Answer:
2.2 results in a true equation, 2.2 is a solution to the equation.
Step-by-step explanation:
Step 1. Substitute the number for the variable in the equation.
Step 2. Simplify the expressions on both sides of the equation.
Step 3. Determine whether the resulting equation is true.
If so, the number is a solution.
If not, the number is not a solution.
SOMEONE PLEASE HELP!
Figures 1 and 2 below show two polygonal regions used to approximate the area of the given shape. Find the average area, in square units, of the given shape using figures 1 and 2.
Answer:
figure 1 is 8.5 units^2 and figure 2 is 3 units^2 and the average are is 5.25 units^2
The overestimated area, the underestimated area, and the average area will be 8.5 units², 3 units², and 2.75 units², respectively.
What is an area?The area of a 2D form is the amount of space within its perimeter. It is measured in square units such as cm², m², and so on. To find the area of a square formula or another quadrilateral, multiply its length by its width.
Since the area is covered with either a square or a triangle. Therefore, we can write the area of this two as,
Area of a square = 1 unit × 1 unit = 1 unit²
Area of triangle = 0.5 × 1 unit × 1 unit = 0.5 units²
The overestimated area, the number of square and triangles are,
Number of square = 6
Number of triangle = 5
Total overestimated area = (6×1unit²) + (5×0.5unit²) = 8.5 unit²
The under estimated area, the number of square and triangles are,
Number of square = 2
Number of triangle = 2
Total Underestimated area = (2×1unit²) + (2×0.5unit²) = 3 unit²
Furthermore, the average area is,
Average area = (Total overestimated area - Total Underestimated area)/2
= (8.5 units² - 3 units²) / 2
= 5.5 units² / 2
= 2.75 units²
Hence, the overestimated area, the underestimated area, and the average area will be 8.5 units², 3 units², and 2.75 units², respectively.
Learn more about Area here:
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State if the triangle is acute, obtuse, or right
Answer:
right angle triangle
A total of 50,000 contestants are chosen for a survey. A
computer randomly eliminates 20% of the participants
each day.
Which function models the survey?
Answer:
you are correct do not say any other answer
Answer:
The answer is either
y=50000 x 0.8^x
or
y=50000(20%)^x but this just seems wrong
Step-by-step explanation:
If Triangle ABC~ triangle DEC, find the value of x and the scale factor from DEC to ABC
Answer:
see explanation
Step-by-step explanation:
The scale factor is the ratio of corresponding sides, image to original, that is
scale factor = [tex]\frac{AC}{DC}[/tex] = [tex]\frac{25}{20}[/tex] = [tex]\frac{5}{4}[/tex]
Then
[tex]\frac{AB}{DE}[/tex] = [tex]\frac{3x-2}{2x}[/tex] = [tex]\frac{5}{4}[/tex] ( cross- multiply )
4(3x - 2) = 10x
12x - 8 = 10x ( subtract 10x from both sides )
2x - 8 = 0 ( add 8 to both sides )
2x = 8 ( divide both sides by 2 )
x = 4
Please help!
(2/5x +5) - (1/5x - 3)
Answer:
2x over 5 + 8 + -x over 5
Step-by-step explanation:
I dont know if this is what youre looking for but hope it helps!
Answer:
1/5x + 8
Step-by-step explanation:
Let's simplify step-by-step.
2/5x + 5 − (1/5x − 3)
Distribute the Negative Sign:
= 2/5x + 5 + −1( 1/5x −3)
= 2/5x + 5 + −1 (1/5x) + (−1) (−3)
= 2/5x + 5 + −1/5x + 3
Combine Like Terms:
= 2/5x + 5 + −1/5x + 3 = (2/5x + −1/5x) + (5 + 3)
= 1/5x + 8
Answer:
= 1/5x + 8
hope this helps. p.s. i really need brainliest :)
TOURS The table shows the activities of two visitors at a park. You want to take the boat tour for 2 hours and the walking tour for 3 hours. Can you determine how much you will pay? Explain.
Answer:
Step-by-step explanation:
15 is 20% of what number? Enter your answer in the box.
Answer:
75
Step-by-step explanation:
What percent of 54 is 28?
52%
192%
19%
0.52%
?
Answer:
52%
happy to hep ya :)
Step-by-step explanation:
24 college students were hired as ushers for a concert. This is 30% of the students who applied for the job. How many college students applied to be ushers
Answer:
80 students applied
Explanation:
24 ÷ 30 × 100
= 0.8 × 100
= 80
i hope this helps! :D do comment if you need any clarification.
Answer:
80 students
Step-by-step explanation:
if 30%=24
100%=?
100%/30%*24
=80
Eight years ago, Manny was 4 years old. Let m equal Manny's age now. Circle every equation that shows Manny's age now.
Answer:
4+8=M or 4+8=12 or just 12
Step-by-step explanation:
there isnt anything to circle so but since he was 4, 8 years ago, you would add 4 and 8.
quick test 2+2x68(8)=y
2176
Step-by-step explanation:
2+2=4 68(8)= 544
4× 68×8= 2176
Algebraic form of an arithmetic sequence is 3/7n+1. What is
the first integer term of this sequence?
