Please help me. Noura is redecorating her house. She needs to work out the area of the wall around her triangular window in order
to find out how much paint she
needs.
a) Calculate the area of the wall
she needs to paint, to a suitable level
of accuracy, explain your answer.
b) Paint is sold in 20 litres containers,
costing $21.99 per container. Use
your answer from part (a) to
calculate and explain how much it
will cost to paint the wall. Assume 1
litre of paint covers 1m2 *
Answers
Answer:
a. 277.3 m²
b. $307.86
Step-by-step explanation:
a. Area of the wall to be painted = area of rectangle - area of triangle
= L × W + ½×a×b×sin θ
L = 17 m
W = 14 m
a = 8.7 m
b = 9.5 m
θ = 72°
Plug in the values into the equation
Area of the wall = (17×14) + (½*8.7×9.5×sin 72)
Area of the wall = 238 + 39.3024105
Area of the wall to paint ≈ 277.3 m²
b. 20 liters of paint of 1 container cost $21.99
If 1 liter of paint covers 1m², therefore,
277.3 m² will need = 277.3 × 1 = 277.3 liters of paint.
20 liters = 1 container of paint
277.3 liters = 277.3/20 = 13.865 ≈ 14 containers
1 container = $21.99
14 containers = 21.99 × 14 = $307.86
Related Questions
Find the area of the shape shown below.
2
2
2
2
2
units2
Answers
Answer:
the area is 32
Step-by-step explanation: 2 x 2 x 2 x 2 x 2= 32
if point C is the centroid of triangle RST and SD = 21, find SC. show your work.
Answers
Answer:
SC = 14Step-by-step explanation:
Point C is the centroid.
Property of centroid: the medians are divided in 2:1 ratio from the vertices.
SD = 21SC = 2/3*21 = 14Answer:
SC = 14 units
Explanation:
Centroid of a triangle refers to the point where it's 3 median intersect. It's the centre point of the triangle.
the point of intersection divides all three median into two parts. the parts are in ratio 2 : 1. The part of the median starting from the vertex to the midpoint is 2/3rd of the median.
SD = 21
SC = 2/3 of 21
= 2/3 × 21
= 14
1/10+10/12= Any help would be apreciated right now!
Answers
Answer:
I got the answer 14/15 or 0.93333
Step-by-step explanation:
If I'm wrong plz tell, thx
I need help on this question
Answers
Answer:
a = 62.5
b = 40
c =62.5
d = 70
Together teammates Pedro and Ricky got 2671 base hits last season Pedro had 275 more hits Ricky hits did each player have
Answers
Solve the equation. Solve the solution (-2 1/7) p = -3
A 1 2/5
B 6 3/7
C -1 2/4
D -6 3/7
Answers
Answer:
p = 1⅖
Step-by-step explanation:
Find the product. 7. $458.29 × 6.3% 8. $280.12 × 7.75%
Answers
Answer:
7. 28.8722
8. 21.7093
Step-by-step explanation:
458.29 x .063=28.8722
21.7093 x .0775= 21.7093
What is the asymptote for the function?
I tried to do it but I can’t
Answers
Answer:
Horizontal Asymptote → y = 17
Step-by-step explanation:
Given function is f(x) = [tex]\frac{2}{5}(16)^{x+13}+17[/tex]
Here, the parent function is g(x) = [tex]\frac{2}{5}(16)^x[/tex]
Parent function has a horizontal asymptote as y = 0
If the function g(x) is shifted 13 units left and 17 units up, new function will be f(x) = [tex]\frac{2}{5}(16)^{x+13}+17[/tex]
When the parent function is shifted 17 units up, horizontal asymptote shifts 17 units upwards.
Therefore, horizontal asymptote of the image function becomes y = 17.
The perimeter of an isosceles triangle is 12a + 8b
and the base is 2a - 4b. What is the length of
each side?
Answers
12a + 8b - 2a + 4b
10a + 12b
(10a + 12b)/2
5a + 6b
Help plz I’ll mark brainliest
Answers
3x+4y=10—2
Adding equation 1 and 2,
4x=20
x=5
Putting x in equation 2,
4y=-5
y=-5/4
Start at 2 Create a pattern that adds 2 to each number and then multiply by three. Stop when you have a five numbers
Answers
Answer:
2,12,42,132,402
Step-by-step explanation:
Answer:
2,4,12,36,108
Step-by-step explanation:
Someone help I will mark brainless please hurry
Answers
Answer:x=-7
Step-by-step explanation:
Answer:
In this problem you have to get rid of the 13 so you take the opposite of the number which is -13 and subtract it by 13 and when you do this you have to do the same thing on the other side so you would do 48-13 and that would give you get 35 so -5x=35. This is not the same because on B it says positive 5x, and on A it is negative 5x.
Step-by-step explanation:
Able is carving a rectangular pyramid clock out of green quartz. The length of the rectangle base is 14 cm and the height of the clock is 9cm. If the clock needs to have a volume of 168cm3 what is the width of the base
Answers
Answer:
14cm
Step-by-step explanation:
Volume of the pyramid = Base area × height/3
V = BH/3
Base area = 14×width
Height= 9cm
Volume = 168cm³
Substitute into the formula
168 = 4w×9/3
36w = 168×3
36w = 504
w = 14cm
Hence the width of the pyramid is 14cm
2.
