9C3 = (9 × 8 × 7)/(3 × 2 × 1) = 84Therefore, the probability of event 3 = 45/84 = 15/28
Event 4: All three drinks are unsweetened teas. The probability of event 4 = (Number of ways in which all three drinks can be unsweetened teas) / (Number of ways to select 3 drinks)The number of ways in which all three drinks can be unsweetened teas = 6C3 = 20 (because you can choose 3 unsweetened teas from 6)The number of ways to select 3 drinks = 9C3 = (9 × 8 × 7)/(3 × 2 × 1) = 84 Therefore, the probability of event 4 = 20/84 = 5/21
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The data below give the ages of a random sample of 13 students. Calculate the percentile rank of 26 and 43.
Round solutions to one decimal place, if necessary.
The percentile ranks of 26 and 43 are given as follows:
26: 30.8%.43: 53.8%.How to obtain the percentile rank?A measure is said to be in the xth percentile of the data-set if it the bottom separator of the bottom x% of measures of the data-set and the top (100 - x)% of measures, that is, it is greater than x% of the measures of the data-set.
From the 13 elements, we have that:
26 is the 4th smallest element.43 is the 7th smallest element.Hence the percentile rank of each measure is given as follows:
26: 4/13 x 100% = 30.8%.43: 7/13 x 100% = 53.8%.More can be learned about percentiles at brainly.com/question/22040152
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Which of these sets of angle measures could be the three angles in a triangle?
(PLEASE HELP ASAP I WILL GIVE BRAINLIEST!!)
Can you explain to me how did we get the answer
The end behavior of the polynomials are as follows;
(a) y = x³ - 9·x² + 8·x - 14
End behavior; y → ∞ as x → ∞
\({}\) y → -∞ as x → -∞
(b) y = -8·x⁴ + 13·x + 800
End behavior; y → -∞ as x → -∞
\({}\) y → -∞ as x → ∞
What is the end behavior of a a polynomial?The end behavior of a polynomial is the characteristics of the graph of the polynomial as the input (x-values), tends to plus and minus infinity.
The factors that effect the end behavior of a polynomial are;
The degree of the polynomial, (even or odd)
The sign of the leading coefficient of the polynomial (positive or negative)
The leading coefficient is the coefficient of the term with the highest degree.
(a) The polynomial, function, y = x³ - 9·x² + 8·x - 14
The specified polynomial is a third degree polynomial, with a positive leading coefficient of 1, the end behavior is therefore;
y tends to positive infinity as x tends to positive infinity
y tends to negative infinity as x tends to negative infinity
End behavior;
y → ∞ as x → ∞
y → -∞ as x → -∞
(b) The polynomial function can be expressed as follows;
y = -8·x⁴ + 13·x + 800
The above polynomial of degree 4 is an even degree polynomial
The leading coefficient of the polynomial is -8, therefore, the leading coefficient is negative
The shape of the graph of the polynomial is therefore ∩ shaped, such that the end behavior is as follows;
y-values approaches negative infinity as x approaches negative infinity
y-values approaches negative infinity as x approaches positive infinity
End behavior;
y → -∞ as x → -∞
y → -∞ as x → ∞
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Write as a unit rate 44 point in 4 quarters
Answer: 11 points per quarter
Step-by-step explanation:
To find the Unit rate of 44 points in 4 quarters.
It is given that in 4 quarters there are 44 points
so we will divide 44 points by 4 quarters to get how many points are there in 1 quarter.
the unit rate = 44/4 = 11 points
There are 11 points in 1 quarter.