Answer:
First term = 10/7
Step-by-step explanation:
Given:
n term of arithmetic sequence = 3/7(n)+1
Find:
First term
Computation:
First term n = 1
So,
3/7(n)+1
3/7(1)+1
3/7 + 1
First term = 10/7
I really need help!!!!
Answer:
No
Step-by-step explanation:
You can't use the perpendicular bisector theorem because it doesn't intersect it at a right angle, (meaning it isn't perpendicular)
if B is the midpoint of AC, and AB = 12 cm. How long is segment BC? A 12 cm B
Answer:
6
Step-by-step explanation:
because if B is the mid point of AC And ab is 12 cm If we divide 12 by 2 it'll be 6..but I'm not sure sorry
What is the equation of the line that goes through the points (4,-1) and
(2,3)?
Answer:
y = -2x + 7
Explanation:
y = mx + b
m = slope
b = y-intercept
y = a given y coordinate
x = a corresponding x coordinate
First, we need to find the slope (m).
1) (4, -1)
2) (2/3)
m = slope = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] = [tex]\frac{3-(-1)}{2-4}[/tex] = [tex]\frac{4}{-2}[/tex] = -2
plug in the values to the equation y = mx + b
-1 = -2(4) + b
-1 = -8 + b
7 = b
now, we can substitute in m and b into the equation y = mx + b
y = -2x + 7
please also answer this one rlly fast!!
Answer:
4
Step-by-step explanation:
1 ÷ 0.25 = 4
What is the perimeter of the composite figure?
Enter your answer in the box.
perimeter = yd
Answer:
what
Step-by-step explanation:
for your answer of this question
perimeter =sum of all side.
sorry I am unable to find perimeter without figure.
halp me pleaze................
Find area of circle circumference or area
Answer:
closest option B (50.24)
Step-by-step explanation:
A=πr²
= π×4×4
=π×16
=50.265m²
Area:
50.24 m^2
Explanation:
The formula for the area of a circle is A = πr²,
where:
A = area, r = radiusDiagram:
[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\qbezier(2.3,0)(2.121,2.121)(0,2.3)\qbezier(-2.3,0)(-2.121,2.121)(0,2.3)\qbezier(-2.3,0)(-2.121,-2.121)(0,-2.3)\qbezier(2.3,0)(2.121,-2.121)(-0,-2.3)\put(0,0){\line(1,0){2.3}}\put(0.5,0.3){\bf\large 4\ m}\end{picture}[/tex]
Plug in the data. I'll use 3.14 for pi.
[tex]\bf{A=\pi \times4^2}\\\bf{A=3.14\times16}\\\bf{A=50.24\:m^2}[/tex]
Hence, area = 50.24 m^2
Determine which of the graphs represent the proportional relationships. Circle the appropriate response.
If x • y = z, which of the following statements is true?
z/y=x
x/z=y
I need the right answer I'm on the last attempt plz
When graphing the inequality y > 3x + 4, you will use a solid line iristead of a dotted line-
O True
O False
Answer:
true
Step-by-step explanation:
May someone please help me with this :)
I NEED HELP PLEASE !!
Answer:
all 3 sides are the same length
which graph represents the function
Question 3 (1 point) A right triangle has a leg length of 21 and a hypotenuse of 75. Find the missing leg.
Answer:
72
Step-by-step explanation:
Given that :
Triangle is right angled ;
Leg length = 21 ; hypotenus = 75 ; Length of missing leg =?
From Pythagoras :
Length of leg 2 = sqrt[(hypotenus )² - (length of leg1)²]
Let length of leg 2 = x
x = sqrt[(75 ² - 21²)]
x = sqrt(5625 - 441)
x = sqrt(5184)
x = 72
A right triangle has a leg length of 21 and a hypotenuse of 75. Find the missing leg.
Please help I will give brainliest
Answer:
Step-by-step explanation:
I have 20 lemons. I cut each of them into halves and then cut THOSE halves into some more halves. How many HALVES do I have in all?
Answer:
80
Step-by-step explanation:
If you have 20 lemons then you half them, you can 40 halves, then after you half those haves you get 80.
The lemons are cut to get the total pieces of 80.
What is fraction?An element of a whole is a fraction. The number is represented as a quotient in mathematics, where the numerator and denominator are divided.
Calculation for the fraction of the lemons cut:
Let 'x' the total number of lemons.
x = 20
As, the all lemons are cut in halves.
So, the quantity of the lemons are multiplied by 2.
2x = 2×20 = 40
The new value of x becomes 40 now.
Now, again the lemons are cut into halves.
2×40 = 80
Therefore, the total number of lemons after cutting are 80.
To know more about, equality of numerator and denominator in fraction, here
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Can u help me with my work pls
Answer:
The mountain is 8.
The map is 96.
The compass is 6.
The hiker is 54.
The train is 14.
The a corn is 26
Hope this helps.
I WILL GIVE BRAINLIEST!!!
Answer:
Step-by-step explanation: