Answer: 187
Step-by-step explanation:
Given
Dimension of stone is [tex]1\ m\times 80\ cm[/tex]
Dimension of compound [tex]13.6\ m\times 11\ m[/tex]
Area of the stone
[tex]\Rightarrow a=1\times 0.8=0.8\ m^2[/tex]
Area of compound
[tex]\Rightarrow A=13.6\times 11=149.6\ m^2[/tex]
No of the stones needed is
[tex]\Rightarrow n=\dfrac{A}{a}\\\\\Rightarrow n=\dfrac{149.6}{0.8}\\\\\Rightarrow n=187[/tex]
Thus, 187 stones are needed
What is the surface area of the right cone below?
Answer:
176π [tex]units^{2}[/tex]
Step-by-step explanation:
SA = B + LA where B is the area of the base (circle) and LA is the lateral area
LA = radius of the circle times the slant height
= 8π(14) = 112π
B = [tex]8^{2} \pi[/tex] = 64π
SA = 112π + 64π = 176π
The surface area of the right cone is 176π square units.
How to calculate the surface area of a composite figure?
Surface area are derived for some standard shapes like circle, triangle, parallelogram, rectangle, trapezoid, cone etc.
When some shape comes which isn't standard figure, then we find its area by slicing it (virtually, like by drawing lines) in standard shapes. Then we calculate those composing shapes' area and sum them all.
Thus, we have:
[tex]\text{Area of composite figure} = \sum (\text{Area of composing figures})[/tex]
That ∑ sign shows "sum"
We are given that;
The surface area of a right cone is given by the formula:
Surface area=πr(r+l)
where r is the radius of the base and l is the slant height of the cone12.
In this case, r=8 and l=14, so we can plug these values into the formula and simplify:
Surface area=π×8(8+14)
Surface area=π×8×22
Surface area=176π
Therefore, the surface area will be 176π square units.
Learn more about area of a composite figure here:
https://brainly.com/question/10254615
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Given the definitions of f(x) and g(x) below, find the value of g(f(-1)).
f(x) = -4x – 7
g(x) = x² + 7x – 2
Answer:
-14
Step-by-step explanation:
[tex]f(x) = -4x – 7 \\ plug \: x = - 1 \\ f( - 1) = - 4( - 1) - 7 = 4 - 7 = - 3 \\g(x) = x² + 7x – 2 \\g(f( - 1)) = {( - 3)}^{2} + 7( - 3) - 2 \\ = 9 - 21 - 2 \\= - 14[/tex]
The coordinates of D are
Answer:
The coordinates of D are -1,0
Step-by-step explanation:
I believe
Guys please last one ok
Answer:
last one, 4th
i really hope it helps.
Can you hellllllllllllllpppppppppp
Answer: ( 1.5, -3)
Step-by-step explanation:
You need to just look at the x and y axis and you see that the x axis is at 1.5 and the y axis is at -3.
I need help like NOW
Answer:
386
Step-by-step explanation:
:)
GEOMETRY
please Help
Answer:
A right circular cone
Step-by-step explanation:
need you to check if answer is correct
What is the area of KLM?
Answer:
A. 1,170 cm^2
Step-by-step explanation:
Answer:
The answer is A
Approximately what is the sale price of a skateboard listed at $159.69 with a 25% discount?
Answer:
159.69*0.75 = 119.76
Step-by-step explanation:
Cause we have a 25% discount, that means that the skatebord costs 75% of its original price.
The 75% of the original price is the 75/100 part (0.75)
Which of the following statements is not true?
A) -3 divided by -8 is a positive number
B) - 2/8 = 3/-8
C) -1/2(5+3/8)= (-1/2)(5) + (-1/2)(3/8)
D) (-4)(-2/5)(0.5) is a positive number
Answer:
The right answer would be C!
[tex]\boxed {\boxed {prove : \: 3 \: is \: greater \: than \: 5 }} [/tex]
3 has more letters than 5. Hence 3 is greater than 5
A block of wood has the shape of a triangular prism. The bases
are right triangles. Find its surface area.
Answer:
287.25 sq in
Step-by-step explanation:
Three students, Matthew, Thompson and Amos shared #15000 in the ratio of 5:2:x respectively. If Matthew's share is 7500, calculate the value of x.
Answer:
The value of x is 3.
Step-by-step explanation:
Matthew earned 7500 of 15000, that is, 1/2.
