PLEASE HELP ! 12 POINTs!
ABCD is a trapezium
Calculate the perimeter of the trapezium
Give your answer correct to 3 significant figures
Answers
Answer:
Perimeter = 101.496 cm
Step-by-step explanation:
draw line from point C that is perpendicular to line AD. Call that point E.
tan 43° = 16.7/ED
0.9325 = 16.7/ED
ED = 17.909 cm
sin 43° = 16.7/CD
0.6820 = 16.7/CD
CD = 24.487 cm
Perimeter = AB + BC + CD + ED + AE
Perimeter = 16.7 + 21.2 + 24.487 + 17.909 + 21.2 = 101.496 cm
Related Questions
Graph the equation y + 4 = .
Answers
Answer:
just go to Desmos graphing calculators
Step-by-step explanation:
and that all
first person to answer all of these questions gets brainliest, also upping points to 50
Answers
Answer:
#1
Ratio of 45-45 and 30-60-90 triangles
45-45
a : b : c = 1 : 1 : √230-60-90
a : b : c = 1 : √3 : 2a)
b = 10/2 = 5a = 5√3b)
k = l = 6√2/√2 = 6#2
Find x
7/x = cos 66°x = 7/ cos 66°x = 17.2Find y
y/x = sin 66°y = 17.2 sin 66°y = 15.7#3
a) sin A = 5/13
b) cos A = 12/13
c) tan A = 5/12
d) A = arcsin (5/13) = arccos (12/13) = arctan (5/12) = 22.6°
will mark brainliest and mark 5/5
Answers
9514 1404 393
Answer:
AY = 4.8YD = 2.4Step-by-step explanation:
Corresponding sides of the triangles are ...
ΔFUN . . . ΔDAY
UF = 10 . . . AD = 6
FN = 4 . . . DY
NU = 8 . . . YA
Corresponding sides are proportional, so we have ...
DY/4 = AD/UF = 6/10
DY = 4(0.6) = 2.4
and
YA/8 = 6/10
YA = 8(0.6) = 4.8
The side lengths are ...
AY = 4.8, YD = 2.4
Answer:
.
Step-by-step explanation:
Calculate the area of these shapes. Answer correct to one decimal place:
Working out is needed
Answers
c) 25 X π / 2 ≈ 39.3, d) 16 X π / 4 ≈ 12.6, b) 100 X π / 4 X 3 ≈ 235.6
what is the answer to x - 4 = -2
Answers
Answer: x=2
Step-by-step explanation: add 4 to both sides of the equation.
Question and answer options attached. Please help, thanks!
Answers
Answer:
there is no question but i think out of a,b,c and e i think b or c
Step-by-step explanation:
sorry
Do not factor by grouping. Solve 2(x-2)^1/3=x+2
Answers
Step-by-step explanation:
2(x-2)⅓=x+2
so we first cube each side,such that...
(2(x-2))⅓•³=(x+2)³
we get...
2(x-2)=(x+2)³
expanding...
2x-4=x³+6x²+12x+8
grouping....
x³+6x²+12x+8-2x+4=0
solving...
x³+6x²+10x+12=0
now you can use you calculator to solve for the possible values of x
I hope this will help
While shopping Marcy spent $59. If the amount she spent is 25% of her savings, how much savings did she have before she shopped
Answers
Answer:
Savings= $236
Step-by-step explanation:
Giving the following information:
Money spent= $59
Proportion of savings= 25% = 0.25
To calculate the total savings before shopping, we need to use the following formula:
Savings= money spent / proportion of savings
Savings= 59 / 0.25
Savings= $236
a girl 2.2m tall observes that the angle of elevation of the top of a building 16m away from her is 45° find the height of the building
Answers
Answer:
18.2 m = height of the building
Step-by-step explanation:
Let x = the distance from the top of the girl's head to the top of the building
tan 45 = x/16
x = 16 tan 45
x = 16 m
16 + 2.2 = 18.2 m = height of the building
hi please help i’ll give brainliest please
Answers
Answer:
45
Step-by-step explanation:
The answer would be 45
Error Analysis - Describe and correct the error a student made when multiplying two
binomials.
(2x + 2) (4x - 1)
8x ² - 2
Answers
Answer:
The correct answer is:
Error made: The student multiplied only corresponding terms in each bracket with each other
Correction: Each term in one bracket is to be multiplied with every term in the next bracket
Step-by-step explanation:
The student paired the terms in the brackets into like terms and multiplied the like terms like this:
(2x + 2) × (4x - 1)
collecting like terms: (2x, 4x) (2, -1)
(2x × 4x) (2 × (-1)) = 8x² - 2.
The above is the wrong way of expanding the bracket. The correct way of doing it is as follows:
(2x + 2) (4x - 1)
Each term in one bracket multiplies each term in the second bracket.
= 2x (4x - 1) + 2(4x -1)
= 8x² - 2x + 8x - 2
= 8x² + 6x - 2
help ASAP ill mark brainliest. The answers are the 4 other images attached
Answers
Answer:
Step-by-step explanation:
The can find this my matching each number of the chart with each diagram
It can't be the first one because the 17-19 isn't on 8, it is on 4
It can't be the second one because the 20-22 isn't on 7, it is on 9
It is the third one because all the number on the chart is matching with the numbers on the diagram
It can't be the fourth one because the 17-19 isn't on 8, it is on 4
if the income tax rate is 4%, determine the amount of income tax paid on income of $20,000.
Answers
Answer: $800.
Step-by-step explanation:
To find the income tax of $20,000 simply multiply 20,000 by the decimal of 4%.