Use substitution to find "y-2x + 5y = 5x - 16
Answers
Work out 5/9 x 8/11
Answers
Answer:
40/99
Step-by-step explanation:
Answer:
5/9×8/11
Step-by-step explanation:
40/99
Please help Please I can’t fail this test
Use elimination to solve the system
2x+y=-1
-3x+2y=12
(They are the same problem please help me please)
Answers
Answer:
(-2, 3)
Step-by-step explanation:
I believe (-2, 3)
if q= ut + ½ ft find q when u = 20, t= 10 and f= 13
Answers
Answer:
q=200+13×5=200+65=265
Each month, a shopkeeper spends 5x+17 dollars on rent and electricity. If she spends 3x-4 dollars on rent how much does she spend on electricity?
Answers
Answer:
2x-13
Step-by-step explanation:
5x-3x=2x
17-4=13
what is (-9 - 6 x 5) x 10 = ?
Answers
Answer:
-390 is your answer
Answer:
Step-by-step explanation:
PEDMAS - Parenthesis , Exponents , Division, Multiplication , Addition and subtraction.
(-9 - 6 *5) *10 = (-9 - 30) *10
= -39 *10
= -390
solve the equation for x
3/10x-2/5=-1
What does x equal?
Answers
Answer: -2
Step-by-step explanation:
3/10x -2/5= -1
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Given:
circumference of a circle = 11304 units.....
to find: diameter of the circle=2 x radius of the circle
2pi x r = 11304
=>r = 11304 x 7 /22 x 1/2
=>r = 1798 units...
hence,radius of the circle = 1798 units.....
therefore, diameter of the circle = 1798 x 2 = 3596 units......
Answer:
I think it is 3598.2 units
Mhanifa Please help find angle 1,2,3,4 and 5 thanks!
Answers
Answer:
1 = 2 ⇒ 1/2(180° - 55°) = 62.5° Isosceles triangle3 ⇒ 55° Vertical angles4 ⇒ 180° - 105° = 75° Exterior angle5 ⇒ 105° - 55° = 50° Exterior angleAnswer and Step-by-step explanation:
Hello!
To find the angles of this triangle, we would look at the markings and angle measurements that are already on the triangle.
We see on the top triangle that the sides are congruent. That means angle 1 and 2 are the same. To find those angles, we would subtract 55 from 180, then divide by 2.
180 - 55 = 125
125 ÷ 2 = 62.5
Angle 1: 62.5
Angle 2: 62.5
We see angle 3 is opposite of 55. These two angles are congruent by the vertical angles theorem.
Angle 3: 55
On the bottom left of the bottom triangle, we see the angle 105 that is supplementary to the angle 4. These angles are supplementary angles, in which they will add up to 180. To find angle 4, we subtract 105 from 180.
180 - 105 = 75
Angle 4: 75
We know that triangles' angles add up to 180, so to find angle 5, we subtract angle 3 and angle 4 from 180, and we can do this because of the Triangle Angle Sum Theorem.
180 - 55 - 75 = 50
Angle 5: 50
Angle 1: 62.5
Angle 2: 62.5
Angle 3: 55
Angle 4: 75
Angle 5: 50
#teamtrees #PAW (Plant And Water)
i need help with this please teacher didn’t bother to teach me this
Answers
please help me please i really need help please
Answers
Answer:
x= -6
y= -5
Step-by-step explanation:
(x,y) = (-6, -5)
Answer:
(-6,-5)
x=-6
y=-5
Step-by-step explanation:
9x-7y=-19
5x-3y=-15
When solving with elimination, you multiply both equations by a number to get two terms to cancel each other out.
We can try to get the y's to cancel out. The LCD of 7 and 3 is 21, so we multiply one equation by 3 and another by -7 (to get one -21y and one 21y)
{9x-7y=-19}*3=
27x-21y=-57
{5x-3y=-15}*(-7)=
-35x+21y=105
Now, we combine the two equations.
27x-21y=-57
-35x+21y=105
-8x=48
Now, solve for x.
-8x=48
x=-6
Now we can plug x into one of the original equations to get y.
I will use 9x-7y=-19.
9(-6)-7y=-19
-54-7y=-19
Add 54 to both sides.
-7y=35
y=-5
We can put these values into an ordered pair: (-6,-5).
It is possible to multiply a 3 X 5 matrix and a 3 X 5 matrix.
True
False
Answers
Answer: true
Step-by-step explanation:
*URGENT* THERE CAN BE MORE THAN 2
Answers
Answer:
12.50p+50.00 and 50(0.25p + 1.00)
im positive of both answers
The base of the following pyramid is a square. If the surface area of the pyramid is 896 in^2, what is it's volume? Side base length is 14 and distance to middle is 7.
Answers
Answer: 457.3
Step-by-step explanation:
[tex]V=\frac{lwh}{3}[/tex]
[tex]V=\frac{14*14*7}{3}[/tex]= 457.3
Answer:
V= 1568 in^3
Step-by-step explanation:
B = 14^2 = 196
896 = 14^2 + 2(14) (l)
896 = 196 + 28 (l)
700 = 281 l
25 = l
7^2 + b^2 = 25^2
49 = 625
24
1/3 (196)(24) = 1568
Which of the following is an integer? Select all correct answers.
Select all that apply:
496
−5
8
−10
293
7
Answers
Answer:
integers
-52, -17, -8, -4
0, 1, 2, 18, 72
There's no integers -_-
(づ￣ ³￣)づdon't worry Check it
What is the description of 2m+7
Answers
Answer:
two times a number (m) is increased by 7
Step-by-step explanation:
How can I get equation x+4=-12 from equation x/4+1=-3
Answers
Answer:
All terms of the equation were divided by 4.
Step-by-step explanation:
When we are given a equation, it is possible to multiply or divided all of the terms of the equation by a factor.
In this question:
We are given:
[tex]x + 4 = -12[/tex]
And end up with:
[tex]\frac{x}{4} + 1 = -3[/tex]
Which means that all terms of the equation were divided by 4.