Rate of 5:2:x, with number 5 corresponding to Matthew, mean that his fraction of the earnings is given by:
[tex]\frac{5}{5 + 2 + x} = \frac{5}{7 + x}[/tex]
Since he earned 1/2 of the total:
We have that 5/(7+x) = 1/2. So we use this to find x.
[tex]\frac{5}{7 + x} = \frac{1}{2}[/tex]
Applying cross multiplication:
[tex]7 + x = 10[/tex]
[tex]x = 10 - 7[/tex]
[tex]x = 3[/tex]
The value of x is 3.
a)How many similar figures can be drawn inside the following figures?
Find the limit of area and perimeter
Jessica's bedroom is 17 feet long and 9 1/2 feet wide. What is the area of the bedroom?
Which list of numbers is ordered from from greatest to least?
Answer:
A
Step-by-step explanation:
PLS HELP WITH NUMBER 6
Answer: The answer to this question is A
Find the area of a circle with diameter 16 yd.
Use the value 3.14 for it, and do not round your answer.
Be sure to include the correct unit in your answer.
Answer:
200.96
Step-by-step explanation:
pi*r^2
Help me with 6 and 7
Answer:
6 b 7 d give me brainlest
Step-by-step explanation:
The ratio of A's to B's on the last test was 3 to 4. If there was 12 A's . how maby B's were there?
Answer:
16 B's
Step-by-step explanation:
If you know there are 3/4 A's/B's,
and that there are 12 A's,
you can set up a proportion:
3 12
-- = --
4 x
cross multiplication gets you:
48 = 3x
solve for x.
x = 16
DE is a midsegment of ABC . Find the value of x.
Answer:
if from a to e is 6 un, then x maybe 6 un as well
Step-by-step explanation:
The perimeter of a triangle is 29. One side of a triangle is 5 less than twice the side of the shortest length. The third side is 6 more than the shortest side. What are the lengths of the triangle?
Answer:
7, 9, 13Step-by-step explanation:
Let the sides of the triangle be a, b and c.
We have:
P = a + b + c = 29a = 2b - 5c = b + 6Substitute values and solve for b:
2b - 5 + b + b + 6 = 294b + 1 = 294b = 28b = 7Find a and c:
a = 2*7 - 5 = 14 - 5 = 9c = 7 + 6 = 13The sides are: 7, 9, 13
Please help me 7th math
Answer:
1/12
Step-by-step explanation:
Answer:
cdcsvcd
Step-by-step explanation:
LOOK AT IMAGES I MARK BRAINLIEST
Answer:
B
Step-by-step explanation:
Which side lengths form a right triangle?
The data below are the ages and systolic blood pressures (measured in millimeters of mercury) of 9 randomly selected adults. Age 38 41 45 48 51 53 57 61 65 Pressure 116 120 123 131 142 145 148 150 152 What is the best predicted value for blood pressure of an individual who is 64 years old
Answer:
156
Step-by-step explanation:
Given the data:
Age (X) :
38
41
45
48
51
53
57
61
65
Pressure(Y) :
116
120
123
131
142
145
148
150
152
From the data, we could obtain a regression equation to mod the data Given using a linear regression calculator :
The regression equation obtained is :
y = 1.48769X + 60.46103
Using the model, the predicted blood pressure for a person aged 64 will be :
y = 1.48769(64) + 60.46103
y = 95.21216 + 60.46103
y = 155.67319
y = 156 (nearest whole number)
Plz help this if you want points
Answer:
First Question:
A) -15+20x B) 36x+28
Second Question:
-10/5, 1/25, 1/2, 3/5, 5/8
A solid figure is composed of a cube and a pyramid as shown. What is the volume
Answer:
288 in^3
Step-by-step explanation:
1) find the volume of the cube
V = side^3 = 6^3 = 216 in^3
2) find the base surface of the pyramid:
base surface = side^2 = 6^2 = 36 in^2
3) find the height of the pyramid:
height of the solid - height of the cube = 12 - 6 = 6 in
4) find the volume of the pyramid:
V = (base area x height) / 3 = (36 x 6)/3 = 72 in^3
5) add up the two volumes
V = 216 + 72 = 288 in^3
Evaluate each expression if x = 3.
a. 2^x
b. x^2
c. 1^x
d. x^1
e. (1/2)^x
Answer:
a) 2³ = 2×2×2×=8
b) 3²=3×3=9
c) 1³=1×1×1=1
d) 3¹=3
e) 1/2³=1/2×1/2×1/2=1/8