20,000 x 0.04 = 800
Can someone please help me with this find the unit rate of these 2 items cost per item which is these 2 bag of chips set it up please and show work I’ll mark brainliest
Answers
Can someone help me
Answers
Answer:
Step-by-step explanation:
can you help me. What is 2x-14
Answers
Answer: 2(x-7)
Step-by-step explanation: 2x−14
2x−14
=2(x−7)
Answer:
-8
Step-by-step explanation:
so first start off by doing 2x(-14)
this will get us to our answer -8.
It's pretty easy, try using a calculator to help if needed.
☺️
Lucas is making 12 jumbo muffins to sell at his class bake sale . He has 2 bowls full of batter what fraction of a bowl of batter should Lucas put in each muffin cup ?
Answers
Answer:
1/6 of a bowl of batter
Step-by-step explanation:
Find out how much muffins is needed for 1 bowl.
2 bowls = 12 muffins
1 bowl = 12 ÷ 2 = 6 muffins
Since 1 bowl can fill 6 muffins, it's 1/6
Can 3 over 11/2 and 6 over 11 be a proportion?? Please explain!!! ASAP
Answers
Answer:
Yes! these are in the same proportion
Step-by-step explanation:
Lhs = 3 over 11/2 = 3/(11/2)
=>3× (2/11)
=> 6/11
=> Rhs
The area if a rectangular frame is 32 square inches. The perimeter of the frame is 24 inches. Which shows the correct dimensions of the frame?
Answers
Answer:
8 x 4
Step-by-step explanation:
Lets say the length is x and the width is y.
xy = 32
2x + 2y = 24
Rearranging the second equation, we get:
2x = 24 - 2y
/2 /2
x = 12 - y
substitute into the first equation
y(12 - y) = 32
12y - y^2 = 32
-32 -32
-y^2 +12y - 32 = 0
x -1 x -1
y^2 - 12y + 32 = 0
(y - 8)(y - 4) = 0
y = 8 or 4
substitute into x = 12 - y.
x = 12 - 8 = 4
x = 12 -4 = 8
so the correct dimensions are 4 x 8, as either x = 4 and y =8, or x = 8 and y = 4.
Hope I helped!
Translate this phrase into an algebraic expression. Eight more than the product of 8 and a number Use the variable n to represent the unknown number.
Answers
Answer:
8n + 8
Step-by-step explanation:
We already know that n is the unknown number. Product means multiplying, so you multiply 8 by the unknown number. More than means adding, so you add 8 to the product of 8n.
Mar 12, 9:04:40 PM
Find the length of side x in simplest radical form with a rational denominator.
Answers
Answer:
x=sqrt(5/2)
Step-by-step explanation:
5/9 if a number is 65 find the number
Answers
Answer:
117
Step-by-step explanation:
Required number
[tex] = 65 \times \frac{9}{5} \\ \\ = 13 \times 9 \\ \\ = 117[/tex]
For the Celsius temperature given, determine the corresponding Fahrenheit temperature. Use the formula t℃=(32+1.8t)℉ for any rational number t. what is the answer
Answers
Answer:
50°F
Step-by-step explanation:
Given the equivalent celcius and Fahrenheit temperature relation :
t℃=(32+1.8t)℉
t = any rational number :
Taking a rational number, t = 10
The Fahrenheit temperature obtained will be :
t°C = 10
t℃=[32+1.8(10)] ℉
10°°C = (32 + 18)°F
The equivalent Fahrenheit temperature = 50°F
What is the experimental probability that a coin toss results in two heads showing?
Answers
Answer:
you have a 0.25 chance
Step-by-step explanation:
Each coin has a 0.5 so to get two on heads is 0.25 sorry I don't have time for a detailed reason
How many sides does the thirtieth figure have?
Answers
Answer:
8.
Step-by-step explanation:
multiples of 3 for every shape.
step by step:
first 3 have 3 sides (3 shapes)
second set of 3 have 4 sides (6 shapes)
the next set has 5 (9 shapes)
the next set has 6 (12 shapes)
the next set has 7 (the 13th shape would be in this set)
What is a reason to include the image of a setting sun in this advertisement? a to provide more color to the advertisement b to make the sale more appealing to shoppers c to add something interesting to the ad d to reinforce the idea that the season is ending
Answers
Answer:
The reason is to allow others to explore and have an image to reference to.
Step-by-step explanation:
Answer:
B, to make the ad more appealing
A music store bought a CD set at a cost of $.10 When the store sold the CD set, the percent markup was %20. Find the selling price.
Answers
Answer:
$12
Step-by-step explanation:
$10 is 100% of the price
The selling price is 120% of the price
x= selling price
10 -------------100%
x ----------------120 %
Cross multiplication
10x120 = 100x
1200 = 100x
Divide both sides by 100
12 = x
Selling price = $12
[tex] \sqrt{4. \sqrt{9} } [/tex]
Answers
Answer:
[tex]2 \sqrt{3} [/tex]
Step-by-step explanation:
1) Since 3 × 3 is 9, the square root of 9 is 3.
[tex] \sqrt{4 \times 3} [/tex]
2) Simplify 4 × 3 to 12.
[tex] \sqrt{12} [/tex]
3) Simplify
[tex] \sqrt{12} \: \: to \: 2 \sqrt{3} [/tex]
[tex]2 \sqrt{3} [/tex]
When solving for x in a one-variable equation, there can be one solution, no solution, or infinitely many solutions. In complete sentences, explain whether this statement is true or false, and why.
Answers
A 50.0 gram sample decays to 25 grams in 14.4 seconds. What is its half-life?
Answers
Answer:
The half life is 14.4 seconds because the half life is the time it takes for half of a sample to decay.
Hope this helps!